Spring Boot + Zookeeper + Dubbo + Seata 整合后无法启动jar包怎么办，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

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• 前言

Spring Boot + Zookeeper + Dubbo + Seata 整合，IDEA启动项目报错，在tomcat中则可以运行。

• 版本：

• Zookeeper 3.6.1

• Dubbo 3.7

• Seata 1.4  

• 报错异常信息

22:36:01.157 [restartedMain] WARN  o.a.c.l.WebappClassLoaderBase - [log,173] - The web application [ROOT] appears to have started a thread named [Druid-ConnectionPool-Destroy-92732034] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.lang.Thread.sleep(Native Method)
 com.alibaba.druid.pool.DruidDataSource$DestroyConnectionThread.run(DruidDataSource.java:2641)
22:36:01.159 [restartedMain] WARN  o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext - [refresh,554] - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
22:36:01.182 [restartedMain] ERROR o.s.b.SpringApplication - [reportFailure,858] - Application run failed
org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:157)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:540)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
    at com.xuanzhen.CouponApplication.main(CouponApplication.java:27)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)

Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceWrapper: Common causes of this problem include using a final class or a non-visible class; nested exception is org.springframework.cglib.core.CodeGenerationException: java.lang.IllegalAccessError-->class com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceWrapper$$EnhancerBySpringCGLIB$$3ec0b0c8 cannot access its superclass com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceWrapper
    at org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.java:208)
    at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:110)
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.createProxy(AbstractAutoProxyCreator.java:473)
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:352)
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:301)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:434)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1749)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576)
    ... 152 common frames omitted
    
Caused by: java.lang.IllegalAccessError: class com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceWrapper$$EnhancerBySpringCGLIB$$3ec0b0c8 cannot access its superclass com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceWrapper
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
    at sun.reflect.GeneratedMethodAccessor37.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:523)
    ... 173 common frames omitted

Process finished with exit code 0
 

项目maven依赖

        
            
                org.springframework.boot
                spring-boot-dependencies
                2.1.1.RELEASE
                pom
                import
            
        
		
			io.seata
			seata-spring-boot-starter
			1.4.0
		
			com.101tec
			zkclient
			0.11
		

尝试使用网上的方式解决，排除 servlet-api、guava、tomcat依赖冲突等等，均没有解决。

• 解决

最后，将 Seata客户端配置文件中默认为 false 的 use-jdk-proxy 改为 true，问题解决。

seata:
  enabled: true
  application-id: coupon
  tx-service-group: my_test_tx_group
  enable-auto-data-source-proxy: true
  data-source-proxy-mode: AT
  use-jdk-proxy: true
  excludes-for-auto-proxying: firstClassNameForExclude,secondClassNameForExclude
......

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