Question

I am trying to extend ExceptionMappingInterceptor. I created a listener which overrides ExceptionMappingInterceptor’s publishException(…) method. But it is not listening for any global exceptions which are not handled in the application.

Here are my configurations.

//Handler

public class GlobalExceptionHandler extends ExceptionMappingInterceptor 
{
    private Logger logger = AppLogger.getLogger(this.getClass());

    @Override
    protected void publishException(ActionInvocation invocation, ExceptionHolder exceptionHolder) 
    {
        logger.error("Global Exception msg: "+ exceptionHolder.getException().getMessage(), exceptionHolder.getException());
        super.publishException(invocation, exceptionHolder);
    }
}

In struts.xml

<interceptors>
     <interceptor name="sessionInterceptor" class="com.jak.session.SessionInterceptor" />
     <interceptor name="exception" class="com.jak.exception.GlobalExceptionHandler" />
     <interceptor-stack name="mymatrixxInterceptorStack">
        <interceptor-ref name="exception"></interceptor-ref>
        <interceptor-ref name="defaultStack"></interceptor-ref>
        <interceptor-ref name="sessionInterceptor"/>
     </interceptor-stack>
</interceptors>

<global-results>
    <result name="exception" type="tiles">myAccount</result>
</global-results>

<global-exception-mappings>
    <exception-mapping exception="java.lang.Exception" result="exception" />
</global-exception-mappings>

<action name="myAccount">
     <interceptor-ref name="mymatrixxInterceptorStack"></interceptor-ref>
     <result type="tiles">errorPage</result>
</action>

While uploading a file I got an exception as ‘No result defined for action com.dsdar.business.offer.CampaignUpdateAction and result input‘. But this exception is not handled by this interceptor. I don’t the reason why it is not listening.

Answer 1

In struts.xml

 <interceptors>
 <interceptor name="sessionInterceptor" class="com.jak.session.SessionInterceptor" />
        <interceptor name="exception"
            class="com.jak.exception.GlobalExceptionHandler" />
        <interceptor-stack name="mymatrixxInterceptorStack">
            <interceptor-ref name="exception"></interceptor-ref>
            <!--<interceptor-ref name="defaultStack"></interceptor-ref>--><!-- Here!! -->

            <interceptor-ref name="myDefaultStack"></interceptor-ref><!--  Here!!  -->

            <interceptor-ref name="sessionInterceptor" />
        </interceptor-stack>

        <interceptor-stack name="myDefaultStack">

            <!-- <interceptor-ref name="exception"/> --><!-- Here!! -->

            <interceptor-ref name="alias" />
            <interceptor-ref name="servletConfig" />
            <interceptor-ref name="i18n" />
            <interceptor-ref name="prepare" />
            <interceptor-ref name="chain" />
            <interceptor-ref name="debugging" />
            <interceptor-ref name="scopedModelDriven" />
            <interceptor-ref name="modelDriven" />
            <interceptor-ref name="fileUpload" />
            <interceptor-ref name="checkbox" />
            <interceptor-ref name="multiselect" />
            <interceptor-ref name="staticParams" />
            <interceptor-ref name="actionMappingParams" />
            <interceptor-ref name="params">
                <param name="excludeParams">dojo\..*,^struts\..*</param>
            </interceptor-ref>
            <interceptor-ref name="conversionError" />
            <interceptor-ref name="validation">
                <param name="excludeMethods">input,back,cancel,browse</param>
            </interceptor-ref>
            <interceptor-ref name="workflow">
                <param name="excludeMethods">input,back,cancel,browse</param>
            </interceptor-ref>
        </interceptor-stack>

    </interceptors>

    <global-results>
        <result name="exception" type="tiles">myAccount</result>
    </global-results>

    <global-exception-mappings>
        <exception-mapping exception="java.lang.Exception"
            result="exception" />
    </global-exception-mappings>

    <action name="myAccount">
        <interceptor-ref name="mymatrixxInterceptorStack"></interceptor-ref>
        <result type="tiles">errorPage</result>
    </action>

I do not understand English. The reason is, please ask someone. (> _ <)