Improve company productivity with a Business Account.Sign Up

x
?
Solved

Servlet Container Exception Handling

Posted on 2011-09-06
3
Medium Priority
?
215 Views
Last Modified: 2012-05-12
Hello,

I have a J2EE application running on Tomcat 7 with log4j implemented.  I wanted to create a custom error page whenever my application encounters an Exception.  I created something similar to ex #1 below in my web.xml, but I was wondering If I can just catch all errors.  I don't think its possible since 500 is java.lang.Throwable and wont get caught if I try to use and exception-type condition (see #2 below).  

ex#1
<error-page>
    <error-code>404</error-code>
    <location>/errors/error.jsp</location>
<error-code>500</error-code>
    <location>/errors/error.jsp</location>
</error-page> 

Open in new window


ex#2
<error-page>
    <exception-type>java.lang.Exception</exception-type>
    <location>/errors/error.jsp</location>  
</error-page> 

Open in new window


0
Comment
Question by:cgray1223
  • 2
3 Comments
 
LVL 47

Accepted Solution

by:
for_yan earned 2000 total points
ID: 36492523


perhpas this solution can help you:
http://www.coderanch.com/t/492765/Servlets/java/Exception-Handling-Servlets


      
posted Saturday, April 24, 2010 2:02:26 AM private message
Quote
If you wrap your MyException in a ServletException declare the ServletException in your web.xml file

Example:



    catch(MyException e)    
    {    
        throw new ServletException(e)  
    }  



web.xml file:


      <error-page>  
       <exception-type>javax.servlet.ServletException</exception-type>  
       <location>/error/error.jsp</location>  
      </error-page>  

also read some stuff below in that link
0
 

Author Comment

by:cgray1223
ID: 36497172
Thanks for the response.  That would work for all exceptions I'm expecting, but not for 404s or runtime exceptions that are not trapped.  I don't think I can trap every error that could ever occur...thoughts?
0
 
LVL 47

Expert Comment

by:for_yan
ID: 36497380
Yes, I think you are right - you cannot trap every error that could ever occurs - there will be alwyas something which you had not anticipated
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
Introduction This article is the first of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article explains our test automation goals. Then rationale is given for the tools we use to a…
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:
The viewer will learn how to implement Singleton Design Pattern in Java.

589 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question