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: $ZQP f
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CountBean.java \8_&@uLm
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/* Eg
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* CountData.java 3ufUB^@4v
* bE]2:~
* Created on 2007年1月1日, 下午4:44 M5Pvc
* uERc\TZ
* To change this template, choose Tools | Options and locate the template under *(o~pxFTR
* 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. _h@e.BtDs
*/ !Otyu6&
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package com.tot.count; }4eSB
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/** ajkRL|^
* <k<
* @author =C<_rBY
*/ tgg*6lc
public class CountBean { {:{NK%
private String countType; eT}c_h)
int countId; GbStqR~^#
/** Creates a new instance of CountData */ W J^r~*r
public CountBean() {} bhuA,}
public void setCountType(String countTypes){ mjB%"w!S
this.countType=countTypes; WnUYZ_+e!
} i'`Z$3EF)
public void setCountId(int countIds){ c(YNv4*X
this.countId=countIds; ,VJ0J!@
} bS*
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public String getCountType(){ K[T?--H
return countType; 5;dnxhf
} Du[$6
public int getCountId(){ j>?c]h{-
return countId; 4V<s"
} `+]4C+w
} BhdJ/C^
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CountCache.java Xv=n+uo
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/* [gH
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* CountCache.java WI}P(!h\J
* FS1<f:
* Created on 2007年1月1日, 下午5:01 \7gLk:
* OU0\xx1/
* To change this template, choose Tools | Options and locate the template under fTV:QAa;
* the Source Creation and Management node. Right-click the template and choose mNcTO0p&
* Open. You can then make changes to the template in the Source Editor. Jqjb@'i
*/ j<wg>O:s%r
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package com.tot.count; MH!'g7iK8
import java.util.*; d;;]+%
/** _j<46^
* #Du1(R
* @author $Wb"X=}tl
*/ cq@8!Eu w]
public class CountCache { 8n);NZ
public static LinkedList list=new LinkedList(); IY,&/MCh
/** Creates a new instance of CountCache */ KcNEB_i
public CountCache() {} \gj@O5rG P
public static void add(CountBean cb){ &m+s5
if(cb!=null){ s?E7tmaM
list.add(cb); V><5N;w
} -br/
} e[w)U{|40
} .w[]Q;K_[)
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CountControl.java )Q6R6xW
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/* 9s5CqB
* CountThread.java 5XA6IL|/l
* (ioi !p
* Created on 2007年1月1日, 下午4:57 ~i6tcd
* K^s!0[6
* To change this template, choose Tools | Options and locate the template under ']A+wGR&r
* the Source Creation and Management node. Right-click the template and choose }& `#
* Open. You can then make changes to the template in the Source Editor.
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*/ ~A [ Ju%R
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package com.tot.count; }_gCWz-5?
import tot.db.DBUtils; a|TP 2m
import java.sql.*; hpLo
/** 3V LwMF?
* I)Lg=n$
* @author e!G
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*/ i&{8a3B
public class CountControl{ *sZOws<
private static long lastExecuteTime=0;//上次更新时间 j4+hWalm
private static long executeSep=60000;//定义更新间隔时间,单位毫秒 mcp}F|ws
/** Creates a new instance of CountThread */ aq,&W
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public CountControl() {} i nF&Pv