org.glassfish.jersey.server.internal.process.MappableException: org.apache.catalina.connector.ClientAbortException: java.net.SocketException:

Question

我是澤西島和 tomcat 的新手。 我有一個托管在 tomcat7 上的網絡服務，它在一些處理后返回一個 zip 文件。
我低於異常

org.glassfish.jersey.server.internal.process.MappableException: org.apache.catalina.connector.ClientAbortException: java.net.SocketException: Connection timed out (Write failed)
    at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:92)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
    at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
    at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711)
    at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444)
    at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434)
    at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
    at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:221)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.connector.ClientAbortException: java.net.SocketException: Connection timed out (Write failed)
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:407)
    at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:371)
    at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:432)
    at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:420)
    at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:91)
    at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:84)
    at org.glassfish.jersey.servlet.internal.ResponseWriter$NonCloseableOutputStreamWrapper.write(ResponseWriter.java:320)
    at org.glassfish.jersey.message.internal.CommittingOutputStream.write(CommittingOutputStream.java:218)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$UnCloseableOutputStream.write(WriterInterceptorExecutor.java:294)
    at org.glassfish.jersey.message.internal.ByteArrayProvider.writeTo(ByteArrayProvider.java:96)
    at org.glassfish.jersey.message.internal.ByteArrayProvider.writeTo(ByteArrayProvider.java:60)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
    at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
    at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86)
    ... 39 more
Caused by: java.net.SocketException: Connection timed out (Write failed)
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
    at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:215)
    at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:480)
    at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:366)
    at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:240)
    at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:119)
    at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:192)
    at org.apache.coyote.Response.doWrite(Response.java:499)
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:402)
    ... 55 more

此代碼適用於在更短的時間內創建的較小文件，但在經過大約 6-8 分鍾的一些處理后，如果文件大小為 700-800kb，則會出現異常。

PS：請求來自托管在 tomcat 上的 webservice，然后通過負載均衡器對不同的 VM 進行 RMI 調用。

Answer 1

根據異常信息和您的描述，根據我的理解，我認為問題是由 Jersey 的同步處理模式引起的，需要如下。

服務器上的請求處理默認工作在同步處理模式下，這意味着請求的客戶端連接在單個 I/O 容器線程中處理。 一旦處理請求的線程返回到 I/O 容器，容器就可以安全地假設請求處理已完成，並且可以安全地釋放客戶端連接，包括與該連接關聯的所有資源。 該模型通常足以處理處理資源方法執行所需時間相對較短的請求。 但是，在已知資源方法執行需要很長時間來計算結果的情況下，應使用服務器端異步處理模型。 在這個模型中，請求處理線程和客戶端連接之間的關聯被破壞了。 處理傳入請求的 I/O 容器可能不再假設當請求處理線程返回時可以安全地關閉客戶端連接。 相反，需要公開用於顯式掛起、恢復和關閉客戶端連接的工具。 請注意，使用服務器端異步處理模型不會提高客戶端感知的請求處理時間。 然而，它會增加服務器的吞吐量，通過將初始請求處理線程釋放回 I/O 容器，同時請求可能仍在隊列中等待處理，或者處理可能仍在另一個專用線程上運行。 釋放的 I/O 容器線程可用於接受和處理新的傳入請求連接。

所以在沒有你的代碼的情況下，我的建議是請參考球衣官方文檔11.1. Asynchronous Server API 用於重寫處理 zip 文件的代碼的11.1. Asynchronous Server API 。 希望能幫助到你。