Spring与Quartz的整合实现定时任务调度

Maven的pom.xml的配置： 

<?xml version="1.0" encoding="UTF-8"?>  
<project xmlns="http://maven.apache.org/POM/4.0.0"  
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  
    <modelVersion>4.0.0</modelVersion>  
  
    <groupId>QtzTest</groupId>  
    <artifactId>QtzTest</artifactId>  
    <version>1.0</version>  
  
    <properties>  
        <springframework.version>3.0.5.RELEASE</springframework.version>  
    </properties>  
  
    <dependencies>  
        <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>1.8.5</version>  
        </dependency>  
    </dependencies>  
  
    <build>  
        <finalName>${project.artifactId}</finalName>  
        <plugins>  
            <plugin>  
                <groupId>org.mortbay.jetty</groupId>  
                <artifactId>jetty-maven-plugin</artifactId>  
                <version>7.5.4.v20111024</version>  
                <configuration>  
                    <scanIntervalSeconds>10</scanIntervalSeconds>  
                    <webApp>  
                        <contextPath>/${project.artifactId}</contextPath>  
                    </webApp>

                </configuration>  
            </plugin>  
        </plugins>  
    </build>  
</project>  

特别注意一点，与Spring3.1以下版本整合必须使用Quartz1，最初我拿2.1.3的，怎么搞都报错： 

Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.springframework.scheduling.quartz.CronTriggerBean] 

for bean with name 'mytrigger' defined in class path resource [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 

查看发现spring3.0.5中org.springframework.scheduling.quartz.CronTriggerBean继承了org.quartz.CronTrigger（public class CronTriggerBeanextends CronTrigger），

而在quartz2.1.3中org.quartz.CronTrigger是个接口（publicabstract interface CronTrigger extends Trigger），

而在quartz1.8.5及1.8.4中org.quartz.CronTrigger是个类（publicclass CronTrigger extends Trigger），从而造成无法在applicationContext中配置触发器。

这是spring3.1以下版本和quartz2版本不兼容的一个bug。（感谢tiren的回复，spring3.1以及以后版本支持quartz2） 

在Spring中使用Quartz有两种方式实现：

第一种是任务类继承QuartzJobBean，

第二种则是在配置文件里定义任务类和要执行的方法，类和方法仍然是普通类。

很显然，第二种方式远比第一种方式来的灵活。

第一种方式的JAVA代码：

package com.ncs.hj;  
  
import org.quartz.JobExecutionContext;  
import org.quartz.JobExecutionException;  
import org.springframework.scheduling.quartz.QuartzJobBean;  
  
public class SpringQtz extends QuartzJobBean{  
    private static int counter = 0;  
    protected void executeInternal(JobExecutionContext context) throws JobExecutionException {  
        System.out.println();  
        long ms = System.currentTimeMillis();  
        System.out.println("		" + new Date(ms));  
        System.out.println(ms);  
        System.out.println("(" + counter++ + ")");  
        String s = (String) context.getMergedJobDataMap().get("service");  
        System.out.println(s);  
        System.out.println();  
    }  
}  

第二种方式的JAVA代码： 

package com.ncs.hj;  
  
import org.quartz.JobExecutionContext;  
import org.quartz.JobExecutionException;  
import org.springframework.scheduling.quartz.QuartzJobBean;  
  
import java.util.Date;  
  
public class SpringQtz {  
    private static int counter = 0;  
    protected void execute()  {  
        long ms = System.currentTimeMillis();  
        System.out.println("		" + new Date(ms));  
        System.out.println("(" + counter++ + ")");  
    }  
}  

Spring的配置文件： 

<!------------ 配置调度程序quartz ，其中配置JobDetail有两种方式-------------->    
    <!--方式一：使用JobDetailBean，任务类必须实现Job接口 -->     
    <bean id="myjob" class="org.springframework.scheduling.quartz.JobDetailBean">    
     <property name="name" value="exampleJob"></property>    
     <property name="jobClass" value="com.ncs.hj.SpringQtz"></property>   
     <property name="jobDataAsMap">  
<map>  
    <entry key="service"><value>simple is the beat</value></entry>  
</map>  
;/property>  
    </bean>   
    <!--运行时请将方式一注释掉！ -->    
    <!-- 方式二：使用MethodInvokingJobDetailFactoryBean，任务类可以不实现Job接口，通过targetMethod指定调用方法-->    
    <!-- 定义目标bean和bean中的方法 -->  
    <bean id="SpringQtzJob" class="com.ncs.hj.SpringQtz"/>  
    <bean id="SpringQtzJobMethod" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">  
    <property name="targetObject">  
        <ref bean="SpringQtzJob"/>  
    </property>  
    <property name="targetMethod">  <!-- 要执行的方法名称 -->  
        <value>execute</value>  
    </property>  
</bean>  
  
<!-- ======================== 调度触发器 ======================== -->  
<bean id="CronTriggerBean" class="org.springframework.scheduling.quartz.CronTriggerBean">  
    <property name="jobDetail" ref="SpringQtzJobMethod"></property>  
    <property name="cronExpression" value="0/5 * * * * ?"></property>  
</bean>  
  
<!-- ======================== 调度工厂 ======================== -->  
<bean id="SpringJobSchedulerFactoryBean" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">  
    <property name="triggers">  
        <list>  
            <ref bean="CronTriggerBean"/>  
        </list>  
    </property>  
</bean>   

最后别忘了在web.xml里面配置Spring： 

<?xml version="1.0" encoding="UTF-8"?>  
<web-app xmlns="http://java.sun.com/xml/ns/javaee"  
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee  
          http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"  
         version="2.5">  
    <welcome-file-list>  
        <welcome-file>index.html</welcome-file>  
    </welcome-file-list>  
  
    <context-param>  
        <param-name>contextConfigLocation</param-name>  
        <param-value>/WEB-INF/spring-config.xml</param-value>  
    </context-param>  
  
    <listener>  
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
    </listener>  
</web-app> 

扩展：http://www.cnblogs.com/liaojie970/p/5913272.html