spring3login 登录代码 示例

package com.hisoft.controller; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import com.hisoft.pojo.User; @Controller @RequestMapping("/user") public class UserController { @RequestMapping(value="/login") public String login(HttpServletRequest request, HttpServletResponse response,User userinfo) { // 非常方便可以直接在方法里面放入对象 String username=userinfo.getUsername(); String password=userinfo.getPassword(); if ((!"".equals(username)||""!=username)&&(!"".equals(password)||""!=password)) { request.setAttribute("user", userinfo); return "users/loginsucc"; //判断，将跳转不同的页面 } else { request.setAttribute("message", "用户名和密码不能为空 ！"); return "users/loginerr"; //判断，将跳转不同的页面 } } }