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.boot</groupid>
    <artifactid>spring-boot-starter-data-redis</artifactid>
</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;
    }