Introduction
In this tutorial we'll explore how to enable the Struts 2 framework to handle any uncaught exceptions generated by a web application. Struts 2 provides robust exception handling, including the ability to automatically log any uncaught exceptions and redirect the user to a error web page.
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| 1 | struts.xml Global Exception Handling |
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<global-results>
<result name="securityerror">/securityerror.jsp</result>
<result name="error">/error.jsp</result>
</global-results>
<global-exception-mappings>
<exception-mapping exception="org.apache.struts.register.exceptions.SecurityBreachException" result="securityerror" />
<exception-mapping exception="java.lang.Exception" result="error" />
</global-exception-mappings>
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| 1 | struts.xml Action Specific Exception Mapping |
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<action name="actionspecificexception" class="org.apache.struts.register.action.Register" method="throwSecurityException">
<exception-mapping exception="org.apache.struts.register.exceptions.SecurityBreachException"
result="login" />
<result>/register.jsp</result>
<result name="login">/login.jsp</result>
</action>
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| 1 | struts.xml Enable Exception Logging |
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<interceptors>
<interceptor-stack name="appDefaultStack">
<interceptor-ref name="defaultStack">
<param name="exception.logEnabled">true</param>
<param name="exception.logLevel">ERROR</param>
</interceptor-ref>
</interceptor-stack>
</interceptors>
<default-interceptor-ref name="appDefaultStack" />
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<h4>The application has malfunctioned.</h4>
<p> Please contact technical support with the following information:</p>
<h4>Exception Name: <s:property value="exception" /> </h4>
<h4>Exception Details: <s:property value="exceptionStack" /></h4>
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