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过去几天我一直在处理资源（我对WSO2非常陌生，所以我仍然很慢），并且当我通过SoapUI向它提交请求时，它记录的一切它应该到<send/>调解员，然后转储以下错误：WSO2 ESB 4.9 - 发送中介导致错误
ERROR - Failed to submit the response {org.apache.synapse.transport.passthru.PassThroughHttpSender}
java.lang.NullPointerException
\t at org.apache.synapse.transport.passthru.util.SourceResponseFactory.create(SourceResponseFactory.java:64)
\t at org.apache.synapse.transport.passthru.PassThroughHttpSender.submitResponse(PassThroughHttpSender.java:462)
\t at org.apache.synapse.transport.passthru.PassThroughHttpSender.invoke(PassThroughHttpSender.java:267)
\t at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442)
\t at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:212)
\t at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:444)
\t at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:102)
\t at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:81)
\t at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:277)
\t at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.mediateFromContinuationStateStack(Axis2SynapseEnvironment.java:679)
\t at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:244)
\t at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:529)
\t at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:172)
\t at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
\t at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:247)
\t at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
\t at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
\t at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
\t at java.lang.Thread.run(Thread.java:745)
[2015-12-10 13:11:00,508] ERROR - Access-Control-Allow-Credentials:true,Cache-Control:no-cache,Content-Type:application/json,Etag:W/"2-mZFLkyvTelC5g8XnyQrpOw",Expires:-1,Pragma:no-cache,Vary:Origin, X-HTTP-Method-Override,Via:1.1 vegur,X-Content-Type-Options:nosniff,X-Powered-By:Express,<?xml version='1.0' encoding='utf-8'?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Body><jsonObject><TYPE></TYPE><NODE></NODE><STATUS>200 [OK]</STATUS></jsonObject></soapenv:Body></soapenv:Envelope> Unexpected error sending message back {org.apache.synapse.core.axis2.Axis2Sender}
org.apache.axis2.AxisFault: Failed to submit the response
\t at org.apache.synapse.transport.passthru.PassThroughHttpSender.handleException(PassThroughHttpSender.java:610)
\t at org.apache.synapse.transport.passthru.PassThroughHttpSender.invoke(PassThroughHttpSender.java:269)
\t at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442)
\t at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:212)
\t at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:444)
\t at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:102)
\t at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:81)
\t at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:277)
\t at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.mediateFromContinuationStateStack(Axis2SynapseEnvironment.java:679)
\t at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:244)
\t at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:529)
\t at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:172)
\t at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
\t at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:247)
\t at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
\t at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
\t at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
\t at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
\t at org.apache.synapse.transport.passthru.util.SourceResponseFactory.create(SourceResponseFactory.java:64)
\t at org.apache.synapse.transport.passthru.PassThroughHttpSender.submitResponse(PassThroughHttpSender.java:462)
\t at org.apache.synapse.transport.passthru.PassThroughHttpSender.invoke(PassThroughHttpSender.java:267)
\t ... 16 more的资源需要从了SoapUI一个JSON提交，像下面这样：
{"tests":[{"type":"DSS","node":"2"}]}
从该提交中，它绘制了系统的类型以测试（DSS）以及该系统上的哪个节点进行测试（2）。在这种情况下，它运行下面的DSS的顺序，以测试节点2，我们正在运行：
<sequence name="dss_node_2_seq" trace="disable" xmlns="http://ws.apache.org/ns/synapse">
<log level="custom">
<property name="[[ SQNC ]]" value="STARTING DSS2 SEQUENCE"/>
</log>
<call>
<endpoint key="dss_node_2"/>
</call>
</sequence>该序列显然然后调用dss_node_2端点这在目前点与一些模板有效的JSON一个typicode页：
<endpoint name="dss_node_2" xmlns="http://ws.apache.org/ns/synapse">
<http method="post" trace="disable" uri-template="http://jsonplaceholder.typicode.com/posts/1"/>
</endpoint>我已将资源放入Kobra.io page，以便您可以看到它并进行必要的更改。目前我正在DSS上测试它，但有几种可能的类型，每种类型都有一组节点。
如果任何人都可以说明为什么它在我抛出这些错误和如何解决它，那会是很有益的，并大加赞赏，因为我一直停留在这几个小时现在它变得相当沮丧！
这就是kobra页 –