Bonjour,
getOutputStream() can be done only once.
I guess the first servlet you are invoking is doing it.
Then you forward to a jsp which try to do it again
If it forwards to a jsp, the initial servelt don't have to send something on
the stream, thus don't have to call getOutputStream() .
Bonne journée,
Nicolas Silber*zahn
Digital Airways
Everywhere <Internet>Technologies</Internet>
<100% Java, Mobile, Offline aware>Wapaka Browser</100% Java, Mobile, Offline
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>-----Message d'origine-----
>De : KC Berg [mailto:[EMAIL PROTECTED]]
>Envoyé : mardi 26 février 2002 22:02
>À : 'Tomcat Users List'
>Objet : RE: IlligalStateException -- getOutputStream() has already been
>called for this response.
>
>
>How are you doing the includes? Also when you are using a forward in a
>servlet you can not print anything to the output buffer before you use the
>forward. Because once the output stream has been sent to the browser the
>server can no longer forward that stream to another servlet.
>
>KC
>
>-----Original Message-----
>From: Dmitry Nikelshpur [mailto:[EMAIL PROTECTED]]
>Sent: Tuesday, February 26, 2002 12:40 PM
>To: [EMAIL PROTECTED]
>Subject: IlligalStateException -- getOutputStream() has already been
>called for this response.
>
>
>Hello everyone.
>
>I had posted a similar message before, but either did not get replies or
>missed them.
>
>I am using a JavaBean in a JSP page. This bean draws charts and graphs
>depending on supplied data...
>
>When I call the JSP page directly from the browser, the graph displays
>properly, and no error messages are dumped to catalina.out.
>
>When I have a servlet forward to the JSP page, the graphs display
>properly, but I get a message in catalina.out:
>java.lang.IlligalStateException: getOutputStream() has already been
>called for this response.
>
>When I have a servlet include the JSP page, I get garbage in the
>browser, and the same message in catalina.out,
>java.lang.IlligalStateException: getOutputStream() has already been
>called for this response.
>
>I had seen posts regarding this error, and believe that I saw something
>in the bug databasee, but still no solution.
>Is this behavior 'normal?' for JSPs / Servlets?
>
>The bean that I am using to create the charts is called jspChart, and is
>at: http://www.javaside.com/u_jspchart.html
>This URL contains a sample JSP page, so any servlet that includes /
>forwards this page should produce above results.
>
>I would apprecieate it if you could BCC me in your replies, to make sure
>I get the message.
>Also, if you have any other solutions for creating charts/graphs
>dynamically, with the ability to include/forweard from servlets, I'll be
>more than pleased...
>
>Thanks in advance!
>
>
>Dmitry
>
>
>
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