Spring's task

Scheduled Tasks

Spring task, which can be likened to a lightweight quartz, is simple to use, requires no additional packages in addition to spring-related packages, and supports annotations and configuration files in two types

Demo

Use the simplest example here

XML mode

package com.lee.spring_test.task;import java.util.Date;publicclass TaskXml {    publicvoidxmlCronTask() {        System.out.println(new": 敌军还有30秒到达!");    }}

Applicationcontext-task.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"    Xmlns:task="Http://www.springframework.org/schema/task"    Xmlns:context="Http://www.springframework.org/schema/context"    xsi:schemalocation="Http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.2.xsd Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd/HTTP Www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd " >    <!--cronexpression configuration instructions, specific use and parameters please Baidu Google field allow the special characters allowed by the number of seconds 0-5 9,-*/minute 0-59,-*/hour 0-23,-*/Date 1-31,-*? /L W C month 1-12 or JAN-DEC,-*/week 1-7 or Sun-sat,-*? /L C # Year (optional) leave blank, 1970-2099,-*/-interval * wildcard?    You don't want to set that field below just a few expressions of the cron expression meaning "0 0 12 * *?" Trigger "0 15 10" At 12 o'clock noon every day?    * * "10:15 per day" 0 15 10 * *? " Trigger "0 15 10 * * * per day 10:15? * "Trigger every day 10:15" 0 15 10 * *?    2005 "0 * 14 * * For 2005 Year 10:15 Daily    Every day from 2 o'clock in the afternoon to 2:59 every minute trigger "0 0/5 14 *?"    Daily from 2 o'clock in the afternoon to 2:55 minutes, every 5 minutes trigger "0 0/5 14,18 * *?"    Every 5 minutes from 2 o'clock in the afternoon to 2:55 and 6 to 6:55 in each day "0 0-5 14 * *?" Daily from 14:00 to 14:05 "0 10,44 14 per minute"? 3 WED "March 14:10 and 14:44 triggers per Wednesday" 0 15 10? * MON-FRI "10:15 trigger--> per Monday, Tuesday, Wednesday, Thursday, Friday;     <bean id="XmlTask" class="Com.lee.spring_test.task.TaskXml "/ >    <task:scheduled-tasks>        <task:scheduled ref= "xmlTask" method="Xmlcrontask" cron="0/30 *              * * * *"/>    </task:scheduled-tasks></Beans>

Test.java

package com.lee.spring_test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;publicclass Test {    publicstaticvoidmain(String[] args) {        new ClassPathXmlApplicationContext("applicationContext.xml");    }}

Annotation method

package  com.lee.spring_ Test.task; import  java.util.Date; import  org.springframework.scheduling.annotation.Scheduled; import  org.springframework.stereotype.Component;  @Component  ( "task" ) public  class  taskannotation  {  @Scheduled  (cron= "0/30 * * * * *" ) 
    
     public  
     void  
     xmlcrontask  () {System.out.println (
     new  Date () + 
      ": the enemy has 30 seconds to Up! ");}} 
     

Applicationcontext-task.xml

...<context:component-scan base-package="com.lee.spring_test" /><task:annotation-driven/>...

Spring's task