SpringBoot集成redisson实现延时队列教程_Java

1、先给项目导入redisson依赖

 		<dependency>
            <groupid>org.redisson</groupid>
            <artifactid>redisson-spring-boot-starter</artifactid>
            <version>3.15.4</version>
        </dependency>

2、配置redis

3、创建 redissonconfig 配置

4、封装 redis 延迟队列工具类

import lombok.extern.slf4j.slf4j;
import org.redisson.api.rblockingdeque;
import org.redisson.api.rdelayedqueue;
import org.redisson.api.redissonclient;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.stereotype.component;

import java.util.map;
import java.util.concurrent.timeunit;

/**
 * @author bigboss
 */
@slf4j
@component
public class redisdelayqueueutil {

    @autowired
    private redissonclient redissonclient;

    /**
     * 添加延迟队列
     *
     * @param value     队列值
     * @param delay     延迟时间
     * @param timeunit  时间单位
     * @param queuecode 队列键
     * @param <t>
     */
    public <t> void adddelayqueue(t value, long delay, timeunit timeunit, string queuecode) {
        try {
            rblockingdeque<object> blockingdeque = redissonclient.getblockingdeque(queuecode);
            rdelayedqueue<object> delayedqueue = redissonclient.getdelayedqueue(blockingdeque);
            //删除之前进来的id值
            delayedqueue.remove(value);
            delayedqueue.offer(value, delay, timeunit);
            log.info("(添加延时队列成功) 队列键：{}，队列值：{}，延迟时间：{}", queuecode, value, timeunit.toseconds(delay) + "秒");
        } catch (exception e) {
            log.error("(添加延时队列失败) {}", e.getmessage());
            throw new runtimeexception("(添加延时队列失败)");
        }
    }

    /**
     * 获取延迟队列
     *
     * @param queuecode
     * @param <t>
     * @return
     * @throws interruptedexception
     */
    public <t> t getdelayqueue(string queuecode) throws interruptedexception {
        rblockingdeque<map> blockingdeque = redissonclient.getblockingdeque(queuecode);
        t value = (t) blockingdeque.take();
        return value;
    }


    /**
     * 删除延迟队列
     *
     * @param queuecode
     * @param <t>
     * @return
     */
    public <t> t removedelayqueue(t value, string queuecode) {
        rblockingdeque<object> blockingdeque = redissonclient.getblockingdeque(queuecode);
        rdelayedqueue<object> delayedqueue = redissonclient.getdelayedqueue(blockingdeque);
        delayedqueue.remove(value);
        return value;
    }
}

5、创建延迟队列业务枚举

import lombok.allargsconstructor;
import lombok.getter;
import lombok.noargsconstructor;

/**
 * @author: bigboss369
 * @created: 2022/8/11/011
 */
@getter
@noargsconstructor
@allargsconstructor
public enum  redisdelayqueueenum {
    pengyuyan("pengyuyan","心跳", "pengyuyan");
    /**
     * 延迟队列 redis key
     */
    private string code;

    /**
     * 中文描述
     */
    private string name;

    /**
     * 延迟队列具体业务实现的 bean
     * 可通过 spring 的上下文获取
     */
    private string beanid;
}

6、定义延迟队列执行器

/**
 * @author: bigboss369
 * @created: 2022/8/11/011
 */
public interface redisdelayqueuehandle<t> {

    void execute(t t);

}

7、创建枚举中定义的bean，并实现延迟队列执行器

import com.a.service.redisdelayqueuehandle;
import lombok.extern.slf4j.slf4j;
import org.springframework.stereotype.component;

import java.util.map;

@component(value = "pengyuyan")
@slf4j
public class pengyuyan implements redisdelayqueuehandle<map> {
    @override
    public void execute(map map) {
        log.info("收到心跳延迟消息map:" + map);
    }
}

8、创建延迟队列消费线程，项目启动完成后开启

import com.a.service.redisdelayqueuehandle;
import com.a.util.redisdelayqueueutil;
import lombok.extern.slf4j.slf4j;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.boot.commandlinerunner;
import org.springframework.stereotype.component;

/**
 * @author bigboss
 */
@slf4j
@component
public class redisdelayqueuerunner implements commandlinerunner {

    @autowired
    private redisdelayqueueutil redisdelayqueueutil;

    @override
    public void run(string... args) {
        redisdelayqueueenum[] queueenums = redisdelayqueueenum.values();
        for (redisdelayqueueenum queueenum : queueenums) {
            new thread(() -> {
                try {
                    while (true) {
                        object value = redisdelayqueueutil.getdelayqueue(queueenum.getcode());
                        log.debug("----value-->" + value);
                        redisdelayqueuehandle redisdelayqueuehandle = springutil.getbean(queueenum.getbeanid());
                        redisdelayqueuehandle.execute(value);
                    }
                } catch (interruptedexception e) {
                    log.error("(redis延迟队列异常中断) {}", e.getmessage());
                }
            }).start();
        }
        log.info("(redis延迟队列启动成功)");
    }
}