redis分布式锁之redisson使用

1.maven中加入pom依赖

    org.redisson
    redisson
    3.11.3

2.增加配置类

package com.cloud.serviceauthorize.config;

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

import java.io.IOException;



@Configuration
public class RedissonConfig {

    @Value("${spring.redis.host}")
    private String host;
    @Value("${spring.redis.port}")
    private String port;
    @Value("${spring.redis.password}")
    private String password;
//    @Value("spring.redis.cluster.nodes")
//    private String clusterNodes;

    //本地启动需要把它注掉开启单机模式
    @Value("${spring.redis.cluster.nodes}")
    private  String cluster;

    
    @Bean(destroyMethod = "shutdown")
    public RedissonClient redisson() throws IOException {
        String[] nodes = cluster.split(",");
        //redisson版本是3.5，集群的ip前面要加上“redis://”，不然会报错，3.2版本可不加
        for(int i=0;i 
3.增加工具类
 
package com.cloud.serviceauthorize.util;


import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.concurrent.TimeUnit;


@Component
public class RedissonUtil {

    @Autowired
    private RedissonClient redissonClient; // RedissonClient已经由配置类生成，这里自动装配即可

    
    public RLock lock(String lockKey) {
        RLock lock = redissonClient.getLock(lockKey);
        lock.lock();
        return lock;
    }

    
    public RLock lock(String lockKey, long leaseTime) {
        RLock lock = redissonClient.getLock(lockKey);
        lock.lock(leaseTime, TimeUnit.SECONDS);
        return null;
    }

    
    public RLock lock(String lockKey, TimeUnit unit, long timeout) {
        RLock lock = redissonClient.getLock(lockKey);
        lock.lock(timeout, unit);
        return lock;
    }

    
    public boolean tryLock(String lockKey, TimeUnit unit, long waitTime, long leaseTime) {
        RLock lock = redissonClient.getLock(lockKey);
        try {
            return lock.tryLock(waitTime, leaseTime, unit);
        } catch (InterruptedException e) {
            return false;
        }
    }

    
    public void unlock(String lockKey) {
        RLock lock = redissonClient.getLock(lockKey);
        lock.unlock();
    }

    
    public void unlock(RLock lock) {
        lock.unlock();
    }

}
 
4.测试案例