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依赖冲突报错CAUSED BY: JAVA.LANG.CLASSNOTFOUNDEXCEPTION: ORG.APACHE.DUBBO.CONFIG.SPRING.UTIL.BEANREGISTRAR 

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依赖冲突报错 Caused by: java.lang.ClassNotFoundException: org.apache.dubbo.config.spring.util.BeanRegistrar

在运行 Spring boot 项目整合 dubbo 的时候报了下面的错误：

java.lang.NoClassDefFoundError: org/apache/dubbo/config/spring/util/BeanRegistrar
	at org.apache.dubbo.spring.boot.beans.factory.config.OverrideBeanDefinitionRegistryPostProcessor.postProcessBeanDefinitionRegistry(OverrideBeanDefinitionRegistryPostProcessor.java:36) ~[dubbo-spring-boot-autoconfigure-compatible-2.7.4.1.jar:2.7.4.1]
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:71) ~[spring-context-5.2.10.RELEASE.jar:5.2.10.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:707) ~[spring-context-5.2.10.RELEASE.jar:5.2.10.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:533) ~[spring-context-5.2.10.RELEASE.jar:5.2.10.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.5.RELEASE.jar:2.3.5.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.5.RELEASE.jar:2.3.5.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.5.RELEASE.jar:2.3.5.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) [spring-boot-2.3.5.RELEASE.jar:2.3.5.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.5.RELEASE.jar:2.3.5.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.5.RELEASE.jar:2.3.5.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.5.RELEASE.jar:2.3.5.RELEASE]
	at top.jacktgq.hello.apache.dubbo.consumer.ConsumerApplication.main(ConsumerApplication.java:14) [classes/:na]
Caused by: java.lang.ClassNotFoundException: org.apache.dubbo.config.spring.util.BeanRegistrar
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_131]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_131]
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) ~[na:1.8.0_131]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_131]
	... 12 common frames omitted

原因是在引入 jar 的时候发生了冲突

<dependency>
    <groupId>org.apache.dubbo</groupId>
    <artifactId>dubbo-spring-boot-actuator</artifactId>
    <version>${dubbo-actuator.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

只需要把上面那个依赖注释掉就不报错了