Spring Quartz 的使用

最近忙于项目，一直没有更新blog，请大家见谅。
在项目中使用了Lucene全文检索，考虑到系统的特性，把Lucene的全文检索索引创建时间放在夜晚，已减轻系统的压力。
首先，需要写一个类，这个类是用来执行具体的操作。也就是你想做什么事情，这个类需要extends org.springframework.scheduling.quartz.QuartzJobBean 类。
比如：

package com.finegold.digimus.service.config;

import java.util.Date;
import java.util.List;

import org.apache.log4j.Logger;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;

import com.finegold.digimus.comm.StringHelper;

import com.finegold.digimus.lucene.index.service.imp.AddCatalogArticleDataDocument;
import com.finegold.digimus.lucene.index.service.imp.AddMediaContentDocument;
import com.finegold.digimus.lucene.index.service.imp.IndexFactory;
import com.finegold.digimus.service.CatalogArticleDataService;
import com.finegold.digimus.service.MediaContentService;
import com.finegold.digimus.service.bean.IndexPath;

/**
 * @author 汪心利 2007-9-6 下午03:41:29
 * @copyRigth FineGold 2007
 * @Describle 定时创建Lucene索引任务的定时器
 */

public class IndexQuartz extends QuartzJobBean {

 private Logger logger = Logger.getLogger(IndexQuartz.class);

 private MediaContentService mediaContent;

 private CatalogArticleDataService catalogArticleData;

 private IndexPath indexPath;

 /**
  * @return the indexPath
  */
 public IndexPath getIndexPath() {
  return indexPath;
 }

 /**
  * @param indexPath
  *            the indexPath to set
  */
 public void setIndexPath(IndexPath indexPath) {
  this.indexPath = indexPath;
 }

 /**
  * @return the catalogArticleData
  */
 public CatalogArticleDataService getCatalogArticleData() {
  return catalogArticleData;
 }

 /**
  * @param catalogArticleData
  *            the catalogArticleData to set
  */
 public void setCatalogArticleData(
   CatalogArticleDataService catalogArticleData) {
  this.catalogArticleData = catalogArticleData;
 }

 /**
  * @return the mediaContent
  */
 public MediaContentService getMediaContent() {
  return mediaContent;
 }

 /**
  * @param mediaContent
  *            the mediaContent to set
  */
 public void setMediaContent(MediaContentService mediaContent) {
  this.mediaContent = mediaContent;
 }

 @Override
 protected void executeInternal(JobExecutionContext arg0)
   throws JobExecutionException {

//在这里加入你的操作
  StringBuffer logInfo = new StringBuffer();
  logInfo.append("在").append(StringHelper.encodeHTML(new Date())).append(
    "开始执行创建索引的任务调度");
  logger.info(logInfo.toString());
  try {
   List m_list = mediaContent.findByMediaid(null, null);
   IndexFactory.getInstance().createIndex(m_list,
     new AddMediaContentDocument(),
     indexPath.getMediaIndexPath());
   List c_list = catalogArticleData.loadAllData();
   IndexFactory.getInstance().createIndex(c_list,
     new AddCatalogArticleDataDocument(),
     indexPath.getCatalogIndexPath());
   logger.info(StringHelper.encodeHTML(new Date()) + "创建索引任务完成！");

  } catch (Exception e) {
   logger.error("使用Spring定时器创建索引出错!");
  }
 }
}

然后在applicationContext.xml中配置：

 <!-- =========================Quartz TimeTask  配置 ========================= -->

 <bean id="indexJob"
  class="org.springframework.scheduling.quartz.JobDetailBean">
  <property name="jobClass">
   <value>
    com.finegold.digimus.service.config.IndexQuartz<!-- 刚刚写的类-->
   </value>
  </property>
  <property name="jobDataAsMap">
   <map><!-- 类里一些属性 key:propertyName-->
    <entry key="indexPath">
     <ref local="indexPath" />
    </entry>
    <entry key="catalogArticleData">
     <ref bean="catalogArticleDataService" />
    </entry>
    <entry key="mediaContent">
     <ref bean="mediaContentService" />
    </entry>
   </map>
  </property>
 </bean>

<!-- 配置那个任务在何时执行 -->

 <bean id="cronTrigger"
  class="org.springframework.scheduling.quartz.CronTriggerBean">
  <property name="jobDetail">
   <ref bean="indexJob" />
  </property>
  <property name="cronExpression">
   <value>0 9 * * * ?</value>
   <!--<value>* * 23 * * ?</value>-->
  </property>
 </bean>

<!-- 将任务放入 SchedulerFactoryBean--> 
<bean id="scheduler"
  class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
  <property name="triggers">
   <list>
    <ref bean="cronTrigger" />
   </list>
  </property>
 </bean>

这只是其中的一种方式，还有其它的方式。请等待......