redisssion 工具类

引入jar包

<redisson.version>3.13.4</redisson.version>
<dependency>
<groupId>org.redisson</groupId>
<artifactId>redisson</artifactId>
<version>${redisson.version}</version>
</dependency>

//配置项

public class RedissonManager {
private static Config config = new Config();
//声明redisso对象
private static Redisson redisson = null;
//实例化redisson
static{
 
config.useSingleServer().setAddress("redis://127.0.0.1:6379").setPassword("xxxx");
//得到redisson对象
redisson = (Redisson) Redisson.create(config);
}
//获取redisson对象的方法
public static Redisson getRedisson(){
return redisson;
}

//加锁

@Slf4j
public class DistributedRedisLock {
//从配置项获取redisson对象
private static final Redisson redisson = RedissonManager.getRedisson();
private static final String LOCK_TITLE = "REDIS_LOCK_";
 
//加锁
public static boolean acquire(String lockName) {
//声明key对象
String key = LOCK_TITLE + lockName;
//获取锁对象
RLock lock = redisson.getLock(key);
lock.lock();
//lock.lock(10,TimeUnit.SECONDS); 这种是10秒后锁自动过期，不会有自动续期的机制
 
//boolean res = lock.tryLock(100, 10, TimeUnit.SECONDS); 尝试加锁，最多等待100秒，上锁以后10秒自动解锁
log.info("加锁lock--------------------------------->" + Thread.currentThread().getName());
//加锁成功
return true;
}

//锁的释放

public static void release(String lockName) {
//必须是和加锁时的同一个key
String key = LOCK_TITLE + lockName;
//获取所对象
RLock lock = redisson.getLock(key);
//释放锁（解锁）
lock.unlock();
log.info("释放锁unlock--------------------------------->" + Thread.currentThread().getName());
}
}