spring quartz 定时任务示例

刚用spring quartz 写了一个定时清理文件夹中excel文件的功能（粗略代码，不经细琢）

在写此功能之前我查了一下，能够实现定时任务的几种方式，主要就是Timer 和 quartz，相比较quartz功能更强大，故选此法

好了，闲话不多说，上干货

具体步骤以及代码

1，导入必要的jar包(略)

2，写定时任务类以及方法（此类需要交于spring管理）

package com.cpic.itCloud.service.quartz;


import java.io.File;
import java.io.FilenameFilter;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;


import org.apache.commons.lang3.time.StopWatch;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;


import com.cpic.itCloud.service.context.ConfigService;


/**
 * 计划任务服务类
 * 
 * @author zhutashan
 * 
 */
@Service
public class ScheduleTaskService {
protected Logger logger = LoggerFactory.getLogger(getClass());


/**
* 清理导出产生的Excel文件
*/
public void cleanExcelFile() {
logger.info("start cleanExcelFile");
StopWatch sw = new StopWatch();
sw.start();
List<File> files = findNeedCleanExcelFile();
for (File f : files) {
if (f.exists()) {
f.delete();
logger.info("delete " + f.getName());
}
}
sw.stop();
logger.info("finish cleanExcelFile [waste time={} second]", sw.getTime() / 1000d);


}


private List<File> findNeedCleanExcelFile() {
List<File> list = new ArrayList<File>();
// 获取excel文件所在路径
File file = new File(this.getClass().getClassLoader().getResource("/").getPath());
String excelPath = file.getParentFile().getParentFile().getAbsolutePath();
File excelDir = new File(excelPath, ConfigService.EXCEL_DOWNLOAD_PATH.substring(0, ConfigService.EXCEL_DOWNLOAD_PATH.lastIndexOf("/")));
// 得到excel 文件
File[] excelFiles = excelDir.listFiles(new FilenameFilter() {
public boolean accept(File file, String name) {
// 这里的file是dir引用所指的对象,name就是需要过滤的内容
return name.endsWith(".xls");
}
});
// 得到此时 CLEAN_EXCEL_FILE_INTERVAL 以前未修改的excel，用来清除
for (File f : excelFiles) {
boolean needClean = (new Date().getTime() - f.lastModified()) / 1000 / 60 > ConfigService.CLEAN_EXCEL_FILE_INTERVAL ? true : false;
if (needClean) {
list.add(f);
}
}
return list;


}
}

3，在quartz.xml中配置此定时方法

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:util="http://www.springframework.org/schema/util" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:core="http://cxf.apache.org/core"
xmlns:jaxrs="http://cxf.apache.org/jaxrs" xmlns:jaxws="http://cxf.apache.org/jaxws"
xsi:schemaLocation="
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/cache    http://www.springframework.org/schema/cache/spring-cache.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://cxf.apache.org/jaxws  http://cxf.apache.org/schemas/jaxws.xsd
http://cxf.apache.org/core http://cxf.apache.org/schemas/core.xsd
http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd" default-lazy-init="true">
   <!-- 定时清理excel -->
<bean id="cleanExcelFileJob" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
<property name="targetObject" ref="scheduleTaskService" />
<property name="targetMethod" value="cleanExcelFile" />
<property name="concurrent" value="false" />
</bean>


<bean id="cleanExcelFileTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
<property name="jobDetail" ref="cleanExcelFileJob" />
<property name="cronExpression">
<value>0 0 */2 * * ?</value>
</property>
<!-- <property name="misfireInstructionName" value="MISFIRE_INSTRUCTION_DO_NOTHING"/>  --> 
</bean>
    <bean id="DefaultQuartzScheduler"
class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="triggers">
<list>
<ref bean="cleanExcelFileTrigger" />  
</list>
</property>
<!-- quartz配置文件路径, 指向配置 -->
<property name="configLocation" value="classpath:quartz/quartz.properties" />
</bean>
</beans>