基于Springboot执行多个定时任务并动态获取定时任务信息

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);
  }

}

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();
}

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();
}

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;
}

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.添加任务内容(Runnable)，可以为方法
          () -> Sytem.out.println("定时任务1"),
          //2.设置执行周期(Trigger)
          triggerContext -> {
            //2.1 从数据库获取执行周期，在这里调用不同的方法返回不同的定时任务信息
            String cron = controllerService.getSchedultaskForElasticsearch();
            System.out.println("controllerService.getSchedultaskForElasticsearch()");
            System.out.println(cron);
            //2.2 合法性校验.
            if (StringUtils.isEmpty(cron)) {
              // Omitted Code ..
              LOGGER.error("计划任务为空");
            }
            //2.3 返回执行周期(Date)
            return new CronTrigger(cron).nextExecutionTime(triggerContext);
          }
      );
    }catch (Exception e){
      String ex = exceptionLoggingUtil.exceptionPrint(e);
      LOGGER.info(ex);
    }

  }
}