java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuterFilter

Question

I copied all struts2 jars to the WEB-INF/lib folder and the struts.xml file is as shown below:

Answer 1

For new release of Struts2 class path changed as like below (Struts 2.5)

org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter

Package names have changed Some classes were moved to different packages, see the list below for more details:

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New:

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org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter
org.apache.struts2.dispatcher.filter.StrutsExecuteFilter
org.apache.struts2.dispatcher.filter.StrutsPrepareFilter
org.apache.struts2.dispatcher.listener.StrutsListener
org.apache.struts2.result.ServletRedirectResult
com.opensymphony.xwork2.interceptor.ValidationAware 

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Old:

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org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
org.apache.struts2.dispatcher.ng.filter.StrutsExecuteFilter
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter
org.apache.struts2.dispatcher.ng.listener.StrutsListener
org.apache.struts2.dispatcher.ServletRedirectResult
com.opensymphony.xwork2.ValidationAware 

For More Detail Click Here

Answer 2

Regarding to the error mentioned SEVERE: Exception starting filter struts2 java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

PROBLEM: There seems to be a problem with the following combination Eclipse - WTPPlugin - Struts2 - Maven3

FINDINGS: We assume that when we run a project as "Run on server" we assume that eclipse runs maven, created WAR file and deploys on the server. But its not working perfectly for me. I do see the WAR file in the target folder where maven creates WAR, and the WAR is perfect. But eclipse seems to run something else.

SOLUTION: Put all the required JAR files into eclipse project's WEB-INF/lib. If you are using version control, make sure to ignore the lib folder. How to find all the required JARs when you are using maven? Go to target folder and the WAR file. Burst it open and go to WEB-INF/lib. Copy all these JARS to eclipse project's WEB-INF/lib.

Thanks, Harsh

Answer 3

Include this mapping in your web.xml file

<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>

Answer 4

It happened with me, and I solve it by recreating the artifacts from Intellij settings. If you use Intellij, you need to recreate the Artifacts for your web project again.

• Go to File --> Project structure
• Select Artifacts from the left tab.
• Remove the current artifacts by select the artifacts and click on (-) button at the top of your Artifacts.
• Add new artifacts, first war exploded then war archive.
• Enjoy.