大量ClientAbortException（或许是SpringMvc导致）异常问题的解决方案

小灰灰 2021-05-27 20:38 2425阅读 0赞

原因是由于处理http连接时，正在输出内容时，用户关闭了浏览器，会出现一个"ClientAbortException"，属于I/O处理中出现的一个异常，应用服务器应该会捕捉

# 1、SpringMvc增加全局异常处理捕获 #

## 问题描述 ##

Java web系统，每次都会莫名其妙的显示一些org.apache.catalina.connector.ClientAbortException的异常。  
网上关于这个问题原因的解释：

1.  浏览器关闭了连接，导致数据写入的时候无法写入，然后报客户端打断异常。

解决方案分为几种：

1.  浏览器端去解决，提高和后端连接的时间；
2.  tomcat去做配置；
3.  nignx去修改。

但是在有基本规模的公司，前后端分离并且已经有一套成熟的底层服务，后端开发人员很少能去修改Tomcat、nignx等服务，只能控制后端代码。所以准备从Java角度解决问题。

## 解决方案 ##

## 核心方案 ##

增加全局异常拦截，并且判断异常名称，如果每次为 org.apache.catalina.connector.ClientAbortException，则返回null。

if ("org.apache.catalina.connector.ClientAbortException".equals(ex.getClass().getName())) {
                log.error("发生clientAbortException");
                return null;
    }

## 使用ResponseEntityExceptionHandler作为全局拦截方案 ##

@ControllerAdvice
    @Slf4j
    public class RestResponseEntityExceptionHandler extends ResponseEntityExceptionHandler {
    
        @ExceptionHandler(Exception.class)
        protected ResponseEntity<String> handleExceptions(Exception ex, WebRequest request) {
            if ("org.apache.catalina.connector.ClientAbortException".equals(ex.getClass().getName())) {
                log.error("发生clientAbortException");
                return null;
            }
            HttpHeaders httpHeaders = new HttpHeaders();
            httpHeaders.set("Content-Type", "application/json;charset=UTF-8");
            return new ResponseEntity<String>(
                    "{\"code\":500,\"data\":null,\"msg\":\"服务器闹脾气，请稍后再试\"}", httpHeaders, HttpStatus.OK);
        }
    
    }

> @Slf4j是lombok提供的注解，如果你没有使用过，可以自己创建日志。

## 错误详情 ##

org.apache.catalina.connector.ClientAbortException: java.io.IOException: Broken pipe
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:393)
    at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:426)
    at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:342)
    at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:317)
    at org.apache.catalina.connector.CoyoteOutputStream.flush(CoyoteOutputStream.java:110)
    at com.fasterxml.jackson.core.json.UTF8JsonGenerator.flush(UTF8JsonGenerator.java:1100)
    at com.fasterxml.jackson.databind.ObjectWriter.writeValue(ObjectWriter.java:915)
    at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:286)
    at org.springframework.http.converter.AbstractGenericHttpMessageConverter.write(AbstractGenericHttpMessageConverter.java:106)
    at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:231)
    at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:174)
    at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:81)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:113)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:347)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:263)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:521)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1096)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:674)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$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: 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 org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:124)
    at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
    at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:172)
    at org.apache.coyote.http11.InternalNioOutputBuffer.writeToSocket(InternalNioOutputBuffer.java:139)
    at org.apache.coyote.http11.InternalNioOutputBuffer.addToBB(InternalNioOutputBuffer.java:197)
    at org.apache.coyote.http11.InternalNioOutputBuffer.access$000(InternalNioOutputBuffer.java:41)
    at org.apache.coyote.http11.InternalNioOutputBuffer$SocketOutputBuffer.doWrite(InternalNioOutputBuffer.java:320)
    at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:93)
    at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:256)
    at org.apache.coyote.Response.doWrite(Response.java:501)
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:388)

# 2、Nginx解决方案 #

最近发现服务器上出现很多499的错误，出现499错误的原因是客户端关闭了连接，在我这篇文章：服务端在执行时中途关闭浏览器退出之后php还会继续执行吗？个人实践实验得到结果(http://www.04007.cn/article/356.html )里，测试中断时，服务器nginx的日志就是499记录。nginx报49\*错误

400-499 用于指出客户端的错误。 （自己电脑这边的问题） 自己电脑这边的问题）

495 ：https certificate error  
496 ：https no certificate  
497 ：http to https  
498 ：canceled  
499 ：client has closed connection  
    即499错误是客户端主动断开了连接。 如何关闭报499这个错误码呢？可以通过配置：**proxy\_ignore\_client\_abort**来处理。  
    proxy\_ignore\_client\_abort：是否开启proxy忽略客户端中断。即如果此项设置为on开启，则服务器会忽略客户端中断，一直等着代理服务执行返回。并且如果执行没有发生错误，记录的日志是200日志。如果超时则会记录504。如果设置为off，则客户端中断后服务器端nginx立即记录499日志，但要注意，此时代理端的PHP程序会依然继续执行。可查看上面写的那篇文章。  
    nginx的proxy\_ignore\_client\_abort默认是关闭的，即请求过程中如果客户端端主动关闭请求或者客户端网络断掉，那么Nginx会记录499。所以如果不想看到499报错，可以修改配置：  
proxy\_ignore\_client\_abort on ;  
    这样来说，499错误并不是一个问题，如果出现了大量的499的话，需要考虑为什么发生了这么多的客户端中断的问题。

另外需要注意的一项是：proxy\_ignore\_client\_abort配置只会对代理的配置，如果请求的是当前nginx服务器，直接执行PHP程序返回。则设置proxy\_ignore\_client\_abort为on也不会起作用，仍会是记录499日志。proxy\_ignore\_client\_abort的配置是配置在代理处理时用。如下：

location =/b.php { 
        proxy_ignore_client_abort   on; 
        proxy_pass  http://service_backends;}

# 3、增加单独Filter 在外捕获异常 或重写DispatcherServlet 不抛出该异常 #

异常抛出点 **.DispatcherServlet.doDispatch(DispatcherServlet.java:967)**

根本原因 ：类 **ServletInvocableHandlerMethod，**处理returnvalue 返回值时，客户端提前关闭 流，因为输出流已经关闭，所以会有走这里，抛出ClientAbortException异常

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过滤器很简单，放在执行的servlet之前，try catch即可

public class ClientAbortFixFilter implements Filter{
        private static final Logger logger = LoggerFactory.getLogger(ClientAbortFixFilter.class);
        @Override
        public void init(FilterConfig filterConfig) throws ServletException {
    
        }
    
        @Override
        public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
            try {
                chain.doFilter(request,response);
            } catch (IOException e) {
                logger.warn("IoException!", e);
            }
        }
    
        @Override
        public void destroy() {
    
        }
    }

[https_stackoverflow.com_questions_43825908_org-apache-catalina-connector-clientabortexception-java-io-ioexception-apr-err]: 
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