使用dubbo 写了一个测试例子 报错，求指导 org.springframework.beans.factory.BeanCreationException:

Question

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cn.itcast.service.TestService': Instantiation of bean failed; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1105)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1050)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:446)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:328)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4770)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5236)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:754)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:730)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:744)
at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1730)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:287)
at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:809)
at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:483)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:432)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:287)
at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:809)
at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at java.management/com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1466)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1307)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:688)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1406)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:827)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:359)
at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:688)
at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:389)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:835)
Caused by: java.lang.ExceptionInInitializerError
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1098)
... 59 more
Caused by: java.lang.IllegalStateException: fail to create adaptive instance: java.lang.IllegalStateException: Can not create adaptive extension interface com.alibaba.dubbo.rpc.Protocol, cause: java.io.IOException: invalid constant type: 18
at com.alibaba.dubbo.common.extension.ExtensionLoader.getAdaptiveExtension(ExtensionLoader.java:448)
at com.alibaba.dubbo.config.ServiceConfig.<clinit>(ServiceConfig.java:74)
... 67 more
Caused by: java.lang.IllegalStateException: Can not create adaptive extension interface com.alibaba.dubbo.rpc.Protocol, cause: java.io.IOException: invalid constant type: 18
at com.alibaba.dubbo.common.extension.ExtensionLoader.createAdaptiveExtension(ExtensionLoader.java:719)
at com.alibaba.dubbo.common.extension.ExtensionLoader.getAdaptiveExtension(ExtensionLoader.java:444)
... 68 more
Caused by: java.lang.RuntimeException: java.io.IOException: invalid constant type: 18
at javassist.CtClassType.getClassFile2(CtClassType.java:203)
at javassist.CtClassType.subtypeOf(CtClassType.java:303)
at javassist.compiler.MemberResolver.compareSignature(MemberResolver.java:247)
at javassist.compiler.MemberResolver.lookupMethod(MemberResolver.java:119)
at javassist.compiler.MemberResolver.lookupMethod(MemberResolver.java:96)
at javassist.compiler.MemberCodeGen.atMethodCallCore(MemberCodeGen.java:561)
at javassist.compiler.MemberCodeGen.atCallExpr(MemberCodeGen.java:523)
at javassist.compiler.JvstCodeGen.atCallExpr(JvstCodeGen.java:243)
at javassist.compiler.ast.CallExpr.accept(CallExpr.java:45)
at javassist.compiler.MemberCodeGen.atCallExpr(MemberCodeGen.java:496)
at javassist.compiler.JvstCodeGen.atCallExpr(JvstCodeGen.java:243)
at javassist.compiler.ast.CallExpr.accept(CallExpr.java:45)
at javassist.compiler.MemberCodeGen.atCallExpr(MemberCodeGen.java:496)
at javassist.compiler.JvstCodeGen.atCallExpr(JvstCodeGen.java:243)
at javassist.compiler.ast.CallExpr.accept(CallExpr.java:45)
at javassist.compiler.MemberCodeGen.atCallExpr(MemberCodeGen.java:496)
at javassist.compiler.JvstCodeGen.atCallExpr(JvstCodeGen.java:243)
at javassist.compiler.ast.CallExpr.accept(CallExpr.java:45)
at javassist.compiler.CodeGen.atBinExpr(CodeGen.java:963)
at javassist.compiler.ast.BinExpr.accept(BinExpr.java:40)
at javassist.compiler.JvstCodeGen.atMethodArgs(JvstCodeGen.java:357)
at javassist.compiler.MemberCodeGen.atMethodCallCore(MemberCodeGen.java:555)
at javassist.compiler.MemberCodeGen.atNewExpr(MemberCodeGen.java:301)
at javassist.compiler.ast.NewExpr.accept(NewExpr.java:72)
at javassist.compiler.CodeGen.compileExpr(CodeGen.java:229)
at javassist.compiler.CodeGen.atThrowStmnt(CodeGen.java:627)
at javassist.compiler.CodeGen.atStmnt(CodeGen.java:364)
at javassist.compiler.ast.Stmnt.accept(Stmnt.java:49)
at javassist.compiler.CodeGen.atIfStmnt(CodeGen.java:390)
at javassist.compiler.CodeGen.atStmnt(CodeGen.java:354)
at javassist.compiler.ast.Stmnt.accept(Stm

Answer 1

这不提示的很明显吗， bean创建失败

Answer 2

cn.itcast.service.TestService 这个bean创建失败了，找下具体原因

Answer 3

检查Service名称是否与dubbo中配置相同，还有@Service注解有没有写

Answer 4

谢谢 问题解决了，是因为我使用的jdk版本太高了，我使用是jdk12，改为jdk1.8以后就好了，谢谢啦。

Answer 5

我今天在学习搭建一个入门的dubbo案例的时候，写完服务者项目后，使用项目内置tomcat插件运行，也出现了这个报错。我检查了所有可能的出错点:包括是否使用了阿里巴巴而不是Spring的@Service注解，配置文件包扫描路径是否正确，虚拟机zookeeper是否开启，包括注册地址是否正确，仍然不行。最后想到了是否跟防火墙有关，查看了之后防火墙是开启状态，关闭了之后再次启动，成功了。如果我以上提到的你都没有问题，可能你跟我也是一样的问题。