急!Stream closed 的问题

Question

下载文件时可以正常下载,但TOMCAT的日志中报:
2008-01-10 09:31:38 StandardWrapperValve[jsp]: Servlet.service() for servlet jsp threw exception
java.io.IOException: Stream closed
at org.apache.jasper.runtime.JspWriterImpl.ensureOpen(JspWriterImpl.java:202)
at org.apache.jasper.runtime.JspWriterImpl.clearBuffer(JspWriterImpl.java:157)
错误,请问怎么能不出现这个错误?
下载页面代码如下:
<%@page import="java.util.*"%>
<%@page import="java.io.*"%>
<%@page import="java.net.*"%>
<%
String pathname = request.getParameter("path");
String filename=request.getParameter("filename");
out.print(pathname+filename);response.setContentType("APPLICATION/OCTET-STREAM");
response.setHeader("Content-Disposition","attachment; filename="+filename);FileInputStream fileInputStream =new FileInputStream(pathname+filename);
out.print(pathname+filename);
out.clear();
out.close();
ServletOutputStream myout=response.getOutputStream();
int i;
while ((i=fileInputStream.read()) != -1)
{myout.write(i);}
fileInputStream.close();
myout.close();%>

Answer 1

你要知道
"out"和"response.getOutputStream()" 实际对象虽然不一样，但他们引用的流却是一样的你先close了他 又对他进行write操作在jsp里你不应该close响应流顶多flush去掉所有close()调用

Answer 2

out.close(); 
这个去掉我也试了,结果是一样的

Answer 3

and 
myout.close(); 

Answer 4

这样也不行,报的错误变为:
2008-01-10 12:51:47 StandardWrapperValve[jsp]: Servlet.service() for servlet jsp threw exception
java.lang.IllegalStateException: getOutputStream() has already been called for this response
at org.apache.coyote.tomcat5.CoyoteResponse.getWriter(CoyoteResponse.java:599)
at org.apache.coyote.tomcat5.CoyoteResponseFacade.getWriter(CoyoteResponseFacade.java:163)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:122)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:115)
at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:190)
at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:115)
at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)

Answer 5

请参考这里
http://topic.csdn.net/u/20080110/13/f3f70bd5-66f5-4d3b-8d58-ccebe70adb2c.html

Answer 6

你要下载文件的话，不要再使用out输出内容，你的JSP中也不能包含任何的HTML内容，回车都不行！
<%@page   import="java.util.*"%> 
<%@page   import="java.io.*"%> 
<%@page   import="java.net.*"%> 
<% 
都必须改成<%@page   import="java.util.*"%><%@page
import="java.io.*"%><%@page
import="java.net.*"%><% 
下载文件最好使用Servlet，而不要使用JSP