陈鹏-外文翻译

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1、外文翻译城市公交查询系统的设计与实现学生姓名：陈鹏指导教师：王萍副教授合作指导教师：专业名称：计算机科学与技术所在学院：大连水产学院2009年6月原文摘自：lvarJacobson.Object-OrientedSoftwareEngineering.第1版.北京：人民邮电出版社，2005.10外文资料原文[ASP.NETPAGEOBJECTMODEL:]Summary:LearnabouttheeventingmodelbuiltaroundASP.NETWebpagesandthevarioussta

2、gesthataWebpageexperiencesonitswaytoHTML.TheASP.NETHTTPruntimegovernsthepipelineofobjectsthattransformtherequestedURLintoalivinginstanceofapageclassfirst,andintoplainHTMLtextnext.Discovertheeventsthatcharacterizethelifecycleofapageandhowcontrolandpageauth

3、orscanintervenetoalterthestandardbehavior.(6printedpages)Introduction:EachrequestforaMicrosoft®ASP.NETpagethathitsMicrosoft®InternetInformationServices(IIS)ishandedovertotheASP.NETHTTPpipeline.TheHTTPpipelineisachainofmanagedobjectsthatsequentiallyprocess

4、therequestandmakethetransitionfromaURLtoplainHTMLtexthappen.TheentrypointoftheHTTPpipelineistheHttpRuntimeclass.TheASP.NETinfrastructurecreatesoneinstanceofthisclasspereachAppDomainhostedwithintheworkerprocess(rememberthattheworkerprocessmaintainsonedisti

5、nctAppDomainpereachASP.NETapplicationcurrentlyrunning).TheHttpRuntimeclasspicksupanHttpApplicationobjectfromaninternalpoolandsetsittoworkontherequest.ThemaintaskaccomplishedbytheHTTPapplicationmanagerisfindingouttheclassthatwillactuallyhandletherequest.Wh

6、entherequestisforan.aspxresource,thehandlerisapagehandler—namely,aninstanceofaclassthatinheritsfromPage.Theassociationbetweentypesofresourcesandtypesofhandlersisstoredintheconfigurationfileoftheapplication.Moreexactly,thedefaultsetofmappingsisdefinedinthe

7、sectionofthemachine.configfile.However,theapplicationcancustomizethelistofitsownHTTPhandlersinthelocalweb.configfile.ThelinebelowillustratesthecodethatdefinestheHTTPhandlerfor.aspxresources.

8、ndlerFactory"/>Anextensioncanbeassociatedwithahandlerclass,ormoreingeneral,withahandlerfactoryclass.Inallcases,theHttpApplicationobjectinchargefortherequestgetsanobjectthatimplementstheIHttpHandlerinterface.Iftheass