java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter when starting Simple Struts2 Application

Question

I am trying to run a simple Struts2 application but it always throw the following exception:

java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.         


        

Answer 1

I think you specified like this

<dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-core</artifactId>
    <version>X.X.X.X</version>
</dependency>

try to add

<dependency>
     <groupId>org.apache.struts</groupId>
     <artifactId>struts2-core</artifactId>
     <version>2.1.6</version>
    </dependency>

Answer 2

Use this command to convert Maven project to Dynamic Web Project for Eclipse:

mvn eclipse:eclipse -Dwtpversion=3.4.2

you may change whatever WTP version you use

.classpath should be like this

<classpath>
  <classpathentry kind="src" path="src/main/java" including="**/*.java"/>
  <classpathentry kind="src" path="src/main/resources" excluding="**/*.java"/>
  <classpathentry kind="output" path="target/classes"/>
  <classpathentry kind="var" path="M2_REPO/asm/asm/3.3/asm-3.3.jar"/>
  <classpathentry kind="var" path="M2_REPO/asm/asm-commons/3.3/asm-commons-3.3.jar"/>
  <classpathentry kind="var" path="M2_REPO/asm/asm-tree/3.3/asm-tree-3.3.jar"/>
  <classpathentry kind="var" path="M2_REPO/commons-fileupload/commons-fileupload/1.2.2/commons-fileupload-1.2.2.jar" />
  <classpathentry kind="var" path="M2_REPO/commons-io/commons-io/2.0.1/commons-io-2.0.1.jar"/>
  <classpathentry kind="var" path="M2_REPO/commons-lang/commons-lang/2.5/commons-lang-2.5.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/freemarker/freemarker/2.3.18/freemarker-2.3.18.jar"/>
  <classpathentry kind="var" path="M2_REPO/javassist/javassist/3.11.0.GA/javassist-3.11.0.GA.jar"/>
  <classpathentry kind="var" path="M2_REPO/junit/junit/3.8.1/junit-3.8.1.jar"/>
  <classpathentry kind="var" path="M2_REPO/ognl/ognl/3.0.4/ognl-3.0.4.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/apache/struts/struts2-core/2.3.1.2/struts2-core-2.3.1.2.jar"/>
  <classpathentry kind="lib" path="C:/Program Files/Java/jdk1.6.0_32/lib/tools.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/apache/struts/xwork/xwork-core/2.3.1.2/xwork-core-2.3.1.2.jar"/>
  <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
</classpath>

After build the WAR file should deploy to %CATALINA_BASE%\webapps.

Answer 3

Dear this the part of Struts 2 Core 2.2.3.1 API.

And I tried to run you linked project it is properly working for me. there is no issue.