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Difference Between FilterDispatcher and StrutsPrepareAndExecuteFilter in Struts 2

December 13, 2013 //  by Krishna Srinivasan//  Leave a Comment

If you are working on the Struts 2 applications, you would have noticed that while configuring the Struts 2 filter in your web.xml deployment descriptor, there is two different classes are used. One is org.apache.struts2.dispatcher.FilterDispatcher and another one is org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.

The simple answer is,

  • org.apache.struts2.dispatcher.FilterDispatcher – Used in the early development of Struts 2 and deprecated from the version 2.1.3
  • org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter – Introduced from the Struts 2.1.3. If you are using the higher version, it is always recommended to use this API.

FilterDispatcher Configuration

<filter>
   <filter-name>struts2</filter-name>
   <filter-class>
     org.apache.struts2.dispatcher.FilterDispatcher
   </filter-class>
</filter>

<filter-mapping>
   <filter-name>struts2</filter-name>
   <url-pattern>/*</url-pattern>
</filter-mapping>

StrutsPrepareAndExecuteFilter Configuration

<filter>
  <filter-name>struts2</filter-name>
  <filter-class>
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
  </filter-class>
</filter>

<filter-mapping>
   <filter-name>struts2</filter-name>
   <url-pattern>/*</url-pattern>
</filter-mapping>

Category: StrutsTag: Struts 2 Tutorials

About Krishna Srinivasan

He is Founder and Chief Editor of JavaBeat. He has more than 8+ years of experience on developing Web applications. He writes about Spring, DOJO, JSF, Hibernate and many other emerging technologies in this blog.

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