Jakarta Struts Cookbook

9.2. Custom Processing for Declared Exceptions

Problem

Your application requires specialized handling for certain types of exceptions.

Solution

Extend the Struts ExceptionHandler with your own class such as the one shown in Example 9-4.

Example 9-4. Extending the Struts exception handler

package com.oreilly.strutsckbk.ch09; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.action.ActionMessage; import org.apache.struts.action.ExceptionHandler; import org.apache.struts.config.ExceptionConfig; public class CustomExceptionHandler extends ExceptionHandler { public ActionForward execute(Exception ex, ExceptionConfig ae, ActionMapping mapping, ActionForm formInstance, HttpServletRequest request, HttpServletResponse response) throws ServletException { // TODO Add custom code here to completely control handling return super.execute(ex, ae, mapping, formInstance, request, response); } protected void logException(Exception e) { // TODO Add custom code here for exception logging System.out.println("Customized logException for:"+e); super.logException(e); } protected void storeException(HttpServletRequest request, String property, ActionMessage error, ActionForward forward, String scope) { // TODO Add custom code here for storing errors System.out.println("Customized ...