基于SSM的培训机构管理系统

/**
   * 登录
   * 将提交数据(studentname,password)写入Admin对象
   */
  @RequestMapping(value = "/login")
  public String login(Student student, Model model, HttpSession session, HttpServletRequest request) {
    if(student.getUsername()==null || student.getUsername().length()<=0 ){
      model.addAttribute("msg", "请输入登录名！");
      return "login";
    }
    if(student.getPassword()==null || student.getPassword().length()<1){
      model.addAttribute("msg", "请输入密码！");
      return "login";
    }
    if(student.getType()==null || student.getType().length()<1){
      model.addAttribute("msg", "请选择人员类型！");
      return "login";
    }
    Map mp = new HashMap();
    mp.put("username",student.getUsername());
    mp.put("password",student.getPassword());
    if(student.getType().equals("01")){
      List<Admin> ad = adminService.queryFilter(mp);
      if(ad!=null && ad.size()==1){
        session.setAttribute("ad", ad.get(0));
        session.setAttribute("type", "01");
        return "homepage1";
      }else{
        model.addAttribute("msg", "请确定账户信息是否正确！");
        return "login";
      }
    }else if(student.getType().equals("02")){
      List<Teacher> ad = teacherService.queryFilter(mp);
      if(ad!=null && ad.size()==1){
        session.setAttribute("ad", ad.get(0));
        session.setAttribute("type", "02");
        return "homepage2";
      }else{
        model.addAttribute("msg", "请确定账户信息是否正确！");
        return "login";
      }
    }else{
      List<Student> ad = studentService.queryFilter(mp);
      if(ad!=null && ad.size()==1){
        session.setAttribute("ad", ad.get(0));
        session.setAttribute("type", "03");
        return "homepage3";
      }else{
        model.addAttribute("msg", "请确定账户信息是否正确！");
        return "login";
      }
    }
  }
  /**
   * 退出登录
   */
  @RequestMapping(value = "/loginOut")
  public String loginOut(HttpSession session) {
    session.invalidate();
    return "login";
  }
  /**
   * 查询个人信息
   */
  @RequestMapping(value = "/info")
  public String info(Student student, Model model, HttpServletRequest request) {
    HttpSession session = request.getSession();
    if(session.getAttribute("ad") == null){
      session.setAttribute("msg", "对不起，请登录！");
      return "login";
    }
    return "queryInfo";
  }