具体实现:
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package com.hmdp.utils;import cn.hutool.core.lang.UUID;
import org.springframework.data.redis.core.StringRedisTemplate;import java.util.concurrent.TimeUnit;public class SimpleRedisLock implements ILock {private String name;private StringRedisTemplate stringRedisTemplate;private static final String KEY_PREFIX = "lock:";private static final String ID_PREFIX = UUID.randomUUID().toString(true) + "-";public SimpleRedisLock(String name, StringRedisTemplate stringRedisTemplate) {this.name = name;this.stringRedisTemplate = stringRedisTemplate;}@Overridepublic boolean tryLock(long timeoutSec) {// 获取线程的标识String threadId = ID_PREFIX + Thread.currentThread().getId();// 获取锁Boolean success = stringRedisTemplate.opsForValue().setIfAbsent(KEY_PREFIX + name, threadId, timeoutSec, TimeUnit.SECONDS);return Boolean.TRUE.equals(success);}@Overridepublic void unlock() {// 获取线程标识String threadId = ID_PREFIX + Thread.currentThread().getId();// 获取锁中的标识String id = stringRedisTemplate.opsForValue().get(KEY_PREFIX + name);// 判断标识是否一致if(threadId.equals(id)) {// 释放锁stringRedisTemplate.delete(KEY_PREFIX + name);}}
}