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The example code for this tutorial, interceptors, is available on for checkout at https://svn.apache.org/repos/asf/struts/sandbox/trunk/struts2examples/^{Image Removed}

Introduction

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Sometime the Struts 2 default stack of interceptors are not exactly what you need for a particular action. You may want to use interceptors that are not part of the Struts 2 default stack. For an individual Action or for the entire package of Actions, you can specify a different stack of interceptors that the Action or package should use. Below is how you would specify that the register Action should use both the logger and timer interceptors in addition to the interceptors provided by the default stack.

Code Block

	xml	xml
title	Specify Specific Interceptors For An Action
	xml


<action name="register" class="org.apache.struts.register.action.Register" method="execute">
	<interceptor-ref name="timer" />
	<interceptor-ref name="logger" />
	<interceptor-ref name="defaultStack">
		<param name="exception.logEnabled">true</param>
		<param name="exception.logLevel">ERROR</param>
	</interceptor-ref>
	<result name="success">thankyou.jsp</result>
	<result name="input">register.jsp</result>
</action>

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If you wanted to have the logger and timer interceptors executed for all Actions in a package you would use the following in struts.xml:

Code Block

	xml	xml
title	Specify Specific Interceptors For A Package
	xml


<package name="basicstruts2" extends="struts-default" > 


       <interceptors> 

         <interceptor-stack name="appDefault"> 

            <interceptor-ref name="timer" /> 

            <interceptor-ref name="logger" /> 

            <interceptor-ref name="defaultStack" /> 

         </interceptor-stack> 

        </interceptors>          

        <default-interceptor-ref name="appDefault" /> 

       <!-- rest of package omitted --> 

</package>

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Introduction