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[JSP]Maven+SSM框架(Spring+SpringMVC+MyBatis) - Hello World

来源：http://blog.csdn.net/zhshulin/article/details/37956105?utm_source=tuicool&utm_medium=referral（以下博文对原博文有改动和补充）

 

博文里红底白字的，为注意修改的地方，在这里先声明

源码：Maven&SSM 框架 - Hello World

 

开发环境：

Eclipse Java EE IDE for Web Developers. Version: Mars.2 Release (4.5.2)

apache-tomcat-8.0.33

jdk1.8.0_77

MySQL 5.0.11-dev（官网下载需要账号登录，故不提供，请自行百度）

 

 

 

1、基本概念

1.1、Spring

Spring 是一个开源框架，Spring 是于 2003 年兴起的一个轻量级的 Java 开发框架，由 Rod Johnson 在其著作 Expert One-On-One J2EE Development and Design 中阐述的部分理念和原型衍生而来。它是为了解决企业应用开发的复杂性而创建的。Spring 使用基本的 JavaBean 来完成以前只可能由 EJB 完成的事情。然而，Spring 的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言，任何 Java 应用都可以从 Spring 中受益。 简单来说，Spring 是一个轻量级的控制反转（IoC）和面向切面（AOP）的容器框架。

 

1.2、SpringMVC

Spring MVC 属于 SpringFrameWork 的后续产品，已经融合在 Spring Web Flow 里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色，这种分离让它们更容易进行定制。

 

1.3、MyBatis

MyBatis 本是 apache 的一个开源项目 iBatis, 2010 年这个项目由 apache software foundation 迁移到了 google code，并且改名为 MyBatis 。MyBatis 是一个基于 Java 的持久层框架。iBATIS 提供的持久层框架包括 SQL Maps 和 Data Access Objects（DAO）MyBatis 消除了几乎所有的 JDBC 代码和参数的手工设置以及结果集的检索。MyBatis 使用简单的 XML 或注解用于配置和原始映射，将接口和 Java 的 POJOs（Plain Old Java Objects，普通的 Java 对象）映射成数据库中的记录。

 


2、开发环境搭建

参看博文：MyEclipse+Tomcat+MAVEN+SVN 项目完整环境搭建（作者：shu_lin）

 


3、Maven Web 项目创建

参看博文：使用 maven 创建 web 项目（作者：shu_lin）（博文最后一步可以不用设置，Maven->Update Project... 会自动设置）

 

补充：（可跳过）

新建的 Maven，Java Resources 只有 resource

可以添加 Server Library 自动生成

 

右击项目 ->Properties->Java Build Path->Add Library...->Server Library

 


4、SSM 整合

下面主要介绍三大框架的整合，至于环境的搭建以及项目的创建，参看上面的博文。这次整合我分了 2 个配置文件，分别是 spring-mybatis.xml，包含 spring 和 mybatis 的配置文件，还有个是 spring-mvc 的配置文件，此外有 2 个资源文件：jdbc.propertis 和 log4j.properties。

 

使用框架都是较新的版本：

Spring 4.0.2 RELEASE（PS：无需手动下载，Maven 会自动下）

Spring MVC 4.0.2 RELEASE（PS：无需手动下载，Maven 会自动下）

MyBatis 3.2.6（下载：https://github.com/mybatis/mybatis-3/releases）

 

完整目录结构如下：

 

 

4.1、Maven 引入需要的 JAR 包

为了方便后面说的时候不需要引入 JAR 包，我这里直接给出所有需要的 JAR 包，这都是基本的 JAR 包，每个包的是干什么的都有注释，就不再多说了。


pom.xml

<properties>
    <!-- spring 版本号 -->
    <spring.version>4.0.2.RELEASE</spring.version>
    <!-- mybatis 版本号 -->
    <mybatis.version>3.2.6</mybatis.version>
    <!-- log4j 日志文件管理包版本 -->
    <slf4j.version>1.7.7</slf4j.version>
    <log4j.version>1.2.17</log4j.version>
</properties>
<dependencies>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
        <!-- 表示开发的时候引入，发布的时候不会加载此包 -->
        <scope>test</scope>
    </dependency>
    <!-- spring 核心包 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-oxm</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!-- mybatis 核心包 -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>${mybatis.version}</version>
    </dependency>
    <!-- mybatis/spring 包 -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>1.2.2</version>
    </dependency>
    <!-- 导入 java ee jar 包 -->
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>7.0</version>
    </dependency>
    <!-- 导入 Mysql 数据库链接 jar 包 -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.30</version>
    </dependency>
    <!-- 导入 dbcp 的 jar 包，用来在 applicationContext.xml 中配置数据库 -->
    <dependency>
        <groupId>commons-dbcp</groupId>
        <artifactId>commons-dbcp</artifactId>
        <version>1.2.2</version>
    </dependency>
    <!-- JSTL 标签类 -->
    <dependency>
        <groupId>jstl</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>
    <!-- 日志文件管理包 -->
    <!-- log start -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>${log4j.version}</version>
    </dependency>
    <!-- 格式化对象，方便输出日志 -->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.1.41</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
    <!-- log end -->
    <!-- 映入 JSON -->
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.9.13</version>
    </dependency>
    <!-- 上传组件包 -->
    <dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.3.1</version>
    </dependency>
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.4</version>
    </dependency>
    <dependency>
        <groupId>commons-codec</groupId>
        <artifactId>commons-codec</artifactId>
        <version>1.9</version>
    </dependency>
</dependencies>
<build>
    <finalName>app</finalName>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.5.1</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
                <encoding>UTF-8</encoding>
            </configuration>
        </plugin>
    </plugins>
</build>

 

 

 

4.2、Spring 与 MyBatis 的整合

所有需要的 JAR 包都引入以后，首先进行 Spring 与 MyBatis 的整合，然后再进行 JUnit 测试，先看一个项目结构图：

 

 

 

4.2.1、建立 JDBC 属性文件

jdbc.properties（文件编码修改为 utf-8）

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8
username=root
password=123456
#定义初始连接数
initialSize=0
#定义最大连接数
maxActive=20
#定义最大空闲
maxIdle=20
#定义最小空闲
minIdle=1
#定义最长等待时间
maxWait=60000

 

 

4.2.2、Log4j 的配置（跳过此步也没影响）

为了方便调试，一般都会使用日志来输出信息，Log4j 是 Apache 的一个开放源代码项目，通过使用 Log4j，我们可以控制日志信息输送的目的地是控制台、文件、GUI 组件，甚至是套接口服务器、NT 的事件记录器、UNIX Syslog 守护进程等；我们也可以控制每一条日志的输出格式；通过定义每一条日志信息的级别，我们能够更加细致地控制日志的生成过程。
Log4j 的配置很简单，而且也是通用的，下面给出一个基本的配置，换到其他项目中也无需做多大的调整，如果想做调整或者想了解 Log4j 的各种配置，参看我转载的一篇博文，很详细：Log4j 配置详解 （作者：shu_lin）


log4j.properties（文件编码修改为 utf-8）

#定义 LOG 输出级别
log4j.rootLogger=INFO,Console,File
#定义日志输出目的地为控制台
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
#可以灵活地指定日志输出格式，下面一行是指定具体的格式
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n

#文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.File = org.apache.log4j.RollingFileAppender
#指定输出目录
log4j.appender.File.File = logs/springmvcMybist/ssm.log
#定义文件最大大小
log4j.appender.File.MaxFileSize = 10MB
#输出所以日志，如果换成 DEBUG 表示输出 DEBUG 以上级别日志
log4j.appender.File.Threshold = ALL
log4j.appender.File.layout = org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH🇲🇲ss}][</span><span style="color: rgba(128, 0, 0, 1)">%c</span><span style="color: rgba(128, 0, 0, 1); font-weight: bold">]%m%n

 

 

4.2.3、建立 spring-mybatis.xml 配置文件

这个文件就是用来完成 spring 和 mybatis 的整合的。这里面也没多少行配置，主要的就是自动扫描，自动注入，配置数据库。注释也很详细，大家看看就明白了。


spring-mybatis.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans  
                        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd  
                        http://www.springframework.org/schema/context  
                        http://www.springframework.org/schema/context/spring-context-4.0.xsd  
                        http://www.springframework.org/schema/mvc  
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    <!-- 自动扫描 -->
    <context:component-scan base-package="com.ssm" />

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 引入配置文件 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">bean </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="propertyConfigurer"</span><span style="color: rgba(255, 0, 0, 1)">
    class</span><span style="color: rgba(0, 0, 255, 1)">="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="location"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="classpath:jdbc.properties"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">bean</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">bean </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="dataSource"</span><span style="color: rgba(255, 0, 0, 1)"> class</span><span style="color: rgba(0, 0, 255, 1)">="org.apache.commons.dbcp.BasicDataSource"</span><span style="color: rgba(255, 0, 0, 1)">
    destroy-method</span><span style="color: rgba(0, 0, 255, 1)">="close"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="driverClassName"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="${driver}"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="url"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="${url}"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="username"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="${username}"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="password"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="${password}"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 初始化连接大小 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="initialSize"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="${initialSize}"</span><span style="color: rgba(0, 0, 255, 1)">&gt;&lt;/</span><span style="color: rgba(128, 0, 0, 1)">property</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 连接池最大数量 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="maxActive"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="${maxActive}"</span><span style="color: rgba(0, 0, 255, 1)">&gt;&lt;/</span><span style="color: rgba(128, 0, 0, 1)">property</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 连接池最大空闲 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="maxIdle"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="${maxIdle}"</span><span style="color: rgba(0, 0, 255, 1)">&gt;&lt;/</span><span style="color: rgba(128, 0, 0, 1)">property</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 连接池最小空闲 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="minIdle"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="${minIdle}"</span><span style="color: rgba(0, 0, 255, 1)">&gt;&lt;/</span><span style="color: rgba(128, 0, 0, 1)">property</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 获取连接最大等待时间 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="maxWait"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="${maxWait}"</span><span style="color: rgba(0, 0, 255, 1)">&gt;&lt;/</span><span style="color: rgba(128, 0, 0, 1)">property</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">bean</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> spring和MyBatis完美整合，不需要mybatis的配置映射文件 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">bean </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="sqlSessionFactory"</span><span style="color: rgba(255, 0, 0, 1)"> class</span><span style="color: rgba(0, 0, 255, 1)">="org.mybatis.spring.SqlSessionFactoryBean"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="dataSource"</span><span style="color: rgba(255, 0, 0, 1)"> ref</span><span style="color: rgba(0, 0, 255, 1)">="dataSource"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 自动扫描mapping.xml文件 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="mapperLocations"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="<span style="color: rgba(255, 255, 255, 1); background-color: rgba(255, 0, 0, 1)">classpath:com/ssm/mapping/*.xml</span>"</span><span style="color: rgba(0, 0, 255, 1)">&gt;&lt;/</span><span style="color: rgba(128, 0, 0, 1)">property</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">bean</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> DAO接口所在包名，Spring会自动查找其下的类 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">bean </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="org.mybatis.spring.mapper.MapperScannerConfigurer"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="basePackage"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="<span style="color: rgba(255, 255, 255, 1); background-color: rgba(255, 0, 0, 1)">com.ssm.dao</span>"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="sqlSessionFactoryBeanName"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="sqlSessionFactory"</span><span style="color: rgba(0, 0, 255, 1)">&gt;&lt;/</span><span style="color: rgba(128, 0, 0, 1)">property</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">bean</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> (事务管理)transaction manager, use JtaTransactionManager for global tx </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">bean </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="transactionManager"</span><span style="color: rgba(255, 0, 0, 1)">
    class</span><span style="color: rgba(0, 0, 255, 1)">="org.springframework.jdbc.datasource.DataSourceTransactionManager"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="dataSource"</span><span style="color: rgba(255, 0, 0, 1)"> ref</span><span style="color: rgba(0, 0, 255, 1)">="dataSource"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">bean</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>



</beans>

 

 

4.2.4、JUnit 测试

经过以上步骤（log4j 不配也没影响），我们已经完成了 Spring 和 mybatis 的整合，这样我们就可以编写一段测试代码来试试是否成功了。

 

4.2.4.1、创建测试用表

既然我们需要测试，那么我们就需要建立在数据库中建立一个测试表，这个表建的很简单，SQL 语句为：

 

MySQL

#
# Structure for table "user_t"
#

DROP TABLE IF EXISTS user_t;
CREATE TABLE user_t (
id int(11) NOT NULL AUTO_INCREMENT,
</span><span style="color: rgba(51, 51, 51, 1)">user_name</span> varchar(40) NOT NULL,
password varchar(255) NOT NULL,
age int(4) NOT NULL,
PRIMARY KEY (id)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;




Data for table "user_t"




INSERT INTO user_t VALUES (1,'测试','123456',24);

 

 

4.2.4.2、利用 MyBatis Generator 自动创建代码

 

随便找个位置建文件夹（路径最好都是英文），然后在里面建个 src 文件夹，下载下面那两个包，将 generatorConfig.xml 拷进去，最后打开 cmd，进到文件夹，执行下面的命令，代码就会生成到 src 文件夹里

mysql-connector-java.jar

mybatis-generator-core.jar

 

generatorConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
    <!-- 数据库驱动 -->
    <classPathEntry location="mysql-connector-java-5.1.38-bin.jar" />
    <context id="DB2Tables" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="true" />
            <!-- 是否去除自动生成的注释 true：是 ： false: 否 -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!--数据库链接 URL，用户名、密码 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://127.0.0.1:3306/test" userId="root"
            password="123456">
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>
        <!-- 生成模型的包名和位置 -->
        <javaModelGenerator targetPackage="com.ssm.pojo"
            targetProject="src">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- 生成映射文件的包名和位置 -->
        <sqlMapGenerator targetPackage="com.ssm.mapping"
            targetProject="src">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>
        <!-- 生成 DAO 的包名和位置 -->
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="com.ssm.dao" targetProject="src">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>
        <!-- 要生成的表 tableName 是数据库中的表名或视图名 domainObjectName 是实体类名 -->
        <table tableName="user_t" domainObjectName="User"
            enableCountByExample="false" enableUpdateByExample="false"
            enableDeleteByExample="false" enableSelectByExample="false"
            selectByExampleQueryId="false"></table>
    </context>
</generatorConfiguration>

 

cmd 命令

java -jar mybatis-generator-core-1.3.2.jar -configfile generatorConfig.xml -overwrite

 

可做成.bat 文件备用，放在目录运行即可

cmd 命令

set current_path="%cd%"
java -jar mybatis-generator-core-1.3.2.jar -configfile generatorConfig.xml -overwrite
pause
exit

 

参考博文：SSM 框架——使用 MyBatis Generator 自动创建代码（作者：shu_lin）

 

这个可根据表自动创建实体类、MyBatis 映射文件以及 DAO 接口，完成后将文件复制到工程中。如图：

 

IUserService.java

package com.ssm.service;

import com.ssm.pojo.User;


public interface IUserService {


</span><span style="color: rgba(0, 0, 255, 1)">public</span> User getUserById(<span style="color: rgba(0, 0, 255, 1)">int</span><span style="color: rgba(0, 0, 0, 1)"> userId);



}

 

UserService.java

package com.ssm.service.impl;

import javax.annotation.Resource;


import org.springframework.stereotype.Service;


import com.ssm.dao.UserMapper;
import com.ssm.pojo.User;
import com.ssm.service.IUserService;


@Service("userService")
public class UserService implements IUserService {


@Resource
</span><span style="color: rgba(0, 0, 255, 1)">private</span><span style="color: rgba(0, 0, 0, 1)"> UserMapper userDao;

</span><span style="color: rgba(0, 0, 255, 1)">public</span> User getUserById(<span style="color: rgba(0, 0, 255, 1)">int</span><span style="color: rgba(0, 0, 0, 1)"> userId) {
    </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.userDao.selectByPrimaryKey(userId);
}



}

 

 

4.2.4.4、建立测试类

测试类在 src/test/java 中建立，下面测试类中注释掉的部分是不使用 Spring 时，一般情况下的一种测试方法；如果使用了 Spring 那么就可以使用注解的方式来引入配置文件和类，然后再将 service 接口对象注入，就可以进行测试了。如果测试成功，表示 Spring 和 Mybatis 已经整合成功了。输出信息使用的是 Log4j 打印到控制台。

 

TestMyBatis.java

package com.ssm.testmybatis;

import javax.annotation.Resource;


import org.apache.log4j.Logger;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;


import com.alibaba.fastjson.JSON;
import com.ssm.pojo.User;
import com.ssm.service.IUserService;


@RunWith(SpringJUnit4ClassRunner.class) // 表示继承了 SpringJUnit4ClassRunner 类
@ContextConfiguration(locations = { "classpath:spring-mybatis.xml" })


public class TestMyBatis {
private static Logger logger = Logger.getLogger(TestMyBatis.class);
// private ApplicationContext ac = null;
    @Resource
private IUserService userService = null;


</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> @Before
</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> public void before() {
</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> ac = new ClassPathXmlApplicationContext("applicationContext.xml");
</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> userService = (IUserService) ac.getBean("userService");
</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> }</span>



    @Test
    public void test() {
        User user = userService.getUserById(1);
        // System.out.println(user.getUserName());
        // logger.info("值："+user.getUserName());
        logger.info(JSON.toJSONString(user));
    }
}

 

测试：

先 clean 项目（可跳过），再 Maven->Update Project...（重点），就是为了更新项目设置，（右击项目 ->Run As->JUnit Test）

 

至此，完成 Spring 和 mybatis 这两大框架的整合，下面在继续进行 SpringMVC 的整合。

 

如测试失败请参考网友方法，一般 clean 项目和右击项目 ->Maven->Update Project... 更新一下项目设置都可以解决：

 

 

4.3、整合 SpringMVC

上面已经完成了 2 大框架的整合，SpringMVC 的配置文件单独放，然后在 web.xml 中配置整合。

 

4.3.1、配置 spring-mvc.xml

配置里面的注释也很详细，在此就不说了，主要是自动扫描控制器，视图模式，注解的启动这三个。

 

spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans  
                            http://www.springframework.org/schema/beans/spring-beans-4.0.xsd  
                            http://www.springframework.org/schema/context  
                            http://www.springframework.org/schema/context/spring-context-4.0.xsd  
                            http://www.springframework.org/schema/mvc  
                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)">避免IE执行AJAX时，返回JSON出现下载文件 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">bean </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="mappingJacksonHttpMessageConverter"</span><span style="color: rgba(255, 0, 0, 1)">
    class</span><span style="color: rgba(0, 0, 255, 1)">="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="supportedMediaTypes"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
        <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">list</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
            <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">value</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>text/html;charset=<span style="color: rgba(255, 255, 255, 1); background-color: rgba(255, 0, 0, 1)">UTF-8</span><span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">value</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
        <span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">list</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">property</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">bean</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 启动SpringMVC的注解功能，完成请求和注解POJO的映射 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">bean
    </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="messageConverters"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
        <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">list</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
            <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">ref </span><span style="color: rgba(255, 0, 0, 1)">bean</span><span style="color: rgba(0, 0, 255, 1)">="mappingJacksonHttpMessageConverter"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> JSON转换器 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
        <span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">list</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">property</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">bean</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 对静态资源的访问 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> &lt;mvc:resources mapping="/js/**" location="/js/" /&gt; &lt;mvc:resources mapping="/css/**" 
    location="/css/" /&gt; </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">context:component-scan </span><span style="color: rgba(255, 0, 0, 1)">base-package</span><span style="color: rgba(0, 0, 255, 1)">="<span style="color: rgba(255, 255, 255, 1); background-color: rgba(255, 0, 0, 1)">com.ssm.controller</span>"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 添加注解驱动 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">mvc:annotation-driven </span><span style="color: rgba(255, 0, 0, 1)">enable-matrix-variables</span><span style="color: rgba(0, 0, 255, 1)">="true"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 允许对静态资源文件的访问 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>

<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">mvc:default-servlet-handler </span><span style="color: rgba(0, 0, 255, 1)">/&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 定义跳转的文件的前后缀 ，视图模式配置 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">bean
    </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="org.springframework.web.servlet.view.InternalResourceViewResolver"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="prefix"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="/WEB-INF/jsp/"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="suffix"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">=".jsp"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">bean</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">bean </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="multipartResolver"</span><span style="color: rgba(255, 0, 0, 1)">
    class</span><span style="color: rgba(0, 0, 255, 1)">="org.springframework.web.multipart.commons.CommonsMultipartResolver"</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 默认编码 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="defaultEncoding"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="<span style="color: rgba(255, 255, 255, 1); background-color: rgba(255, 0, 0, 1)">UTF-8</span>"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 文件大小最大值 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="maxUploadSize"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="10485760000"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 内存中的最大值 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">property </span><span style="color: rgba(255, 0, 0, 1)">name</span><span style="color: rgba(0, 0, 255, 1)">="maxInMemorySize"</span><span style="color: rgba(255, 0, 0, 1)"> value</span><span style="color: rgba(0, 0, 255, 1)">="40960"</span> <span style="color: rgba(0, 0, 255, 1)">/&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">bean</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>



</beans>

 

 

4.3.2、配置 web.xml 文件

这里面对 spring-mybatis.xml 的引入以及配置的 spring-mvc 的 Servlet 就是为了完成 SSM 整合，之前 2 框架整合不需要在此处进行任何配置。配置一样有详细注释，不多解释了。

 

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">
    <display-name>Archetype Created Web Application</display-name>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> Spring和mybatis的配置文件 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">context-param</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">param-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>contextConfigLocation<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">param-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">param-value</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>classpath:spring-mybatis.xml<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">param-value</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">context-param</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 编码过滤器 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">filter</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">filter-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>encodingFilter<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">filter-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">filter-class</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>org.springframework.web.filter.CharacterEncodingFilter<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">filter-class</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">async-supported</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>true<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">async-supported</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">init-param</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
        <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">param-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>encoding<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">param-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
        <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">param-value</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span><span style="color: rgba(255, 255, 255, 1); background-color: rgba(255, 0, 0, 1)">UTF-8</span><span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">param-value</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">init-param</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">filter</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">filter-mapping</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">filter-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>encodingFilter<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">filter-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">url-pattern</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>/*<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">url-pattern</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">filter-mapping</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> Spring监听器 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">listener</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">listener-class</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>org.springframework.web.context.ContextLoaderListener<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">listener-class</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">listener</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 防止Spring内存溢出监听器 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">listener</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">listener-class</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>org.springframework.web.util.IntrospectorCleanupListener<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">listener-class</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">listener</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> Spring MVC servlet </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">servlet</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">servlet-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>SpringMVC<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">servlet-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">servlet-class</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>org.springframework.web.servlet.DispatcherServlet<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">servlet-class</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">init-param</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
        <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">param-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>contextConfigLocation<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">param-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
        <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">param-value</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>classpath:spring-mvc.xml<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">param-value</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">init-param</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">load-on-startup</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>1<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">load-on-startup</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">async-supported</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>true<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">async-supported</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">servlet</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">servlet-mapping</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">servlet-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>SpringMVC<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">servlet-name</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 128, 0, 1)">&lt;!--</span><span style="color: rgba(0, 128, 0, 1)"> 此处可以可以配置成*.do，对应struts的后缀习惯 </span><span style="color: rgba(0, 128, 0, 1)">--&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">url-pattern</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>/<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">url-pattern</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">servlet-mapping</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>

<span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">welcome-file-list</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">welcome-file</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>/index.html<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">welcome-file</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
    <span style="color: rgba(0, 0, 255, 1)">&lt;</span><span style="color: rgba(128, 0, 0, 1)">welcome-file</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>/index.jsp<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">welcome-file</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>
<span style="color: rgba(0, 0, 255, 1)">&lt;/</span><span style="color: rgba(128, 0, 0, 1)">welcome-file-list</span><span style="color: rgba(0, 0, 255, 1)">&gt;</span>



</web-app>

 

 

4.3.3、测试

至此已经完成了 SSM 三大框架的整合了，接下来测试一下，如果成功了，那么恭喜你，如果失败了，继续调试吧，作为程序员就是不停的与 BUG 做斗争！

 

4.3.3.1、新建 jsp 页面

User.jsp   此页面仅输出一下用户名，完成一个完整的简单流程。

 

User.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>测试</title>
</head>
<body>${user.userName}
</body>
</html>

 

4.3.3.2、建立 UserController 类

UserController.java

package com.ssm.controller;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;


import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;


import com.ssm.pojo.User;
import com.ssm.service.IUserService;


@Controller
@RequestMapping("/user")
public class UserController {


@Resource
</span><span style="color: rgba(0, 0, 255, 1)">private</span><span style="color: rgba(0, 0, 0, 1)"> IUserService userService;

@RequestMapping(</span>"/showUser"<span style="color: rgba(0, 0, 0, 1)">)
</span><span style="color: rgba(0, 0, 255, 1)">public</span><span style="color: rgba(0, 0, 0, 1)"> String toIndex(HttpServletRequest request, Model model) {
    </span><span style="color: rgba(0, 0, 255, 1)">int</span> userId = Integer.parseInt(request.getParameter("id"<span style="color: rgba(0, 0, 0, 1)">));
    User user </span>= <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.userService.getUserById(userId);
    model.addAttribute(</span>"user"<span style="color: rgba(0, 0, 0, 1)">, user);
    </span><span style="color: rgba(0, 0, 255, 1)">return</span> "User"<span style="color: rgba(0, 0, 0, 1)">;
}



}

 

4.3.3.3、部署项目

再次测试（右击项目 ->Run As->Run On Serser），输入地址：http://localhost:8080/app/user/showUser?id=1

如果成功请不要开心得太早，Maven->Update Project... 或将项目拷到其他机上后会立马出现 404！shu_lin 与其他博主都没有为此作出任何后续说明，为此写出此博文作出补充。

 

 

 

补充：

无论是 shu_lin 的SSM 框架——详细整合教程（Spring+SpringMVC+MyBatis）还是其他人的博文，都没有写明Maven->Update Project... 后会导致项目不能运行，会出现关于 Spring 包的 ClassNotFoundException 错误这个问题，

（对于我这个新手（Java 零基础新手，Eclipse 也不熟悉）头大了。。。花了近一个月来学这个 Hello World。就是卡在这个问题上。）

 

疑问开始，找 Maven

带着这个疑问？就第一时间找到 Maven，可是奇怪了，都包含了？！为什么还是找不到类？

 

从百度里找了多个答案后，终于找到问题所在，就是编译时没有复制依赖包到 WEB-INF/lib 里，编译时也没有生成 lib 文件夹

 

临时方法：（PS：感觉方法不太对，放弃了）

百度里有个方法就是教你修改.classpath，手动添加 /WEB-INF/lib

<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
    <attributes>
        <attribute name="maven.pomderived" value="true"/>
        <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
    </attributes>
</classpathentry>

 

临时方法：

右击项目 ->Properties->Deployment Assembly->Add->Java Build Path Entries->Maven Dependencies->Finish 完成添加，再点击 OK 关闭

再次测试（右击项目 ->Run As->Run On Serser），输入地址：http://localhost:8080/app/user/showUser?id=1，运行 OK！

 

完美解决方法：

可是毕竟是临时方法，Maven->Update Project... 后还是会导致项目不能运行，因为配置被 Maven 还原了！！！不行，这还是没有解决，还需要再找，几番周折终于找到了！

 

打开 cmd，定位到项目目录下，执行下面命令

cmd 命令（根据 Java Build Path 的列表得知，只要不改动包，就不需要再次运行此命令）

mvn eclipse:eclipse -Dwtpversion=2.0

 

可做成.bat 文件备用，放在项目根目录运行即可

cmd 命令

set current_path="%cd%"
mvn eclipse:eclipse -Dwtpversion=2.0
pause
exit

 

 

执行命令以后，clean 项目和 Maven->Update Project... 后，Deployment Assembly 和 Java Build Path 都有变化

 

再次测试（右击项目 ->Run As->Run On Serser），输入地址：http://localhost:8080/app/user/showUser?id=1，运行 OK！完美！

 

再看看 WEB-INF 里，终于自动生成 lib 文件夹