SpringBoot基于数据库的定时任务统一管理的实现

定时任务1

import lombok.extern.slf4j.Slf4j;

/**
 * @author Created by niugang on 2019/12/24/15:29
 */
@Slf4j
public class TaskTest {

  public void task1() {
    log.info("反射调用测试[一]类");
  }
}

定时任务2

import lombok.extern.slf4j.Slf4j;

/**
 * @author Created by niugang on 2019/12/24/15:54
 */
@Slf4j
public class TaskTest2 {
  public void task2() {
    log.info("反射调用测试[二]类");
  }
}

配置类

import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.CronTask;
import org.springframework.scheduling.config.ScheduledTask;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;

/**
 * @author Created by niugang on 2019/12/24/15:19
 */
@Configuration
@EnableScheduling
@Slf4j
public class CompleteScheduleConfig implements SchedulingConfigurer {

  private static List<TaskRecord> taskRecordList = new ArrayList<>();

  /*
   *模拟数据库存储
   */
  static {
    TaskRecord taskRecord = new TaskRecord();
    taskRecord.setExecuteMehod("task1");
    taskRecord.setClassPath("com.example.demo.pojo.TaskTest");
    taskRecord.setCron("0/5 * * * * ?");
    taskRecordList.add(taskRecord);

    TaskRecord taskRecord2 = new TaskRecord();
    taskRecord2.setExecuteMehod("task2");
    taskRecord2.setClassPath("com.example.demo.pojo.TaskTest2");
    taskRecord2.setCron("0/10 * * * * ?");
    taskRecordList.add(taskRecord2);
  }

  @Override
  public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
    // taskRegistrar.addCronTask(() -> log.info("执行定时任务,{}", LocalDateTime.now()), "0/5 * * * * ?");
/*    taskRegistrar.addCronTask(new Runnable() {
      @Override
      public void run() {
        try {
          Class<?> aClass = Class.forName("com.example.demo.pojo.TaskTest");
          Object o = aClass.newInstance();
          Method[] declaredMethods = aClass.getDeclaredMethods();
          for (Method declaredMethod : declaredMethods) {
            declaredMethod.invoke(o);
            // log.info("方法名称:{}",declaredMethod.getName());
          }
        } catch (Exception e) {
          e.printStackTrace();
        }
      }
    }, "0/5 * * * * ?");*/

    for (TaskRecord taskRecord : taskRecordList) {
      String classPath = taskRecord.getClassPath();
      String cron = taskRecord.getCron();
      String executeMehod = taskRecord.getExecuteMehod();
      Runnable runnable = () -> {
        Class<?> aClass;
        try {
          aClass = Class.forName(classPath);
          Object o = aClass.newInstance();
          Method[] declaredMethods = aClass.getDeclaredMethods();
          for (Method declaredMethod : declaredMethods) {
            if (declaredMethod.getName().equals(executeMehod)) {
              /// log.info("方法名称:{}",declaredMethod.getName());
              declaredMethod.invoke(o);
            }
          }
        } catch (Exception e1) {
          e1.printStackTrace();
        }
      };
      CronTask cronTask = new CronTask(runnable, cron);
      ScheduledTask scheduledTask = taskRegistrar.scheduleCronTask(cronTask);
      //scheduledTask.cancel(); 取消定时任务

    }

  }

  @Data
  private static class TaskRecord {

    private String classPath;

    private String executeMehod;

    private String cron;

    //可以在增加一个type 执行其他类型的定时任务
  }
}

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