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只要你想学,就没什么优缺点,上面那位大哥已经把网上的评论说了,但我认为想学哪个都一样,不然它就不可能在当今时代数字艺术方面存活到今天统计Haveyouevertriedtouseoneofthemanyfancy,hightech,multifeatured,superfastandcustommadeweb
serverstatistics?Idonotknowaboutyou,butIdid.EverytimeIlookedthat20+pagereport,Iwas
prettysurethatsomewherebetweenthousandsoflines,theremustbesimpleanswertomyquestions:How
manytimeswasmypagedownloaded?AfterfewtriesIgaveupandwrotemyown,selfadministrated,
blindinglyobviousserverstatistics.
Ideabehindthiscodeisverysimple,inordertoknowwhatisinterestingtovisitorsofmywebsiteI
haveimplementedthissimplecountertoeachpagewhichwasinterestingtome.Ifyouexamineyoursite,
youcaneasilyfindthattherearetwodifferenttypesof.ASPpages;mostofthemusuallyhaveonlysome
basiccodeforexample;sessionvariablewithbackgroundname,calltolastmodifiedcomponent,orreading
datafromdatabase)whileotherareusedforredirecting,storingdataintodatabases,trigeringmail
componentsetc.Well,mycounterwassuposedtobepresentonallpageswhichhavesomeuserviewable
content.Allyouhavetodoisjusttoincludefilewhichcontainscountercode(wheneverpossibleuse
includefiles,halfofthestrengthofASPliesinpowerincludefiles):
Codesnippetnr.1
1<!--#includevirtual="/marko/last001.asp"-->
Includefileitselfisverysimpleanditcontainsonly30lines.Basically,whatIamdoingisopening
databaseconnection(lines1to4).Inline5IamlookingwhatisexactURLandIamtranslating
everythingintolowercase(remembertoputeverythingintolowercase,becausesomeonecanhaveCAPSLOCK
TURNEDON).Afterthat(lines7to9),IamtryingtofindthisURLinmycounterdatabase.Ifthereisno
recordwiththisexactURL(lines11to16),IamassumingthatthisisnewpageandIaminsertingnew
recordsindatabaseandsettingcounterstoone(well,thisisobviouslyfirsttimethatthispageis
viewed).InthecasethereisrecordwithgivenURL(line18)Iamsimplyincreasingcountervaluesbyone
(lines19to23).Afterthat,takeiteasy,closeyourconnectionsanddestroyusedobjects(lines25to
30).Voila!
Codesnippetnr.2-filecounter.asp
1<%Setcount=Server.CreateObject("ADODB.Connection")
2count.Open"NeT"
3
4setcountrs=Server.CreateObject("ADODB.RecordSet")
5url=LCase(Request.ServerVariables("URL"))
6
7sqlstr="SELECTTOP1*FROMcounterWHEREurl="&url&"ORDERBYurl"
8
9countrs.Opensqlstr,count,3,3,1
10
11ifcountrs.recordcount<1then
12sqlstr="INSERTINTOcounter"
13sqlstr=sqlstr&"(url,total,today,month,last,yesterday)VALUES"
14sqlstr=sqlstr&"("&url&",1,1,1,0,0)"
15
16count.Execute(sqlstr)
17
18ElseIfcountrs.recordcount>0then
19countrs.Fields("today")=CInt(countrs.Fields("today"))+1
20countrs.Fields("month")=CInt(countrs.Fields("month"))+1
21countrs.Fields("total")=CLng(countrs.Fields("total"))+1
22
23countrs.Update
24EndIf
25
26countrs.Close
27count.Close
28
29setcountrs=Nothing
30setcount=Nothing%>
Thereisalsoanotherfilecalledreport.aspwhichwillsimplyrenderdatafromyourdatabaseinone
table.Fileisreallysimpleanditrendersresultsfromyourdatabaseintotable.FirstIamcreatinga
table(lines1to13),openingdatabaseconnectionandselectingallrecords(lines15to17),setting
totalcounterandthismonthcounterto0(lines19and20),andstartingdowhileloopuntilIhitendof
file(line22).Inthetabletherearethreecolumns,onewithURL(seeline26),secondwithtotalnumber
ofhits(line30)andthirdwithtotalnumberofhitsthismonth(line34).NotethatIamalsoincreasing
valuesfortotalcountersforeachcolumn(lines30and34).AfterIexitmyloopIamclosingdatabase
connectionsanddestroyingusedobjects(lines41to45).Ifyoucheckvaluesinvariables"total"
and"month"youwillgettotalnumberpageloadingandtotalnumberofpageloadingincurrentmonth.
Codesnippetnr.3-filereport</p>ActiveServerPage技术为应用开发商提供了基于脚本的直观、快速、高效的应用开发手段,极大地提高了开发的效果。在讨论ASP的安全性问题之前,让我们来看看ASP是怎么工作的。 |
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