ASP网页设计经由过程ASP在Flash中妙用Cookie
专业性的服务。有的ASP商提供垂直型的应用服务，针对某一特定行业提供应用服务。cookieWrittenby:GünterHoffellnerTranslatedby:BernhardSpuida
Firstpublished:9/8/2000
SettingorreadingcookiesinFlashmaybenecessaryforexampletoextendthepersonalizationofaweb
sitetotheFlashfile.
Flashdoesnotsupportdirectsettingandreadingofcookies.Thus,youeitherhavetotaketheoften
publisheddetourofusingJavaScriptoryoujustuseASPscriptstosetandreadcookies.Thishasamong
otherthingstheadvantagethatFlashcanaccesscookiesevenwhenJavaScriptisdisabled.
TheFlashFile
InthefollowingtheFlashfilewhichcanreadandsetcookiesattheclientisdescribed.Thefilecalls
theASPScriptstestCookies.asp,setCookies.aspandgetCookies.asptogainaccesstothebrowserscookies
viaASP.
TheFlashfiletestsforthepermissiontosetclientsidecookiesandallowsenteringdatathatistobe
storedinacookie.Thefilealsoreadsthecookiecontentanddisplaysitonscreen.
Therearetwofilesinthedownload:one.flainEnglish,andasecondoneinGerman.Thecompiled.swfis
availableinGermanonly.
TheUserInterface
Theuserinterfaceisdividedintothreepartswhicharedescribedinthefollowingsections.
Figure1:UserinterfaceinFlash
Step1:
TheuserclickstheSTARTTESTbuttontotriggerthetestontheservertodeterminewhetherthebrowser
ofthepagevisitoracceptscookies.Thestatusmessageindicateswhetherthebrowseracceptscookiesor
not.
Step2:
Inthecaseofcookiesbeingaccepted,theFlashmovierunsontothesecondpartandwaitsfordatatobe
savedinacookie.WithaclickontheSENDDATAbutton,thedataistransmittedtotheserver.
Step3:
Inthelastpart,theserverpassesthecookiedatabacktotheFlashfilewheretheyarewrittenintothe
textfields.
TheScriptsoftheFlashFile
ThegraphicpartoftheFlashfileisbuiltaccordingtostandardprocedureandisnotdescribedindetail
forthisreason.
ThelayerwiththenameSourcecodeisimportant,asthiscontainsthesourcecodeoftheFlashfile.We
willgointothedetailsofthisnow.
Figure2:TimelineinFlash
//Frame1
SetVariable:"cookies"="false"
stop
Thevariablecookiesisinitialisedwiththestringfalse.falseisusedastheserverdoesnot
returnthebooleanvaluestrueandfalse,butastringwiththevalueof"true"or"false".Flashwaits
forthebuttonclickforstartingthecookietest.
//Frame2,Labelstep1
LoadVariables("/testcookies.asp",0)
Thefiletestcookies.aspiscalledandreturnstrueorfalse(Cookiesaccepted-Cookiesnot
accepted).
//Frame10
If(cookieseq"true")
SetVariable:"cookietest"="Cookiescanbeset"
Stop
Else
SetVariable:"cookietest"="Cookiesnotallowed.Pleaseenable."
GotoandStop("nocookies")
EndIf
InFrame10adifferentmessageisdisplayedinthestatusfielddependingontheresultofthecookie
test.
Ifcookiesarenotaccepted,Flashjumpstothelabelnocookies,stopsthereandwillnotacceptany
inputbutanothercookietest.Intheif-conditioncookieseq"true"issetinquotesastheserverdoes
notreallyreturnthebooleanvaluesoftrueorfalse,butastringwhichisimmediatelytestedassuch.
Alsonotethatthestringcomparisonrequireseqinsteadof=.
ThestopcommandforcesFlashtowaitforaclickeventoftheSENDDATAbutton.Sendingthecookie
datatotheserverhappensasfollows:
//Frame11,Labelstep2
LoadVariables("/setcookies.asp?cookiename="&name&"&"&
"cookiemail="&email&"&"&"cookietelephone="&telephone,0)
Inthisscript,aquerystringcontainingtheuserentriesissenttothefilesetcookies.asp.Forthe
compositionofthequerystring,refertothearticleDataExchangebetweenASPandFlash(Germanonly).
//Frame19,Labelstep3
LoadVariables("/getcookies.asp",0)
ThedatareadfromacookiebyASPisloadedintotheFlashfile.
//Frame28
Stop
The</p>写软件都是想的时间比写的时间要长的.如果反过来了就得看看是什么原因了.另外大家可以回去问问公司里的小MM.(一般企业里,跟你们交付软件接触得最多的是她们) 哪些内置对象是可以跳过的，或者哪些属性和方法是用不到的? 如何学好ASP,以前也有人问过,把回答给你转过来看看能否对你有帮助: 尽管MS自己讲C#内核中更多的象VC，但实际上我还是认为它和Java更象一些吧。首先它是面向对象的编程语言，而不是一种脚本，所以它具有面向对象编程语言的一切特性，比如封装性、继承性、多态性等等，这就解决了刚才谈到的ASP的那些弱点。 作为IE上广为流传的动态网页开发技术,ASP以它简单易学博得了广大WEB程序爱好这的青睐,而且它对运行环境和开发品台的不挑剔,以及有大量有效的参考手册,极大的推广了它的发展。 哪些内置对象是可以跳过的，或者哪些属性和方法是用不到的? 你可以通过继承已有的对象最大限度保护你以前的投资。并且C#和C++、Java一样提供了完善的调试/纠错体系。 ASP.Net和ASP的最大区别在于编程思维的转换，而不仅仅在于功能的增强。ASP使用VBS/JS这样的脚本语言混合html来编程，而那些脚本语言属于弱类型、面向结构的编程语言，而非面向对象，这就明显产生以下几个问题： Application:这个存储服务端的数据，如果不清除，会直到web应用程序结束才清除(例如重启站点) 运用经典的例子。并且自己可以用他来实现一些简单的系统。如果可以对他进行进一步的修改，找出你觉得可以提高性能的地方，加上自己的设计，那就更上一个层次了，也就会真正地感到有所收获。 以HTML语言整合(HTML负责界面上，ASP则负责功能上)形成一个B/S(浏览器/服务器)模式的网页程序。
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