1，springboot集成redisson的时候，当redis为单节点时，直需要引入redisson的jar即可使用。

<dependency>
	<groupId>org.redisson</groupId>
	<artifactId>redisson-spring-boot-starter</artifactId>
	<version>3.11.4</version>
</dependency>

附：redisLockUtils代码

import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.concurrent.TimeUnit;

/**
 * Created by KS15432 on 2021/11/11.
 */
@Component
public class RedisLockUtil {
    private final Logger logger = LoggerFactory.getLogger(RedisLockUtil.class);

    @Autowired
    private RedissonClient redissonClient;

   /* @Autowired
    public RedisLockUtil(@Qualifier("customRedisson") RedissonClient redissonClient) {
        this.redissonClient = redissonClient;
    }*/

    /**
     * 加锁
     * @param key 锁的 key
     * @param value  value （ key + value 必须保证唯一）
     * @param expire key 的过期时间，单位 ms
     * @param retryTimes 重试次数，即加锁失败之后的重试次数
     * @param retryInterval 重试时间间隔，单位 ms
     * @return 加锁 true 成功
     */
    public RLock lock(String key, String value, long expire, int retryTimes, long retryInterval) {
        logger.info("locking... redisK = {}", key);
        RLock fairLock = redissonClient.getFairLock(key + ":" +  value);
        try {
            boolean tryLock = fairLock.tryLock(0, expire, TimeUnit.MILLISECONDS);
            if (tryLock) {
                logger.info("locked... redisK = {}", key);
                return fairLock;
            } else {
                //重试获取锁
                logger.info("retry to acquire lock: [redisK = {}]", key);
                int count = 0;
                while(count < retryTimes) {
                    try {
                        Thread.sleep(retryInterval);
                        tryLock = fairLock.tryLock(0, expire, TimeUnit.MILLISECONDS);
                        if(tryLock) {
                            logger.info("locked... redisK = {}", key);
                            return fairLock;
                        }
                        logger.warn("{} times try to acquire lock", count + 1);
                        count++;
                    } catch (Exception e) {
                        logger.error("acquire redis occurred an exception", e);
                        break;
                    }
                }

                logger.info("fail to acquire lock {}", key);
            }
        } catch (Throwable e1) {
            logger.error("acquire redis occurred an exception", e1);
        }

        return fairLock;
    }

    /**
     * 加锁
     * @param key 锁的 key
     * @param value  value （ key + value 必须保证唯一）
     * @param expire key 的过期时间，单位 ms
     * @param retryTimes 重试次数，即加锁失败之后的重试次数
     * @param retryInterval 重试时间间隔，单位 ms
     * @return 加锁 true 成功
     */
    public boolean lock2(String key, String value, long expire, int retryTimes, long retryInterval) {
        logger.info("locking... redisK = {}", key);
        RLock fairLock = redissonClient.getFairLock(key + ":" +  value);
        try {
            boolean tryLock = fairLock.tryLock(0, expire, TimeUnit.MILLISECONDS);
            if (tryLock) {
                logger.info("locked... redisK = {}", key);
                return true;
            } else {
                //重试获取锁
                logger.info("retry to acquire lock: [redisK = {}]", key);
                int count = 0;
                while(count < retryTimes) {
                    try {
                        Thread.sleep(retryInterval);
                        tryLock = fairLock.tryLock(0, expire, TimeUnit.MILLISECONDS);
                        if(tryLock) {
                            logger.info("locked... redisK = {}", key);
                            return true;
                        }
                        logger.warn("{} times try to acquire lock", count + 1);
                        count++;
                    } catch (Exception e) {
                        logger.error("acquire redis occurred an exception", e);
                        break;
                    }
                }

                logger.info("fail to acquire lock {}", key);
                return false;
            }
        } catch (Throwable e1) {
            logger.error("acquire redis occurred an exception", e1);
            return false;
        }
    }


    /**
     * 加锁
     * @param key 锁的 key
     * @param value  value （ key + value 必须保证唯一）
     * @param expire key 的过期时间，单位 ms
     * @return 加锁 true 成功
     */
    public boolean lockCheck(String key, String value, long expire) {
        logger.info("locking... redisK = {}", key);
        RLock fairLock = redissonClient.getFairLock(key + ":" +  value);
        boolean tryLock = false;
        try {
            tryLock = fairLock.tryLock(0, expire, TimeUnit.MILLISECONDS);
        } catch (Throwable e1) {
            logger.error("acquire redis occurred an exception", e1);
        }
        return tryLock;
    }

    /**
     * 释放KEY
     * @return 释放锁 true 成功
     */
    public boolean unlock(String key, String value) {
        RLock fairLock = redissonClient.getFairLock(key + ":" +  value);
        try {
            //如果这里抛异常，后续锁无法释放
            if (fairLock.isLocked()) {
                fairLock.unlock();
                logger.info("release lock success");

                return true;
            }
        } catch (Throwable e) {
            logger.error("release lock occurred an exception", e);
        }

        return false;
    }
}

2，当redis为集群模式时，即springboot配置文件为这种cluster配置时，此时用redisson会出现错误。

redis:
      cluster:
        nodes: 10.200.56.89:6379,10.200.56.89:6380,10.200.56.89:6381,10.200.56.93:6379,10.200.56.93:6380,10.200.56.93:6381

需要增加配置文件：RedissonConfiguration

import lombok.extern.slf4j.Slf4j;
import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.ClusterServersConfig;
import org.redisson.config.Config;
import org.redisson.config.SingleServerConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.data.redis.RedisProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

@Slf4j
@Configuration
public class RedissonConfiguration {

    @Autowired
    private RedisProperties redisProperties;
    /**
     * 初始化RedissonClient客户端
     * 注意：
     * 此实例集群为3节点，各节点1主1从
     * 集群模式,集群节点的地址须使用“redis://”前缀，否则将会报错。
     *
     * @return {@link RedissonClient}
     */
    @Bean
    public RedissonClient getRedissonClient() {
        Config config = new Config();
        if (redisProperties.getCluster() != null) {
            //集群模式配置
            List<String> nodes = redisProperties.getCluster().getNodes();

            List<String> clusterNodes = new ArrayList<>();
            for (int i = 0; i < nodes.size(); i++) {
                clusterNodes.add("redis://" + nodes.get(i));
            }
            ClusterServersConfig clusterServersConfig = config.useClusterServers()
                    .addNodeAddress(clusterNodes.toArray(new String[clusterNodes.size()]));

            if (!StringUtils.isEmpty(redisProperties.getPassword())) {
                clusterServersConfig.setPassword(redisProperties.getPassword());
            }
        } else {
            //单节点配置
            String address = "redis://" + redisProperties.getHost() + ":" + redisProperties.getPort();
            SingleServerConfig serverConfig = config.useSingleServer();
            serverConfig.setAddress(address);
            if (!StringUtils.isEmpty(redisProperties.getPassword())) {
                serverConfig.setPassword(redisProperties.getPassword());
            }
            serverConfig.setDatabase(redisProperties.getDatabase());
        }
        //看门狗的锁续期时间，默认30000ms，这里配置成15000ms
        config.setLockWatchdogTimeout(15000);
        return Redisson.create(config);
    }
}

注：其中部分代码有参考其他博文的地方，源地址已忘记，侵删，不好意思，谢谢。

如有错误的地方望指正，谢谢。