> Location: /servlet/MyServlet Internal Servlet > Error:java.lang.ArrayIndexOutOfBoundsException: 10 > at MyServlet.doPost(MyServlet.java:157) This isn't a Tomcat issue: _your_ code is throwing an ArrayOutOfBoundsException, at line 157. Moreover, the code you posted doesn't look like it'd throw such an exception; line 157 must be a line you didn't post. -- Bill K. -----Original Message----- From: Barry Draper [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 07, 2001 12:55 PM To: [EMAIL PROTECTED] Subject: Problem: Using Tomcat 3.2.1 on NT 4.0 SP5, get Internal Servlet E rror on writing POST response approx. > 800kb in length Using Tomcat 3.2.1 on NT 4.0 SP 5, I have a servlet which sends XML-encoded strings in response to POST requests. When the XML -encoded response is approximately > 800 bytes in length (my test case is 889 bytes - I don't know the exact threshold yet), I get the following error: Error: 500 Location: /servlet/MyServlet Internal Servlet Error:java.lang.ArrayIndexOutOfBoundsException: 10 at MyServlet.doPost(MyServlet.java:157) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404) at org.apache.tomcat.core.Handler.service(Handler.java:286) at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372) at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79 7) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743) at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC onnectionHandler.java:210) at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498) at java.lang.Thread.run(Thread.java:479) I tried increasing the ServletResponse buffer size to 64kb (the default is 8kb) and also setting content length as follows: public void doPost( HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ... response.setContentType("text/plain"); response.setBufferSize(64 * 1024); PrintWriter out = response.getWriter(); ... String result = null; // do processing which sets result string int len = result.length(); response.setContentLength(len); ... out.println(result); I verified that the response buffer size was increased to 64kb and the content length was set correctly. Still, I get the error on writing the response. Is this a known problem with a fix? Am I doing something wrong? Please advise. Thanks. Barry Draper [EMAIL PROTECTED]