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2020
10-10

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 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>

到这为止，成功！

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