紧急求助！tomcat下java.io.IOException: reading encoded JPEG Stream 问题

[你们都是坏人]

在tomcat下的项目，每个页面都有测试，能正常运行。
放服务器上，也没有问题，
访问量不大，不同时间段，每天也就是百八十个人在线访问。

运行1、2天没有问题，3、4天后页面打开就慢了。
查询log 档，
stdout_…….log 下有以下问题

java.io.IOException: reading encoded JPEG Stream 
	at sun.awt.image.codec.JPEGImageEncoderImpl.writeJPEGStream(Native Method)
	at sun.awt.image.codec.JPEGImageEncoderImpl.encode(Unknown Source)
	at sun.awt.image.codec.JPEGImageEncoderImpl.encode(Unknown Source)
	at sun.awt.image.codec.JPEGImageEncoderImpl.encode(Unknown Source)
	at com.mask.util.barcode.BarCodeServlet.doGet(BarCodeServlet.java:205)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:270)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:191)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:227)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:211)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:817)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:623)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:444)
	at java.lang.Thread.run(Unknown Source)

请问 怎样才能找出是那个页面 报这个错误？？

localhost.…….log 下有以下问题

严重的: Servlet.service() for servlet jsp threw exception

java.io.IOException: Error: Attempt to clear a buffer that's already been flushed
	at org.apache.jasper.runtime.JspWriterImpl.clear(JspWriterImpl.java:150)
	at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:674)
	at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:665)
	at org.apache.jsp.system.DeliveryPacking.Pack.Delivery_jsp._jspService(Delivery_jsp.java:172)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Unknown Source)

[你们都是坏人]

求助，找出那个页面的问题!!

[brightyq]

out.flush();
..........
out.clear();


JSP有这样的语句吗？
flush的数据已经发往客户端，不允许撤回，不能clear

[brightyq]

http://www.myexception.cn/java-web/320663.html

[KAKUKYOWU]

[Quote=引用 2 楼 的回复:]

out.flush();
..........
out.clear();


JSP有这样的语句吗？
flush的数据已经发往客户端，不允许撤回，不能clear
[/Quote]

应该是这个原因。已经刷新了，不能再clear了。

[你们都是坏人]

有一段


OutputStream os = response.getOutputStream();
……
ImageIO.write(image,"JPEG",os);
os.flush();
os.close();
response.flushBuffer();
out.clear();
out = pageContext.pushBody();