SpringBoot整合分布式锁redisson的示例代码

<!-- 用redisson作为所有分布式锁，分布式对象等功能框架-->
    <dependency>
        <groupId>org.redisson</groupId>
        <artifactId>redisson</artifactId>
        <version>3.12.5</version>
    </dependency>

package com.xuechengpluscommon.config;
 
import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.Config;
import org.redisson.config.SingleServerConfig;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
 
/**
 * @description Redisson 配置类
 */
@Configuration
public class MyRedissonConfig {
 
    @Value(value = "${spring.redis.host}")
    private String host;
    @Value(value = "${spring.redis.port}")
    private int port;
    @Value(value = "${spring.redis.database}")
    private int database;
//    @Value(value = "${spring.redis.password}")
//    private String password;
 
    /**
     * 单Redis节点模式配置方法
     * 其他配置參數，看:
     * <a href = "https://github.com/redisson/redisson/wiki/2.-%E9%85%8D%E7%BD%AE%E6%96%B9%E6%B3%95#26-%E5%8D%95redis%E8%8A%82%E7%82%B9%E6%A8%A1%E5%BC%8F">
     * 单Redis节点模式配置方法
     * </a>
     *
     * @return {@link RedissonClient}
     */
    @Bean(destroyMethod = "shutdown")
    RedissonClient redisson() {
        Config config = new Config();
        //Redis多节点
        // config.useClusterServers()
        //     .addNodeAddress("redis://127.0.0.1:6379", "redis://127.0.0.1:7001");
        //Redis单节点
        SingleServerConfig singleServerConfig = config.useSingleServer();
        //可以用"rediss://"来启用SSL连接
        String address = "redis://" + host + ":" + port;
        singleServerConfig.setAddress(address);
        //设置 数据库编号
        singleServerConfig.setDatabase(database);
//        singleServerConfig.setPassword(password);
        //连接池大小:默认值：64
        // singleServerConfig.setConnectionPoolSize()
        return Redisson.create(config);
    }
 
}

redis:
    database: 0
    host: ip地址
    port: 6379

@Autowired
private RedissonClient redisson;

@Test
void contextLoads1() {
    RQueue<String> queue = redisson.getQueue("RedissonQueue");
    queue.add("hello");
    System.out.println(queue);
}

@Test
void contextLoads2() {
    RQueue<String> queue = redisson.getQueue("RedissonQueue");
    String remove = queue.remove();
    System.out.println(remove);
}

public R redisTest1() throws InterruptedException {
        //首先从redis查询数据
        Orders redisOrder;
        redisOrder=(Orders) redisTemplate.opsForValue().get("redisTest");
        //如果存在redis则返回
        if(ObjectUtils.isNotEmpty(redisOrder)){
            return R.ok(redisOrder);
            //如果不存在则从数据库查询
        }else {
            //首先获取分布式锁
            RLock lock = redissonClient.getLock("redisTestDogWatch");
            //上锁
            lock.lock();
 
            //获取锁之后进行查询
            try {
                redisOrder = (Orders) redisTemplate.opsForValue().get("redisTest");
                if (ObjectUtils.isNotEmpty(redisOrder)) {
                    return R.ok(redisOrder);
                }
                //数据库查询
                redisOrder= ordersService.getById(1577177773194113014L);
                redisTemplate.opsForValue().set("redisTest", redisOrder );
                System.out.println("[从数据库中查询]");
 
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                //删除锁
                lock.unlock();
            }
            return R.ok(redisOrder);
        }
    }

//上锁
lock.lock();
Thread.sleep(35000);