cannot find Action class

When I deploy my application on weblogic, it gives that it's not able to find Action my action class. What may be the reason?

Could you copy/paste the exact text? thx

Here' s the server log:

005-01-21 18:01:01,703 WARN [ExecuteThread: '10' for queue: 'default'] authentication.AuthenticationFilterBase (AuthenticationFilterBase.java:105) - doFilter exception: java.lang.NoClassDefFoundError: org/apache/struts/action/Action
java.lang.NoClassDefFoundError: org/apache/struts/action/Action
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:488)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:106)
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:401)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:162)
at java.lang.ClassLoader.loadClass(ClassLoader.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:287)
at java.lang.ClassLoader.loadClass(ClassLoader.java:250)
at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:41)
at org.apache.struts.util.RequestUtils.applicationClass(RequestUtils.java:207)
at org.apache.struts.util.RequestUtils.applicationInstance(RequestUtils.java:231)
at org.apache.struts.action.RequestProcessor.processActionCreate(RequestProcessor.java:326)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:268)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1094)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:437)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:20)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at com.imany.foundation.webapp.authentication.AuthenticationFilterBase.doFilter(AuthenticationFilterBase.java:96)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:5632)
at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:685)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3213)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2555)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:251)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:219)

Is struts.jar in your WEB-INF/lib directory?

i am not using tomcat. I am using weblogic 7. I am creating jar and then war.
I know in tomcat there's a web-inf/lib where we place struts.jar and all struts jar files. However, what's equivalent in weblogic when we create jar and the deploy war. where should all struts.jar files go?

For war/web application libraries weblogic also uses WEB-INF/lib, check out bea's documentation.

Starting with WebLogic Server version 8.1 there's also APP-INF/lib in the ear for libraries used by the whole application. Check out WebLogic Server Application Classloading.

java.lang.NoClassDefFoundError: org/apache/struts/action/Action
at java.lang.ClassLoader.defineClass0(Native Method)

please check web.xml file .

you have value in load-on-startup tag = 1 ro not ?