title: java.lang.ClassNotFoundException: javax.el.ELContext
body: <hr>
  
  <p>i'm trying a simple example about Struts2 ,i encountered an below issue</p>
  
  <pre><code>----------------
  Mar 02, 2014 7:16:05 PM org.apache.catalina.core.ApplicationDispatcher invoke SEVERE: Servlet.service() for servlet jsp threw exception
  ------------------------------------------------------------------------
  
  java.lang.ClassNotFoundException: javax.el.ELContext
  ----------------------------------------------------
  
      at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
      at java.lang.Class.getDeclaredMethods0(Native Method)
      at java.lang.Class.privateGetDeclaredMethods(Class.java:2442)
      at java.lang.Class.privateGetPublicMethods(Class.java:2562)
      at java.lang.Class.privateGetPublicMethods(Class.java:2578)
      at java.lang.Class.privateGetPublicMethods(Class.java:2578)
      at java.lang.Class.getMethods(Class.java:1427)
      at freemarker.ext.beans.BeansWrapper.discoverAccessibleMethods(BeansWrapper.java:1395)
      at freemarker.ext.beans.BeansWrapper.discoverAccessibleMethods(BeansWrapper.java:1385)
      at freemarker.ext.beans.BeansWrapper.populateClassMapWithBeanInfo(BeansWrapper.java:1129)
      at freemarker.ext.beans.BeansWrapper.populateClassMap(BeansWrapper.java:1072)
      at freemarker.ext.beans.BeansWrapper.introspectClassInternal(BeansWrapper.java:1010)
      at freemarker.ext.beans.BeansWrapper.introspectClass(BeansWrapper.java:969)
      at freemarker.ext.beans.BeanModel.&lt;init&gt;(BeanModel.java:140)
      at freemarker.ext.beans.StringModel.&lt;init&gt;(StringModel.java:90)
      at freemarker.ext.beans.StringModel$1.create(StringModel.java:75)
      at freemarker.ext.beans.BeansModelCache.create(BeansModelCache.java:45)
      at freemarker.ext.util.ModelCache.getInstance(ModelCache.java:115)
      at freemarker.ext.beans.BeansWrapper.wrap(BeansWrapper.java:468)
      at freemarker.ext.beans.BeansWrapper.invokeMethod(BeansWrapper.java:867)
      at freemarker.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:106)
      at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93)
      at freemarker.core.Expression.getAsTemplateModel(Expression.java:89)
      at freemarker.core.ExistsExpression._getAsTemplateModel(ExistsExpression.java:71)
  
          .........
  </code></pre>
  
  <p><strong>It's it caused by  the conflict of of the packages i import?</strong></p>