石英定时任务-quartz

组件介绍:

1. JOB 全部任务的统称
2. JobDetail 任务的具体实现
3. Scheduler 调度器.管理全部的任务.在内部实时监控任务的执行时间
4. Trigger触发器. 当有任务需要执行时,它会创建一个线程调用jobDetail完成任务.

调用的顺序:

1. 将JOB的任务和具体的内容注入到调度器中.
2. 调度器内部会监控任务.如果任务的执行时间到了.则交给Trigger处理.
3. Trigger启动线程执行jobDetail.

依赖jar包

<!-- 定时任务 -->
        <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>2.2.1</version>
        </dependency>
        <!--定时任务需要依赖c3p0jar包  -->
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>

spring配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

    <!-- 定义任务bean -->
    <bean name="paymentOrderJobDetail" class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
        <!-- 指定具体的job类 -->
        <property name="jobClass" value="com.jt.order.job.PaymentOrderJob" />
        <!-- 指定job的名称 -->
        <property name="name" value="paymentOrder" />
        <!-- 指定job的分组 -->
        <property name="group" value="Order" />
        <!-- 必须设置为true，如果为false，当没有活动的触发器与之关联时会在调度器中删除该任务  -->
        <property name="durability" value="true"/>
        <!-- 指定spring容器的key，如果不设定在job中的jobmap中是获取不到spring容器的 -->
        <property name="applicationContextJobDataKey" value="applicationContext"/>
    </bean>
    
    <!-- 定义触发器 -->
    <bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
        <property name="jobDetail" ref="paymentOrderJobDetail" />
        <!-- 每一分钟执行一次 -->
        <property name="cronExpression" value="0 0/1 * * * ?" />
    </bean>
    
    <!-- 定义调度器 -->
    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="triggers">
            <list>
                <ref bean="cronTrigger" />
            </list>
        </property>
    </bean>

</beans>

XML万用转义字符

<![CDATA[]]

java类

注意：quartz每次创建线程就会创建一次此类，并且执行重写的方法。

public class PaymentOrderJob extends QuartzJobBean{
    /**
     * 1、从上下文中获取spring容器
     * 2、从spring容器中获取 orderMapper对象
     * 3、执行mapper操作将超时订单状态设置为6：已取消(未付款订单，超时取消)
     */
    @Override
    protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
        //获取spring容器
        ApplicationContext ac = (ApplicationContext) context.getJobDetail().getJobDataMap().get("applicationContext");
        //获取mapper对象
        OrderMapper  orderMapper = ac.getBean(OrderMapper.class);
        //设置超时订单状态
        Date agoDate = new DateTime().minusDays(2).toDate();
        System.out.println(agoDate);
        orderMapper.updateStatus(agoDate);
    }