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小編給大家分享一下基于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)信息的示例分析,相信大部分人都還不怎么了解,因此分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后大有收獲,下面讓我們一起去了解一下吧!
簡(jiǎn)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); } } }
springboot一種全新的編程規(guī)范,其設(shè)計(jì)目的是用來簡(jiǎn)化新Spring應(yīng)用的初始搭建以及開發(fā)過程,SpringBoot也是一個(gè)服務(wù)于框架的框架,服務(wù)范圍是簡(jiǎn)化配置文件。
以上是“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)信息的示例分析”這篇文章的所有內(nèi)容,感謝各位的閱讀!相信大家都有了一定的了解,希望分享的內(nèi)容對(duì)大家有所幫助,如果還想學(xué)習(xí)更多知識(shí),歡迎關(guān)注億速云行業(yè)資訊頻道!
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