WSO2 ESB 4.8.1错误publicId和systemId之间需要空格

Question

我们正在使用WSO2 ESB 4.8.1和JAVA 1.7.0_55。一直以来，当我们开始了ESB，使第一要求，我们收到此错误：

TID: [0] [ESB] [2015-04-22 10:51:31,067] ERROR {org.apache.synapse.transport.passthru.util.RelayUtils} - Error while building Passthrough stream {org.apache.synapse.transport.passthru.util.RelayUtils} 
org.apache.axiom.om.OMException: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,62] 
Message: White spaces are required between publicId and systemId. 
       at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296) 
       at org.apache.axiom.om.impl.llom.OMDocumentImpl.getOMDocumentElement(OMDocumentImpl.java:109) 
       at org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:570) 
       at org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:566) 
       at org.apache.synapse.transport.passthru.util.DeferredMessageBuilder.getDocument(DeferredMessageBuilder.java:129) 
       at org.apache.synapse.transport.passthru.util.RelayUtils.builldMessage(RelayUtils.java:107) 
       at org.apache.synapse.transport.passthru.util.RelayUtils.buildMessage(RelayUtils.java:82) 
       at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:68) 
       at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:47) 
       at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:131) 
       at org.apache.synapse.rest.Resource.process(Resource.java:297) 
       at org.apache.synapse.rest.API.process(API.java:298) 
       at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:76) 
       at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:50) 
       at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:220) 
       at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:488) 
       at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:170) 
       at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180) 
       at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:225) 
       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: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,62] 
Message: White spaces are required between publicId and systemId. 
       at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(XMLStreamReaderImpl.java:598) 
       at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225) 
       at org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34) 
       at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225) 
       at org.apache.axiom.util.stax.dialect.SJSXPStreamReaderWrapper.next(SJSXPStreamReaderWrapper.java:138) 
       at org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681) 
       at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214) 
       ... 22 more 
TID: [0] [ESB] [2015-04-22 10:51:31,073] ERROR {org.apache.synapse.mediators.base.SequenceMediator} - Error while building message {org.apache.synapse.mediators.base.SequenceMediator} 
org.apache.axis2.AxisFault: Error while building Passthrough stream 
       at org.apache.synapse.transport.passthru.util.RelayUtils.handleException(RelayUtils.java:236) 
       at org.apache.synapse.transport.passthru.util.RelayUtils.builldMessage(RelayUtils.java:111) 
       at org.apache.synapse.transport.passthru.util.RelayUtils.buildMessage(RelayUtils.java:82) 
       at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:68) 
       at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:47) 
       at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:131) 
       at org.apache.synapse.rest.Resource.process(Resource.java:297) 
       at org.apache.synapse.rest.API.process(API.java:298) 
       at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:76) 
       at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:50) 
       at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:220) 
       at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:488) 
       at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:170) 
       at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180) 
       at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:225) 
       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: org.apache.axiom.om.OMException: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,62] 
Message: White spaces are required between publicId and systemId. 
       at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296) 
       at org.apache.axiom.om.impl.llom.OMDocumentImpl.getOMDocumentElement(OMDocumentImpl.java:109) 
       at org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:570) 
       at org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:566) 
       at org.apache.synapse.transport.passthru.util.DeferredMessageBuilder.getDocument(DeferredMessageBuilder.java:129) 
       at org.apache.synapse.transport.passthru.util.RelayUtils.builldMessage(RelayUtils.java:107) 
       ... 17 more 
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,62] 
Message: White spaces are required between publicId and systemId. 
       at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(XMLStreamReaderImpl.java:598) 
       at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225) 
       at org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34) 
       at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225) 
       at org.apache.axiom.util.stax.dialect.SJSXPStreamReaderWrapper.next(SJSXPStreamReaderWrapper.java:138) 
       at org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681) 
       at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214) 
       ... 22 more 

在此之后，我们做同样的要求和一切工作正常...

任何建议，以避免该错误？与此错误

Answer 1

分析反应，我们看到的响应此消息：

"Error Code: 502 Proxy Error. The ISA Server denied the specified Uniform Resource Locator (URL). 

后调试源代码ESB，我们在“突触nhttp运输”类看到有一个错误在那里，虽然文件/ 'nonProxyHosts'中包含的repository/conf/axis2/axis2.xml值，第一次调用总是通过代理发送。

代理本身是减少流量的人，并且产生的错误是由它的响应激发的。

要解决创造了一个补丁更改类离开它，如下所示：

public HttpHost selectProxy(final HttpHost target) { 
    if (this.proxy != null) { 
    if (knownProxyHosts.contains(target.getHostName().toLowerCase(Locale.US))) { 
     return this.proxy; 
    } else if (knownProxyHosts.contains(target,getHostName().toLowerCase(Locale.US))) { 
     return null; 
    } else { 
     // we are encountering this host for the first time 
     if (!isByPass(target.getHostName().toLowerCase(Locale.US))) { 
     return this.proxy; 
     } else { 
     return null; 
     } 
    } 
    } 
    return this.proxy; 
} 

此外，WSO2已经被通知来纠正这个错误。