项目中用到从数据库中读取文件流时，出现如下异常，请问是怎么回事？

yang513028795 2010-02-24 05:05:29

服务器是websphere，在一个jsp页面中显示数据库中存放在图片时（图片是以流的方式存储到DB2的Blog字段中的），报如下异常：
com.ibm.wsspi.webcontainer.ClosedConnectionException: OutputStream encountered error during write
at com.ibm.ws.webcontainer.channel.WCCByteBufferOutputStream.write(WCCByteBufferOutputStream.java:112)
at com.ibm.ws.webcontainer.srt.SRTOutputStream.write(SRTOutputStream.java:96)
at com.ibm.wsspi.webcontainer.util.BufferedServletOutputStream.writeOut(BufferedServletOutputStream.java:467)
at com.ibm.wsspi.webcontainer.util.BufferedServletOutputStream.write(BufferedServletOutputStream.java:305)
at com.sc.system.tools.SysTools.streamCopy(SysTools.java:45)
at com.ibm._jsp._showpic._jspService(_showpic.java:153)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:87)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1068)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1009)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
at com.sc.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:39)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:771)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:679)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:539)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:122)
at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:225)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3365)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:267)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:814)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1455)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:115)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:454)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:383)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:279)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.error(NewConnectionInitialReadCallback.java:162)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:208)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture$1.run(AsyncChannelFuture.java:205)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1473)
Caused by: java.io.IOException: Async IO operation failed, reason: RC: 32 Broken pipe
at com.ibm.io.async.AbstractAsyncChannel.multiIO(AbstractAsyncChannel.java:474)
at com.ibm.io.async.AsyncSocketChannelHelper.write(AsyncSocketChannelHelper.java:478)
at com.ibm.io.async.AsyncSocketChannelHelper.write(AsyncSocketChannelHelper.java:396)
at com.ibm.ws.tcp.channel.impl.AioSocketIOChannel.writeAIO(AioSocketIOChannel.java:281)
at com.ibm.ws.tcp.channel.impl.AioTCPWriteRequestContextImpl.processAsyncWriteRequest(AioTCPWriteRequestContextImpl.java:49)
at com.ibm.ws.tcp.channel.impl.TCPWriteRequestContextImpl.writeInternal(TCPWriteRequestContextImpl.java:166)
at com.ibm.ws.tcp.channel.impl.TCPWriteRequestContextImpl.write(TCPWriteRequestContextImpl.java:137)
at com.ibm.ws.http.channel.impl.HttpServiceContextImpl.asynchWrite(HttpServiceContextImpl.java:2379)
at com.ibm.ws.http.channel.impl.HttpServiceContextImpl.sendOutgoing(HttpServiceContextImpl.java:2168)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundServiceContextImpl.sendResponseBody(HttpInboundServiceContextImpl.java:778)
at com.ibm.ws.webcontainer.channel.WCChannelLink.writeBufferAsynch(WCChannelLink.java:312)
at com.ibm.ws.webcontainer.channel.WCChannelLink.writeBufferResponse(WCChannelLink.java:292)
at com.ibm.ws.webcontainer.channel.WCChannelLink.writeBuffer(WCChannelLink.java:246)
at com.ibm.ws.webcontainer.channel.WCCByteBufferOutputStream.flushWriteBuffer(WCCByteBufferOutputStream.java:406)
at com.ibm.ws.webcontainer.channel.WCCByteBufferOutputStream.checkWriteArray(WCCByteBufferOutputStream.java:376)
at com.ibm.ws.webcontainer.channel.WCCByteBufferOutputStream.write(WCCByteBufferOutputStream.java:117)
... 34 more

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