Managed Bean can't catch checked exception

Matt Raible Mon, 29 Nov 2004 08:01:00 -0800

I'm experiencing a strange issue. I am calling a Spring-managed bean from my managed-bean and for some reason, the bean won't catch a checked exception. Here's the method that throws the exception:

   public void saveUser(User user) throws UserExistsException {
       try {
           dao.saveUser(user);
       } catch (DataIntegrityViolationException e) {
           throw new UserExistsException("User '" + user.getUsername() +
                                         "' already exists!");
       }
   }

In my bean I have:

       try {
           userManager.saveUser(user);
       } catch (UserExistsException ue) {
           log.warn(ue.getMessage());

// for some reason - MyFaces doesn't seem to catch this exception } catch (DataIntegrityViolationException e) { log.warn(e.getMessage()); addError("errors.existing.user", new Object[] { user.getUsername(), user.getEmail() });

           return "editProfile";
       }

Is there some sort of rule that says "only catch Runtime Exceptions"? Also, is there anything in MyFaces/JSF for exception handling? Spring/Struts/WebWork all allow me to configure a specific page to go to when a particular exception is thrown. I'd rather not do it in web.xml since I tend to use that for more generic exceptions. Here's how I do it with Struts:

1.  struts-config.xml:

<global-exceptions> <exception key="error.required" type="org.springframework.dao.DataAccessException" path="/dataAccessFailure.jsp"/> </global-exceptions>

2.  dataAccessFailure.jsp:

<%@ include file="/taglibs.jsp" %>

<h3>Data Access Failure</h3> <p> <c:out value="${requestScope['org.apache.struts.action.EXCEPTION'].message}"/> </p>



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Thanks,

Matt

Managed Bean can't catch checked exception

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