Redission分布式锁

一、引jar包

 <!--redisson-->
        <dependency>
            <groupId>org.redisson</groupId>
            <artifactId>redisson-spring-boot-starter</artifactId>
            <version>3.10.6</version>
        </dependency>

二、写配置

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

@Configuration
public class RedissonConfig {
    @Bean
    public Redisson redisson(){
        Config config = new Config();
        config.useSingleServer()
                .setAddress("redis://192.168.72.111:6379")
                .setDatabase(0);
        return (Redisson) Redisson.create(config);
    }
}

三、测试使用

 @Autowired
    private Redisson redisson;

    @GetMapping("/hello")
    public String r(){
        RLock lock = null;
        try {
            //获取锁，如果锁被占用，会一直循环查看锁可以被使用
             lock = redisson.getLock("primary key");
            //设置超时时间
             lock.lock(20, TimeUnit.SECONDS);
            System.out.println("加锁");
            /**
             * 业务代码
             */
        }finally {
            lock.unlock();
            System.out.println("释放锁！");
        }

        return "测试成功！";
    }