解决quartz的job无法注入spring对象

Quartz初始化是自己的JobContext，不同于Spring的ApplicationContext，所以无法直接注入，导致使用时产生空指针异常！

两种方法,都差不多:

1.一般情况下，quartz的job中使用autowired注解注入的对象为空，这时候我们就要使用spring-quartz提供的AdaptableJobFactory类。

自定义一个类:

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1. public class JobFactory extends AdaptableJobFactory {  
2.       
3.     @Autowired  
4.     private AutowireCapableBeanFactory capableBeanFactory;  
5.   
6.     @Override  
7.     protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception {  
8.         //调用父类的方法  
9.         Object jobInstance = super.createJobInstance(bundle);  
10.         //进行注入  
11.         capableBeanFactory.autowireBean(jobInstance);  
12.         return jobInstance;  
13.     }  
14.       
15. }  

然后在spring中配置:

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1. <!-- 定时任务的factorybean,配置其他config -->  
2.     <bean id="jobFactory" class="com.xiaoye.job.JobFactory"></bean>  
3.     <bean id="schedulerFactoryBean" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">  
4.         <property name="jobFactory" ref="jobFactory"></property>  
5.     </bean>  

这时候，我们在定义类继承job的时候，就可以使用autowired注入service对象了：

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1. public class Test1Job implements Job {  
2.     public final Logger log = Logger.getLogger(this.getClass());  
3.       
4.     @Autowired  
5.     private JobTaskService jobTaskService;  
6.       
7.     public void execute(JobExecutionContext context) throws JobExecutionException {  
8.         //更新上一次执行时间和下一次计划执行时间  
9.         Date nextProcessTime = context.getNextFireTime();  
10.         ScheduleJob job = (ScheduleJob) context.getJobDetail().getJobDataMap().get("scheduleJob");  
11.         job.setNextProcessTime(nextProcessTime);  
12.         jobTaskService.updateTaskByJobName(job);  
13.           
14.         //业务逻辑  
15.         System.out.println("12312312321:");  
16.     }  
17. }  

2.自定义JobFactory，通过spring的AutowireCapableBeanFactory进行注入

JobFactory:

package com.xiaoye.app.schedule;
import org.quartz.spi.TriggerFiredBundle;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory;

public class JobFactory extends org.springframework.scheduling.quartz.SpringBeanJobFactory {
	@Autowired
	private AutowireCapableBeanFactory beanFactory;
	/**
	 * 
	 * 这里覆盖了super的createJobInstance方法，对其创建出来的类再进行autowire。
	 * 
	 */
	@Override
	protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception {
		Object jobInstance = super.createJobInstance(bundle);
		beanFactory.autowireBean(jobInstance);
		return jobInstance;
	}
}

定时任务类:

package com.xiaoye.app.schedule;

import java.sql.SQLException;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.quartz.QuartzJobBean;
import com.xiaoye.app.service.IStudyService;

public class JobPlan extends QuartzJobBean {
	@Autowired
	private IStudyService studyService;
	@Override
	protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
		try {
			studyService.updateStudyScheduler();
		} catch (SQLException e) {
			e.printStackTrace();
		}
		
	}

}

application.xml

    注意jobFactory的配置

<!-- 配置定任务 -->
	<bean id="myJobDetail"
		class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
		<property name="jobClass" value="com.xiaoye.app.schedule.JobPlan"></property>
		<property name="durability" value="true"></property>
	</bean>
	<!-- 配置任务触发器,何时,什么频率 -->
	<bean id="myJobTrigger"
		class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
		<property name="jobDetail" ref="myJobDetail"></property>
		<property name="cronExpression" value="0 0 0 ? * MON"></property>
	</bean>
	<!-- 把配置好的定时任务与任务触发器整合到调度任务管理器中,统一管理 -->
	<bean id="startSchedulerDriver"
		class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
		<!-- 定时任务 -->
		<property name="jobDetails">
			<list>
				<ref bean="myJobDetail" />
			</list>
		</property>
		<!-- 任务触发器 -->
		<property name="triggers">
			<list>
				<ref bean="myJobTrigger" />
			</list>
		</property>
		<property name="jobFactory">
			<bean class="com.xiaoye.app.schedule.JobFactory"></bean>
		</property>
		<!-- 启动后延迟多久执行 -->
		<property name="startupDelay" value="5"></property>
	</bean>