使用Redis+SpringBoot實現定時任務測試

Redis實現定時任務是基於對RedisKey值的監控

具體代碼實現：

代碼GitHub地址：https://github.com/Tom-shushu/Project

• 建一個SpringBoot項目
• 引入依賴

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>redistask</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>redistask</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

• 配置文件

spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.timeout=10000

• 新建一個配置類

package com.zhouhong.redistask.redistaskconfig;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;

/**
 * description: Redis配置類
 * @author: zhouhong
 * @version: V1.0.0
 * @date: 2021年3月19日 上午10:58:24
 */
@Configuration
public class RedisTaskConfig {
    @Bean
    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {

        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        return container;
    }
}

• 新建Controller，設置不同過期時間的Key值，注意這里key值最好使用當前的業務標識做前綴，不然可能出現key重復的現象。

package com.zhouhong.redistask.redistaskcontroller;

import java.util.Date;
import java.util.concurrent.TimeUnit;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

/**
 * description: 測試Redis定時Controller類
 * @author: zhouhong
 * @version: V1.0.0
 * @date: 2021年3月19日 上午10:59:21
 */

@RestController
public class RedisTaskController {

    @Autowired
    private RedisTemplate< String, String> template;
    Logger logger = LogManager.getLogger(LogManager.ROOT_LOGGER_NAME);
    /**
     * 設置定時key，這里key最好使用業務前綴，防止名字相同
     * @return
     */
    @RequestMapping(value =  "putkeys", method = RequestMethod.POST)
    public String putRedisTaskKeys() {
        Date date = new Date();
        logger.info("業務開始時間：" + date);
        String key10S = "business1"+"|"+"key10S"+"|"+"其他業務中需要使用到的參數";
        String key20S = "business1"+"|"+"key20S"+"|"+"其他業務中需要使用到的參數";
        template.opsForValue().set(key10S, "values", 10, TimeUnit.SECONDS);
        template.opsForValue().set(key20S, "values", 20, TimeUnit.SECONDS);
        return "RedisKey過期鍵設置成功";
    }
    
}

• 新建Service用來監控過期Key，並且針對不同時間做不同的業務

package com.zhouhong.redistask.service;

import java.util.Date;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.listener.KeyExpirationEventMessageListener;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
/**
 * description: RedisKey鍵監聽以及業務邏輯處理
 * @author: zhouhong
 * @version: V1.0.0
 * @date: 2021年3月19日 上午10:58:52
 */
@Service
@Component
public class RedisTaskService extends KeyExpirationEventMessageListener {

    Logger logger = LogManager.getLogger(LogManager.ROOT_LOGGER_NAME);
    /**
     * @param listenerContainer
     */
    public RedisTaskService(RedisMessageListenerContainer listenerContainer) {
        super(listenerContainer);
    }
    @Override
    public void onMessage(Message message, byte[] pattern) {
        String expiredKey = message.toString();    
        // 將拿到的過期鍵使用之前拼接時的特殊符號分割成字符數組
        String[] expiredKeyArr = expiredKey.split("\\|");
        String businessSign = expiredKeyArr[0].toString();
        String expiredTimeSign = expiredKeyArr[1].toString();
        String othersParm = expiredKeyArr[2].toString();
        
        logger.info(businessSign + expiredTimeSign + othersParm);
        Date date = new Date();
        // 只有本業務才執行以下操作
        if (businessSign.equals("business1")) {
            if (expiredTimeSign.equals("key10S")) {
                // 定時十秒鍾后業務處理
                logger.info("十秒鍾時的時間："+ date);
                logger.info("定時任務10秒鍾已到，下面處理相關業務邏輯代碼！！！");
                logger.info("10秒鍾后的業務邏輯代碼，其他業務參數" + othersParm);
            } else if (expiredTimeSign.equals("key20S")) {
                // 定時十秒鍾后業務處理
                logger.info("二十秒鍾時的時間："+ date);
                logger.info("定時任務20秒鍾已到，下面處理相關業務邏輯代碼！！！");
                logger.info("20秒鍾后的業務邏輯代碼，其他業務參數" + othersParm);
            }
        } else {
            logger.error("非business1業務不做處理");
        }
    }
}

• 演示：

定時成功！！