redis lock (demo)

package com.gyjn.common.core.redis;


import com.gyjn.common.utils.StringUtils;
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.Component;

/**
 * @author: cyf
 * @Date: 2022/7/26 15:28
 */

@Component
public class RedisLock {

    @Autowired
    private StringRedisTemplate redisTemplate;

    private static final Logger log = LoggerFactory.getLogger(RedisLock.class);

    /**
     * 加锁
     *
     * @param key
     * @param value 当前时间+超时时间
     * @return
     */
    public boolean lock(String key, String value) {
        if (redisTemplate.opsForValue().setIfAbsent(key, value)) {
            return true;
        }
        String currentValue = redisTemplate.opsForValue().get(key);
        if (!StringUtils.isEmpty(currentValue)
                && Long.parseLong(currentValue) < System.currentTimeMillis()) {
            String oldValue = redisTemplate.opsForValue().getAndSet(key, value);
            if (!StringUtils.isEmpty(oldValue)
                    && oldValue.equals(currentValue)) {

                return true;

            }
        }
        return false;
    }


    /**
     * 解锁
     *
     * @param key
     * @param value
     */
    public void unlock(String key, String value) {
        try {
            String currentValue = redisTemplate.opsForValue().get(key);

            if (!StringUtils.isEmpty(currentValue)
                    && currentValue.equals(value)) {
                redisTemplate.opsForValue().getOperations().delete(key);
            }
        } catch (Exception e) {
            log.error("使用redis解锁发生异常:{}", e.getMessage());
        }


    }


}

 public void everyDayExcel() {
        String key = UUID.randomUUID().toString();
        String value = DateUtils.dateTimeNow();
        try {
            redisLock.lock(key, value);
          

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            redisLock.unlock(key, value);
        }
    }