springboot集成Redisson做延迟队列、重试队列（解决项目重新启动并不会消费之前队列里的消息的问题）

maven配置：

        <dependency>
            <groupId>org.redisson</groupId>
            <artifactId>redisson-spring-boot-starter</artifactId>
            <version>3.16.6</version>
        </dependency>

springboot配置文件：

spring:
    # redis 配置
    redis:
        # 地址
        host: localhost
        # 端口，默认为6379
        port: 6379
        # 数据库索引
        database: 0
        # 密码
        password:

延迟队列service：

import com.ruoyi.unionpay.service.DelayQueueListenerService;
import org.redisson.api.RBlockingQueue;
import org.redisson.api.RDelayedQueue;
import org.redisson.api.RedissonClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.CommandLineRunner;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * 延迟队列、重试队列
 */
@Service
public class DelayQueueListenerServiceImpl implements DelayQueueListenerService, CommandLineRunner {

    private static final Logger log = LoggerFactory.getLogger(DelayQueueListenerServiceImpl.class);

    //线程池
    @Resource
    private ThreadPoolTaskExecutor taskExecutor;
    //延迟参数
    @Resource
    private DelayQueueProperties delayQueueProperties;
    @Resource
    private RedissonClient redissonClient;

    @Override
    public void run(String... args) throws Exception {
        //启动监控管控状态线程
        taskExecutor.execute(this::RetryThread);
    }

    /**
     * 延迟重试队列
     */
    private void RetryThread() {
        RBlockingQueue<String> blockingFairQueue = redissonClient.getBlockingQueue("test");
        while (true) {
            //解决项目重新启动并不会消费之前队列里的消息
            RDelayedQueue<String> delayedQueue = redissonClient.getDelayedQueue(blockingFairQueue);
            try {
                String message= blockingFairQueue.take();
                log.debug("触发延迟队列：{}", message);
                String result = "ERROR";
                //返回状态为错误，进入重试延迟队列
                if (result.equals("ERROR")) {
                    log.debug("失败{}，继续进入延迟队列", result.toString());
                    delayedQueue.offer(message, delayQueueProperties.getDelay(), delayQueueProperties.getTimeUnit());
                }else {
                    log.debug("其他状态{}，不进入延迟队列", result.toString());
                }
                delayedQueue.destroy();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 创建延迟重试队列
     *
     * @param message
     * @return
     */
    @Override
    public boolean addDelayQueue(String message) {
        log.debug("添加延迟队列：{}",message);
        RBlockingQueue<String> blockingQueue = redissonClient.getBlockingQueue("test");
        RDelayedQueue<String> delayedQueue = redissonClient.getDelayedQueue(blockingQueue);
        delayedQueue.offer(message, delayQueueProperties.getDelay(), delayQueueProperties.getTimeUnit());
        delayedQueue.destroy();
        return true;
    }

}