Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Servlet Container Exception Handling

Posted on 2011-09-06
3
Medium Priority
?
204 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 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

The top UI technologies you need to be aware of

An important part of the job as a front-end developer is to stay up to date and in contact with new tools, trends and workflows. That’s why you cannot miss this upcoming webinar to explore the latest trends in UI technologies!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

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…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
Suggested Courses

721 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