Global exception handling in Struts 2

Question

How can I implement a global exception handler for Apache Struts 2?

I'm using annotations (with struts.property) and NOT struts.xml.

I have got it to work for action-classes (at class and method level) but I would like something more global like a stand-alone class.

Can I for example use the ExeptionHandler from Struts 2? Hard to find documentation and examples.

Any ideas?

Answer 1

You can map exceptions to result that calls the action that would handle the exception.

<global-results>
    <result name="exception" type="chain">
        <param name="actionName">exceptionHandler</param>
        <param name="namespace">/</param>
    </result>
</global-results>
<global-exception-mappings>
    <exception-mapping exception="java.lang.Exception" result="exception" />
</global-exception-mappings>

References:

• Exception Configuration
• Result Configuration