Re: java.lang.IllegalStateException - code included.....

[RS...@TRANSENTRIC.COM]

Thought if I include the code it might help a little:

Piece of code in the calling servlet:
         ..............
         ..............
         in = new BufferedReader(new InputStreamReader(uconn.getInputStream
()));
         resp.setContentType("text/html");
         System.err.println("About to read and output content using
PrintStream....");
         String line;
         PrintStream pw = new PrintStream(resp.getOutputStream(), true);
         while((line = in.readLine()) != null)
         {
            pw.println(line);
            pw.flush();
            System.err.println("Flushed data back....");
         }
         pw.flush();
         in.close();
         ..............
         ..............

where,
uconn is the URLConnection to the called servlet.

Maybe I should buffer the output before I send it across to the browser.

Still waiting :-)
Thanks.





(Embedded image moved to file: pic04041.pcx)
Roshan A. Sequeira
(Embedded image moved to file: pic03602.pcx)
12/13/2001 11:57 AM

To:   "Tomcat Users List" <to...@jakarta.apache.org>
cc:

Subject:  java.lang.IllegalStateException


I'm calling a servlet from within another servlet using the URL class. The
      calling servlet posts data, reads the output, and then passes on the
      output to the browser. In JRun everything works fine. But on Tomcat
      the same throws a java.lang.IllegalStateException

Error:
java.lang.IllegalStateException: Writer is already being used for this
request
        at
org.apache.tomcat.facade.HttpServletResponseFacade.getOutputStream(HttpServletResponseFacade.java:158)

I'm using a PrintWriter (which I get from the response object) in the
called servlet. And I've a finally block which closes the stream. Also
assign the object to null.

The calling servlet which behaves like a proxy has a PrintStream (which it
gets from it's response object). This object is used to write the output
(that it reads from the called servlet) to the browser.

I know I'm missing something fundamental here. But can't seem to figure it
out. Is Tomcat getting mixed up with two  Outputstreams/Writers? Any
ideas/comments?

Thanks.
RS