Quartz 配置

配置

以下配置为Application-Context中引用的配置。

<?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:task="http://www.springframework.org/schema/task"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd

        http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd"
       default-lazy-init="true">

    <description>SpringTask配置</description>

    <bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>

    <task:annotation-driven/>

    <bean id="reminderEmailJob" class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
        <property name="jobClass" value="com.sapphire.task.ReminderEmailTask"></property>
        <property name="durability" value="true"/>
    </bean>

    <bean id="reminderCronTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
        <property name="jobDetail" ref="reminderEmailJob"></property>
        <property name="cronExpression" value="0/5 * * * * ?"></property>
    </bean>

    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="triggers">
            <list>
                <ref bean="reminderCronTrigger"/>
            </list>
        </property>
        <property name="schedulerContextAsMap">
            <map>
                <!-- spring 管理的service需要放到这里，才能够注入成功 -->
                <description>schedulerContextAsMap</description>
                <entry key="userService" value-ref="userService"/>
            </map>
        </property>
    </bean>
</beans>

其中的配置包含几个部分，Job，Job中jobClass对应为自己写的task
该Job还需要配置对应的Trigger，Trigger中的是Cron表达式，
最后将其Trigger注册到SchedulerFactoryBean之中，这样就会自动执行的。

注入Service

quartz使用的不是web容器，所以无法加载到web容器之中的bean，所以需要以别的方式注入，也就是schedulerContextAsMap
其中可以将Service以map的形式注入，用以生效。
如上，代码就可以通过

@Override
protected void executeInternal(JobExecutionContext context)
      throws JobExecutionException {
   LOGGER.info("Execute reminder email task");
   UserService userService;
   try {
      userService =
            (UserService) context.getScheduler().getContext()
                  .get("userService");
   } catch (SchedulerException e) {
      throw new JobExecutionException(e);
   }
   User user = userService.getUserById(1);
   LOGGER.info("User info : " + user.getUsername());
}

来访问了，该类继承于QuartzJobBean