JAVA使用quartz实现添加定时任务并依赖注入对象？很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
需要配置文件：config-quartz.xml
相关配置如下（红色部分是之后添加的，在后面步骤会说明）：
<?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:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd"> <bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean"> <property name="schedulerName" value="rqmis"></property> <property name="applicationContextSchedulerContextKey" value="applicationContextKey" /> <property name="configLocation" value="classpath:quartz.properties" /> <property name="autoStartup" value="true"></property> <property name="triggers"> <list> <bean class="org.springframework.scheduling.quartz.CronTriggerFactoryBean"> <property name="cronExpression" value="0 0 0 * * ?"></property> <property name="jobDetail"> <bean class="org.springframework.scheduling.quartz.JobDetailFactoryBean"> <property name="jobClass" value="com.wy.care60.job.HealthPlanJob" /> </bean> </property> </bean> </list> </property> </bean> <!--</property> </bean>--> </beans>
quartz.properties
#============================================================================ # Configure Main Scheduler Properties #============================================================================ org.quartz.scheduler.instanceName = WrhFrameScheduler org.quartz.scheduler.instanceId = AUTO org.quartz.scheduler.skipUpdateCheck = true #============================================================================ # Configure ThreadPool #============================================================================ org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool org.quartz.threadPool.threadCount = 12 org.quartz.threadPool.threadPriority = 5 #============================================================================ # Configure JobStore #============================================================================ org.quartz.jobStore.misfireThreshold = 60000 org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore #org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX #org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.PostgreSQLDelegate #org.quartz.jobStore.useProperties = false #org.quartz.jobStore.dataSource = myDS #org.quartz.jobStore.tablePrefix = QRTZ_ #org.quartz.jobStore.isClustered = false #============================================================================ # Configure Datasources #============================================================================ #org.quartz.dataSource.myDS.driver = org.postgresql.Driver #org.quartz.dataSource.myDS.URL = jdbc:postgresql://localhost/dev #org.quartz.dataSource.myDS.user = jhouse #org.quartz.dataSource.myDS.password = #org.quartz.dataSource.myDS.maxConnections = 5
最后spring-mvc.xml配置文件中奖quartz.xml文件引入即可：
<import resource="config-quartz.xml"></import>
然后写测试类开始测试定时任务：
package com.wy.care60.job;
import com.wy.care60.dao.MElementMapper;
import com.wy.care60.dao.MInterEnumMapper;
import com.wy.care60.dao.MProjectMapper;
import com.wy.care60.model.MInterEnum;
import com.wy.care60.model.MProject;
import org.apache.tools.ant.Project;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.quartz.QuartzJobBean;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
/**
* Created by Administrator on 2017/12/20.
*/
@Component
public class HealthPlanJob extends QuartzJobBean {
@Autowired
MProjectMapper mProjectMapper;
@Override
public void executeInternal(JobExecutionContext jobExecutionContext) throws JobExecutionException {
System.out.println(new Date());
}
}发现时间可以打印出来，证明定时任务成功开启；但是同时也发现了一个问题，就是依赖注入的 mProjectMapper值为null。
开始以为是Spring的原因，导致注解失败，后来查了相关资料发现，不是Spring的原因，而是因为：这个Job是由quartz实例化出来的，不受Spring的管理，所以就导致注入失败。解决办法是自己new一个类，让Spring实例化这个类，代码如下
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;
public class MyJobFactory extends AdaptableJobFactory {
@Autowired
private AutowireCapableBeanFactory capableBeanFactory;
protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception {
//调用父类的方法
Object jobInstance = super.createJobInstance(bundle);
capableBeanFactory.autowireBean(jobInstance);
return jobInstance;
}
}然后把这个类配置到Spring中去，（config-quartz.xml中红色部分）
<bean id="jobFactory" class="com.wy.care60.job.MyJobFactory"></bean>
然后在把org.springframework.scheduling.quartz.SchedulerFactoryBean的jobFactory设置成我们自己的。（config-quartz.xml中红色部分）
<bean name="MyScheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean"> <!-- 其他属性省略 --> <property name="jobFactory" ref="jobFactory"></property> </bean>
config-quartz.xml完整版如下：
<?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:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd"> <bean id="jobFactory" class="com.wy.care60.job.MyJobFactory"></bean> <bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean"> <property name="schedulerName" value="rqmis"></property> <property name="applicationContextSchedulerContextKey" value="applicationContextKey" /> <property name="configLocation" value="classpath:quartz.properties" /> <property name="autoStartup" value="true"></property> <property name="jobFactory" ref="jobFactory"></property> <property name="triggers"> <list> <bean class="org.springframework.scheduling.quartz.CronTriggerFactoryBean"> <property name="cronExpression" value="0 0 0 * * ?"></property> <property name="jobDetail"> <bean class="org.springframework.scheduling.quartz.JobDetailFactoryBean"> <property name="jobClass" value="com.wy.care60.job.HealthPlanJob" /> </bean> </property> </bean> </list> </property> </bean> <!--</property> </bean>--> </beans>
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