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...
<interceptors>
    ...
    <interceptor name="exception" class="com.opensymphony.xwork.interceptor.ExceptionMappingInterceptor"/>
    ...
</interceptors>

<interceptor-stack name="defaultStack">
    <interceptor-ref name="exception"/>
    <interceptor-ref name="alias"/>
    <interceptor-ref name="servlet-config"/>
    <interceptor-ref name="prepare"/>
    <interceptor-ref name="i18n"/>
    <interceptor-ref name="chain"/>
    <interceptor-ref name="debugging"/>
    <interceptor-ref name="profiling"/>
    <interceptor-ref name="scoped-model-driven"/>
    <interceptor-ref name="model-driven"/>
    <interceptor-ref name="fileUpload"/>
    <interceptor-ref name="checkbox"/>
    <interceptor-ref name="static-params"/>
    <interceptor-ref name="params"/>
    <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>
...

<struts>
    <package name="default">
        ...
        <global-results>
            <result name="login" type="redirect">/Login.action</result>
            <result name="Exception">/Exception.jsp</result>
        </global-results>

        <global-exception-mappings>
            <exception-mapping exception="java.sql.SQLException" result="SQLException"/>
            <exception-mapping exception="java.lang.Exception" result="Exception"/>
        </global-exception-mappings>
        ...
        <action name="DataAccess" class="com.company.DataAccess">
            <exception-mapping exception="com.company.SecurityException" result="login"/>
            <result name="SQLException" type="chain">SQLExceptionAction</result>
            <result>/DataAccess.jsp</result>
        </action>
        ...
    </package>
</xwork>

 
<h2>An unexpected error has occurred</h2>
<p>
    Please report this error to your system administrator
    or appropriate technical support personnel.
    Thank you for your cooperation.
</p>
<hr/>
<h3>Error Message</h3>
<s:actionerror/>
<p>
    <s:property value="%{exception.message}"/>
</p>
<hr/>
<h3>Technical Details</h3>
<p>
    <s:property value="%{exceptionStack}"/>
</p>