jsp - java.lang.NoClassDefFoundError: com/opensymphony/xwork2/ModelDriven -

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i getting error while running login application in struts .every required jar installed saw many solutions of missing jar xwork-core-2.3.24.1.i did solution still getting same error.

i pasting struts.xml , web.xml file here:

<?xml version="1.0" encoding="utf-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"      xmlns="http://java.sun.com/xml/ns/javaee"           xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"              xsi:schemalocation="http://java.sun.com/xml/ns/javaee                     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"                           id="webapp_id" version="2.5"> <context-param>     <param-name>         org.apache.tiles.impl.basictilescontainer.definitions_config</param-name>     <param-value>/web-inf/tiles.xml</param-value> </context-param>  <listener>     <listener-class>org.apache.struts2.tiles.strutstileslistener</listener-class> </listener>  <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> <welcome-file-list>     <welcome-file>index.jsp</welcome-file> </welcome-file-list> <error-page>     <exception-type>java.lang.throwable</exception-type>     <location>/error.jsp</location> </error-page> <error-page>     <error-code>400</error-code>     <location>/error.jsp</location> </error-page> <error-page>     <error-code>401</error-code>     <location>/error.jsp</location> </error-page> <error-page>     <error-code>404</error-code>     <location>/error.jsp</location> </error-page> <error-page>     <error-code>500</error-code>     <location>/error.jsp</location> </error-page> <error-page>     <error-code>501</error-code>     <location>/error.jsp</location> </error-page>


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