redisTemplate实现分布式锁（释放锁用lua脚本）

package com.xxx.platform.util;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.script.DefaultRedisScript;
import org.springframework.stereotype.Component;

import java.util.Collections;
import java.util.concurrent.TimeUnit;

@Component
public class LockUtil {

    @Autowired
    private StringRedisTemplate redisTemplate;


    /**
     * 尝试获取锁 立即返回
     *
     * @param key
     * @param value
     * @param timeout
     * @return
     */
    public boolean lock(String key, String value, long timeout) {
        return redisTemplate.opsForValue().setIfAbsent(key, value, timeout, TimeUnit.SECONDS);
    }

    /**
     * 释放锁
     *
     * @param key
     * @param value
     * @return
     */
    public boolean releaseLock(String key, String value) {
        String lua = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";
        DefaultRedisScript<Long> redisScript = new DefaultRedisScript<>(lua, Long.class);
        Long result = redisTemplate.execute(redisScript, Collections.singletonList(key), value);
        return 1L == result;
    }
}

说明：上述是用的redisTemplate，其他的客户端实现类似

纸上得来终觉浅，绝知此事要躬行。