Redirect to a JSF page when Throwable exception or error occur
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Key: MYFACES-1889
URL: https://issues.apache.org/jira/browse/MYFACES-1889
Project: MyFaces Core
Issue Type: New Feature
Reporter: Leonardo Uribe
Assignee: Leonardo Uribe
One possible enhancement to the error handling feature of myfaces could be the
capability of redirect to a jsf page.
I have studied the issue in deep and the thing could be as described below:
1. Add this configuration to WEB-INF/web.xml
<context-param>
<description>
Handle exceptions with jsf redirect page.
</description>
<param-name>org.apache.myfaces.ERROR_HANDLING_REDIRECT_PAGE</param-name>
<param-value>true</param-value>
</context-param>
2. Define a navigation rule like this:
<navigation-rule>
<from-view-id>*</from-view-id>
<navigation-case>
<from-outcome>java.lang.NullPointerException</from-outcome>
<to-view-id>/nullErrorPage.jsp</to-view-id>
</navigation-case>
</navigation-rule>
Note that in from-outcome there is defined the class name of the error to be
redirected by this page.
The first test of this feature has been successful, but there are some
questions to be solved:
1. How to add error information (maybe add as a value on the request scope like
exceptionList)
2. How to handle multiple errors, maybe the best is use a special outcome like
org.apache.myfaces.MultipleThrowable
I'll do some test this weekend and add a possible patch of this feature.
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