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: %Y^J''
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CountBean.java ,erw(7}'.
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/* 8H!QekQZ]\
* CountData.java lPTx] =G
* 3N7H7(IR
* Created on 2007年1月1日, 下午4:44 %q {q.(M#
* d1j9{
* To change this template, choose Tools | Options and locate the template under 8t-GsjHb
* the Source Creation and Management node. Right-click the template and choose ',+yD9 @
* Open. You can then make changes to the template in the Source Editor. BrV{X&>[i
*/ Z~5) )5Ye;
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package com.tot.count; m~=~DMj
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/** #~ u0R>=
* LFp "Waiv
* @author +{J8,^z#
*/ )-C3z
public class CountBean { 0'QWa{dS\
private String countType; P15
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int countId; CD|[PkjW
/** Creates a new instance of CountData */ "LMj,qZ1!
public CountBean() {} %`Re{%1;
public void setCountType(String countTypes){ tXD$HeBB?
this.countType=countTypes; bzgC+yT
} \o9 \ikR
public void setCountId(int countIds){ UX 1
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this.countId=countIds; JfY*#({y
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public String getCountType(){ \8`?ir
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return countType; <xOv8IQ|
} wQkM:=t5
public int getCountId(){ a?cJl
return countId; !vnQ;g5
} vF$i"^;tJ;
} :+rGBkw1m
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CountCache.java wj|Zn+{"nF
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/* ?6#won
* CountCache.java c0!.ei
* .L'w/"O
* Created on 2007年1月1日, 下午5:01 0YeTS!*Aj
* -N *L1Zj
* To change this template, choose Tools | Options and locate the template under EY}:aur
* the Source Creation and Management node. Right-click the template and choose em$pU*`P
* Open. You can then make changes to the template in the Source Editor. y_]+;% w:
*/ @ZKf3,J0
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package com.tot.count; E8Dh;j
import java.util.*; yU? jmJ
/** 1H)mJVIKkB
* ~Bd=]a$mj
* @author $o^Z$VmL
*/ JzHG5nmB
public class CountCache { k;WD[SV
public static LinkedList list=new LinkedList(); /?\3%<vn
/** Creates a new instance of CountCache */ G
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public CountCache() {} FMfpjuHk
public static void add(CountBean cb){ t^t% >9o
if(cb!=null){ taQE
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list.add(cb); YIU3}sJ!
} d_RgKdR )k
} >t D=t8
} aQkOQy
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CountControl.java 3r\8v`^>
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/* v*;d
* CountThread.java lWbu`y
* Dn- gP
* Created on 2007年1月1日, 下午4:57 "tK%]c d-
* :FyF:=
* To change this template, choose Tools | Options and locate the template under ~6vz2DuB=
* the Source Creation and Management node. Right-click the template and choose >yIJ8IDF
* Open. You can then make changes to the template in the Source Editor. xo:kT )
*/ hy;VvAH5
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package com.tot.count; jvT'N@
import tot.db.DBUtils; _KT!OYH
import java.sql.*; boh?Xt-$
/** a"8[,A3
* s6H'}[E<
* @author 95DEuReKi
*/ ZedFhm
public class CountControl{ nK&]8"
private static long lastExecuteTime=0;//上次更新时间 xU
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private static long executeSep=60000;//定义更新间隔时间,单位毫秒 ! -gU~0
/** Creates a new instance of CountThread */ ,Q`qnn&
public CountControl() {} %+7]/_JO&