mustloginaction.java

ActionForward的使用 1、理解全局和局部ActionForward的概念 2、redirect的使用 3、struts-config.xml文件不允许动态修改 4、理解动态Ac

package com.bjsxt.struts;

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;

public class MustLoginAction extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		
		if (request.getSession().getAttribute("user") == null) {
			
			ActionForward af = mapping.findForward("login");
			
			//struts-config.xml文件不能修改
			//af.setRedirect(false);
			return af;
			
			//重定向
			//response.sendRedirect(request.getContextPath() + "/login.jsp");
			//return null;
		}
		return mapping.findForward("success");
	}

}