Your problem stems from (A) you can't call response.getOutputStream
after you call response.getWriter and (B) all JSPs call response.getWriter
before they start executing your code. Move the code to a servlet and you
will be fine.
Randy
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Friday, January 25, 2002 11:57 AM
> To: Tomcat Users List
> Subject: Re: BLOB FROM JSP PAGE
>
>
>
> Hi !
>
> your example has inspired me to try to return an ms-excel document as
> binary-result of a JSP.
> I adopted the code previously provided as follows:
>
> <%@page import="java.io.BufferedInputStream,
> java.io.ObjectOutputStream,java.io.OutputStream,java.io.File"%>
> <%
> response.setContentType("application/vnd.ms-excel");
> OutputStream f = response.getOutputStream();
> File excel= new File("c:/temp/<some_excel>.xls");
> BufferedInputStream bis = new BufferedInputStream (new
> FileInputStream(excel));
> int a=0;
> while ( (a=bis.read()) != -1 )
> {
> f.write(a);
> }
> bis.close();
> %>
>
> as a result the Exel file is printed out in text format, and
> the exception
> given below occurs:
>
> What may be the problem here ?
>
> Dirk
>
> ------------------------------------------
>
> java.lang.IllegalStateException: OutputStream is already
> being used for
> this request
> at
> org.apache.tomcat.facade.HttpServletResponseFacade.getWriter(H
ttpServletResponseFacade.java:175)
>
> at
> org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.
> java:166)
> at
> org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterI
mpl.java:158)
> at
> org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:205)
> at _0002fexcel_0002ejspexcel_jsp_6._jspService
> (_0002fexcel_0002ejspexcel_jsp_6.java:84)
> at
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
> at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
> org.apache.jasper.servlet.JspServlet$JspCountedServlet.service
> (JspServlet.java:130)
>
> at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
> org.apache.jasper.servlet.JspServlet$JspServletWrapper.service
> (JspServlet.java:282)
>
> at
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet
> .java:429)
> at
> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
> at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
> org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper
> .java:405)
> at org.apache.tomcat.core.Handler.service(Handler.java:287)
> at
> org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
> at
> org.apache.tomcat.core.ContextManager.internalService(ContextM
anager.java:812)
>
> at
> org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
> at
> org.apache.tomcat.service.http.HttpConnectionHandler.processCo
> nnection(HttpConnectionHandler.java:213)
>
> at
> org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoin
> t.java:416)
> at
> org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPo
> ol.java:501)
> at java.lang.Thread.run(Thread.java:484)
>
>
>
>
>
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