"4. 整合 Redis 4.0 准备工作在整合 Redis 之前，我们需要让 Redis 能够接受远程连接请求。就像在使用 MySQL 的时候，设置 root 账号的 host 字段为 % 一样 – 方式一：注释掉 bind，关闭保护模式 [图片] 这种方式是最简单粗暴的，也是安全性最低的方案，这 ...."

someone1
AI专业者开发社区 1 号成员
AI开发者社区 • 0 回帖 • 0 浏览 • 4 个月前

Redis-04-Java操作Redis

4. 整合 Redis

4.0 准备工作

在整合 Redis 之前，我们需要让 Redis 能够接受远程连接请求。就像在使用 MySQL 的时候，设置 root 账号的 host 字段为 % 一样

– 方式一：注释掉 bind，关闭保护模式

这种方式是最简单粗暴的，也是安全性最低的方案，这样操作会使得你的 Redis 完全暴露在服务器上

– 方式二：注释 bind，开启密码保护

这种方式相对较为安全，不过因为 Redis 的速度很快，这个密码需要足够强大

注意点

Redis 配置文件中的 bind 配置，这个配置是指定用于接收连接请求的 internet interface，也就是说网卡。如果不填，则使用全部的网卡来接收连接请求。在编辑这个配置的时候，千万不要和白名单搞混淆，这里填写信任 ip 地址也会无法访问

4.1 Jedis

Jedis 是 Redis 官方的封装工具包，它内部的所有方法均是 Redis 的指令
联通测试

常用 API

基本操作

public void test() {
    Jedis jedis = new Jedis("127.0.0.1", 6379);
    // 验证密码，如果没有设置密码这段代码省略
    // jedis.auth("password");
    jedis.connect(); // 连接
    jedis.disconnect(); // 断开连接
    jedis.flushAll(); // 清空所有的数据库
}

操作 key

public void test1() {
    Jedis jedis = new Jedis("127.0.0.1", 6379);
    jedis.flushDB();	// 清空数据库
    jedis.exists("username");	// 判断某个键是否存在
    jedis.set("username", "brucexu");	// set 操作
    Set<String> keys = jedis.keys("*");	// 获取符合规则的 key
    jedis.type("username");	// 获取 key 的种类
    jedis.del("username");	// 删除 key
    jedis.randomKey();	// 随机获取 key
    jedis.rename("username","name");	// 重命名 key
    jedis.get("name");	// 获取 key 对应的 value
    jedis.select(0);	// 选择数据库
    jedis.flushDB();	// 刷新数据库
    jedis.dbSize();		// 获取数据库的大小
    jedis.flushAll();	// 刷新全部数据库
}

操作 String

public void test2() {
    Jedis jedis = new Jedis("127.0.0.1", 6379);
    jedis.flushDB();
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"===========增加数据==========="</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span><span class="token string">"key1"</span><span class="token punctuation">,</span><span class="token string">"value1"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span><span class="token string">"key2"</span><span class="token punctuation">,</span><span class="token string">"value2"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span><span class="token string">"key3"</span><span class="token punctuation">,</span> <span class="token string">"value3"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"删除键key2:"</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">del</span><span class="token punctuation">(</span><span class="token string">"key2"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"获取键key2:"</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"key2"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"修改key1:"</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span><span class="token string">"key1"</span><span class="token punctuation">,</span> <span class="token string">"value1Changed"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"获取key1的值："</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"key1"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"在key3后面加入值："</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">append</span><span class="token punctuation">(</span><span class="token string">"key3"</span><span class="token punctuation">,</span> <span class="token string">"End"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"key3的值："</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"key3"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"增加多个键值  对："</span><span class="token operator">+</span>
                   jedis<span class="token punctuation">.</span><span class="token function">mset</span><span class="token punctuation">(</span><span class="token string">"key01"</span><span class="token punctuation">,</span><span class="token string">"value01"</span><span class="token punctuation">,</span><span class="token string">"key02"</span><span class="token punctuation">,</span><span class="token string">"value02"</span><span class="token punctuation">,</span><span class="token string">"key03"</span><span class="token punctuation">,</span><span class="token string">"value03"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"获取多个键值对："</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">mget</span><span class="token punctuation">(</span><span class="token string">"key01"</span><span class="token punctuation">,</span><span class="token string">"key02"</span><span class="token punctuation">,</span><span class="token string">"key03"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"获取多个键值对："</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">mget</span><span class="token punctuation">(</span><span class="token string">"key01"</span><span class="token punctuation">,</span><span class="token string">"key02"</span><span class="token punctuation">,</span><span class="token string">"key03"</span><span class="token punctuation">,</span><span class="token string">"key04"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"删除多个键值对："</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">del</span><span class="token punctuation">(</span><span class="token string">"key01"</span><span class="token punctuation">,</span><span class="token string">"key02"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"获取多个键值对："</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">mget</span><span class="token punctuation">(</span><span class="token string">"key01"</span><span class="token punctuation">,</span><span class="token string">"key02"</span><span class="token punctuation">,</span><span class="token string">"key03"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
jedis<span class="token punctuation">.</span><span class="token function">flushDB</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                   
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"===========新增键值对防止覆盖原先值=============="</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">setnx</span><span class="token punctuation">(</span><span class="token string">"key1"</span><span class="token punctuation">,</span> <span class="token string">"value1"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">setnx</span><span class="token punctuation">(</span><span class="token string">"key2"</span><span class="token punctuation">,</span> <span class="token string">"value2"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">setnx</span><span class="token punctuation">(</span><span class="token string">"key2"</span><span class="token punctuation">,</span> <span class="token string">"value2-new"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"key1"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"key2"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                   
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"===========新增键值对并设置有效时间============="</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">setex</span><span class="token punctuation">(</span><span class="token string">"key3"</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token string">"value3"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"key3"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>                    
<span class="token keyword">try</span> <span class="token punctuation">{</span>
	<span class="token class-name">TimeUnit</span><span class="token punctuation">.</span><span class="token constant">SECONDS</span><span class="token punctuation">.</span><span class="token function">sleep</span><span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">InterruptedException</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
	e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span> 
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"key3"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                   
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"===========获取原值，更新为新值=========="</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">getSet</span><span class="token punctuation">(</span><span class="token string">"key2"</span><span class="token punctuation">,</span> <span class="token string">"key2GetSet"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"key2"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"获得key2的值的字串："</span><span class="token operator">+</span>jedis<span class="token punctuation">.</span><span class="token function">getrange</span><span class="token punctuation">(</span><span class="token string">"key2"</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

}

操作 List

@Test
public void test3() {
    Jedis jedis = new Jedis("127.0.0.1", 6379);
    jedis.flushDB();
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"===========添加一个list==========="</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
jedis<span class="token punctuation">.</span><span class="token function">lpush</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token string">"ArrayList"</span><span class="token punctuation">,</span> <span class="token string">"Vector"</span><span class="token punctuation">,</span> <span class="token string">"Stack"</span><span class="token punctuation">,</span> 
            <span class="token string">"HashMap"</span><span class="token punctuation">,</span> <span class="token string">"WeakHashMap"</span><span class="token punctuation">,</span> <span class="token string">"LinkedHashMap"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
jedis<span class="token punctuation">.</span><span class="token function">lpush</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token string">"HashSet"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
jedis<span class="token punctuation">.</span><span class="token function">lpush</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token string">"TreeSet"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
jedis<span class="token punctuation">.</span><span class="token function">lpush</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token string">"TreeMap"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections的内容："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrange</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections区间0-3的元素："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrange</span><span class="token punctuation">(</span><span class="token string">" collections"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"==============================="</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">// 删除列表指定的值 ，第二个参数为删除的个数（有重复时），后add进去的值先被删，类似于出栈</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"删除指定元素个数："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrem</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token string">"HashMap"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections的内容："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrange</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"删除下表0-3区间之外的元 素："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">ltrim</span><span class="token punctuation">(</span><span class="token string">" collections"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections的内容："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrange</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections列表出栈（左 端）："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lpop</span><span class="token punctuation">(</span><span class="token string">" collections"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections的内容："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrange</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections添加元素，从列表右端，与lpush相对 应："</span> 
                   <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">rpush</span><span class="token punctuation">(</span><span class="token string">" collections"</span><span class="token punctuation">,</span> <span class="token string">" EnumMap"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections的内容："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrange</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections列表出栈（右 端）："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">rpop</span><span class="token punctuation">(</span><span class="token string">" collections"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections的内容："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrange</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"修改collections指定下标1的内 容："</span> 
                   <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lset</span><span class="token punctuation">(</span><span class="token string">" collections"</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token string">" LinkedArrayList"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections的内容："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrange</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"==============================="</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"collections的长度："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">llen</span><span class="token punctuation">(</span><span class="token string">"collections"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"获取collections下标为2的元 素："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lindex</span><span class="token punctuation">(</span><span class="token string">" collections"</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"==============================="</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
jedis<span class="token punctuation">.</span><span class="token function">lpush</span><span class="token punctuation">(</span><span class="token string">"sortedList"</span><span class="token punctuation">,</span> <span class="token string">"3"</span><span class="token punctuation">,</span> <span class="token string">"6"</span><span class="token punctuation">,</span> <span class="token string">"2"</span><span class="token punctuation">,</span> <span class="token string">"0"</span><span class="token punctuation">,</span> <span class="token string">"7"</span><span class="token punctuation">,</span> <span class="token string">"4"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"sortedList排序前："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrange</span><span class="token punctuation">(</span><span class="token string">"sortedList"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">sort</span><span class="token punctuation">(</span><span class="token string">"sortedList"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"sortedList排序后："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">lrange</span><span class="token punctuation">(</span><span class="token string">"sortedList"</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

}

操作 Set

@Test
public void test4() {
    Jedis jedis = new Jedis("127.0.0.1", 6379);
    jedis.flushDB();
    System.out.println("============ 向集合中添加元素（不重复） ============");
    System.out.println(jedis.sadd("eleSet", "e1", "e2", "e4", "e3", "e0", "e8", "e7", "e5"));
    System.out.println(jedis.sadd("eleSet", "e6"));
    System.out.println(jedis.sadd("eleSet", "e6"));
    System.out.println("eleSet 的所有元素为：" + jedis.smembers("eleSet"));
    System.out.println("删除一个元素 e0：" + jedis.srem("eleSet", "e0"));
    System.out.println("eleSet 的所有元素为：" + jedis.smembers("eleSet"));
    System.out.println("删除两个元素 e7 和 e6：" + jedis.srem("eleSet", "e7", "e6"));
    System.out.println("eleSet 的所有元素为：" + jedis.smembers("eleSet"));
    System.out.println("随机的移除集合中的一个元素：" + jedis.spop("eleSet"));
    System.out.println("随机的移除集合中的一个元素：" + jedis.spop("eleSet"));
    System.out.println("eleSet 的所有元素为：" + jedis.smembers("eleSet"));
    System.out.println("eleSet 中包含元素的个数：" + jedis.scard("eleSet"));
    System.out.println("e3 是否在 eleSet 中：" + jedis.sismember("eleSet", "e3"));
    System.out.println("e1 是否在 eleSet 中：" + jedis.sismember("eleSet", "e1"));
    System.out.println("e1 是否在 eleSet 中：" + jedis.sismember("eleSet", "e5"));
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"================================="</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">sadd</span><span class="token punctuation">(</span><span class="token string">"eleSet1"</span><span class="token punctuation">,</span> <span class="token string">"e1"</span><span class="token punctuation">,</span> <span class="token string">"e2"</span><span class="token punctuation">,</span> <span class="token string">"e4"</span><span class="token punctuation">,</span> <span class="token string">"e3"</span><span class="token punctuation">,</span> <span class="token string">"e0"</span><span class="token punctuation">,</span> <span class="token string">"e8"</span><span class="token punctuation">,</span> <span class="token string">"e7"</span><span class="token punctuation">,</span> <span class="token string">"e5"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>jedis<span class="token punctuation">.</span><span class="token function">sadd</span><span class="token punctuation">(</span><span class="token string">"eleSet2"</span><span class="token punctuation">,</span> <span class="token string">"e1"</span><span class="token punctuation">,</span> <span class="token string">"e2"</span><span class="token punctuation">,</span> <span class="token string">"e4"</span><span class="token punctuation">,</span> <span class="token string">"e3"</span><span class="token punctuation">,</span> <span class="token string">"e0"</span><span class="token punctuation">,</span> <span class="token string">"e8"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"将eleSet1中删除e1并存入eleSet3 中："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">smove</span><span class="token punctuation">(</span><span class="token string">" eleSet1"</span><span class="token punctuation">,</span> <span class="token string">" eleSet3"</span><span class="token punctuation">,</span> <span class="token string">" e1"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"将eleSet1中删除e2并存入eleSet3 中："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">smove</span><span class="token punctuation">(</span><span class="token string">" eleSet1"</span><span class="token punctuation">,</span> <span class="token string">" eleSet3"</span><span class="token punctuation">,</span> <span class="token string">" e2"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"eleSet1中的元素："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">smembers</span><span class="token punctuation">(</span><span class="token string">"eleSet1"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"eleSet3中的元素："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">smembers</span><span class="token punctuation">(</span><span class="token string">"eleSet3"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"============集合运算================="</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"eleSet1中的元素："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">smembers</span><span class="token punctuation">(</span><span class="token string">"eleSet1"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"eleSet2中的元素："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">smembers</span><span class="token punctuation">(</span><span class="token string">"eleSet2"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"eleSet1和eleSet2的交集:"</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">sinter</span><span class="token punctuation">(</span><span class="token string">" eleSet1 "</span><span class="token punctuation">,</span> <span class="token string">" eleSet2 "</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"eleSet1和eleSet2的并集:"</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">sunion</span><span class="token punctuation">(</span><span class="token string">" eleSet1 "</span><span class="token punctuation">,</span> <span class="token string">" eleSet2 "</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"eleSet1和eleSet2的差集:"</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">sdiff</span><span class="token punctuation">(</span><span class="token string">" eleSet1 "</span><span class="token punctuation">,</span> <span class="token string">" eleSet2 "</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
jedis<span class="token punctuation">.</span><span class="token function">sinterstore</span><span class="token punctuation">(</span><span class="token string">"eleSet4"</span><span class="token punctuation">,</span> <span class="token string">"eleSet1"</span><span class="token punctuation">,</span> <span class="token string">"eleSet2"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"eleSet4中的元素："</span> <span class="token operator">+</span> jedis<span class="token punctuation">.</span><span class="token function">smembers</span><span class="token punctuation">(</span><span class="token string">"eleSet4"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

}

操作 Hash

@Test
public void test1() {
    Jedis jedis = new Jedis("127.0.0.1", 6379);
    jedis.flushDB();
    Map<String, String> map = new HashMap<>();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");
    map.put("key4", "value4");
    jedis.hmset("hash", map);    // 添加名称为 hash（key）的 hash 元素
    jedis.hset("hash", "key5", "value5");   // 向名称为 hash 的 hash 中添加 key 为 key5，value 为 value5 元素
    Map<String, String> map1 = jedis.hgetAll("hash");
    System.out.println("散列 hash 的所有键值对 为：" + map1);
    Set<String> set = jedis.hkeys("hash");
    System.out.println("散列 hash 的所有键为：" + set);
    List<String> list = jedis.hvals("hash");
    System.out.println("散列 hash 的所有值为：" + list);
    System.out.println("将 key6 保存的值加上一个整数，如果 key6 不存在则添加 key6：" 
                       + jedis.hincrBy("hash", "key6", 6));
    System.out.println("散列 hash 的所有键值对为：" + jedis.hgetAll("hash"));
    System.out.println("将 key6 保存的值加上一个整数，如果 key6 不存在则添加 key6：" 
                       + jedis.hincrBy("hash", "key6", 3));
    System.out.println("散列 hash 的所有键值对为：" + jedis.hgetAll("hash"));
    System.out.println("删除一个或者多个键值对：" + jedis.hdel("hash", "key2"));
    System.out.println("散列 hash 的所有键值对为：" + jedis.hgetAll("hash"));
    System.out.println("散列 hash 中键值对的个数：" + jedis.hlen("hash"));
    System.out.println("判断 hash 中是否存在 key2：" + jedis.hexists("hash", "key2"));
    System.out.println("判断 hash 中是否存在 key3：" + jedis.hexists("hash", "key3"));
    System.out.println("获取 hash 中的值：" + jedis.hmget("hash", "key3"));
    System.out.println("获取 hash 中的 值：" + jedis.hmget("hash", "key3", "key4"));
}

操作事务

@Test
public void test1() {
    Jedis jedis = new Jedis("127.0.0.1", 6379);
    jedis.flushDB();
    JSONObject jsonObject = new JSONObject();
    jsonObject.put("hello", "world");
    jsonObject.put("name", "java");
    Transaction multi = jedis.multi();  // 开启事务
    String result = jsonObject.toJSONString();
    try {
        multi.set("json", result);  // 向 redis 存入一条数据
        multi.set("json2", result); // 再存入一条数据
        int i = 100 / 0;    // 这里引发了异常，用 0 作为被除数
        multi.exec();   // 如果没有引发异常，执行进入队列的命令
    } catch (Exception e) {
        e.printStackTrace();
        multi.discard();    // 如果出现异常，回滚
    } finally {
        System.out.println(jedis.get("json"));
        System.out.println(jedis.get("json2"));
        jedis.close();  // 最终关闭客户端
    }
}

4.2 SpringBoot 整合

导入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

配置连接信息

spring:
  redis:
    host: 127.0.0.1
    port: 6379
    password: primabrucexu

联通测试

@Test
void contextLoads() {    System.out.println(template.getConnectionFactory().getConnection().ping());
}

架构更新：1.x 使用 Jedis 作为底层，2.x 之后使用 Lettuce 作为底层
- Jedis 直接连接数据库，线程不安全，需要多线程操作时，需要使用连接池，效率较低
- Lettuce 通过 Netty 访问 Redis 服务器，一个实例可以在多个线程中共享且并不存在安全问题，效率较高

– 自定义配置 RedisTemplate

在多数时候，默认情况下提供的 RedisTemplate 并不能满足我们的使用需求，且它还未进行序列化操作，于是我们需要定义自己的 RedisTemplate 来满足我们的需求

代码

@Bean
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
    RedisTemplate<String, Object> template = new RedisTemplate<>();
    template.setConnectionFactory(factory);
    Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
    ObjectMapper om = new ObjectMapper();
    om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
    om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
    jackson2JsonRedisSerializer.setObjectMapper(om);
    StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
    template.setKeySerializer(stringRedisSerializer);       // key 采用 String 的序列化方式
    template.setHashKeySerializer(stringRedisSerializer);   // hash 的 key 也采用 String 的序列化方式
    template.setValueSerializer(jackson2JsonRedisSerializer);   // value 序列化方式采用 jackson
    template.setHashValueSerializer(jackson2JsonRedisSerializer);   // hash 的 value 序列化方式采用 jackson
    template.afterPropertiesSet();
    return template;
}

– 封装 Redis 工具类

封装一些常用操作，提高开发效率
源代码作者：B 站狂神说 Java

代码

/**
 * @author BruceXu
 * @date 2021/1/30
 */
@Component
public class RedisTools {
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;
<span class="token comment">// =============================common============================</span>

<span class="token comment">/**
 * 指定缓存失效时间
 *
 * @param key  键
 * @param time 时间(秒)
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">expire</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token keyword">long</span> time<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span>time <span class="token operator">&gt;</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            redisTemplate<span class="token punctuation">.</span><span class="token function">expire</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> time<span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span><span class="token constant">SECONDS</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 根据key 获取过期时间
 *
 * @param key 键 不能为null
 * @return 时间(秒) 返回0代表为永久有效
 */</span>
<span class="token keyword">public</span> <span class="token keyword">long</span> <span class="token function">getExpire</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">getExpire</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span><span class="token constant">SECONDS</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 判断key是否存在
 *
 * @param key 键
 * @return true 存在 false不存在
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">hasKey</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">hasKey</span><span class="token punctuation">(</span>key<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 删除缓存
 *
 * @param key 可以传一个值 或多个
 */</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">del</span><span class="token punctuation">(</span><span class="token class-name">String</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> key<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">if</span> <span class="token punctuation">(</span>key <span class="token operator">!=</span> <span class="token keyword">null</span> <span class="token operator">&amp;&amp;</span> key<span class="token punctuation">.</span>length <span class="token operator">&gt;</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span>key<span class="token punctuation">.</span>length <span class="token operator">==</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            redisTemplate<span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span>key<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
            redisTemplate<span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span><span class="token class-name">Arrays</span><span class="token punctuation">.</span><span class="token function">asList</span><span class="token punctuation">(</span>key<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">// ============================String=============================</span>

<span class="token comment">/**
 * 普通缓存获取
 *
 * @param key 键
 * @return 值
 */</span>
<span class="token keyword">public</span> <span class="token class-name">Object</span> <span class="token function">get</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> key <span class="token operator">==</span> <span class="token keyword">null</span> <span class="token operator">?</span> <span class="token keyword">null</span> <span class="token operator">:</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>key<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 普通缓存放入
 *
 * @param key   键
 * @param value 值
 * @return true成功 false失败
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">set</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">Object</span> value<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">opsForValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 普通缓存放入并设置时间
 *
 * @param key   键
 * @param value 值
 * @param time  时间(秒) time要大于0 如果time小于等于0 将设置无限期
 * @return true成功 false 失败
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">set</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">Object</span> value<span class="token punctuation">,</span> <span class="token keyword">long</span> time<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span>time <span class="token operator">&gt;</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            redisTemplate<span class="token punctuation">.</span><span class="token function">opsForValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> value<span class="token punctuation">,</span> time<span class="token punctuation">,</span>
                    <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span><span class="token constant">SECONDS</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
            <span class="token function">set</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 递增
 *
 * @param key   键
 * @param delta 步长
 */</span>
<span class="token keyword">public</span> <span class="token keyword">long</span> <span class="token function">incr</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token keyword">long</span> delta<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">increment</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> delta<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 递减
 *
 * @param key   键
 * @param delta 步长
 */</span>
<span class="token keyword">public</span> <span class="token keyword">long</span> <span class="token function">decr</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token keyword">long</span> delta<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">decrement</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> delta<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">// ================================Map=================================</span>

<span class="token comment">/**
 * HashGet
 *
 * @param key  键 不能为null
 * @param item 项 不能为null
 */</span>
<span class="token keyword">public</span> <span class="token class-name">Object</span> <span class="token function">hget</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">String</span> item<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForHash</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> item<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 获取hashKey对应的所有键值
 *
 * @param key 键
 * @return 对应的多个键值
 */</span>
<span class="token keyword">public</span> <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">Object</span><span class="token punctuation">,</span> <span class="token class-name">Object</span><span class="token punctuation">&gt;</span></span> <span class="token function">hmget</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForHash</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">entries</span><span class="token punctuation">(</span>key<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * HashSet
 *
 * @param key 键
 * @param map 对应多个键值
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">hmset</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">String</span><span class="token punctuation">,</span> <span class="token class-name">Object</span><span class="token punctuation">&gt;</span></span> map<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">opsForHash</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">putAll</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> map<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * HashSet 并设置时间
 *
 * @param key  键
 * @param map  对应多个键值
 * @param time 时间(秒)
 * @return true成功 false失败
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">hmset</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">String</span><span class="token punctuation">,</span> <span class="token class-name">Object</span><span class="token punctuation">&gt;</span></span> map<span class="token punctuation">,</span> <span class="token keyword">long</span> time<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">opsForHash</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">putAll</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> map<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span>time <span class="token operator">&gt;</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            <span class="token function">expire</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> time<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 向一张hash表中放入数据,如果不存在将创建
 *
 * @param key   键
 * @param item  项
 * @param value 值
 * @return true 成功 false失败
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">hset</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">String</span> item<span class="token punctuation">,</span> <span class="token class-name">Object</span> value<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">opsForHash</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> item<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 向一张hash表中放入数据,如果不存在将创建
 *
 * @param key   键
 * @param item  项
 * @param value 值
 * @param time  时间(秒) 注意:如果已存在的hash表有时间,这里将会替换原有的时间
 * @return true 成功 false失败
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">hset</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">String</span> item<span class="token punctuation">,</span> <span class="token class-name">Object</span> value<span class="token punctuation">,</span> <span class="token keyword">long</span> time<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">opsForHash</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> item<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span>time <span class="token operator">&gt;</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            <span class="token function">expire</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> time<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 删除hash表中的值
 *
 * @param key 键 不能为null* @param item 项 可以使多个 不能为null
 */</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">hdel</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">Object</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> item<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">opsForHash</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> item<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 判断hash表中是否有该项的值
 *
 * @param key  键 不能为null
 * @param item 项 不能为null
 * @return true 存在 false不存在
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">hHasKey</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">String</span> item<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForHash</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">hasKey</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> item<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * hash递增 如果不存在,就会创建一个 并把新增后的值返回
 *
 * @param key  键
 * @param item 项
 * @param by   要增加几(大于0)
 */</span>
<span class="token keyword">public</span> <span class="token keyword">double</span> <span class="token function">hincr</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">String</span> item<span class="token punctuation">,</span> <span class="token keyword">double</span> by<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForHash</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">increment</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> item<span class="token punctuation">,</span> by<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * hash递减
 *
 * @param key  键
 * @param item 项
 * @param by   要减少记(小于0)
 */</span>
<span class="token keyword">public</span> <span class="token keyword">double</span> <span class="token function">hdecr</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">String</span> item<span class="token punctuation">,</span> <span class="token keyword">double</span> by<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForHash</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">increment</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> item<span class="token punctuation">,</span> <span class="token operator">-</span>by<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">// ============================set=============================</span>

<span class="token comment">/**
 * 根据key获取Set中的所有值
 *
 * @param key 键
 */</span>
<span class="token keyword">public</span> <span class="token class-name">Set</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">Object</span><span class="token punctuation">&gt;</span></span> <span class="token function">sGet</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">members</span><span class="token punctuation">(</span>key<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token keyword">null</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 根据value从一个set中查询,是否存在
 *
 * @param key   键
 * @param value 值
 * @return true 存在 false不存在
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">sHasKey</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">Object</span> value<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">isMember</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 将数据放入set缓存
 *
 * @param key    键
 * @param values 值 可以是多个
 * @return 成功个数
 */</span>
<span class="token keyword">public</span> <span class="token keyword">long</span> <span class="token function">sSet</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">Object</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> values<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> values<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token number">0</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 将set数据放入缓存
 *
 * @param key    键
 * @param time   时间(秒)
 * @param values 值 可以是多个
 * @return 成功个数
 */</span>
<span class="token keyword">public</span> <span class="token keyword">long</span> <span class="token function">sSetAndTime</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token keyword">long</span> time<span class="token punctuation">,</span> <span class="token class-name">Object</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> values<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token class-name">Long</span> count <span class="token operator">=</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> values<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span>time <span class="token operator">&gt;</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            <span class="token function">expire</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> time<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
        <span class="token keyword">return</span> count<span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token number">0</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 获取set缓存的长度
 *
 * @param key 键
 */</span>
<span class="token keyword">public</span> <span class="token keyword">long</span> <span class="token function">sGetSetSize</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">size</span><span class="token punctuation">(</span>key<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token number">0</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 移除值为value的
 *
 * @param key    键
 * @param values 值 可以是多个
 * @return 移除的个数
 */</span>
<span class="token keyword">public</span> <span class="token keyword">long</span> <span class="token function">setRemove</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">Object</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> values<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token class-name">Long</span> count <span class="token operator">=</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">remove</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> values<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> count<span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token number">0</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">// ===============================list=================================</span>

<span class="token comment">/**
 * 获取list缓存的内容
 *
 * @param key   键
 * @param start 开始
 * @param end   结束 0 到 -1代表所有值
 */</span>
<span class="token keyword">public</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">Object</span><span class="token punctuation">&gt;</span></span> <span class="token function">lGet</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token keyword">long</span> start<span class="token punctuation">,</span> <span class="token keyword">long</span> end<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">range</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> start<span class="token punctuation">,</span> end<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token keyword">null</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 获取list缓存的长度
 *
 * @param key 键
 */</span>
<span class="token keyword">public</span> <span class="token keyword">long</span> <span class="token function">lGetListSize</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">size</span><span class="token punctuation">(</span>key<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token number">0</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 通过索引 获取list中的值
 *
 * @param key   键
 * @param index 索引
 */</span>
<span class="token keyword">public</span> <span class="token class-name">Object</span> <span class="token function">lGetIndex</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token keyword">long</span> index<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">index</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> index<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token keyword">null</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 将list放入缓存
 *
 * @param key   键
 * @param value 值
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">lSet</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">Object</span> value<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">opsForList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">rightPush</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 将list放入缓存
 *
 * @param key   键
 * @param value 值
 * @param time  时间(秒)
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">lSet</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">Object</span> value<span class="token punctuation">,</span> <span class="token keyword">long</span> time<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">opsForList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">rightPush</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span>time <span class="token operator">&gt;</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            <span class="token function">expire</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> time<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 将list放入缓存
 *
 * @param key   键
 * @param value 值
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">lSet</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">Object</span><span class="token punctuation">&gt;</span></span> value<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">opsForList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">rightPushAll</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 将list放入缓存
 *
 * @param key   键
 * @param value 值
 * @param time  时间(秒)
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">lSet</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">Object</span><span class="token punctuation">&gt;</span></span> value<span class="token punctuation">,</span> <span class="token keyword">long</span> time<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">opsForList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">rightPushAll</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span>time <span class="token operator">&gt;</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            <span class="token function">expire</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> time<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 根据索引修改list中的某条数据
 *
 * @param key   键
 * @param index 索引
 * @param value 值
 */</span>
<span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">lUpdateIndex</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token keyword">long</span> index<span class="token punctuation">,</span> <span class="token class-name">Object</span> value<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">opsForList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> index<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 移除N个值为value
 *
 * @param key   键
 * @param count 移除多少个
 * @param value 值
 * @return 移除的个数
 */</span>
<span class="token keyword">public</span> <span class="token keyword">long</span> <span class="token function">lRemove</span><span class="token punctuation">(</span><span class="token class-name">String</span> key<span class="token punctuation">,</span> <span class="token keyword">long</span> count<span class="token punctuation">,</span> <span class="token class-name">Object</span> value<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token keyword">return</span> redisTemplate<span class="token punctuation">.</span><span class="token function">opsForList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">remove</span><span class="token punctuation">(</span>key<span class="token punctuation">,</span> count<span class="token punctuation">,</span> value<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token number">0</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

}

Redis-04-Java操作Redis

4. 整合 Redis

4.0 准备工作

– 方式一：注释掉 bind，关闭保护模式

– 方式二：注释 bind，开启密码保护

4.1 Jedis

4.2 SpringBoot 整合

– 自定义配置 RedisTemplate

– 封装 Redis 工具类

相关帖子

随便看看

Redis-04-Java操作Redis