五)Spring + Quartz 复杂业务的两个问题:获取Spring上下文 和 自动注入服务类

配置如下:

<?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"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.1.xsd
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-4.1.xsd">
<context:component-scan base-package="cn.zno" />
<task:executor id="threadPoolTaskExecutor" pool-size="1" /> <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="jobFactory">
<bean class="org.springframework.scheduling.quartz.SpringBeanJobFactory" />
</property>
<property name="applicationContextSchedulerContextKey" value="applicationContextKey" />
<property name="startupDelay" value="0" />
<property name="overwriteExistingJobs" value="true" />
<property name="exposeSchedulerInRepository" value="true" />
<property name="taskExecutor" ref="threadPoolTaskExecutor" />
<property name="triggers">
<list>
<ref bean="cronTrigger_1" />
</list>
</property>
</bean> <bean id="cronTrigger_1"
class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
<property name="jobDetail" ref="jobDetail_1" />
<property name="cronExpression" value="* * * * * ?" />
</bean>
<bean id="jobDetail_1"
class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
<property name="jobClass" value="cn.zno.job.Breathe" />
</bean>
<bean id="breath" class="cn.zno.job.Breathe" />
</beans>

为什么要配置这个

<property name="applicationContextSchedulerContextKey" value="applicationContextKey" />

因为可以通过这个key取到Spring上下文。

配置1存在的问题:不能自动注入。

package cn.zno.job;

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.context.ApplicationContext; import cn.zno.service.AService; public class Breathe implements Job { // @Autowired
// private AService aService; @Override
public void execute(JobExecutionContext context)
throws JobExecutionException {
try {
// aService.Show();
ApplicationContext ctx = (ApplicationContext)context.getScheduler().getContext().get("applicationContextKey");
AService aService = ctx.getBean(AService.class);
aService.Show();
} catch (Exception e) {
e.printStackTrace();
} } }

配置一改:解决自动注入问题

change

        <property name="jobFactory">
<bean class="org.springframework.scheduling.quartz.SpringBeanJobFactory" />
</property>

to

        <property name="jobFactory">
<bean class="cn.zno.common.SpringBeanJobFactory" />
</property>

cn.zno.common.SpringBeanJobFactory

package cn.zno.common;

import org.quartz.spi.TriggerFiredBundle;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware; public class SpringBeanJobFactory extends
org.springframework.scheduling.quartz.SpringBeanJobFactory implements
ApplicationContextAware { private ApplicationContext applicationContext; @Override
public void setApplicationContext(ApplicationContext applicationContext)
throws BeansException {
this.applicationContext = applicationContext; } @Override
protected Object createJobInstance(TriggerFiredBundle bundle)throws Exception {
Object jobInstance = super.createJobInstance(bundle);
applicationContext.getAutowireCapableBeanFactory().autowireBean(jobInstance);
return jobInstance;
}
}

另一种实现方式为:

package cn.zno.common;

import org.quartz.spi.TriggerFiredBundle;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory; public class SpringBeanJobFactory extends
org.springframework.scheduling.quartz.SpringBeanJobFactory { @Autowired
private AutowireCapableBeanFactory autowireCapableBeanFactory; @Override
protected Object createJobInstance(TriggerFiredBundle bundle)throws Exception {
Object jobInstance = super.createJobInstance(bundle);
autowireCapableBeanFactory.autowireBean(jobInstance);
return jobInstance;
}
}
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