I have a strange problem when trying to catch Exceptions in my filter. I am supposed
to run the chain.doFilter() method and catch any exception thereof and handle them in
the Filter. But even if the Servlets throw a ServletException they are not caught in
the try - catch block i have set up in the filter. However a
StringIndexOutOfBoundsException is caught in that block.
My Filter.doFilter code is below:
public void doFilter(ServletRequest servletRequest,
ServletResponse response, FilterChain chain)
throws IOException, ServletException
{
String targetPage = null;
boolean foundError = false;
try
{
logger.info(">>>>>>>>>>>> Let the servlet run ");
//let the servlet run
chain.doFilter(request, response);
logger.info(">>>>>>>>>>>> In Filter.....This should not be shown ");
}
catch (Exception servex)
{
foundError = true;
logger.info(">>>>>>>>>>>> Caught exception " + servex);
//this is unhandled exception. got to system error page
targetPage = systemErrorPage;
logger.error(servex.getMessage(), servex);
}
}
My servlet doGet() code is simply:
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws IOException, ServletException {
String str = "abc";
//String def = str.substring(5,10);
if(true)
throw new ServletException("ErrorMessage");
}
Any ideas?
Thanks a lot.
Affan
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