excel已生成，但读取excel返回给客户端的时候，就不行了，数据量小还是可以的，数据量一大60000就不可以啦
ClientAbortException: java.net.SocketException: Connection reset by peer: socket write error
at org.apache.coyote.tomcat5.OutputBuffer.realWriteBytes(OutputBuffer.java:373)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:398)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:318)
at org.apache.coyote.tomcat5.OutputBuffer.writeBytes(OutputBuffer.java:401)
at org.apache.coyote.tomcat5.OutputBuffer.write(OutputBuffer.java:388)
at org.apache.coyote.tomcat5.CoyoteOutputStream.write(CoyoteOutputStream.java:76)
at java.io.BufferedOutputStream.write(BufferedOutputStream.java:121)
at DP.ploy.Bean.PloyBean.readToExcel(PloyBean.java:171)
at DP.ploy.Bean.PloyBean.writeExcel(PloyBean.java:140)
at org.apache.jsp.ploy.PloyDowloadList_jsp._jspService(PloyDowloadList_jsp.java:72)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:568)
------解决方案--------------------
可以不用流,直接生成一个excel后,用window.open("xxx.xls");这样试试啊.