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: u]ps-R_$G
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CountBean.java AR&l9R[{N
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/* p<wC{D
* CountData.java O'3/21)|y
* J |UFuD
* Created on 2007年1月1日, 下午4:44 S-</(,E}|
* }m7$,'C%P
* To change this template, choose Tools | Options and locate the template under v$5D&Tv
* the Source Creation and Management node. Right-click the template and choose &F Yv4J
* Open. You can then make changes to the template in the Source Editor. t)~$p#NS
*/ #uICHt3
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package com.tot.count; &fU48n1Uh
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/** 8LXK3D}?3
* ?|!m
* @author J Rj{Q 1J
*/ 9jNh%raG|
public class CountBean { R|wS*xd ,
private String countType; GJHJ?^%
int countId; f;Ijl 0d@
/** Creates a new instance of CountData */ YRd`G3J
public CountBean() {} >RpMw!NT
public void setCountType(String countTypes){ k72NXagh
this.countType=countTypes; -7%dgY(
} *O)i)["
public void setCountId(int countIds){ [~`p~@\+
this.countId=countIds; wByTNA7
} 3v `@**
public String getCountType(){ *!3qO^b?
return countType; pZt>rv
} ,pQ[e$u1
public int getCountId(){ 7m?fvKy
return countId; NGO?K?
} nHp$5|r<
} XJ" xMv
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CountCache.java zvdIwV&oT
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/* Q]VG6x
* CountCache.java i<=2 L?[.I
* :()K2<E
* Created on 2007年1月1日, 下午5:01 >!tfvM2X{
* U:[CcN/~3
* To change this template, choose Tools | Options and locate the template under %afF%y
* the Source Creation and Management node. Right-click the template and choose 2t>>08T
* Open. You can then make changes to the template in the Source Editor. b5f+q:?{
*/ B+pLW/4l
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package com.tot.count; $*Wa A`(U
import java.util.*; B[+b%a3
/** u^WZsW
* _x,(576~
* @author /ZH* t \
*/ NJOV!\k
public class CountCache { 8E9k7
public static LinkedList list=new LinkedList(); TD4
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/** Creates a new instance of CountCache */ `Ao"fRv#
public CountCache() {} +$/NTUOP
public static void add(CountBean cb){ #yEkd2Vy{
if(cb!=null){ zN-Y=-c
list.add(cb); mS0;2xU
} ;<xPzf
} cHVu6I?h
} 7_lgo6
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CountControl.java AgUjC
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/* b!nA.`T
* CountThread.java w=0zVh_`(
* niYD[Ra\xP
* Created on 2007年1月1日, 下午4:57 t~!ag#3['.
* ![MtJo5
* To change this template, choose Tools | Options and locate the template under 5-S-r9
* the Source Creation and Management node. Right-click the template and choose s:z
* Open. You can then make changes to the template in the Source Editor. -Y N(j\
*/ ]@ Vp:RGMr
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package com.tot.count; Q
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import tot.db.DBUtils; 6{fo.M?
import java.sql.*; z(>:LX"xz
/** <7/7+_y
* 0G+qF96
* @author qP=a:R-
*/ T?`Ha\go
public class CountControl{ zn|O)"C
private static long lastExecuteTime=0;//上次更新时间 z:)*Aobwv
private static long executeSep=60000;//定义更新间隔时间,单位毫秒 4FKgp|Y0
/** Creates a new instance of CountThread */ `q1-yH0~4
public CountControl() {}
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public synchronized void executeUpdate(){ w[EEA_\
Connection conn=null; * )HVK&