examcloud-app-api/src/main/java/cn/com/qmth/examcloud/app/service/RedisService.java

package cn.com.qmth.examcloud.app.service;

import cn.com.qmth.examcloud.app.core.utils.JsonMapper;
import cn.com.qmth.examcloud.app.model.UserToken;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

import static cn.com.qmth.examcloud.app.model.Constants.REDIS_KEY_PREFIX;

@Service
public class RedisService {
    private static Logger log = LoggerFactory.getLogger(RedisService.class);
    @Autowired
    private StringRedisTemplate redisTemplate;

    public void set(String key, String value) {
        redisTemplate.opsForValue().set(key, value);
    }

    public void set(String key, String value, long seconds) {
        redisTemplate.opsForValue().set(key, value, seconds, TimeUnit.SECONDS);
    }

    public String get(String key) {
        return redisTemplate.opsForValue().get(key);
    }

    public boolean exist(String key) {
        return redisTemplate.hasKey(key);
    }

    public void delete(String key) {
        redisTemplate.delete(key);
    }

    public void cacheUserToken(String key, UserToken value, long seconds) {
        this.set(REDIS_KEY_PREFIX + key, new JsonMapper().toJson(value), seconds);
    }

    public UserToken getUserToken(String key) {
        String value = this.get(REDIS_KEY_PREFIX + key);
        if (value != null) {
            return new JsonMapper().fromJson(value, UserToken.class);
        }
        return null;
    }

}