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(HttpServletResponseFacade.java:175)
at
org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:166)
at
org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.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(ContextManager.java:812)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
at java.lang.Thread.run(Thread.java:484)
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