java.lang.IllegalStateException

[bill cao <dr...@yahoo.com>]

I am using Apache Tomcat/5.0.28
 
Here is the code of traffic.jsp. it can forward to yyyy.html with no problem, but when forwarding to zzz.html, it throws java.lang.IllegalStateException: getOutputStream() has already been called for this response
 
String serverName = request.getServerName();
if (serverName.toLowerCase().indexOf("xxxx") != -1)
 response.sendRedirect("/xxxx"); 
 
else if (serverName.toLowerCase().indexOf("yyyy") != -1)
 pageContext.forward("yyyy.html");
 
else if (serverName.toLowerCase().indexOf("zzzz") != -1)
 pageContext.forward("zzzz.html");
 
else 
 response.sendError(404);
 
The only difference between yyyy.html and zzzz.html is that one is bigger than the other. /xxxx is also working.
This is very strange!!! Anybody know What is going on?


 		
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