我的JSF页面中有一个使用primefaces的下载链接。 当您单击它时，浏览器（而不是程序）会打开一个对话框询问（打开，保存，关闭）。我使用eclipse默认浏览器来查看我的Web应用程序。 因此，如果单击“打开”或“保存”，将下载文件。一切都好。 但如果你点击取消一切都失败了。我收到的错误如下。我在会话范围内有bean。
WARNING: org.apache.catalina.connector.ClientAbortException: java.io.IOException: An existing connection was forcibly closed by the remote host
javax.faces.FacesException: org.apache.catalina.connector.ClientAbortException: java.io.IOException: An existing connection was forcibly closed by the remote host
at org.primefaces.component.filedownload.FileDownloadActionListener.processAction(FileDownloadActionListener.java:81)
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:772)
at javax.faces.component.UICommand.broadcast(UICommand.java:300)
at javax.faces.component.UIData.broadcast(UIData.java:912)
at org.primefaces.component.datalist.DataList.broadcast(DataList.java:248)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:775)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1267)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:662)
Caused by: org.apache.catalina.connector.ClientAbortException: java.io.IOException: An existing connection was forcibly closed by the remote host
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:382)
at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:351)
at org.apache.catalina.connector.Response.flushBuffer(Response.java:645)
at org.apache.catalina.connector.ResponseFacade.flushBuffer(ResponseFacade.java:326)
at com.sun.faces.context.ExternalContextImpl.responseFlushBuffer(ExternalContextImpl.java:855)
at org.primefaces.component.filedownload.FileDownloadActionListener.processAction(FileDownloadActionListener.java:76)
... 40 more
Caused by: java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:33)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:69)
at sun.nio.ch.IOUtil.write(IOUtil.java:40)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:336)
at com.sun.grizzly.util.OutputWriter.flushChannel(OutputWriter.java:106)
at com.sun.grizzly.util.OutputWriter.flushChannel(OutputWriter.java:74)
at com.sun.grizzly.http.SocketChannelOutputBuffer.flushChannel(SocketChannelOutputBuffer.java:321)
at com.sun.grizzly.http.SocketChannelOutputBuffer.flushBuffer(SocketChannelOutputBuffer.java:392)
at com.sun.grizzly.http.SocketChannelOutputBuffer.flush(SocketChannelOutputBuffer.java:370)
at com.sun.grizzly.http.ProcessorTask.action(ProcessorTask.java:1174)
at com.sun.grizzly.tcp.Response.action(Response.java:266)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:378)
... 45 more
答案 0 :(得分：1)
看起来有2个或更多一致的文件下载请求。当您提交一个文件下载请求并在服务器下载请求之前/同时请求相同文件时，会发生这种情况。
如果您将下载管理器应用程序集成到浏览器中，例如 Internet Download Manager ，通常会请求两次文件下载，则会发生这种情况。