Quartz定时任务与spring框架整合案例

浅浅的花香味﹌ 2022-12-06 01:06 209阅读 0赞

**Quartz简介**  
Quartz是Job scheduling（作业调度）领域的一个开源项目，Quartz既可以单独使用也可以跟spring框架整合使用，在实际开发中一般会使用后者。使用Quartz可以开发一个或者多个定时任务，每个定时任务可以单独指定执行的时间。  
**实现步骤**  
第一步：导入依赖

<dependency>
      <groupId>org.quartz-scheduler</groupId>
      <artifactId>quartz</artifactId>
      <version>2.2.1</version>
    </dependency>
    <dependency>
      <groupId>org.quartz-scheduler</groupId>
      <artifactId>quartz-jobs</artifactId>
      <version>2.2.1</version>
    </dependency>
    
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
        <version>5.0.2.RELEASE</version>
    </dependency>

**第二步：自定义Job任务**

/**
     * QuartzTest Hello world!
     * 任务类
     *
     */
    public class App 
    {
        //任务方法
        public void quartzFunction()
        {
            //执行的语句，我们就演示打印时间值
            System.out.println( "QuartzTest Hello World!"+new Date().toString() );
        }
    }

**第三步：提供Spring配置文件applicationContext-quartz.xml，配置自定义Job、任务描述、触发器、调度工厂等**

<?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:context="http://www.springframework.org/schema/context"
           xsi:schemaLocation="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.xsd">
        
    
        <context:component-scan base-package="com.gg"></context:component-scan>
        
       
        <bean id="quartzTask" class="com.gg.App"/>
    
        
        <bean id="jobDetail"
              class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
            
            <property name="targetObject" ref="quartzTask"/>
            
            <property name="targetMethod" value="quartzFunction"/>
        </bean>
    
        
        <bean id="TaskTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
            
            <property name="jobDetail" ref="jobDetail"/>
            
            <property name="cronExpression">
                <value>0/10 * * * * ?</value>
            </property>
        </bean>
    
        
        <bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
            
            <property name="triggers">
                <list>
                    <ref bean="TaskTrigger"/>
                </list>
            </property>
        </bean>
    </beans>

**第四步：web.xml文件配置监听**

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns="http://java.sun.com/xml/ns/javaee"
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
             id="WebApp_ID" version="3.0">
    
    
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:applicationContext-quartz.xml</param-value>
        </context-param>
    </web-app>

**第五步：开启工程，查看测试结果**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpZXJlbmJpamkyMQ_size_16_color_FFFFFF_t_70_pic_center]  
附：Cron表达式在线生成地址：  
[https://cron.qqe2.com/][https_cron.qqe2.com]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpZXJlbmJpamkyMQ_size_16_color_FFFFFF_t_70_pic_center 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpZXJlbmJpamkyMQ_size_16_color_FFFFFF_t_70_pic_center]: /images/20221123/92bb6b74bec54f9d9ee2894b9629a0d4.png
[https_cron.qqe2.com]: https://cron.qqe2.com/
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpZXJlbmJpamkyMQ_size_16_color_FFFFFF_t_70_pic_center 1]: /images/20221123/c55daacaeb694529a2ff59675bbb08ae.png