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Spring quartz定时任务service注入问题
今天想单元测试一下spring中的quartz定时任务,一顿折腾,到最后总是发现job类里注入的service为null。一开始还以为spring的配置问题,各种找原因,最后还是确定是没有注入。
就去网上搜搜吧。也找出来一些眉目。简单的理解这个原因是job是在quartz中实例化出来的,不受spring的管理。所以就导致注入不进去了。参考这个文章
http://www.tuicool.com/articles/Qjyamu
找着试试的态度,就按照文章里说的。new一个类
public class MyJobFactory extends AdaptableJobFactory { //这个对象Spring会帮我们自动注入进来,也属于Spring技术范畴. @Autowired private AutowireCapableBeanFactory capableBeanFactory; protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception { //调用父类的方法 Object jobInstance = super.createJobInstance(bundle); //进行注入,这属于Spring的技术,不清楚的可以查看Spring的API. capableBeanFactory.autowireBean(jobInstance); return jobInstance; } }
接下来把他配置到Spring当中去
<bean id="jobFactory" class="com.gary.operation.jobdemo.demo1.MyJobFactory"></bean>
然后在把org.springframework.scheduling.quartz.SchedulerFactoryBean的jobFactory设置成我们自己的。
<bean name="MyScheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean"> <!-- 其他属性省略 --> <property name="jobFactory" ref="jobFactory"></property> </bean>
这样就ok了。
问题算是解决了吧,但是想着还要自己实现这些东西,对框架有侵入。就试着找找其它方法。
正好前几天写spring和quartz的例子的时候,一个文章介绍了spring下quartz定时任务的两种方式。博文地址http://kevin19900306.iteye.com/blog/1397744
一个是继承QuartzJobBean,另一个不用继承,单纯的java类。我想QuartzJobBean是spring里的类,这样的话这个方式的定时任务类是否就是spring来管理的。注入应该就没问题了吧。
这是一个很小的项目,实验起来也很简单,就启动,debug。发现还是注入不进去。就接着试第二种方式,debug。惊奇的发现注入没问题了。
到此为止,这个问题已经解决了。当然还是最后一种方式合理简单。
貌似不能上传附件就把所有源码贴过来吧。
目录结构为
pom.xml
<?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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <packaging>war</packaging> <name>test</name> <groupId>test</groupId> <artifactId>test</artifactId> <version>1.0-SNAPSHOT</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> </project>
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app>
applicationContext.xml
<?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:util="http://www.springframework.org/schema/util" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <context:component-scan base-package="com.dupang.*" /> <bean id="jobFactory" class="com.dupang.util.MyJobFactory"></bean> <!-- 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.dupang.quartz.SpringQtz1"></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.dupang.quartz.SpringQtz2"/> <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> </beans>
MyJobFactory
package com.dupang.util; import org.quartz.spi.TriggerFiredBundle; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.config.AutowireCapableBeanFactory; import org.springframework.scheduling.quartz.AdaptableJobFactory; /** * Created by dupang on 2016/11/14. */ public class MyJobFactory extends AdaptableJobFactory { //这个对象Spring会帮我们自动注入进来,也属于Spring技术范畴. @Autowired private AutowireCapableBeanFactory capableBeanFactory; protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception { //调用父类的方法 Object jobInstance = super.createJobInstance(bundle); //进行注入,这属于Spring的技术,不清楚的可以查看Spring的API. capableBeanFactory.autowireBean(jobInstance); return jobInstance; } }
HelloService
package com.dupang.service; /** * Created by dupang on 2016/11/14. */ public interface HelloService { void sayHello(String name); }
HelloServiceImpl
package com.dupang.impl; import com.dupang.service.HelloService; import com.sun.javafx.collections.SourceAdapterChange; import org.springframework.stereotype.Service; /** * Created by dupang on 2016/11/14. */ @Service public class HelloServiceImpl implements HelloService { public void sayHello(String name) { System.out.println("Hello to"+ name); } }
SpringQtz1
package com.dupang.quartz; import com.dupang.service.HelloService; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; import org.springframework.scheduling.quartz.QuartzJobBean; import javax.annotation.Resource; import java.util.Date; /** * Created by Administrator on 2016/11/9. */ public class SpringQtz1 extends QuartzJobBean { @Resource HelloService helloService; private static int counter = 0; protected void executeInternal(JobExecutionContext context) throws JobExecutionException { helloService.sayHello("dupang"); } }
SpringQtz2
package com.dupang.quartz; import com.dupang.service.HelloService; import javax.annotation.Resource; import java.util.Date; /** * Created by Administrator on 2016/11/9. */ public class SpringQtz2 { private static int counter = 0; @Resource HelloService helloService; protected void execute() { helloService.sayHello("dupang"); } }
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Spring quartz定时任务service注入问题