EOFException总是由远程主机引起的吗？

时间：2017-09-08 10:21:39

标签： java spring sockets

我有一个客户端通过套接字将数据发送到主机。偶尔我会得到java.io.EOFException。

问题是：我怎么知道谁导致套接字关闭？是否总是引发异常，因为远程主机关闭了套接字？

或者它是否也可能是内部网络连接问题？还是来自我的ISP？

org.springframework.messaging.MessagingException: Dispatcher failed to deliver Message; nested exception is org.springframework.messaging.MessagingException: Exception while awaiting reply; nested exception is java.io.EOFException: Connection is closed
    at org.springframework.integration.dispatcher.AbstractDispatcher.wrapExceptionIfNecessary(AbstractDispatcher.java:133) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:120) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:148) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:121) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:89) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:423) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:373) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115) ~[spring-messaging-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.messaging.core.GenericMessagingTemplate.doSendAndReceive(GenericMessagingTemplate.java:150) ~[spring-messaging-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.messaging.core.GenericMessagingTemplate.doSendAndReceive(GenericMessagingTemplate.java:45) ~[spring-messaging-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.messaging.core.AbstractMessagingTemplate.sendAndReceive(AbstractMessagingTemplate.java:42) ~[spring-messaging-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.integration.core.MessagingTemplate.sendAndReceive(MessagingTemplate.java:97) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.core.MessagingTemplate.sendAndReceive(MessagingTemplate.java:38) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.messaging.core.AbstractMessagingTemplate.sendAndReceive(AbstractMessagingTemplate.java:37) ~[spring-messaging-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_131]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_131]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_131]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]

Caused by: org.springframework.messaging.MessagingException: Exception while awaiting reply; nested exception is java.io.EOFException: Connection is closed
    at org.springframework.integration.ip.tcp.TcpOutboundGateway$AsyncReply.getReply(TcpOutboundGateway.java:322) ~[spring-integration-ip-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.ip.tcp.TcpOutboundGateway.handleRequestMessage(TcpOutboundGateway.java:139) ~[spring-integration-ip-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.handler.AbstractReplyProducingMessageHandler$AdvisedRequestHandler.handleRequestMessage(AbstractReplyProducingMessageHandler.java:178) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at sun.reflect.GeneratedMethodAccessor980.invoke(Unknown Source) ~[?:?]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_131]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_131]
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333) ~[spring-aop-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) ~[spring-aop-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.integration.handler.advice.AbstractRequestHandlerAdvice$1.execute(AbstractRequestHandlerAdvice.java:75) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.handler.advice.AbstractRequestHandlerAdvice.invoke(AbstractRequestHandlerAdvice.java:70) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) ~[spring-aop-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at com.sun.proxy.$Proxy1241.handleRequestMessage(Unknown Source) ~[?:?]
    at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.doInvokeAdvisedRequestHandler(AbstractReplyProducingMessageHandler.java:127) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:112) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116) ~[spring-integration-core-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    ... 21 more

Caused by: java.io.EOFException: Connection is closed
    at org.springframework.integration.ip.tcp.connection.AbstractConnectionFactory$1.run(AbstractConnectionFactory.java:682) ~[spring-integration-ip-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    ... 3 more

1 个答案:

答案 0 :(得分：2)

  

问题是：我怎么知道谁导致套接字关闭？是否总是引发该异常，因为远程主机关闭了连接？

是。其他应该导致连接重置或读取超时，这就是JRE类本身的行为方式。

但是，错误消息的措辞并不令人鼓舞。 “连接已关闭”可能意味着当您使用已由本地应用程序关闭的连接时，您正在使用的库会错误地抛出EOFException。您需要查看源代码以确定。

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