基于Springboot執(zhí)行多個(gè)定時(shí)任務(wù)并動(dòng)態(tài)獲取定時(shí)任務(wù)信息

更新時(shí)間：2019年04月24日 15:36:01 作者：CarolLXW

這篇文章主要為大家詳細(xì)介紹了基于Springboot執(zhí)行多個(gè)定時(shí)任務(wù)并動(dòng)態(tài)獲取定時(shí)任務(wù)信息，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

簡介

因?yàn)橐恍I(yè)務(wù)的需要所有需要使用多個(gè)不同的定時(shí)任務(wù)，并且每個(gè)定時(shí)任務(wù)中的定時(shí)信息是通過數(shù)據(jù)庫動(dòng)態(tài)獲取的。下面是我寫的使用了Springboot+Mybatis寫的多任務(wù)定時(shí)器。

主要實(shí)現(xiàn)了以下功能：

1、同時(shí)使用多個(gè)定時(shí)任務(wù)
2、動(dòng)態(tài)獲取定時(shí)任務(wù)的定時(shí)信息

說明

因?yàn)槲覀冃枰獜臄?shù)據(jù)庫動(dòng)態(tài)的獲取定時(shí)任務(wù)的信息，所以我們需要集成 SchedulingConfigurer 然后重寫 configureTasks 方法即可，調(diào)用不同的定時(shí)任務(wù)只需要通過service方法調(diào)用不用的實(shí)現(xiàn)返回對(duì)應(yīng)的定時(shí)任務(wù)信息。有多少個(gè)定時(shí)任務(wù)就重寫多少個(gè)該方法（最好創(chuàng)建不同的類）。然后直接在application中啟動(dòng)即可。

SpringApplication-啟動(dòng)類

package test;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.transaction.annotation.EnableTransactionManagement;


@SpringBootApplication
@EnableTransactionManagement
@EnableScheduling
@ComponentScan(value = {"test.*"})
@MapperScan("test.mapper.*")
public class TomcatlogApplication {

  public static void main(String[] args) {
    SpringApplication.run(TomcatlogApplication.class, args);
  }

}

動(dòng)態(tài)獲取定時(shí)任務(wù)信息

mapper

import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

import java.util.List;

/*
 * @version 1.0 created by liuxuewen on 2018/8/21 14:39
 */
public interface TomcatlogMapper {
  @Select("SELECT * FROM scheduledtask s WHERE s.`enable` = 1")
  String queryScheduledTask();
}

service

package test.service;
import java.util.ArrayList;
import java.util.List;

/*
 * @version 1.0 created by liuxuewen on 2018/8/21 14:44
 */
public interface TomcatlogService {
  List<ScheduledtaskEntity> queryScheduledTask();
}

service impl

import test.mapper.tomcatlog.TomcatlogMapper;
import test.service.TomcatlogService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;

/*
 * @version 1.0 created by liuxuewen on 2018/8/21 14:44
 */
@Service
public class TomcatlogServiceImpl implements TomcatlogService {
  private static final Logger LOGGER = LoggerFactory.getLogger(TomcatlogServiceImpl.class);

  @Autowired
  TomcatlogMapper tomcatlogMapper;

  @Override
  public String queryScheduledTask() {
    try {
      String res = tomcatlogMapper.queryScheduledTask();
      return res;
    } catch (Exception e) {
      LOGGER.info(e);
    }
    return null;
}

定時(shí)任務(wù)

package test.schedultask;

import test.controller.MainController;
import test.service.ControllerService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;
import org.springframework.scheduling.support.CronTrigger;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

/*
 * @version 1.0 created by liuxuewen on 2018/8/27 9:25
 */
@Component
public class ElasticsearchSchedultaskController implements SchedulingConfigurer {
  private static final Logger LOGGER = LoggerFactory.getLogger(ElasticsearchSchedultaskController.class);

  @Autowired
  private ControllerService controllerService;

  @Autowired
  private MainController mainController;

  @Override
  public void configureTasks(ScheduledTaskRegistrar scheduledTaskRegistrar) {
    try {
      scheduledTaskRegistrar.addTriggerTask(
          //1.添加任務(wù)內(nèi)容(Runnable)，可以為方法
          () -> Sytem.out.println("定時(shí)任務(wù)1"),
          //2.設(shè)置執(zhí)行周期(Trigger)
          triggerContext -> {
            //2.1 從數(shù)據(jù)庫獲取執(zhí)行周期，在這里調(diào)用不同的方法返回不同的定時(shí)任務(wù)信息
            String cron = controllerService.getSchedultaskForElasticsearch();
            System.out.println("controllerService.getSchedultaskForElasticsearch()");
            System.out.println(cron);
            //2.2 合法性校驗(yàn).
            if (StringUtils.isEmpty(cron)) {
              // Omitted Code ..
              LOGGER.error("計(jì)劃任務(wù)為空");
            }
            //2.3 返回執(zhí)行周期(Date)
            return new CronTrigger(cron).nextExecutionTime(triggerContext);
          }
      );
    }catch (Exception e){
      String ex = exceptionLoggingUtil.exceptionPrint(e);
      LOGGER.info(ex);
    }

  }
}

以上就是本文的全部內(nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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