JAX-WS Web服务客户端：服务器发送了HTTP状态代码504：网关超时

Question

我正在使用JAX-Ws客户端调用Web服务。该Web服务运行一段时间（例如20-30分钟）。 但是，3-4分钟后，我在客户端收到以下异常。

The server sent HTTP status code 504: Gateway Time-out:com.sun.xml.internal.ws.client.ClientTransportException: The server sent HTTP status code 504: Gateway Time-out
    at com.sun.xml.internal.ws.transport.http.client.HttpTransportPipe.checkStatusCode(HttpTransportPipe.java:296)
    at com.sun.xml.internal.ws.transport.http.client.HttpTransportPipe.createResponsePacket(HttpTransportPipe.java:245)
    at com.sun.xml.internal.ws.transport.http.client.HttpTransportPipe.process(HttpTransportPipe.java:203)
    at com.sun.xml.internal.ws.transport.http.client.HttpTransportPipe.processRequest(HttpTransportPipe.java:122)
    at com.sun.xml.internal.ws.transport.DeferredTransportPipe.processRequest(DeferredTransportPipe.java:95)
    at com.sun.xml.internal.ws.api.pipe.Fiber.__doRun(Fiber.java:626)
    at com.sun.xml.internal.ws.api.pipe.Fiber._doRun(Fiber.java:585)
    at com.sun.xml.internal.ws.api.pipe.Fiber.doRun(Fiber.java:570)
    at com.sun.xml.internal.ws.api.pipe.Fiber.runSync(Fiber.java:467)
    at com.sun.xml.internal.ws.client.Stub.process(Stub.java:308)
    at com.sun.xml.internal.ws.client.sei.SEIStub.doProcess(SEIStub.java:146)
    at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:98)
    at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:78)
    at com.sun.xml.internal.ws.client.sei.SEIStub.invoke(SEIStub.java:129)
    at com.sun.proxy.$Proxy31.processRequest(Unknown Source)
    at com.fmer.bsc.test.EdxWebServiceInvokerThread.call(EdxWebServiceInvokerThread.java:57)
    at com.fmer.bsc.test.EdxWebServiceInvokerThread.call(EdxWebServiceInvokerThread.java:1)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
    at java.util.concurrent.FutureTask.run(FutureTask.java:166)
    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:724) 

我可能是因为客户端超时而添加了超时变量，如下所示。仍然没有运气。 另外在服务器上，我看到Web服务仍在执行。

private static Integer timeOut = new Integer((10 * 60 * 60 * 1000)); //Read as 1O hrs * 60 min * 60 seconds * 1 milli second


//Setting the Request timeout and connection time out 
EdxWebServiceImplService edxWebservice = new EdxWebServiceImplService(WsURL);
edxServicePort = edxWebservice.getEdxWebServiceImplPort();
BindingProvider edxWebserviceBindingProvider  = (BindingProvider)edxServicePort;

//In milli Seconds...
edxWebserviceBindingProvider.getRequestContext().put(JAXWSProperties.CONNECT_TIMEOUT,timeout);
edxWebserviceBindingProvider.getRequestContext().put(JAXWSProperties.REQUEST_TIMEOUT,timeOut);

//Now invoke the webservice....

Answer 1

我认为问题出在apache httpd网络服务器上，默认超时时间为120秒。

我们所有的Web服务调用都经过负载平衡器（Apache httpd服务器），然后将其发送到Jboss应用服务器。

因此更改了appache webserver的httpd.conf文件中的以下属性值。

 Timeout 120 

至

Timeout 18000

即5小时

此更改是对JAX-WS客户端代码中的更改的补充。