定时任务

1）maven 依赖

    <dependency>
        <groupId>org.quartz-scheduler</groupId>
        <artifactId>quartz</artifactId>
        <version>2.2.1</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
        <version>4.1.5.RELEASE</version>
    </dependency>

2）spring 配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.1.xsd">

    <!-- 任务调度工厂类 -->
    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="quartzProperties">
            <props>
                <prop key="org.quartz.threadPool.class">org.quartz.simpl.SimpleThreadPool</prop>
                <prop key="org.quartz.threadPool.threadCount">10</prop>
                <prop key="org.quartz.threadPool.threadPriority">5</prop>
                <prop key="org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread">true</prop>
            </props>
        </property>
        <property name="triggers">
            <list>
                <ref bean="scaQuartzSchedulerTaskTrigger"/>
            </list>
        </property>
        <property name="applicationContextSchedulerContextKey" value="applicationContext"/>
    </bean>
    
    <!-- 统计面积的触发器 -->
    <bean id="scaQuartzSchedulerTaskTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
        <property name="jobDetail" ref="scaQuartzSchedulerTask"/>
        <property name="cronExpression">　　　　<!-- 配置参考 http://www.cnblogs.com/sunjie9606/archive/2012/03/15/2397626.html -->
            <value>0 0 23 * * ?</value>        <!-- 每天夜间23点执行一次 -->
        </property>
    </bean>    
    
    <bean id="scaQuartzSchedulerTask" class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
        <property name="jobClass" value="info.shagri.vpst.web.quartz.StatisComAreasTask"/>
    </bean>
    
</beans>

3）jobClass

package info.shagri.vpst.web.quartz;

import info.shagri.vpst.service.jcsj.CompanyService;

import org.quartz.JobExecutionContext;
import org.springframework.scheduling.quartz.QuartzJobBean;

import com.framework.web.utils.ApplicationContextHolder;

/**
 * 统计所有有效公司各项面积
 * 
 */
public class StatisComAreasTask extends QuartzJobBean {
    
    protected void executeInternal(JobExecutionContext jobExecutionContext) {
        CompanyService service = ApplicationContextHolder.getBean("companyService");
        service.doStatisThenStoreCompanyAreas();
    }
    
}