java.net.SocketException: Socket closed

java.net.SocketException: Socket closed
        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:99)
        at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
        at weblogic.servlet.internal.ChunkUtils.writeChunkTransfer(ChunkUtils.ja
va:279)
        at weblogic.servlet.internal.ChunkUtils.writeChunks(ChunkUtils.java:243)        at weblogic.servlet.internal.ChunkOutput.flush(ChunkOutput.java:311)
        at weblogic.servlet.internal.ChunkOutput.checkForFlush(ChunkOutput.java:
389)
        at weblogic.servlet.internal.ChunkOutput.write(ChunkOutput.java:254)
        at weblogic.servlet.internal.MultibyteOutput.write(ChunkOutput.java:484)        at weblogic.servlet.internal.ChunkOutputWrapper.write(ChunkOutputWrapper
.java:125)
        at weblogic.servlet.internal.ServletOutputStreamImpl.write(ServletOutput
StreamImpl.java:184)
        at java.io.BufferedOutputStream.write(BufferedOutputStream.java:106)
        at sun.nio.cs.StreamEncoder$CharsetSE.writeBytes(StreamEncoder.java:336)        at sun.nio.cs.StreamEncoder$CharsetSE.implWrite(StreamEncoder.java:395)
        at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:136)
        at java.io.OutputStreamWriter.write(OutputStreamWriter.java:191)
        at java.io.BufferedWriter.flushBuffer(BufferedWriter.java:111)
        at java.io.BufferedWriter.write(BufferedWriter.java:206)
        at java.io.Writer.write(Writer.java:126)
        at org.jdom.output.XMLOutputter.printQualifiedName(XMLOutputter.java:157
8)
        at org.jdom.output.XMLOutputter.printElement(XMLOutputter.java:884)
        at org.jdom.output.XMLOutputter.printContentRange(XMLOutputter.java:1007
)
        at org.jdom.output.XMLOutputter.printElement(XMLOutputter.java:927)
        at org.jdom.output.XMLOutputter.printContentRange(XMLOutputter.java:1007
)
        at org.jdom.output.XMLOutputter.printElement(XMLOutputter.java:927)
        at org.jdom.output.XMLOutputter.output(XMLOutputter.java:375)
        at org.jdom.output.XMLOutputter.output(XMLOutputter.java:203)
        at pageFlow.autoComplete.AutoCompleteController.PrintXml(AutoCompleteCon
troller.jpf:280)
        at pageFlow.autoComplete.AutoCompleteController.createAutoCompleteXml(Au
toCompleteController.jpf:197)
        at jrockit.reflect.VirtualNativeMethodInvoker.invoke(Ljava.lang.Object;[
Ljava.lang.Object;)Ljava.lang.Object;(Unknown Source)=========================================================
以上是错误信息，用jdom XMLOutputter往外写数据时报错，请高手指教。