办公自动化项目从无到有-第二篇登录注册

1.首先页面效果为

 2.登录页面的显示

@RequestMapping(value="logins",method=RequestMethod.GET)
public String login(){
return "login/login";
}

3.服务端登录检查

@RequestMapping(value="logins",method = RequestMethod.POST)
public String loginCheck(HttpSession session,HttpServletRequest req,Model model) throws UnknownHostException{
  String userName=req.getParameter("userName").trim();
  String password=req.getParameter("password");
  String ca=req.getParameter("code").toLowerCase();
  String sesionCode = (String) req.getSession().getAttribute(CAPTCHA_KEY);//对比生成验证码的session中
  model.addAttribute("userName", userName);
       //验证码比对
       if(!ca.equals(sesionCode.toLowerCase())){
          System.out.println("验证码输入错误!");
          model.addAttribute("errormess", "验证码输入错误!");
          req.setAttribute("errormess","验证码输入错误!");
          return "login/login";
        }
        //用户信息查找
	User user=uDao.findOneUser(userName, password);
	if(Objects.isNull(user)){
	model.addAttribute("errormess", "账号或密码错误!");
	return "login/login";
	}
        //用户状态校验
	if(user.getIsLock()==1){
	model.addAttribute("errormess", "账号已被冻结!");
	return "login/login";
	}
	Object sessionId=session.getAttribute("userId");
        //重复登录情形判断
	if(sessionId==user.getUserId()){
	model.addAttribute("hasmess", "当前用户已经登录了；不能重复登录");
	session.setAttribute("thisuser", user);
	return "login/login";
	}else{
	session.setAttribute("userId", user.getUserId());
	Browser browser = UserAgent.parseUserAgentString(req.getHeader("User-Agent")).getBrowser();
	Version version = browser.getVersion(req.getHeader("User-Agent"));
	String info = browser.getName() + "/" + version.getVersion();
	String ip=InetAddress.getLocalHost().getHostAddress();
	/*新增登录记录*/
        ulService.save(new LoginRecord(ip, new Date(), info, user));
	}
	return "redirect:/index";
	}

 这个登录过程并没有应用到安全框架,在后期改版时会加上shiro。