token的设置与获取

以用户登录为例：

application-resources.yml：

#用户session在redis中保存的key
REDIS_STU_SESSION_KEY: REDIS_USER_SESSION

#session过期时间
STU_SESSION_EXPIRE: 7200

StuService.java：

    //验证用户账号密码
    CustomResult checkLogin(User user, HttpSession session);

    //获取token
    CustomResult getStuByToken(String token);

StuServiceImpl.java：

    @Autowired
    private RedisClient redisClient;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private TaskMapper taskMapper;

    @Value("${REDIS_STU_SESSION_KEY}")
    private String REDIS_STU_SESSION_KEY;
    @Value("${STU_SESSION_EXPIRE}")
    private Integer STU_SESSION_EXPIRE;


/**
     * @return boolean
     * @Description //验证用户是否存在
     * @Date 2019-03-31 21:59
     * @Param [user]
     **/
    @Override
    public CustomResult checkLogin(User user,HttpSession session) {
        CustomResult result = new CustomResult();

        UserExample userExample = new UserExample();
        UserExample.Criteria criteria = userExample.createCriteria();
        criteria.andUsernameEqualTo(user.getUsername());
        criteria.andPasswordEqualTo(user.getPassword());
        List<User> userList1 = userMapper.selectByExample(userExample);

        //HttpServletRequest request = null;
        //HttpSession session = request.getSession();
        if (userList1.isEmpty()) {
            result.setMsg("账号或密码错误，请重试！");
            //return 0;//用户不存在
            return result;
        } else {
            criteria.andRoleEqualTo(2);
            List<User> userList2 = userMapper.selectByExample(userExample);
            if (userList2.isEmpty()){
                result.setMsg("您已成功注册，请等待管理员审核！");
                return result;
                //return 1;//等待分配权限，管理员审核
            }else{
                System.out.println("===================="+userList2.get(0));
                //登陆成功，设置session
                session.setAttribute("stuInfo",userList2.get(0));

                User userInfo = userList2.get(0);
                //生成token
                String token = UUID.randomUUID().toString();
                userInfo.setPassword(null);
                //用户信息写入redis（:使redis目录分层，更为简洁）
                redisClient.set(REDIS_STU_SESSION_KEY + ":" + token, JsonUtil.objectToJson(userInfo));
                //session过期时间
                redisClient.expire(REDIS_STU_SESSION_KEY + ":" + token,STU_SESSION_EXPIRE);
//Object stu = redisClient.get("stu");
                //System.out.println("========123"+stu);
                //return 2;//用户存在，通过管理员审核
                return CustomResult.ok(token);
            }

        }

    }

    /**
     * @Description //获取token
     * @Date 2019-04-10 16:06
     * @Param [token]
     * @return com.sun123.springboot.CustomResult
     **/
    @Override
    public CustomResult getStuByToken(String token) {
        String json = (String)redisClient.get(REDIS_STU_SESSION_KEY + ":" + token);
//判断是否为空
        if(StringUtils.isBlank(json)){
            return CustomResult.build(400,"此session已经过期，请重新登录");
        }
        //若不为空，更新过期时间
        redisClient.expire(REDIS_STU_SESSION_KEY + ":" + token,STU_SESSION_EXPIRE);
//返回用户信息
        return CustomResult.ok(JsonUtil.jsonToPojo(json,User.class));
    }

LoginController.java：

import com.sun123.springboot.CustomResult;
import com.sun123.springboot.entity.User;
import com.sun123.springboot.service.StuService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpSession;

/**
 * @ClassName LoginController
 * @Description TODO
 * @Date 2019/3/31 20:27
 * @Version 1.0
 */
@Controller
public class LoginController {

    @Autowired
    private StuService stuService;

    @GetMapping("/login")
    public String toLogin(){
        return "students/login/stu-login";
    }

    @PostMapping("/checkLogin")
    @ResponseBody
    public CustomResult checkLogin(User user, HttpSession session){
        //int flag = stuService.checkLogin(user,session);
        CustomResult result = stuService.checkLogin(user, session);
        return result;

    }

    @GetMapping("/token/{token}")
    @ResponseBody
    public CustomResult getUserByToken(@PathVariable String token){
        CustomResult stuByToken = stuService.getStuByToken(token);
        return stuByToken;

    }
}

代码测试：

查看响应结果：

 浏览器访问：http://localhost:8002/token/d6b4f83c-76df-4f99-b6f9-56e6ff9d6acb