使@schedule支持多线程的配置类

package com.longshine.goverquartz.core.config;

import org.springframework.boot.autoconfigure.batch.BatchProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;
import org.springframework.util.CollectionUtils;

import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.concurrent.Executors;

/**
 * @description: 使@schedule支持多线程的配置类
 * @author: cc x
 * @create: 2020-12-08
 **/
@Configuration
public class ScheduleConfig implements SchedulingConfigurer {

    @Override
    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
        Method[] methods = BatchProperties.Job.class.getMethods();
        int defaultPoolSize = 3;//自定义默认线程池大小
        int corePoolSize = 0;
        if (!CollectionUtils.isEmpty(Arrays.asList(methods))) {
            for (Method method : methods) {
                Scheduled annotation = method.getAnnotation(Scheduled.class);//扫描方法上的注解
                if (annotation != null) {
                    corePoolSize++;//有多少个方法上边有注解就初始化线程池多少个线程数量
                }
            }
            if (defaultPoolSize > corePoolSize) {//当你需要的线程数量大于基础线程数量 就按基础的来
                corePoolSize = defaultPoolSize;
            }
            taskRegistrar.setScheduler(Executors.newScheduledThreadPool(corePoolSize));
        }
    }
}