com.alibaba.dubbo.rpc.RpcException: Failed to invoke the method findUserByUserNo in the service wusc.edu.facade.user.service.PmsUserFacade.

017-04-25 10:55:30,505  INFO [AbstractRegistry.java:302] :  [DUBBO] Register: consumer://192.168.1.101/wusc.edu.facade.user.service.PmsUserFacade?application=edu-web-boss&category=consumers&check=false&dubbo=2.5.3&interface=wusc.edu.facade.user.service.PmsUserFacade&methods=updateUserPwd,update,listPage,findUserByUserNo,getById,deleteUserById,create&pid=6592&revision=1.0-SNAPSHOT&side=consumer&timestamp=1493088930325, dubbo version: 2.5.3, current host: 192.168.1.101
2017-04-25 10:55:30,622  INFO [AbstractRegistry.java:325] :  [DUBBO] Subscribe: consumer://192.168.1.101/wusc.edu.facade.user.service.PmsUserFacade?application=edu-web-boss&category=providers,configurators,routers&check=false&dubbo=2.5.3&interface=wusc.edu.facade.user.service.PmsUserFacade&methods=updateUserPwd,update,listPage,findUserByUserNo,getById,deleteUserById,create&pid=6592&revision=1.0-SNAPSHOT&side=consumer&timestamp=1493088930325, dubbo version: 2.5.3, current host: 192.168.1.101
2017-04-25 10:55:30,862  INFO [AbstractRegistry.java:422] :  [DUBBO] Notify urls for subscribe url consumer://192.168.1.101/wusc.edu.facade.user.service.PmsUserFacade?application=edu-web-boss&category=providers,configurators,routers&check=false&dubbo=2.5.3&interface=wusc.edu.facade.user.service.PmsUserFacade&methods=updateUserPwd,update,listPage,findUserByUserNo,getById,deleteUserById,create&pid=6592&revision=1.0-SNAPSHOT&side=consumer&timestamp=1493088930325, urls: [empty://192.168.1.101/wusc.edu.facade.user.service.PmsUserFacade?application=edu-web-boss&category=providers&check=false&dubbo=2.5.3&interface=wusc.edu.facade.user.service.PmsUserFacade&methods=updateUserPwd,update,listPage,findUserByUserNo,getById,deleteUserById,create&pid=6592&revision=1.0-SNAPSHOT&side=consumer&timestamp=1493088930325, empty://192.168.1.101/wusc.edu.facade.user.service.PmsUserFacade?application=edu-web-boss&category=configurators&check=false&dubbo=2.5.3&interface=wusc.edu.facade.user.service.PmsUserFacade&methods=updateUserPwd,update,listPage,findUserByUserNo,getById,deleteUserById,create&pid=6592&revision=1.0-SNAPSHOT&side=consumer&timestamp=1493088930325, empty://192.168.1.101/wusc.edu.facade.user.service.PmsUserFacade?application=edu-web-boss&category=routers&check=false&dubbo=2.5.3&interface=wusc.edu.facade.user.service.PmsUserFacade&methods=updateUserPwd,update,listPage,findUserByUserNo,getById,deleteUserById,create&pid=6592&revision=1.0-SNAPSHOT&side=consumer&timestamp=1493088930325], dubbo version: 2.5.3, current host: 192.168.1.101
2017-04-25 10:55:30,866  INFO [ReferenceConfig.java:423] :  [DUBBO] Refer dubbo service wusc.edu.facade.user.service.PmsUserFacade from url zookeeper://192.168.1.101:2181/com.alibaba.dubbo.registry.RegistryService?application=edu-web-boss&check=false&dubbo=2.5.3&interface=wusc.edu.facade.user.service.PmsUserFacade&methods=updateUserPwd,update,listPage,findUserByUserNo,getById,deleteUserById,create&pid=6592&revision=1.0-SNAPSHOT&side=consumer&timestamp=1493088930325, dubbo version: 2.5.3, current host: 192.168.1.101
2017-04-25 10:55:37,259 ERROR [PmsLoginAction.java:136] : login exception:
com.alibaba.dubbo.rpc.RpcException: Failed to invoke the method findUserByUserNo in the service wusc.edu.facade.user.service.PmsUserFacade. No provider available for the service wusc.edu.facade.user.service.PmsUserFacade from registry 192.168.1.101:2181 on the consumer 192.168.1.101 using the dubbo version 2.5.3. Please check if the providers have been started and registered.
    at com.alibaba.dubbo.rpc.cluster.support.AbstractClusterInvoker.checkInvokers(AbstractClusterInvoker.java:246)
    at com.alibaba.dubbo.rpc.cluster.support.FailoverClusterInvoker.doInvoke(FailoverClusterInvoker.java:55)
    at com.alibaba.dubbo.rpc.cluster.support.AbstractClusterInvoker.invoke(AbstractClusterInvoker.java:227)
    at com.alibaba.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker.invoke(MockClusterInvoker.java:72)
    at com.alibaba.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:52)
    at com.alibaba.dubbo.common.bytecode.proxy0.findUserByUserNo(proxy0.java)
    at wusc.edu.web.boss.action.PmsLoginAction.userLogin(PmsLoginAction.java:60)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:450)
    at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:289)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:252)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:239)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:563)
    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Unknown Source)
2017-04-25 10:55:38,235 ERROR [PmsLoginAction.java:136] : login exception:
com.alibaba.dubbo.rpc.RpcException: Failed to invoke the method findUserByUserNo in the service wusc.edu.facade.user.service.PmsUserFacade. No provider available for the service wusc.edu.facade.user.service.PmsUserFacade from registry 192.168.1.101:2181 on the consumer 192.168.1.101 using the dubbo version 2.5.3. Please check if the providers have been started and registered.
    at com.alibaba.dubbo.rpc.cluster.support.AbstractClusterInvoker.checkInvokers(AbstractClusterInvoker.java:246)
    at com.alibaba.dubbo.rpc.cluster.support.FailoverClusterInvoker.doInvoke(FailoverClusterInvoker.java:55)
    at com.alibaba.dubbo.rpc.cluster.support.AbstractClusterInvoker.invoke(AbstractClusterInvoker.java:227)
    at com.alibaba.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker.invoke(MockClusterInvoker.java:72)
    at com.alibaba.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:52)
    at com.alibaba.dubbo.common.bytecode.proxy0.findUserByUserNo(proxy0.java)
    at wusc.edu.web.boss.action.PmsLoginAction.userLogin(PmsLoginAction.java:60)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:450)
    at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:289)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:252)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:239)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:563)
    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Unknown Source)

上面的错误 百度查了不少端口已经开放 也不是防火墙问题，也有说是序列化问题 查了下基类就是可序列化的也排除了

1，需要进行实例化的类没有进行实例化，具体没有实例化的类会在错误信息中显示，在错误信息中搜索“Serializable”

即可找到将其实现序列化可消除错误。

2，是在使用Dubbo提供服务是在主机上启动了虚拟机的网络，在Windows中具体可以，在运行中输入“CMD”在CMD窗口中输入"ifconfig"命令查看，

这些问题都排查之后 需要注意

检查这个没问题后 继续查。

如果是java报错没有提供者 就需要思考谁是提供者，谁是消费者。我一直以为是zookeeper来 其实zookeeper是个注册中心他是与消费者提供者接触的。

正确应该是edu-service-user工程下 src/test/java dubbo.test.DubboProvider.java 先run as启动 提供者这个工程已经启动了

下面开始 edu-web-boss maven build 启动 访问localhsot 

http://localhost:8080/edu-web-boss

success！