jsp登陆问题,我用的是eclipse

LoginAction为:
package com;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;

public class LoginAction extends DispatchAction {
public ActionForward abc(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response){
System.out.println("hao ");
//return mapping.findForward("ok");
return new ActionForward("ok");
}
}

tiles-defination.xml:
<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE tiles-definitions PUBLIC
"-//Apache Software Foundation//DTD Tiles Configuration 1.1//EN"
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