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: 80g}<Lwc
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CountBean.java A ep](je
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/* |k]]dP|:'
* CountData.java WwWOic2
* os;94yd)
* Created on 2007年1月1日, 下午4:44 )[UYCx'
* -W@nc
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* To change this template, choose Tools | Options and locate the template under K+ M\E[1W
* the Source Creation and Management node. Right-click the template and choose N\. g+ W
* Open. You can then make changes to the template in the Source Editor. "'Gq4<&y
*/ F,VWi$Po\N
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package com.tot.count; #l-zY}&
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/** wxJ"{(;
* [hH>BEtm
* @author $gYGnh_,Q
*/ kxyOe[7 S
public class CountBean { 8q6Le{G
private String countType; $\]Mvd
int countId; $39TP@?:Z)
/** Creates a new instance of CountData */ Dt7z<1-)l
public CountBean() {} nwfu@h0G
public void setCountType(String countTypes){ 0(u}z
this.countType=countTypes; d
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} V(LfFO{^>?
public void setCountId(int countIds){ ZR|s]'
this.countId=countIds; ?G!p4u?C
} u-jc8W`Zd
public String getCountType(){ j p~Tlomp
return countType; Syl 9j]
} |=VWE>g
public int getCountId(){ Df2$2VU
return countId; ^e_uprZWm
} JS\]|~Gd
} ,+OVRc
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CountCache.java xqlnHf<G
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/* e~># M$
* CountCache.java Ywt9^M|z;
* =I&BO[d
* Created on 2007年1月1日, 下午5:01 ? ][/hL@[
* 8
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* To change this template, choose Tools | Options and locate the template under !~7lY]_U
* the Source Creation and Management node. Right-click the template and choose &"A:_5AU
* Open. You can then make changes to the template in the Source Editor. zd$iDi($
*/ In:V.'D/>t
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package com.tot.count; KC9VQeSc
import java.util.*; Wq 1OYZ,
/** ~@ <o-|#
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* @author ?=_w5D.3J
*/ kDRxu!/
public class CountCache { @_c&lToj_
public static LinkedList list=new LinkedList(); g.;2N 9
/** Creates a new instance of CountCache */ &F[N$6:v
public CountCache() {} N(J#<;!yb
public static void add(CountBean cb){ '?NMQ
if(cb!=null){ ,.=7{y~
list.add(cb); 2p 7;v7)y
} f`-vnh^+
} e iH&<AH
} '< >Q20
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CountControl.java U_Mag(^-
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/* +Qzl-eN/+
* CountThread.java } 21!b :a
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* Created on 2007年1月1日, 下午4:57 OQg}E@LZ
* 4 s9^%K\8{
* To change this template, choose Tools | Options and locate the template under Edcv>}PfE
* the Source Creation and Management node. Right-click the template and choose |?f~T"|>
* Open. You can then make changes to the template in the Source Editor. T(cpU,Q
*/ O\]{6+$fm!
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package com.tot.count; fcohYo5mh
import tot.db.DBUtils; KNP^k$=)3c
import java.sql.*; q/@r#
/** H#nJWe_9A
* &!'R'{/?X
* @author y6G6wk;
*/ O_
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public class CountControl{ [z;}^ 3b
private static long lastExecuteTime=0;//上次更新时间 m*7RC4"J
private static long executeSep=60000;//定义更新间隔时间,单位毫秒 C4-%|+Q i
/** Creates a new instance of CountThread */ 9&B#@cw
public CountControl() {} qI74a F
public synchronized void executeUpdate(){ Pum&