Question

我正在使用struts2导出excel文件。较小的文件工作正常。我用更大的文件得到以下错误。为什么我收到此错误？文件的大小是否太大？

2012-12-01 09:51:29.689::WARN:  Committed before 500 Unable to show problem report: java.lang.IllegalStateException: STREAM
2012-12-01 09:51:29.690::WARN:  /strutsDemo/process/excel: 
java.lang.IllegalStateException: Committed
    at org.mortbay.jetty.Response.resetBuffer(Response.java:853)
    at org.mortbay.jetty.Response.reset(Response.java:832)
    at org.mortbay.jetty.Response.sendError(Response.java:220)
    at org.apache.struts2.dispatcher.Dispatcher.sendError(Dispatcher.java:801)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:519)
    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1041)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:354)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:226)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:627)
    at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:149)
    at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:123)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:141)
    at org.mortbay.jetty.Server.handle(Server.java:269)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:430)
    at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:687)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:492)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:199)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:339)
    at org.mortbay.jetty.nio.HttpChannelEndPoint.run(HttpChannelEndPoint.java:270)
    at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475)
2012-12-01 09:51:29.691::WARN:  /strutsDemo/file/export
java.lang.IllegalStateException: Committed
    at org.mortbay.jetty.Response.resetBuffer(Response.java:853)
    at org.mortbay.jetty.Response.reset(Response.java:832)
    at org.mortbay.jetty.Response.sendError(Response.java:220)
    at org.apache.struts2.dispatcher.Dispatcher.sendError(Dispatcher.java:801)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:519)
    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1041)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:354)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:226)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:627)
    at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:149)
    at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:123)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:141)
    at org.mortbay.jetty.Server.handle(Server.java:269)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:430)
    at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:687)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:492)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:199)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:339)
    at org.mortbay.jetty.nio.HttpChannelEndPoint.run(HttpChannelEndPoint.java:270)
    at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475)

这是我的动作配置：

  <result name="success" type="stream">
    <param name="contentType">application/vnd.ms-excel</param>
    <param name="inputName">excelStream</param>
    <param name="contentDisposition">attachment;fileName="${fileName}"</param>
    <param name="bufferSize">2048</param>
  </result>
  <result name="invalid.token">/error.jsp</result>
</action>

Answer 1

看起来你的代码开始编写Excel文件（回到客户端），中途得到了，并遇到了某种错误。到那时为时已晚，无法返回并提供500 HTTP错误响应代码。您的问题中不包含错误的详细信息。（可能是客户端挂起，响应被提交两次，应用程序代码抛出的异常等）如果您调试应用程序并中断任何异常抛出，您会找到任何内容吗？

您还可以尝试更大的缓冲区大小来查看会发生什么。（4k，16k，更多？）这告诉系统在开始将其渲染回客户端之前更长时间地保持流。因此，您的实际问题可能会浮出水面。

在500之前提交，java.lang.IllegalStateException：已提交

1 个答案: