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: A!5)$>!o
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CountBean.java Y'i_EX|
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/* 6t6#<ts
* CountData.java ,ffH:3F
* 9/S-=VOe.t
* Created on 2007年1月1日, 下午4:44 s@bo df&
* 1=%\4\
* To change this template, choose Tools | Options and locate the template under VFwp .1oa!
* the Source Creation and Management node. Right-click the template and choose ;GxKPy
* Open. You can then make changes to the template in the Source Editor.
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*/ k@ZmI^
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package com.tot.count; snyg
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/** h"G#} C]
* 7*r7Q'
* @author LHz-/0[
*/ IGd]!
public class CountBean { @{!c [{x,T
private String countType; Ey!+rq}
int countId; <M|kOi
/** Creates a new instance of CountData */ @t6B\ ?4'T
public CountBean() {} O=PyXOf
public void setCountType(String countTypes){ (r?41?5K
this.countType=countTypes; cmv&!Egd
} D
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public void setCountId(int countIds){ bm_'giQ:
this.countId=countIds; ZVj/lOP X
} +AyrKs?h
public String getCountType(){ gzthM8A
return countType; }Q?,O
} lXS.,#lp
public int getCountId(){ /MB3w m
return countId; V3NQij(
} 2R2ws.}
} O$
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CountCache.java =r=YV-D.
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/* 6;g"`l51
* CountCache.java oZkjg3
* :O}= $[
* Created on 2007年1月1日, 下午5:01 ]CD
* .|Pq!uLvc
* To change this template, choose Tools | Options and locate the template under @Q;%hb
* the Source Creation and Management node. Right-click the template and choose P5Y:c@u2
* Open. You can then make changes to the template in the Source Editor. o.ntzN
*/ v&p|9C@
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package com.tot.count; [eebIJs
import java.util.*; :d v{'O
/** r5kKNyJ
* S:IhJQ4K
* @author YL_M=h>P
*/ ,iKL
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public class CountCache { h\#\hx
public static LinkedList list=new LinkedList(); 4NaL#3
/** Creates a new instance of CountCache */ Cku#[?G
public CountCache() {} 'O%itCy)
public static void add(CountBean cb){ +ML4.$lc^
if(cb!=null){ )N4!zuSVf
list.add(cb); A}Q6DHh26
} ?RyeZKf
} v]UT1d=_T
} &\8qN_`
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CountControl.java ~:`5Y"Av:
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/* Hd*e9;z
* CountThread.java h0m+u}oP_H
* ME.l{?v
* Created on 2007年1月1日, 下午4:57 ,E8:!r)6
* UoAHy%Y<%
* To change this template, choose Tools | Options and locate the template under ?VUU[h8"v5
* the Source Creation and Management node. Right-click the template and choose b`a4SfbQS
* Open. You can then make changes to the template in the Source Editor. :G3PdQb^
*/ +rAmy
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package com.tot.count; yx0wR
import tot.db.DBUtils; ?4k/V6n@y
import java.sql.*; ~quof>
/** ``X1xiB
* _}bs0 kIz
* @author pco:]3BF6
*/ $('"0 @fg
public class CountControl{ (AYzN3
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private static long lastExecuteTime=0;//上次更新时间 Pz\4#E]
private static long executeSep=60000;//定义更新间隔时间,单位毫秒 W&g