SpringBoot整合redis把用户登录信息存入redis

首先引入redis的jai包

<dependency>
    <groupId>org.springframework.bootgroupId>
    <artifactId>spring-boot-starter-data-redisartifactId>
dependency>

在userserviceimpl引用springboot自带的StringRedisTemplate

@Autowired
private StringRedisTemplate stringRedisTemplate;

在userserviceimpl中通过usermapper查询到用户名和密码等用户信息后

 

如果user != null ,把user实体类转换成json格式，redis是key/value格式，保证数据唯一性，所以key用uuid做key，user做value，确保唯一性

 

插入到redis后要在获取key的话要用到cookie了，把key存到cookie中，取的时候在cookie中取

 

//把user实体类转化成json格式
String userJoin = JSON.toJSONString(user);
    if (user != null) {
        //获取uuid
        String uuid = UUIDUtils.getUUID();
        //创建cookie
        Cookie cookie = new Cookie("userCookie", uuid);
        response.addCookie(cookie);
        //把用户信息存入redis  set（key，value，过期时长，过期格式） 设置三天过期
        stringRedisTemplate.opsForValue().set("user" + "/" + uuid, userJoin, 3, TimeUnit.DAYS);
 
        return Msg.ok("");
    } else {
 
        return Msg.failure("用户名或密码错误");
 
    }

然后在usercontroller获取的时候

@RequestMapping(value = "/toMainPage")
    public ModelAndView toMainPage(HttpServletRequest request, HttpServletResponse response) {
        ModelAndView mv;
        String struuid = null;
                //获取cookie里面的uuid
        Cookie[] cookies = request.getCookies();
        for (Cookie cookie : cookies) {
            if (cookie.getName().equalsIgnoreCase("userCookie")) {
                struuid = cookie.getValue();
            }
        }
 
        if (struuid == null) {
            System.out.println("验证不通过");
 
            System.out.println("UUID不存在");
 
        }
 
        String userJson;
        try {
                        //根据struuid，在redis中获取user信息    userJson = stringRedisTemplate.opsForValue().get("user" + "/" + struuid);
            JSONObject pa = JSONObject.parseObject(userJson);
            if ("管理员".equals(pa.getString("uRank")) && userJson != null) {
                mv = new ModelAndView("index");
                mv.addObject("user", pa.getString("uName"));
                mv.addObject("id", pa.getString("id"));
                mv.addObject("uPwd", pa.getString("uPwd"));
                 
 
            } else if ("普通用户".equals(pa.getString("uRank")) && userJson != null) {
                mv = new ModelAndView("pt_index");
                mv.addObject("user", pa.getString("uName"));
                mv.addObject("id", pa.getString("id"));
                mv.addObject("uPwd", pa.getString("uPwd"));
 
            } else {
                mv = new ModelAndView("redirect:login");
            }
 
        } catch (Exception e) {
            // TODO Auto-generated catch block
            mv = new ModelAndView("redirect:login");
        }
        return mv;
    }