tomcat开发过程中遇到ArrayIndexOutOfBoundsException

现在做一个反馈页面,反馈内容采用<texrarea>接收输入,采用form 表单post方式提交,当反馈内容长到一定程度的时候,点提交按钮后,后台报如下错误,请帮忙分析是何缘故,谢谢了!
ps:使用的tomcat版本是6.0.32
2011-9-13 10:47:18 org.apache.catalina.connector.CoyoteAdapter service
严重: An exception or error occurred in the container during the request processing
java.lang.ArrayIndexOutOfBoundsException: 8192
	at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:734)
	at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:641)
	at org.apache.coyote.http11.InternalOutputBuffer.sendHeader(InternalOutputBuffer.java:514)
	at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1639)
	at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:956)
	at org.apache.coyote.Response.action(Response.java:183)
	at org.apache.coyote.Response.sendHeaders(Response.java:379)
	at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:305)
	at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:273)
	at org.apache.catalina.connector.Response.finishResponse(Response.java:493)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:322)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)
2011-9-13 10:47:18 org.apache.coyote.http11.Http11Processor process
严重: Error finishing response
java.lang.ArrayIndexOutOfBoundsException
	at java.lang.System.arraycopy(Native Method)
	at org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:703)
	at org.apache.coyote.http11.InternalOutputBuffer.sendStatus(InternalOutputBuffer.java:438)
	at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1626)
	at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:956)
	at org.apache.coyote.Response.action(Response.java:181)
	at org.apache.coyote.http11.InternalOutputBuffer.endRequest(InternalOutputBuffer.java:398)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:901)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)

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