前言

• 如果不想套繁重的quartz的情況
• 如果想動(dòng)態(tài)加入定時(shí)任務(wù)
• 如果不同的task有不同的開(kāi)發(fā)人員負(fù)責(zé)，不能都在一個(gè)項(xiàng)目中
• 如果不想花費(fèi)太多的時(shí)間來(lái)處理
  滿足以上至少一條的同學(xué)可以繼續(xù)看了，如果想做集群調(diào)度的，請(qǐng)移步我覺(jué)得不錯(cuò)的一個(gè)架構(gòu): antares

項(xiàng)目架構(gòu)

• springboot
• hutool
• mybatisPlus

搭建配置

• maven增加依賴

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>4.0.0</version>
</dependency>

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus</artifactId>
    <version>倉(cāng)庫(kù)最高版本號(hào)</version>
</dependency>

其他mysql依賴忽略

• 啟動(dòng)類新增

    @Bean
    @Order(0)
    public Scheduler quartzTask() {
        Scheduler scheduler = new Scheduler();
        scheduler.setDaemon(true);
        scheduler.setMatchSecond(true);
        return scheduler;
    }

• 調(diào)度主類

@Configuration
@Order(1)
@Slf4j
public class QuartzJobs {


    @Autowired(required = false)
    private Scheduler scheduler;

    @Autowired(required = false)
    private QuartzDetailsService quartzDetailsService;


    /**
     * 每間隔5秒鐘從數(shù)據(jù)庫(kù)鐘查詢?nèi)蝿?wù)并添加到調(diào)度隊(duì)列中
     *
     * @throws MalformedURLException
     * @throws ClassNotFoundException
     * @throws IllegalAccessException
     * @throws InstantiationException
     */
    @Scheduled(fixedDelay = 30000)
    public void queueJobs() {

        //從task表中查詢新增加的任務(wù)信息
        List<QuartzDetails> jobDetails = quartzDetailsService.selectList(new EntityWrapper<QuartzDetails>().eq("job_enable", 1).eq("job_add_flag", 0));
        if (jobDetails != null && !jobDetails.isEmpty()) {
            jobDetails.forEach((QuartzDetails job) -> {
                try {
                    URL url = new URL("file:" + job.getJobPath());
                    URLClassLoader urlClassLoader = new URLClassLoader(new URL[]{url}, Thread.currentThread().getContextClassLoader());
                    Class<?> clazz = urlClassLoader.loadClass(job.getJobMain());
                    Runnable runnable = (Runnable) clazz.newInstance();
                    scheduler.schedule(job.getJobId(), job.getJobCorn(), runnable);
                    log.warn("新增jod : {} 成功", job.getJobId());
                    job.setJobAddFlag(1);
                    quartzDetailsService.update(job, new EntityWrapper<QuartzDetails>().eq("job_id", job.getJobId()));
                } catch (CronException cron) {
                    log.warn("該任務(wù)已添加過(guò),請(qǐng)勿重復(fù)添加調(diào)度task:{}", cron);
                } catch (IllegalAccessException | InstantiationException | ClassNotFoundException | MalformedURLException e) {
                    log.error("添加任務(wù)失敗:{}", e);
                }

            });
            if (!scheduler.isStarted()) {
                scheduler.start();
            }
        }


    }

    /**
     * 每次間隔30秒鐘檢測(cè)一次當(dāng)前調(diào)度是否存活
     */
    @Scheduled(fixedRate = 30000)
    public void removeQueueJobs() {
        //從task表中查詢需移除的任務(wù)信息
        List<QuartzDetails> jobDetails = quartzDetailsService.selectList(new EntityWrapper<QuartzDetails>().eq("job_enable", 0).eq("job_add_flag", 1));
        jobDetails.forEach(job -> {
            if (scheduler.isStarted()) {
                scheduler.deschedule(job.getJobId());
                log.warn("移除task任務(wù) : {} 成功", job.getJobId());
                job.setJobAddFlag(0);
                quartzDetailsService.update(job, new EntityWrapper<QuartzDetails>().eq("job_id", job.getJobId()));
            }
        });

    }

}

• 思路闡述
  從數(shù)據(jù)庫(kù)表中查詢已啟用但未增加到調(diào)度的任務(wù)
  新增后，將job_add_flag修改為已添加
  每隔30s查詢當(dāng)前已經(jīng)新增過(guò)調(diào)度，但是停用的任務(wù)移除

• db表展示

| juncai_quartz_details | CREATE TABLE `juncai_quartz_details` (
  `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '主鍵',
  `job_id` varchar(20) NOT NULL COMMENT '任務(wù)名稱',
  `job_path` varchar(200) NOT NULL COMMENT '任務(wù)地址(絕對(duì)路徑)',
  `job_main` varchar(100) NOT NULL COMMENT '執(zhí)行run路徑',
  `job_enable` tinyint(4) NOT NULL DEFAULT '1' COMMENT '默認(rèn)為1啟用 否則為暫停',
  `job_add_flag` tinyint(4) DEFAULT '0' COMMENT '是否添加到調(diào)度隊(duì)列標(biāo)識(shí) 0未添加 否則為添加',
  `job_corn` varchar(50) NOT NULL COMMENT '執(zhí)行表達(dá)式',
  `job_ip` varchar(20) DEFAULT NULL COMMENT '任務(wù)所在機(jī)器地址',
  `job_id_log` varchar(50) DEFAULT NULL COMMENT '任務(wù)日志名稱',
  `create_time` datetime DEFAULT NULL COMMENT '創(chuàng)建時(shí)間',
  `update_time` datetime DEFAULT NULL COMMENT '修改時(shí)間',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8              

• 具體調(diào)度任務(wù)代碼展示

@Slf4j
public class QueryZcmlcLoan implements Runnable{

    @Override
    public void run() {
        log.warn("開(kāi)始查詢.");
        System.out.println("hello world!");
        log.warn("查詢task結(jié)束.");
    }
}

如有疑問(wèn)或者問(wèn)題請(qǐng)留言，thanks