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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。
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
dependencies
dependency
groupId org.springframework.boot /groupId
artifactId spring-boot-dependencies /artifactId
version 2.1.1.RELEASE /version
type pom /type
scope import /scope
/dependency
/dependencies
dependency
groupId io.seata /groupId
artifactId seata-spring-boot-starter /artifactId
version 1.4.0 /version
dependency
groupId com.101tec /groupId
artifactId zkclient /artifactId
version 0.11 /version
/dependency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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