Java下载大文件意外停止

Question

我正在从java spring tomcat应用程序下载一个大文件（500MB到1GB）。

下面下载文件的方法在过去一直很流行，但今天它开始表现怪异。在浏览器（chrome）认为文件完成之前，只有大约第一个20MB-50MB才会被下载。

@RequestMapping(value = "/DownloadPDFSaved/{group}", method = RequestMethod.GET) 
public void downloadGroup(@PathVariable String group, HttpServletResponse response) { 
    if(!StringUtils.hasText(group)) { 
     response.sendError(400, "Group is empty"); 
     return; 
    } 
    InputStream is = new FileInputStream(new File(getPDFZipFilePathForGroup(group))); 
    IOUtils.copy(is, response.getOutputStream()); 
    response.flushBuffer(); 
} 

在Tomcat的日志，我可以看到一个ClientAbortException，但它并没有给人太多有用的信息。

我是否需要设置内容长度？如果是这样，我会将内容长度设置为文件大小吗？你能看到其他任何会导致下载大型zip文件的问题吗？

堆栈跟踪

org.apache.catalina.connector.ClientAbortException: java.net.SocketTimeoutException 
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:389) ~[catalina.jar:8.0.9] 
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:426) ~[tomcat-util.jar:8.0.9] 
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:339) ~[tomcat-util.jar:8.0.9] 
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:414) ~[catalina.jar:8.0.9] 
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:402) ~[catalina.jar:8.0.9] 
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:97) ~[catalina.jar:8.0.9] 
at org.springframework.security.web.context.SaveContextOnUpdateOrErrorResponseWrapper$SaveContextServletOutputStream.write(SaveContextOnUpdateOrErrorResponseWrapper.java:457) ~[SaveContextOnUpdateOrErrorResponseWrapper$SaveContextServletOutputStream.class:3.2.5.RELEASE] 
at org.apache.poi.util.IOUtils.copy(IOUtils.java:135) ~[IOUtils.class:3.11] 
at web.controllers.TrialController.downloadGroup(TrialController.java:281) [TrialController.class:?] 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_11] 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_11] 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_11] 
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_11] 
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) [InvocableHandlerMethod.class:4.1.6.RELEASE] 
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) [InvocableHandlerMethod.class:4.1.6.RELEASE] 
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) [ServletInvocableHandlerMethod.class:4.1.6.RELEASE] 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776) [RequestMappingHandlerAdapter.class:4.1.6.RELEASE] 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705) [RequestMappingHandlerAdapter.class:4.1.6.RELEASE] 
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) [AbstractHandlerMethodAdapter.class:4.1.6.RELEASE] 
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) [DispatcherServlet.class:4.1.6.RELEASE] 
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) [DispatcherServlet.class:4.1.6.RELEASE] 
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) [FrameworkServlet.class:4.1.6.RELEASE] 
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) [FrameworkServlet.class:4.1.6.RELEASE] 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:618) [servlet-api.jar:?] 
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) [FrameworkServlet.class:4.1.6.RELEASE] 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) [servlet-api.jar:?] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) [catalina.jar:8.0.9] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.9] 
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat-websocket.jar:8.0.9] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.9] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.9] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) [FilterSecurityInterceptor.class:3.2.5.RELEASE] 
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) [FilterSecurityInterceptor.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) [ExceptionTranslationFilter.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) [SessionManagementFilter.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) [AnonymousAuthenticationFilter.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) [SecurityContextHolderAwareRequestFilter.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) [RequestCacheAwareFilter.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150) [BasicAuthenticationFilter.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) [AbstractAuthenticationProcessingFilter.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) [LogoutFilter.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) [WebAsyncManagerIntegrationFilter.class:3.2.5.RELEASE] 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [OncePerRequestFilter.class:4.1.6.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) [SecurityContextPersistenceFilter.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [FilterChainProxy$VirtualFilterChain.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) [FilterChainProxy.class:3.2.5.RELEASE] 
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) [FilterChainProxy.class:3.2.5.RELEASE] 
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344) [DelegatingFilterProxy.class:4.1.6.RELEASE] 
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261) [DelegatingFilterProxy.class:4.1.6.RELEASE] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.9] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.9] 
at web.spring_config.CaseInsensitiveRequestFilter.doFilterInternal(CaseInsensitiveRequestFilter.java:23) [CaseInsensitiveRequestFilter.class:?] 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [OncePerRequestFilter.class:4.1.6.RELEASE] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.9] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.9] 
at org.apache.logging.log4j.core.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:66) [Log4jServletFilter.class:2.0-beta9] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.9] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.9] 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) [catalina.jar:8.0.9] 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) [catalina.jar:8.0.9] 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503) [catalina.jar:8.0.9] 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136) [catalina.jar:8.0.9] 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [catalina.jar:8.0.9] 
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) [catalina.jar:8.0.9] 
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:676) [catalina.jar:8.0.9] 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) [catalina.jar:8.0.9] 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:526) [catalina.jar:8.0.9] 
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078) [tomcat-coyote.jar:8.0.9] 
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:655) [tomcat-coyote.jar:8.0.9] 
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222) [tomcat-coyote.jar:8.0.9] 
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566) [tomcat-coyote.jar:8.0.9] 
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523) [tomcat-coyote.jar:8.0.9] 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_11] 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_11] 
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:8.0.9] 
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_11] 
Caused by: java.net.SocketTimeoutException 
at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:134) ~[tomcat-coyote.jar:8.0.9] 
at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:173) ~[tomcat-coyote.jar:8.0.9] 
at org.apache.coyote.http11.InternalNioOutputBuffer.writeToSocket(InternalNioOutputBuffer.java:139) ~[tomcat-coyote.jar:8.0.9] 
at org.apache.coyote.http11.InternalNioOutputBuffer.addToBB(InternalNioOutputBuffer.java:197) ~[tomcat-coyote.jar:8.0.9] 
at org.apache.coyote.http11.InternalNioOutputBuffer.access$000(InternalNioOutputBuffer.java:41) ~[tomcat-coyote.jar:8.0.9] 
at org.apache.coyote.http11.InternalNioOutputBuffer$SocketOutputBuffer.doWrite(InternalNioOutputBuffer.java:320) ~[tomcat-coyote.jar:8.0.9] 
at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:118) ~[tomcat-coyote.jar:8.0.9] 
at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:257) ~[tomcat-coyote.jar:8.0.9] 
at org.apache.coyote.Response.doWrite(Response.java:492) ~[tomcat-coyote.jar:8.0.9] 
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:384) ~[catalina.jar:8.0.9] 
... 86 more 

Answer 1

添加content-length头似乎来解决这个问题。我猜测浏览器正在缩短没有标题的下载，导致了ClientAbortException。

这里是更新和工作代码：

@RequestMapping(value = "/DownloadPDFSaved/{group}", method = RequestMethod.GET) 
public void downloadGroup(@PathVariable String group, HttpServletResponse response) { 
    if(!StringUtils.hasText(group)) { 
     response.sendError(400, "Group is empty"); 
     return; 
    } 

    File zipFile = new File(getPDFZipFilePathForGroup(group)); 
    //set content-length header 
    response.setHeader("Content-Length", Long.toString(zipFile.length()));   
    InputStream is = new FileInputStream(zipFile); 
    IOUtils.copy(is, response.getOutputStream()); 
    response.flushBuffer(); 
}