Redisson实现分布式锁

 		<dependency>
            <groupId>org.redisson</groupId>
            <artifactId>redisson</artifactId>
            <version>3.10.0</version>
        </dependency>

package com.xiepanpan.locks.lockstest.config;

import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.Config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @author: xiepanpan
 * @Date: 2020/2/24
 * @Description:  redisson 配置类
 */
	@Configuration
	public class RedissonConfig {

    @Bean
    RedissonClient redisson() {
        Config config = new Config();
        config.useSingleServer().setAddress("redis://192.168.217.130:6379");
        return Redisson.create(config);
    }
}

	@Autowired
    RedissonClient redissonClient;
	public void  useRedissonForLock() {
        //1、获取一把锁。只要各个代码，用的锁名一样即可
        RLock lock = redissonClient.getLock("lock");
        try {
            // 一直等待 阻塞住
//            lock.lock();

            //加锁带自动解锁  三秒后自动解锁
            lock.lock(3,TimeUnit.SECONDS);
            Jedis jedis = jedisPool.getResource();
            String num = jedis.get("num");
            Integer i = Integer.parseInt(num);
            i+=1;
            jedis.set("num",i.toString());
            jedis.close();
        } finally {
            lock.unlock();
        }
    }