使用Axis2这个框架进行webservice协议通讯，期间出了个问题，我（CLIENT）请求后，当服务端返回符合协议的SOAP异常报文，例如<soap:fault> ...

我的程序直接抛org.apache.axis2.AxisFault异常，导致连服务端给我们的报文都没有接收成功。

--请注意，是我连报文都没有接收成功，而不是接收成功后我解析失败了。

  1. try {
  2. ServiceClient serviceClient = new ServiceClient();
  3. Options options = new Options();
  4. //设置超时时间，单位毫秒
  5. options.setTimeOutInMilliSeconds(this.wsTimeOut);
  6. options.setTransportInProtocol(Constants.TRANSPORT_HTTP);
  7. options.setTo(new EndpointReference(this.wsEndpointAddress));
  8. options.setSoapVersionURI(org.apache.axiom.soap.SOAP12Constants.SOAP_ENVELOPE_NAMESPACE_URI);
  9. options.setAction(this.wsMethod);
  10. MessageContext requetMessageContext = new MessageContext();
  11. SOAPEnvelope env = this.getRequestEnvelope();
  12. log.info("version : "+ env.getVersion().getEnvelopeURI());
  13. requetMessageContext.setEnvelope(env);
  14. OperationClient opClient = serviceClient.createClient(ServiceClient.ANON_OUT_IN_OP);
  15. opClient.addMessageContext(requetMessageContext);
  16. opClient.setOptions(options);
  17. opClient.execute(true);
  18. MessageContext rspMC = opClient.getMessageContext("In");
  19. response = rspMC.getEnvelope().getBody().getFirstElement();
  20. log.info("应答报文: "+ rspMC.getEnvelope());
  21. } catch (AxisFault e) {
  22. this.errRspDesc = "xxxxx";
  23. log.error("soapDispatch AxisFault!");
  24. throw e;
  25. } catch (Exception e) {
  26. this.errRspDesc = "xxxxxxxxxxxxx！";
  27. log.error("soapDispatch Exception!");
  28. throw e;
  29. }
  1. try {
  2.          ServiceClient serviceClient = new ServiceClient();
  3.          Options options = new Options();
  4.          //设置超时时间，单位毫秒
  5.          options.setTimeOutInMilliSeconds(this.wsTimeOut);
  6.            options.setTransportInProtocol(Constants.TRANSPORT_HTTP);
  7.            options.setTo(new EndpointReference(this.wsEndpointAddress));
  8.            options.setSoapVersionURI(org.apache.axiom.soap.SOAP12Constants.SOAP_ENVELOPE_NAMESPACE_URI);
  9.            options.setAction(this.wsMethod);
  10.            MessageContext requetMessageContext = new MessageContext();
  11.            SOAPEnvelope env = this.getRequestEnvelope();
  12.            log.info("version : "+ env.getVersion().getEnvelopeURI());
  13.             requetMessageContext.setEnvelope(env);
  14.  
  15.             OperationClient opClient = serviceClient.createClient(ServiceClient.ANON_OUT_IN_OP);
  16.             opClient.addMessageContext(requetMessageContext);
  17.             opClient.setOptions(options);
  18.             opClient.execute(true);
  19.             MessageContext rspMC = opClient.getMessageContext("In");
  20.             response = rspMC.getEnvelope().getBody().getFirstElement();
  21.          log.info("应答报文: "+ rspMC.getEnvelope());
  22.       } catch (AxisFault e) {
  23.          this.errRspDesc = "xxxxx";
  24.          log.error("soapDispatch AxisFault!");
  25.          throw e;
  26.       } catch (Exception e) {
  27.          this.errRspDesc = "xxxxxxxxxxxxx！";
  28.          log.error("soapDispatch Exception!");
  29.          throw e;
  30.       }

当执行到发送请求opClient.execute(true);

服务端成功返回格式正常的SOAP异常报文，此时程序直接抛异常，走不到下面rspMC的获取，也就拿不到响应报文。

经过一段时间的查看Axis2源码，终于找到原因。

从opClient.execute(true); 入手，可以看到

  1. public final void execute(boolean block) throws AxisFault {
  2. this.sc.setLastOperationContext(this.oc);
  3. this.executeImpl(block);
  4. }
  1.  public final void execute(boolean block) throws AxisFault {
  2.         this.sc.setLastOperationContext(this.oc);
  3.         this.executeImpl(block);
  4.     }

再看this.executeImpl(block);

  1. public void executeImpl(boolean block) throws AxisFault {
  2. if(log.isDebugEnabled()) {
  3. log.debug("Entry: OutInAxisOperationClient::execute, " + block);
  4. }
  5. if(this.completed) {
  6. throw new AxisFault(Messages.getMessage("mepiscomplted"));
  7. } else {
  8. ConfigurationContext cc = this.sc.getConfigurationContext();
  9. MessageContext mc = this.oc.getMessageContext("Out");
  10. if(mc == null) {
  11. throw new AxisFault(Messages.getMessage("outmsgctxnull"));
  12. } else {
  13. this.prepareMessageContext(cc, mc);
  14. if(this.options.getTransportIn() == null && mc.getTransportIn() == null) {
  15. mc.setTransportIn(ClientUtils.inferInTransport(cc.getAxisConfiguration(), this.options, mc));
  16. } else if(mc.getTransportIn() == null) {
  17. mc.setTransportIn(this.options.getTransportIn());
  18. }
  19. boolean useAsync = false;
  20. if(!mc.getOptions().isUseSeparateListener()) {
  21. Boolean replyTo = (Boolean)mc.getProperty("UseAsyncOperations");
  22. if(log.isDebugEnabled()) {
  23. log.debug("OutInAxisOperationClient: useAsyncOption " + replyTo);
  24. }
  25. if(replyTo != null) {
  26. useAsync = replyTo.booleanValue();
  27. }
  28. }
  29. EndpointReference replyTo1 = mc.getReplyTo();
  30. if(replyTo1 != null) {
  31. if(replyTo1.hasNoneAddress()) {
  32. throw new AxisFault(replyTo1.getAddress() + "" + " can not be used with OutInAxisOperationClient , user either " + "fireAndForget or sendRobust)");
  33. }
  34. if(replyTo1.isWSAddressingAnonymous() && replyTo1.getAllReferenceParameters() != null) {
  35. mc.setProperty("includeOptionalHeaders", Boolean.TRUE);
  36. }
  37. String customReplyTo = (String)this.options.getProperty(Options.CUSTOM_REPLYTO_ADDRESS);
  38. if(!Options.CUSTOM_REPLYTO_ADDRESS_TRUE.equals(customReplyTo) && !replyTo1.hasAnonymousAddress()) {
  39. useAsync = true;
  40. }
  41. }
  42. if(!useAsync && !mc.getOptions().isUseSeparateListener()) {
  43. if(block) {
  44. this.send(mc);
  45. this.completed = true;
  46. } else {
  47. this.sc.getConfigurationContext().getThreadPool().execute(new OutInAxisOperationClient.NonBlockingInvocationWorker(this.callback, mc, this.axisCallback));
  48. }
  49. } else {
  50. this.sendAsync(useAsync, mc);
  51. }
  52. }
  53. }
  54. }
  1.  public void executeImpl(boolean block) throws AxisFault {
  2.         if(log.isDebugEnabled()) {
  3.             log.debug("Entry: OutInAxisOperationClient::execute, " + block);
  4.         }
  5.  
  6.         if(this.completed) {
  7.             throw new AxisFault(Messages.getMessage("mepiscomplted"));
  8.         } else {
  9.             ConfigurationContext cc = this.sc.getConfigurationContext();
  10.             MessageContext mc = this.oc.getMessageContext("Out");
  11.             if(mc == null) {
  12.                 throw new AxisFault(Messages.getMessage("outmsgctxnull"));
  13.             } else {
  14.                 this.prepareMessageContext(cc, mc);
  15.                 if(this.options.getTransportIn() == null && mc.getTransportIn() == null) {
  16.                     mc.setTransportIn(ClientUtils.inferInTransport(cc.getAxisConfiguration(), this.options, mc));
  17.                 } else if(mc.getTransportIn() == null) {
  18.                     mc.setTransportIn(this.options.getTransportIn());
  19.                 }
  20.  
  21.                 boolean useAsync = false;
  22.                 if(!mc.getOptions().isUseSeparateListener()) {
  23.                     Boolean replyTo = (Boolean)mc.getProperty("UseAsyncOperations");
  24.                     if(log.isDebugEnabled()) {
  25.                         log.debug("OutInAxisOperationClient: useAsyncOption " + replyTo);
  26.                     }
  27.  
  28.                     if(replyTo != null) {
  29.                         useAsync = replyTo.booleanValue();
  30.                     }
  31.                 }
  32.  
  33.                 EndpointReference replyTo1 = mc.getReplyTo();
  34.                 if(replyTo1 != null) {
  35.                     if(replyTo1.hasNoneAddress()) {
  36.                         throw new AxisFault(replyTo1.getAddress() + "" + " can not be used with OutInAxisOperationClient , user either " + "fireAndForget or sendRobust)");
  37.                     }
  38.  
  39.                     if(replyTo1.isWSAddressingAnonymous() && replyTo1.getAllReferenceParameters() != null) {
  40.                         mc.setProperty("includeOptionalHeaders", Boolean.TRUE);
  41.                     }
  42.  
  43.                     String customReplyTo = (String)this.options.getProperty(Options.CUSTOM_REPLYTO_ADDRESS);
  44.                     if(!Options.CUSTOM_REPLYTO_ADDRESS_TRUE.equals(customReplyTo) && !replyTo1.hasAnonymousAddress()) {
  45.                         useAsync = true;
  46.                     }
  47.                 }
  48.  
  49.                 if(!useAsync && !mc.getOptions().isUseSeparateListener()) {
  50.                     if(block) {
  51.                         this.send(mc);
  52.                         this.completed = true;
  53.                     } else {
  54.                         this.sc.getConfigurationContext().getThreadPool().execute(new OutInAxisOperationClient.NonBlockingInvocationWorker(this.callback, mc, this.axisCallback));
  55.                     }
  56.                 } else {
  57.                     this.sendAsync(useAsync, mc);
  58.                 }
  59.  
  60.             }
  61.         }
  62.     }

进send(mc)方法

  1. protected MessageContext send(MessageContext msgContext) throws AxisFault {
  2. MessageContext responseMessageContext = msgContext.getConfigurationContext().createMessageContext();
  3. responseMessageContext.setServerSide(false);
  4. responseMessageContext.setOperationContext(msgContext.getOperationContext());
  5. responseMessageContext.setOptions(new Options(this.options));
  6. responseMessageContext.setMessageID(msgContext.getMessageID());
  7. this.addMessageContext(responseMessageContext);
  8. responseMessageContext.setServiceContext(msgContext.getServiceContext());
  9. responseMessageContext.setAxisMessage(this.axisOp.getMessage("In"));
  10. AxisEngine.send(msgContext);
  11. responseMessageContext.setDoingREST(msgContext.isDoingREST());
  12. responseMessageContext.setProperty("TRANSPORT_HEADERS", msgContext.getProperty("TRANSPORT_HEADERS"));
  13. responseMessageContext.setProperty(HTTPConstants.MC_HTTP_STATUS_CODE, msgContext.getProperty(HTTPConstants.MC_HTTP_STATUS_CODE));
  14. responseMessageContext.setProperty("TRANSPORT_IN", msgContext.getProperty("TRANSPORT_IN"));
  15. responseMessageContext.setTransportIn(msgContext.getTransportIn());
  16. responseMessageContext.setTransportOut(msgContext.getTransportOut());
  17. this.handleResponse(responseMessageContext);
  18. return responseMessageContext;
  19. }
  1.  protected MessageContext send(MessageContext msgContext) throws AxisFault {
  2.         MessageContext responseMessageContext = msgContext.getConfigurationContext().createMessageContext();
  3.         responseMessageContext.setServerSide(false);
  4.         responseMessageContext.setOperationContext(msgContext.getOperationContext());
  5.         responseMessageContext.setOptions(new Options(this.options));
  6.         responseMessageContext.setMessageID(msgContext.getMessageID());
  7.         this.addMessageContext(responseMessageContext);
  8.         responseMessageContext.setServiceContext(msgContext.getServiceContext());
  9.         responseMessageContext.setAxisMessage(this.axisOp.getMessage("In"));
  10.         AxisEngine.send(msgContext);
  11.         responseMessageContext.setDoingREST(msgContext.isDoingREST());
  12.         responseMessageContext.setProperty("TRANSPORT_HEADERS", msgContext.getProperty("TRANSPORT_HEADERS"));
  13.         responseMessageContext.setProperty(HTTPConstants.MC_HTTP_STATUS_CODE, msgContext.getProperty(HTTPConstants.MC_HTTP_STATUS_CODE));
  14.         responseMessageContext.setProperty("TRANSPORT_IN", msgContext.getProperty("TRANSPORT_IN"));
  15.         responseMessageContext.setTransportIn(msgContext.getTransportIn());
  16.         responseMessageContext.setTransportOut(msgContext.getTransportOut());
  17.         this.handleResponse(responseMessageContext);
  18.         return responseMessageContext;
  19.     }

这里就是发送请求并接收响应的地方 再看倒数第二行this.handleResponse(responseMessageContext);

  1. protected void handleResponse(MessageContext responseMessageContext) throws AxisFault {
  2. responseMessageContext.setSoapAction((String)null);
  3. SOAPEnvelope resenvelope;
  4. if(responseMessageContext.getEnvelope() == null) {
  5. resenvelope = TransportUtils.createSOAPMessage(responseMessageContext);
  6. if(resenvelope == null) {
  7. throw new AxisFault(Messages.getMessage("blockingInvocationExpectsResponse"));
  8. }
  9. responseMessageContext.setEnvelope(resenvelope);
  10. }
  11. resenvelope = responseMessageContext.getEnvelope();
  12. if(resenvelope != null) {
  13. AxisEngine.receive(responseMessageContext);
  14. if(responseMessageContext.getReplyTo() != null) {
  15. this.sc.setTargetEPR(responseMessageContext.getReplyTo());
  16. }
  17. resenvelope = responseMessageContext.getEnvelope();
  18. if((resenvelope.hasFault() || responseMessageContext.isProcessingFault()) && this.options.isExceptionToBeThrownOnSOAPFault()) {
  19. throw Utils.getInboundFaultFromMessageContext(responseMessageContext);
  20. }
  21. }
  22. }
  1.    protected void handleResponse(MessageContext responseMessageContext) throws AxisFault {
  2.         responseMessageContext.setSoapAction((String)null);
  3.         SOAPEnvelope resenvelope;
  4.         if(responseMessageContext.getEnvelope() == null) {
  5.             resenvelope = TransportUtils.createSOAPMessage(responseMessageContext);
  6.             if(resenvelope == null) {
  7.                 throw new AxisFault(Messages.getMessage("blockingInvocationExpectsResponse"));
  8.             }
  9.  
  10.             responseMessageContext.setEnvelope(resenvelope);
  11.         }
  12.  
  13.         resenvelope = responseMessageContext.getEnvelope();
  14.         if(resenvelope != null) {
  15.             AxisEngine.receive(responseMessageContext);
  16.             if(responseMessageContext.getReplyTo() != null) {
  17.                 this.sc.setTargetEPR(responseMessageContext.getReplyTo());
  18.             }
  19.  
  20.             resenvelope = responseMessageContext.getEnvelope();
  21.             if((resenvelope.hasFault() || responseMessageContext.isProcessingFault()) && this.options.isExceptionToBeThrownOnSOAPFault()) {
  22.                 throw Utils.getInboundFaultFromMessageContext(responseMessageContext);
  23.             }
  24.         }
  25.  
  26.     }

这时，我们可以看到一个很有趣的方法， if((resenvelope.hasFault() || responseMessageContext.isProcessingFault()) 总算是跟我们的异常报文有关了。跟进去看一下

  1. public boolean hasFault() {
  2. QName payloadQName = this.getPayloadQName_Optimized();
  3. if(payloadQName != null && "Fault".equals(payloadQName.getLocalPart())) {
  4. String body1 = payloadQName.getNamespaceURI();
  5. return "http://schemas.xmlsoap.org/soap/envelope/".equals(body1) || "http://www.w3.org/2003/05/soap-envelope".equals(body1);
  6. } else {
  7. SOAPBody body = this.getBody();
  8. return body == null?false:body.hasFault();
  9. }
  10. }
  1.   public boolean hasFault() {
  2.         QName payloadQName = this.getPayloadQName_Optimized();
  3.         if(payloadQName != null && "Fault".equals(payloadQName.getLocalPart())) {
  4.             String body1 = payloadQName.getNamespaceURI();
  5.             return "http://schemas.xmlsoap.org/soap/envelope/".equals(body1) || "http://www.w3.org/2003/05/soap-envelope".equals(body1);
  6.         } else {
  7.             SOAPBody body = this.getBody();
  8.             return body == null?false:body.hasFault();
  9.         }
  10.     }

可以看到Axis2的内部处理机制，就是一但发现响应报文有Fault节点，它就要抛异常。总算找到源头了 那要如何解决这个问题 我们可以看到 if((resenvelope.hasFault() || responseMessageContext.isProcessingFault()) && this.options.isExceptionToBeThrownOnSOAPFault()) {                 throw Utils.getInboundFaultFromMessageContext(responseMessageContext);             } 这里还有一个判断条件， this.options.isExceptionToBeThrownOnSOAPFault() 当它为TRUE时才抛异常。 这就是options的一个参数，可配置，所以给我们的代码加上

  1. options.setExceptionToBeThrownOnSOAPFault(false);
  1. options.setExceptionToBeThrownOnSOAPFault(false);

就不抛异常了，能够正常获取并解析响应报文。 总结：一切的害怕源于对代码的神秘，未知，当你把它当成自己写的代码，去反编译，去阅读，那就不会再害怕！

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