使用spring+quartz配置多个定时任务

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:

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 isjava.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...

1. <properties>
2. <springframework.version>3.0.6.RELEASE</springframework.version>
3. </properties>
4. <dependencies>
5. <dependency>
6. <groupId>javax.servlet</groupId>
7. <artifactId>servlet-api</artifactId>
8. <version>2.5</version>
9. <scope>provided</scope>
10. </dependency>
11. <dependency>
12. <groupId>org.springframework</groupId>
13. <artifactId>spring-context</artifactId>
14. <version>${springframework.version}</version>
15. </dependency>
16. <dependency>
17. <groupId>org.springframework</groupId>
18. <artifactId>spring-context-support</artifactId>
19. <version>${springframework.version}</version>
20. </dependency>
21. <dependency>
22. <groupId>org.springframework</groupId>
23. <artifactId>spring-tx</artifactId>
24. <version>${springframework.version}</version>
25. </dependency>
26. <dependency>
27. <groupId>org.springframework</groupId>
28. <artifactId>spring-web</artifactId>
29. <version>${springframework.version}</version>
30. </dependency>
31. <dependency>
32. <groupId>org.quartz-scheduler</groupId>
33. <artifactId>quartz</artifactId>
34. <version>1.8.6</version>
35. </dependency>
36. </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

1. package com.quartz.demo;
2. import java.util.Date;
3. public class Job1Demo {
4. public void sayHello() {
5. System.out.println(new Date() + " -> Hello, 我是任务 1");
6. }
7. }

1. package com.quartz.demo;
2. import java.util.Date;
3. public class Job2Demo {
4. public void sayHello() {
5. System.out.println(new Date() + " -> Hello, 我是任务 2");
6. }
7. }

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

1. <?xml version="1.0" encoding="UTF-8"?>
2. <beans xmlns="http://www.springframework.org/schema/beans"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
4. xmlns:context="http://www.springframework.org/schema/context"
5. xmlns:mvc="http://www.springframework.org/schema/mvc"
6. xsi:schemaLocation="http://www.springframework.org/schema/beans
7. http://www.springframework.org/schema/beans/spring-beans.xsd
8. http://www.springframework.org/schema/context
9. http://www.springframework.org/schema/context/spring-context.xsd
10. http://www.springframework.org/schema/mvc
11. http://www.springframework.org/schema/mvc/spring-mvc.xsd">
12. <!-- 任务1配置 -->
13. <bean name="job1" class="com.quartz.demo.Job1Demo"/>
14. <bean id="jobDetail_1" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
15. <!-- 执行的类 -->
16. <property name="targetObject">
17. <ref bean="job1" />
18. </property>
19. <!-- 类中的方法 -->
20. <property name="targetMethod">
21. <value>sayHello</value>
22. </property>
23. </bean>
24. <bean id="cronTrigger_1" class="org.springframework.scheduling.quartz.CronTriggerBean">
25. <property name="jobDetail">
26. <ref bean="jobDetail_1" />
27. </property>
28. <!-- 每一秒钟执行一次 -->
29. <property name="cronExpression">
30. <value>0/1 * * * * ?</value>
31. </property>
32. </bean>
33. <!-- 任务2配置 -->
34. <bean name="job2" class="com.quartz.demo.Job2Demo"/>
35. <bean id="jobDetail_2" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
36. <property name="targetObject">
37. <ref bean="job2" />
38. </property>
39. <property name="targetMethod">
40. <value>sayHello</value>
41. </property>
42. </bean>
43. <bean id="cronTrigger_2" class="org.springframework.scheduling.quartz.CronTriggerBean">
44. <property name="jobDetail">
45. <ref bean="jobDetail_2" />
46. </property>
47. <property name="cronExpression">
48. <value>0/1 * * * * ?</value>
49. </property>
50. </bean>
51. <!-- 总配置 -->
52. <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
53. <!-- 添加触发器 -->
54. <property name="triggers">
55. <list>
56. <ref bean="cronTrigger_1" />
57. <ref bean="cronTrigger_2" />
58. </list>
59. </property>
60. </bean>
61. </beans>

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

1. <!DOCTYPE web-app PUBLIC
2. "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
3. "http://java.sun.com/dtd/web-app_2_3.dtd" >
4. <web-app>
5. <display-name>Archetype Created Web Application</display-name>
6. <context-param>
7. <param-name>contextConfigLocation</param-name>
8. <param-value>
9. classpath:*.xml
10. </param-value>
11. </context-param>
12. <!-- Spring 容器启动监听器 -->
13. <listener>
14. <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
15. </listener>
16. </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

转自http://blog.csdn.net/pansanday/article/details/42466173