Task scheduling (3): Quartz

1、Quartz

Quartz is an open source project in the field of Job Scheduling (task scheduling). It can be used alone or combined with JavaSE and EE. It is a task scheduling management system that can perform specific tasks within a specific time. If you want to use it in Java Quartz, you only need to import the Quartz jar package into the project.

Completely developed by Java, can be used to perform timing tasks

2. Modify beans.xml

<import resource="spring-quartz.xml"/>

3、spring-quartz.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        ">

	<bean id="startQuertz" lazy-init="false" autowire="no"
		class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
		<property name="triggers">
			<list>
				<ref bean="cronTrigger" />
			</list>
		</property>
	</bean>
	<!-- 2.trigger：触发器 -->
<bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
    <property name="jobDetail">
        <ref bean="jobdetail" />
    </property>
    <property name="cronExpression">
        <!-- cron表达式:在每天早上8点到晚上8点期间每1分钟触发一次 -->
        <!-- <value>0 0/1 8-20 * * ?</value> -->
        <!-- 每周6凌晨2点触发一次 -->
        <!-- <value> 0 0 2 0 0 6 *</value> -->
        <!-- cron表达式:每10秒触发一次 -->
        <value>0/10 * * * * ?</value>
    </property>
</bean>
	<!-- 3.jobdetail： 调度的任务的详情-->
<bean id="jobdetail"      class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
    <!-- 调用的类 -->
    <property name="targetObject" ref="quartzJob" />
    <!-- 调用类中的方法名称 -->
    <property name="targetMethod">
        <value>work</value>
    </property>
</bean>
	<!-- 4.job:真正执行的调度任务 -->
	<bean id="quartzJob" class="com.cc.service.impl.CalcCustLostService" />
</beans>

4、CalcCustLostService

package com.cc.service.impl;

import com.cc.entity.Orders;
import com.cc.mapper.OrdersMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class CalcCustLostService {
    
    
    private Logger log = LoggerFactory.getLogger(CalcCustLostService.class);
    @Autowired
    private OrdersMapper ordersMapper;
    
    public void work() {
    
    

        System.out.println("我是定时任务.....");
    }
}

The next chapter: Task scheduling (two): Spring&SpringBoot task scheduling tool/cron expression