有时要为每一篇文章统计其点击次数，如果每一次浏览都要更新一次库的话，那性能在访问量很大的情况下，服务器的压力就会很大了，比较好一点的方法就是先将要更新的数据缓存起来，然后每隔一段时间再利用数据库的批量处理，批量更新库。源码如下：
CountBean.java
/*
* CountData.java
*
* Created on 2006年10月18日, 下午4:44
*
* To change this template, choose Tools | Options and locate the template under
* the Source Creation and Management node. Right-click the template and choose
* Open. You can then make changes to the template in the Source Editor.
*/
package com.tot.count;
/**
*
* @author http://www.tot.name
*/
public class CountBean {
private String countType;
int countId;
/** Creates a new instance of CountData */
public CountBean() {}
public void setCountType(String countTypes){
this.countType=countTypes;
}
public void setCountId(int countIds){
this.countId=countIds;
}
public String getCountType(){
return countType;
}
public int getCountId(){
return countId;
}
}
CountCache.java
/*
* CountCache.java
*
* Created on 2006年10月18日, 下午5:01
*
* To change this template, choose Tools | Options and locate the template under
* the Source Creation and Management node. Right-click the template and choose
* Open. You can then make changes to the template in the Source Editor.
*/
package com.tot.count;
import java.util.*;
/**
*
* @author http://www.tot.name
*/
public class CountCache {
public static LinkedList list=new LinkedList();
/** Creates a new instance of CountCache */
public CountCache() {}
public static void add(CountBean cb){
if(cb!=null){
list.add(cb);
}
}
}
CountControl.java
/*
* CountThread.java
*
* Created on 2006年10月18日, 下午4:57
*
* To change this template, choose Tools | Options and locate the template under
* the Source Creation and Management node. Right-click the template and choose
* Open. You can then make changes to the template in the Source Editor.
*/
package com.tot.count;
import tot.db.DBUtils;
import java.sql.*;
/**
*
* @author http://www.tot.name
*/
public class CountControl{
private static long lastExecuteTime=0;//上次更新时间
private static long executeSep=60000;//定义更新间隔时间，单位毫秒
/** Creates a new instance of CountThread */