解决Java中的java.io.IOException：Brokenpipe问题
Java 中java.io.IOException: Broken pipe
认识broken pipe
pipe是管道的意思，管道⾥⾯是数据流，通常是从⽂件或⽹络套接字读取的数据。
当该管道从另⼀端突然关闭时，会发⽣数据突然中断，即是broken。
对于⽂件File来说，这可能是⽂件安装在已断开连接的光盘或远程⽹络上。
对于socket来说，可能是⽹络被拔出或另⼀端的进程崩溃。
在Java中，没有具体的BrokenPipeException。
将此类错误包含在另⼀个异常，例如java.io.IOException:Broken pipe
解决问题
其实当该异常产⽣的时候，对于服务端来说，并没有多少影响。因为可能是某个客户端突然中⽌了进程导致了该错误。但是为了程序能够美观、优雅，还是要在合适的地⽅捕获该异常，并处理⼀下。
还有⼀种可能性就是程序⾥⾯有代码执⾏时间过长，⽤户等待时间过久，才会强⾏中⽌进程。
那么这种情况下就需要去分析log中报异常的地⽅是经常发⽣在什么地⽅，合理优化该段代码，提升代码的运⾏速度，才能从根本上避免此类问题的再次发⽣。
可能原因：
1、客户端请求服务器数据，服务器突然挂了；
2、客户端请求服务端数据，服务端正常返回，凡是客户端由于超时等原因断开。
原因分析：
做了压⼒测试，发现遇到的情况属于第⼆种，由于去数据库取数据的时候，30秒⾥⽆法正常获取有效的数据库连接，或者查询时间长，导致OSB过来的请求超时，也就是客户端超时了，服务端还试图返
回数据，结果导致如题异常。
解决⽅法：
1、增⼤数据库连接池数量；
2、延长客户端超时时间。
java.io.IOException: Broken pipe 线上问题记录
今天在上线前staging环境验证时遇到这样⼀个问题java.io.IOException: Broken pipe，操作服务刚起来之后，测试⼈员第⼀次进⾏更配[post]操作，结果操作失败，但是第⼆次就好了，
我们是springboot+angularJs前后端分离，然后服务使⽤k8s在容器中部署，原始的异常栈信息是这样，
2019-09-26T02:42:09Z [http-nio-8080-exec-9] WARN  [org.springframework.web.hod.annotation.ExceptionHandlerExceptionResolver:411] - Failed to invoke @ExceptionHandler method: public org.springframework.http.ResponseEntity<com.in
spu org.tor.ClientAbortException: java.io.IOException: Broken pipe
at org.tor.OutputBuffer.doFlush(OutputBuffer.java:321)
at org.tor.OutputBuffer.flush(OutputBuffer.java:284)
at org.tor.CoyoteOutputStream.flush(CoyoteOutputStream.java:118)
at org.springframework.security.web.util.OnCommittedResponseWrapper$SaveContextServletOutputStream.flush(OnCommittedResponseWrapper.java:514)
at com.json.UTF8JsonGenerator.flush(UTF8JsonGenerator.java:1100)
at com.fasterxml.jackson.databind.ObjectWriter.writeValue(ObjectWriter.java:915)
at org.verter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:285)
at org.verter.AbstractGenericHttpMessageConverter.write(AbstractGenericHttpMessageConverter.java:102)
at org.springframework.web.hod.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:272)
at org.springframework.web.hod.annotation.HttpEntityMethodProcessor.handleReturnValue(HttpEntityMethodProcessor.java:224)
at org.hod.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:82)
at org.springframework.web.hod.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:119)
at org.springframework.web.hod.annotation.ExceptionHandlerExceptionResolver.doResolveHandlerMethodException(ExceptionHandlerExceptionResolver.java:400)
at org.springframework.web.servlet.handler.AbstractHandlerMethodExceptionResolver.doResolveException(AbstractHandlerMethodExceptionResolver.java:61)
at org.springframework.web.servlet.solveException(AbstractHandlerExceptionResolver.java:136)
at org.springframework.web.servlet.solveException(HandlerExceptionResolverComposite.java:78)
at org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1255)
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1062)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1008)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at at.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.inspurmon.filter.RepeatedlyReadFilter.doFilter(RepeatedlyReadFilter.java:34)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.fig.filter.KeyClockAuthFilter.doFilter(KeyClockAuthFilter.java:53)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.ace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:90)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.inspur.iam.adapter.filter.SecurityContextFilter.doFilter(SecurityContextFilter.java:119)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.keycloak.adapters.springsecurity.filter.KeycloakAuthenticatedActionsFilter.doFilter(KeycloakAuthenticatedActionsFilter.java:74)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.keycloak.adapters.springsecurity.filter.KeycloakSecurityContextRequestFilter.doFilter(KeycloakSecurityContextRequestFilter.java:77)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.keycloak.adapters.springsecurity.filter.KeycloakAuthenticationProcessingFilter.successfulAuthentication(KeycloakAuthenticationProcessingFilter.java:208)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:240)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.keycloak.adapters.springsecurity.filter.KeycloakPreAuthActionsFilter.doFilter(KeycloakPreAuthActionsFilter.java:84)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:66)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.t.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.t.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.ics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:155)
at org.springframework.ics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:123)
at org.springframework.ics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:108)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
spring framework面试题at org.StandardContextValve.invoke(StandardContextValve.java:96)
at org.at.AbstractAuthenticatedActionsValve.invoke(AbstractAuthenticatedActionsValve.java:67)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
at org.at.AbstractKeycloakAuthenticatorValve.invoke(AbstractKeycloakAuthenticatorValve.java:181)
at org.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.tor.CoyoteAdapter.service(CoyoteAdapter.java:342)
at http11.Http11Processor.service(Http11Processor.java:800)
at AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
at at.util.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
at at.util.SocketProcessorBase.run(SocketProcessorBase.java:49)
at urrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at urrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at at.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Broken pipe
at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
at sun.nio.ch.IOUtil.write(IOUtil.java:65)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
at at.util.NioChannel.write(NioChannel.java:134)
at at.util.NioBlockingSelector.write(NioBlockingSelector.java:101)
at at.util.NioSelectorPool.write(NioSelectorPool.java:157)
at at.util.NioEndpoint$NioSocketWrapper.doWrite(NioEndpoint.java:1306)
at at.util.SocketWrapperBase.doWrite(SocketWrapperBase.java:726)
at at.util.SocketWrapperBase.flushBlocking(SocketWrapperBase.java:679)
at at.util.SocketWrapperBase.flush(SocketWrapperBase.java:669)
at http11.Http11OutputBuffer$SocketOutputBuffer.flush(Http11OutputBuffer.java:646)
at http11.filters.ChunkedOutputFilter.flush(ChunkedOutputFilter.java:169)
at http11.Http11OutputBuffer.flush(Http11OutputBuffer.java:252)
at http11.Http11Processor.flush(Http11Processor.java:1561)
at AbstractProcessor.action(AbstractProcessor.java:380)
at Response.action(Response.java:173)
at org.tor.OutputBuffer.doFlush(OutputBuffer.java:317)
... 127 more
resolve exception
之后的操作，就正常了，正常⽇志如下：
google之后⼤概知道是什么问题了
注：读懂下⾯这句话，⾸先要熟悉TCP 四次挥⼿，不太熟悉请右转google
总结 Broken Pipe：
这个异常是客户端读取超时关闭了连接，这时候服务器端再向客户端已经断开的连接写数据时就发⽣了broken pipe异常！
作为⼀个后端⼯程师，⼀定要对⽇常的⼀些异常有⼀个积累总结，笔者就⾃⼰有在总结，⼀是总结整理之后，下次遇到同样的问题⾃⼰不会很茫然不知所措，尤其是在上线是，其他同事都在等着你解决问题的时候，你吭吭唧唧那就不太好了，⼆是笔者之前在⾯试时也有经常被问到类似的问题，记忆尤新的就是被云校的百度⼩哥问到connection by peer，之前博客也有介绍，作为社招有经验的⼯程师，更不能再
以校招的⾯试作为⾃⼰的标准了，要有⾃⼰的经验积累，反正就是，⼲，就完了
最后，附⼀张我的错误记事本截图
以上为个⼈经验，希望能给⼤家⼀个参考，也希望⼤家多多⽀持。

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