使用spring+quartz配置多个定时任务

╰半橙微兮° 2022-08-06 08:17 219阅读 0赞

Spring被用在了越来越多的项目中, quartz也被公认为是比较好用的定时器设置工具, 在这里通过一个demo说明如何使用spring和quartz配置多个定时任务.

环境: eclipse + maven + spring 3.0.6.RELEASE版本 + quartz 1.8.6版本

一. 准备工作

项目目录结构截图:

![20150106202522787][]![20150106203752602][]

需要引入的jar包, 这里是采用maven的dependency依赖; 如果没有使用maven, 可以对照着上面的jar包截图一一进行下载. 这里唯一需要注意的就是, 如果使用spring 3.1以下的版本, quartz就需要相应的2.0以下版本, 否则会导致 org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class \[org.springframework.scheduling.quartz.CronTriggerBean\] for bean with name 'cronTrigger\_1' defined in file \[E:\\workspace\\.metadata\\.plugins\\org.eclipse.wst.server.core\\tmp0\\wtpwebapps\\git-common\\WEB-INF\\classes\\applicationContext.xml\]: problem with class file or dependent class; nested exception is **java.lang.IncompatibleClassChangeError: class org.springframework.scheduling.quartz.CronTriggerBean has interface org.quartz.CronTrigger as super class** 错误.

后续: 后来使用了spring 4.0.5.RELEASE版本+quartz 2.2.1版本, 还是报出了以上错误, 将quartz降低为1.8.6版本后, 问题消失...

<properties>
    	<springframework.version>3.0.6.RELEASE</springframework.version>
    </properties>
    <dependencies>
    	<dependency>
    		<groupId>javax.servlet</groupId>
    		<artifactId>servlet-api</artifactId>
    		<version>2.5</version>
    		<scope>provided</scope>
    	</dependency>
    	<dependency>
    		<groupId>org.springframework</groupId>
    		<artifactId>spring-context</artifactId>
    		<version>${springframework.version}</version>
    	</dependency>
    	<dependency>
    		<groupId>org.springframework</groupId>
    		<artifactId>spring-context-support</artifactId>
    		<version>${springframework.version}</version>
    	</dependency>
    	<dependency>
    		<groupId>org.springframework</groupId>
    		<artifactId>spring-tx</artifactId>
    		<version>${springframework.version}</version>
    	</dependency>
    	<dependency>
    		<groupId>org.springframework</groupId>
    		<artifactId>spring-web</artifactId>
    		<version>${springframework.version}</version>
    	</dependency>
    	<dependency>
    		<groupId>org.quartz-scheduler</groupId>
    		<artifactId>quartz</artifactId>
    		<version>1.8.6</version>
    	</dependency>
    </dependencies>

二. 程序代码及配置代码

测试代码就简单的打印出一句话

package com.quartz.demo;
    
    import java.util.Date;
    
    public class Job1Demo {
    	public void sayHello() {
    		System.out.println(new Date() + " -> Hello, 我是任务 1");
    	}
    }

package com.quartz.demo;
    
    import java.util.Date;
    
    public class Job2Demo {
    	public void sayHello() {
    		System.out.println(new Date() + " -> Hello, 我是任务 2");
    	}
    }

Spring配置文件applicationContext.xml中配置了要注入的bean, 定时任务, 任务执行周期时间等

<?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:p="http://www.springframework.org/schema/p"
    	xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:mvc="http://www.springframework.org/schema/mvc"
    	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
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    	
    	<bean name="job1" class="com.quartz.demo.Job1Demo"/>
    	<bean id="jobDetail_1" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
    		
    		<property name="targetObject">
    			<ref bean="job1" />
    		</property>
    		
    		<property name="targetMethod">
    			<value>sayHello</value>
    		</property>
    	</bean>
    	<bean id="cronTrigger_1" class="org.springframework.scheduling.quartz.CronTriggerBean">
    		<property name="jobDetail">
    			<ref bean="jobDetail_1" />
    		</property>
    		
    		<property name="cronExpression">
    			<value>0/1 * * * * ?</value>
    		</property>
    	</bean>
    	
    	
    	<bean name="job2" class="com.quartz.demo.Job2Demo"/>
    	<bean id="jobDetail_2" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
    		<property name="targetObject">
    			<ref bean="job2" />
    		</property>
    		<property name="targetMethod">
    			<value>sayHello</value>
    		</property>
    	</bean>
    	<bean id="cronTrigger_2" class="org.springframework.scheduling.quartz.CronTriggerBean">
    		<property name="jobDetail">
    			<ref bean="jobDetail_2" />
    		</property>
    		<property name="cronExpression">
    			<value>0/1 * * * * ?</value>
    		</property>
    	</bean>
    	
    	
    	<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
    		
    		<property name="triggers">
    			<list>
    				<ref bean="cronTrigger_1" />
    				<ref bean="cronTrigger_2" />
    			</list>
    		</property>
    	</bean>
    </beans>

web.xml, 在spring容器启动时读取加载applicationContext.xml配置文件

<!DOCTYPE web-app PUBLIC
     "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
     "http://java.sun.com/dtd/web-app_2_3.dtd" >
    
    <web-app>
    	<display-name>Archetype Created Web Application</display-name>
    	<context-param>
    		<param-name>contextConfigLocation</param-name>
    		<param-value>
    			classpath:*.xml
    		</param-value>
    	</context-param>
    
    	
    	<listener>
    		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    	</listener>
    </web-app>

三. 执行结果

将web项目部署到tomcat等容器中, 启动后, 就可以看到定时器执行效果, 如下图所示

![20150106202529464][]

[20150106202522787]: https://img-blog.csdn.net/20150106202522787
[20150106203752602]: /images/20220806/3a498907f9bf42c6bfed77634af9723c.png
[20150106202529464]: /images/20220806/b9d7b0d70cf047498efc99fe520b060c.png