JAVA使用quartz添加定时任务,并依赖注入对象操作

最近在写定时任务，以前没接触过。查了些相关资料说使用quartz定时框架。

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 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 = WrhFrameSchedulerorg.quartz.scheduler.instanceId = AUTO org.quartz.scheduler.skipUpdateCheck = true #============================================================================# Configure ThreadPool #============================================================================ org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPoolorg.quartz.threadPool.threadCount = 12org.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. */@Componentpublic 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 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 class='com.wy.care60.job.MyJobFactory'></bean> <bean 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>

到这为止，成功！

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