我用struts框架的时候，提示Cannot cast from ActionForm to user

Question

package UserBean;

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

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import Dao.UserDao;

public class AddUserAction extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		// TODO Auto-generated method stub
		user u=(user)form;
		UserDao ud=new UserDao();
		ud.addUser(u);
		return mapping.findForward("list");
	}

}

user u=(user)form;怎么解决Cannot cast from ActionForm to user？求指点

Answer 1

注意你的user是否继承了ActionForm