spring Quartz

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("\t\t" + 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("\t\t" + 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>