展开全部

后台方62616964757a686964616fe78988e69d8331333365663433法:

private HttpServletResponse response = ServletActionContext.getResponse();// 用户登录public String login() throws IOException {System.out.println("login");// md5加密密码MD5 md5 = new MD5(password);String pas = md5.compute();Users u = new Users();u.setUsername(username);u.setPassword(pas);//使用ajax调用返回值response.setContentType("text/plain;charset=UTF-8");response.setHeader("pragma", "no-cache");response.setHeader("cache-control", "no-cache");PrintWriter write = response.getWriter();// 用户用户登录--存在返回id，不存在或者 密码错误返回-1锁定状态返回-2int res = manager.checkUser(u);// System.out.println(res + "useraction");if (res == -1) {String str = "{\"success\":false,\"msg\":\"您输入用户不存在或者密码错误，请重新输入\"}";write.write(str);write.flush();write.close();return null;}if (res == -2) {// System.out.println("zhanghaosuoding");String str = "{\"success\":false,\"msg\":\"您输入的账号已经被锁定\"}";write.write(str);write.flush();write.close();return null;}Users u2 = manager.findOneUsers(res);// System.out.println(u2.getUsername()+"-"+u2.getPassword());// 把用户信息和上次登录时间放到session中，在页面上显示ActionContext.getContext().getSession().put("user", u2);ActionContext.getContext().getSession().put("lastlogin", u2.getLastLoginTime().toString().substring(0, 10));// 更新这次登录时间到数据库java.sql.Timestamp lastLogin = new java.sql.Timestamp(new java.util.Date().getTime());u2.setLastLoginTime(lastLogin);manager.updateUser(u2);String str = "{\"success\":true,\"msg\":\"登陆成功\"}";write.write(str);write.flush();write.close();return null;