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我正尝试从WSO2 ESB中的服务B向WSO2 DSS中的服务A发送消息。我生成使用JAX-WS客户端，可以访问一个直接从Java代码 ，但是当我相同的代码导出为Axis2的服务，并把它变成了ESB，我收到以下错误：从WSO2 ESB中调用WSO2 DSS中的服务
[2017-03-31 08:30:54,110] ERROR - RPCMessageReceiver org.wso2.carbon.core.services.echo.Echo.getEchoHttpSoap12Endpoint()Lorg/wso2/carbon/core/services/echo/EchoPortType;
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.synapse.transport.passthru.ServerWorker.processEntityEnclosingRequest(ServerWorker.java:395)
at org.apache.synapse.transport.passthru.ServerWorker.run(ServerWorker.java:142)
at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoSuchMethodError: org.wso2.carbon.core.services.echo.Echo.getEchoHttpSoap12Endpoint()Lorg/wso2/carbon/core/services/echo/EchoPortType;
at service.ChangeName.echoString(ChangeName.java:27)
at service.ChangeName.changeName(ChangeName.java:34)
... 15 more
[2017-03-31 08:30:54,126] ERROR - ServerWorker Error processing POST request for : /services/ChangeName.ChangeNameHttpSoap12Endpoint
org.apache.axis2.AxisFault: org.wso2.carbon.core.services.echo.Echo.getEchoHttpSoap12Endpoint()Lorg/wso2/carbon/core/services/echo/EchoPortType;
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:208)
at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.synapse.transport.passthru.ServerWorker.processEntityEnclosingRequest(ServerWorker.java:395)
at org.apache.synapse.transport.passthru.ServerWorker.run(ServerWorker.java:142)
at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
... 9 more
Caused by: java.lang.NoSuchMethodError: org.wso2.carbon.core.services.echo.Echo.getEchoHttpSoap12Endpoint()Lorg/wso2/carbon/core/services/echo/EchoPortType;
at service.ChangeName.echoString(ChangeName.java:27)
at service.ChangeName.changeName(ChangeName.java:34)
... 15 more
这是ESB以外的代码：
有任何建议可以解决这个问题吗？
“当我将相同的代码导出为Axis2服务并将其放入ESB时”是什么意思？既然你可以直接从突触代理调用你的DSS服务，我没有看到这样做的意义（当然除了测试）。无论如何，这个错误似乎指向你生成的客户端中缺少的类。你在ESB中将它安装在哪里？ –