Why do I get java.lang.illegalStateException?
Thase Are The Most Common REASONS How You Can Get An
Java.lang.illegalStateException:
Calling setBuffersize and content Has been Written. The Response Has Been Committed and you do any of the folload:
Calling ServletResponse.reset () or ServletResponse.resetBuffer () Calling either HttpServletResponse.sendError () or HttpServletResponse.sendRedirect () Calling RequestDispatcher.forward () which includes performing a jsp:. Forward Calling RequestDispatcher.forward () which includes performing a jsp : Forward Remember That if You Call
Forward () or
Sendredirect (), Any Following Lines of Code Will STILL EXECUTE. For Example:
{
...
Response.sendRedirect ("foo.jsp");
// at this Point, you shouth ketbably has return statement Otherwise
// the folowing code will
System.out.println ("After Redirect! By The Way ...");
System.out.println ("Use Commons-Logging or Log4j, Not System.out");
System.out.println ("System.out Is A Bad Practice!");
Response.sendRedirect ("bar.jsp"); / * this will throw an error! * /
}
