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簡(jiǎn)介：附錄1BEGINNINGASPNET20INCASPACTIVESERVERPAGESISARELATIVELYNEWTECHNOLOGYTHAT’SALREADYLEAPTTHROUGHSEVERALSTAGESOFEVOLUTIONITWASINTRODUCEDABOUTSEVENYEARSAGOASANEASYWAYTOADDDYNAMICCONTENTTOORDINARYWEBPAGESSINCETHEN,IT’SGROWNINTOSOMETHINGMUCHMOREAMBITIOUSAPLATFORMFORCREATINGADVANCEDWEBAPPLICATIONS,INCLUDINGECOMMERCESHOPS,DATADRIVENPORTALSITES,ANDJUSTABOUTANYTHINGELSEYOUCANFINDONTHEINTERNETASPNET20ISTHELATESTVERSIONOFASP,ANDITREPRESENTSTHEMOSTDRAMATICCHANGEYETWITHASPNET,DEVELOPERSNOLONGERNEEDTOPASTETOGETHERAJUMBLEOFHTMLANDSCRIPTCODEINORDERTOPROGRAMTHEWEBINSTEAD,YOUCANCREATEFULLSCALEWEBAPPLICATIONSUSINGNOTHINGBUTCODEANDADESIGNTOOLSUCHASVISUALSTUDIO2005THECOSTOFALLTHISINNOVATIONISTHELEARNINGCURVENOTONLYDOYOUNEEDTOLEARNHOWTOUSEANADVANCEDDESIGNTOOLVISUALSTUDIOANDATOOLKITOFOBJECTSTHENETFRAMEWORK,YOUALSONEEDTOMASTERAPROGRAMMINGLANGUAGESUCHASCTHEINTERNETBEGANINTHELATE1960SASANEXPERIMENTITSGOALWASTOCREATEATRULYRESILIENTINFORMATIONNETWORKONETHATCOULDWITHSTANDTHELOSSOFSEVERALCOMPUTERSWITHOUTPREVENTINGTHEOTHERSFROMCOMMUNICATINGDRIVENBYPOTENTIALDISASTERSCENARIOSSUCHASNUCLEARATTACK,THEUSDEPARTMENTOFDEFENSEPROVIDEDTHEINITIALFUNDINGTHEEARLYINTERNETWASMOSTLYLIMITEDTOEDUCATIONALINSTITUTIONSANDDEFENSECONTRACTORSITFLOURISHEDASATOOLFORACADEMICCOLLABORATION,ALLOWINGRESEARCHERSACROSSTHEGLOBETOSHAREINFORMATIONINTHEEARLY1990S,MODEMSWERECREATEDTHATCOULDWORKOVEREXISTINGPHONELINES,ANDTHEINTERNETBEGANTOOPENUPTOCOMMERCIALUSERSIN1993,THEFIRSTHTMLBROWSERWASCREATED,ANDTHEINTERNETREVOLUTIONBEGANITWOULDBEDIFFICULTTODESCRIBEEARLYWEBSITESASWEBAPPLICATIONSINSTEAD,THEFIRSTGENERATIONOFWEBSITESOFTENLOOKEDMORELIKEBROCHURES,CONSISTINGMOSTLYOFFIXEDHTMLPAGESTHATNEEDEDTOBEUPDATEDBYHANDBASICHTMLPAGEISALITTLELIKEAWORDPROCESSINGDOCUMENTITCONTAINSFORMATTEDCONTENTTHATCANBEDISPLAYEDONYOURCOMPUTER,BUTITDOESN’TACTUALLYDOANYTHINGTHEFOLLOWINGEXAMPLESHOWSHTMLATITSSIMPLEST,WITHADOCUMENTTHATCONTAINSAHEADINGANDSINGLELINEOFTEXTANHTMLDOCUMENTHASTWOTYPESOFCONTENTTHETEXTANDTHETAGSTHATTELLTHEBROWSERHOWTOFORMATITTHETAGSAREEASILYRECOGNIZABLE,BECAUSETHEYOCCURINSIDEANGLEDBRACKETSHTMLDEFINESTAGSFORDIFFERENTLEVELSOFHEADINGS,PARAGRAPHS,HYPERLINKS,ITALICANDBOLDFORMATTING,HORIZONTALLINES,ANDSOONFOREXAMPLE,SOMETEXTTELLSTHEBROWSERTODISPLAYSOMETEXTINTHEHEADING1STYLE,WHICHUSESALARGE,BOLDFONTFIGURE11SHOWSTHESIMPLEHTMLPAGEINABROWSERHTML20INTRODUCEDTHEFIRSTSEEDOFWEBPROGRAMMINGWITHATECHNOLOGYCALLEDHTMLFORMSHTMLFORMSEXPANDHTMLSOTHATITINCLUDESNOTONLYFORMATTINGTAGSBUTALSOTAGSFORGRAPHICALWIDGETS,ORCONTROLSTHESECONTROLSINCLUDECOMMONINGREDIENTSSUCHASDROPDOWNLISTS,TEXTBOXES,ANDBUTTONSHERE’SASAMPLEWEBPAGECREATEDWITHHTMLFORMCONTROLSHTMLFORMSALLOWWEBAPPLICATIONDEVELOPERSTODESIGNSTANDARDINPUTPAGESWHENTHEUSERCLICKSTHEERRORPRONEDEPLOYMENTSTEPSINSTEAD,AWEBAPPLICATIONCANBEUSEDONANYCOMPUTERTHATHASINTERNETACCESSBUTWHENDEVELOPERSUSECLIENTSIDETECHNOLOGIES,THEYENCOUNTERAFEWFAMILIARHEADACHESSUDDENLY,CROSSBROWSERCOMPATIBILITYBECOMESAPROBLEMDEVELOPERSAREFORCEDTOTESTTHEIRWEBSITESWITHDIFFERNETOPERATINGSYSTEMSANDBROWSERS,ANDTHEYMIGHTEVENNEEDTODISTRIBUTEBROWSERUPDATESTOTHEIRCLIENTSINOTHERWORDS,THECLIENTSIDEMODELSACRIFICESSOMEOFTHEMOSTIMPORTANTBENEFITSOFWEBDEVELOPMENTORTHATREASON,ASPNETISDESIGNEDASASERVERSIDETECHNOLOGYALLASPNETCODEEXECUTESONTHESERVERWHENTHECODEISFINISHEDEXECUTING,THEUSERRECEIVESANORDINARYHTMLPAGE,WHICHCANBEVIEWEDINANYBROWSERFIGURE13SHOWSTHEDIFFERENCEBETWEENTHESERVERSIDEANDCLIENTSIDEMODELTHESEARESOMEOTHERREASONSFORAVOIDINGCLIENTSIDEPROGRAMMINGISOLATIONCLIENTSIDECODECAN’TACCESSSERVERSIDERESOURCESFOREXAMPLE,ACLIENTSIDEAPPLICATIONHASNOEASYWAYTOREADAFILEORINTERACTWITHADATABASEONTHESERVERATLEASTNOTWITHOUTRUNNINGINTOPROBLEMSWITHSECURITYANDBROWSERCOMPATIBILITYSECURITYENDUSERSCANVIEWCLIENTSIDECODEANDONCEMALICIOUSUSERSUNDERSTANDHOWANAPPLICATIONWORKS,THEYCANOFTENTAMPERWITHITMECASES,ASPNETALLOWSYOUTOCOMBINETHEBESTOFCLIENTSIDEPROGRAMMINGWITHSERVERSIDEPROGRAMMINGFOREXAMPLE,THEBESTASPNETCONTROLSCANINTELLIGENTLYDETECTTHEFEATURESOFTHECLIENTBROWSERIFTHEBROWSERSUPPORTSJAVASCRIPT,THESECONTROLSWILLRETURNAWEBPAGETHATINCORPORATESJAVASCRIPTFORARICHER,MORERESPONSIVEUSERINTERFACEHOWEVER,NOMATTERWHATTHECAPABILITIESOFTHEBROWSER,YOURCODEISALWAYSEXECUTEDONTHESERVERSTATELIMITATIONSTOENSUREOPTIMUMPERFORMANCE,THEWEBISBUILTONSTATELESSPROTOCOLS,WHICHMEANSASSOONASAPAGEISSENTTOAUSER,THECONNECTIONISCLOSEDANDANYUSERSPECIFICINFORMATIONISDISCARDEDASPINCLUDESASESSIONSTATEFEATURETHATALLOWSPROGRAMMERSTOWORKAROUNDTHISPROBLEMUSINGSESSIONSTATE,AWEBAPPLICATIONCANRETAINTEMPORARYINFORMATIONABOUTEACHCLIENTINSERVERMEMORYHOWEVER,SESSIONSTATEISUSELESSINSCENARIOSWHEREAWEBSITEISHOSTEDBYSEVERALSEPARATEWEBSERVERSINTHISSCENARIO,ACLIENTMIGHTACCESSSERVERBWHILEITSSESSIONINFORMATIONISTRAPPEDONSERVERAANDESSENTIALLYABANDONEDASPNETCORRECTSTHISPROBLEMBYALLOWINGSTATETOBESTOREDINACENTRALREPOSITORY,SUCHASASEPARATEPROCESSORADATABASETHATALLSERVERSCANACCESSASPNETDEALSWITHTHESEPROBLEMSANDMANYMOREBYINTRODUCINGACOMPLETELYNEWMODELFORWEBPAGESTHISMODELISBASEDONAREMARKABLEPIECEOFTECHNOLOGYCALLEDTHENETFRAMEWORKYOUSHOULDUNDERSTANDTHATTHENETFRAMEWORKISREALLYACLUSTEROFSEVERALTEC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簡(jiǎn)介：1MSDN雜志2006年12月作者RICKSTRAHL用自定義控件簡(jiǎn)化ASPNET20中的數(shù)據(jù)綁定ASPNET20包含許多新的數(shù)據(jù)綁定功能，可以簡(jiǎn)化各種數(shù)據(jù)庫(kù)綁定方案。不幸的是，一種常見簡(jiǎn)單控件數(shù)據(jù)綁定方案并沒有太大改變。雖然這在窗體的WEB應(yīng)用程序中是一種常見的方案，但它仍然是一個(gè)手動(dòng)和耗時(shí)的過程。簡(jiǎn)單控件數(shù)據(jù)綁定是指將單個(gè)值綁定到控件屬性的過程。例如，文本框、復(fù)選框、單選按鈕或列表控件的選定值之類的窗體控件綁定到單個(gè)數(shù)據(jù)或?qū)ο笾?。這將使簡(jiǎn)單控件數(shù)據(jù)綁定得到明顯改進(jìn),如果能夠以一致的方式來確定性地處理數(shù)據(jù)綁定、管理錯(cuò)誤的捕獲和顯示，在本文中，我介紹了一種自定義擴(kuò)展程序控件，可以從數(shù)據(jù)或?qū)ο蠼壎ㄈ我鈫蝹€(gè)值到任意控件屬性。它可以擴(kuò)展和支持WEB窗體上的任何現(xiàn)有控件在這一過程中，我還將證明一種靈活而直觀的方法，該方法可以讓數(shù)據(jù)綁定和取消綁定、驗(yàn)證、錯(cuò)誤處理以及在基于窗體的WEB界面中顯示錯(cuò)誤等行為保持一致。我也將深入探討這個(gè)細(xì)節(jié),就是控件是怎樣成的并介紹其中一些有趣的優(yōu)點(diǎn)。WWDATABINDER控件用于簡(jiǎn)單控件數(shù)據(jù)綁定。具體而言，該控件管理的綁定的概念類似于“將DATAROW的COMPANYNAME值綁定到TEXTBOX的TEXT屬性”或者“將ITEMENTITYPK屬性綁定到DROPDOWN列表的SELECTEDVALUE屬性”。該控件管理的是將指定數(shù)據(jù)值綁定到指定控件屬性的過程，以及取消綁定數(shù)據(jù)值回到底層數(shù)據(jù)項(xiàng)的過程。這是真正的兩種方式的數(shù)據(jù)綁定。數(shù)據(jù)綁定的問題ASPNE提供了適當(dāng)?shù)谋镜刂С?。它的本地?cái)?shù)據(jù)綁定表達(dá)式使用或直接頁(yè)面表達(dá)式（如）將數(shù)據(jù)綁定到控件屬性。您可以啟動(dòng)數(shù)據(jù)綁定過程,對(duì)頁(yè)面的任何控件調(diào)用DATABIND方法來。此方法對(duì)于入站綁定而言非常好用。盡管如此，也不能取消綁定并使數(shù)據(jù)重新成為底層數(shù)據(jù)字段或?qū)傩?。ASPNET20介紹了GRIDVIEW、FORMVIEW和DETAILSVIEW控件，它們使你使用MOREDATABINDINGITEMS該集合建立DATABINDER應(yīng)用的各個(gè)綁定。雖然WWDATABINDER可以擴(kuò)展現(xiàn)有的控件，但只有在窗體上任意給定控件的DATABINDINGITEM擴(kuò)展程序?qū)傩陨巷@式設(shè)置屬

簡(jiǎn)介：畢業(yè)設(shè)計(jì)（論計(jì)（論文）文）英文翻譯學(xué)院院信息技術(shù)學(xué)院專業(yè)業(yè)計(jì)算機(jī)科學(xué)與技術(shù)學(xué)生姓名王佩學(xué)號(hào)0506120502題目基于WEB的網(wǎng)絡(luò)商品銷售系統(tǒng)指導(dǎo)教師張漪日期2009年2月27日MICROSOFTINTERNETINFORMATIONSERVERVERSION30/40ONWINDOWSNTSERVERMICROSOFTPEERWEBSERVICESVERSION30ONWINDOWSNTWORKSTATIONMICROSOFTPERSONALWEBSERVERONWINDOWS95/98正如前文所述，與一般的程序不同，ASP程序無須編譯，ASP程序的控制部份，是使用VBSCRIPT、JSCRIPT等腳本語(yǔ)言來設(shè)計(jì)的，當(dāng)執(zhí)行ASP程序時(shí)，腳本程序?qū)⒁徽酌畎l(fā)送給腳本解釋器即腳本引擎，由腳本解釋器進(jìn)行翻譯并將其轉(zhuǎn)換成服務(wù)器所能執(zhí)行的命令。當(dāng)然，同其他編程語(yǔ)言一樣，ASP程序的編寫也遵循一定的規(guī)則，如果你想使用你所喜愛的腳本語(yǔ)言編寫ASP程序，那么你的服務(wù)器上必須要有能解釋這種腳本語(yǔ)言的腳本解釋器。當(dāng)你安裝ASP時(shí)，系統(tǒng)提供了兩種腳本語(yǔ)言VBSRCIPT和JSCRIPT，而VBSCRIPT則被作為系統(tǒng)默認(rèn)的腳本語(yǔ)言。你也可以根據(jù)自己的喜好改變系統(tǒng)默認(rèn)的腳本語(yǔ)言。ASP本身并不是一種腳本語(yǔ)言，它只是提供了一種使鑲嵌在HTML頁(yè)面中的腳本程序得以運(yùn)行的環(huán)境。但是，要學(xué)好ASP又必須掌握它的語(yǔ)法和規(guī)則。現(xiàn)在就讓我們開始一步一步地認(rèn)識(shí)并學(xué)習(xí)ACTIVESERVERPAGES。ASP程序其實(shí)是以擴(kuò)展名為ASP的純文本形式存在于WEB服務(wù)器上的，你可以用任何文本編輯器打開它，ASP程序中可以包含純文本、HTML標(biāo)記以及腳本命令。你只需將ASP程序放在WEB服務(wù)器的虛擬目錄下（該目錄必須要有可執(zhí)行權(quán)限），就可以通過WWW的方式訪問ASP程序了。要學(xué)好ASP程序的設(shè)計(jì)，必須掌握腳本的編寫，那么究竟什么是腳本呢其實(shí)腳本是由一系列的腳本命令所組成的，如同一般的程序，腳本可以將一個(gè)值賦給一個(gè)變量，可以命令WEB服務(wù)器發(fā)送一個(gè)值到客戶瀏覽器，還可以將一系列命令定義成一個(gè)過程。要編寫腳本，你必須要熟悉至少一門腳本語(yǔ)言，如VBSCRIPT。腳本語(yǔ)言是一種介乎于HTML和諸如JAVA、VISUALBASIC、C等編程語(yǔ)言之間的一種特殊的語(yǔ)言，盡管它更接近后者，但它卻不具有編程語(yǔ)言復(fù)雜、嚴(yán)謹(jǐn)?shù)恼Z(yǔ)法和規(guī)則。如前所述ASP所提供的腳本運(yùn)行環(huán)境可支持多種腳本語(yǔ)言，譬如JSCRIPT、REXX、PERL等等，這無疑給ASP程序設(shè)計(jì)者提供了廣泛的發(fā)揮余地。ASP的出現(xiàn)使得廣大WEB設(shè)計(jì)者不必在為客戶瀏覽器是否支持而擔(dān)心，實(shí)際上就算你在同一個(gè)ASP文件中使用不同的腳本語(yǔ)言，你都無須為此擔(dān)憂，因?yàn)樗械囊磺卸紝⒃诜?wù)器端進(jìn)行，客戶瀏覽器得到的只是一個(gè)程序執(zhí)行的結(jié)果，而你也只需在ASP中聲明使用不同的腳本語(yǔ)言即可。下面是一個(gè)典型的在同一ASP文件中使用兩種腳本語(yǔ)言的例子

簡(jiǎn)介：外文文獻(xiàn)閱讀與翻譯英文原文ASPTECHNOLOGYINTHEUSEOFECOMMERCEBASEDONASPTECHNOLOGYINECOMMERCEAPPLICATIONOFTHEPRELIMINARYSTUDY,INCONNECTIONWITHREALITY,GIVENTHEASPPAGESINTHEDESIGNOFSOMEOFTHEKEYTECHNOLOGIESANDMETHODSTODAY,INFORMATIONTECHNOLOGYANDNETWORKTECHNOLOGYISTHERAPIDDEVELOPMENTANDWIDEAPPLICATIONOFTHESETECHNOLOGIESONBUSINESSAPPLICATIONSHAVEAMOREPROFOUNDIMPACT,ISALSOCHANGINGPEOPLESWORKANDLIVING,LEARNINGANDMODESOFCOMMUNICATION,ECOMMERCEAPPLICATIONSOFHEALTH,THROUGHTHEELECTRONICBUSINESSFORMOREUSEFULINFORMATIONANDNECESSARYCOMMODITIESAREGENERALLYCONCERNEDABOUTTHEISSUE,THEPAPERONTHISPRELIMINARYSTUDY1ASPTECHNICALOVERVIEWASPFULLNAMEOFACTIVESERVERPAGESDYNAMICPAGESISAMICROSOFTINTRODUCEDTOREPLACETHECGICOMMONGATEWAYINTERFACECOMMONGATEWAYINTERFACEOFTHENEWTECHNOLOGYATPRESENT,INTERNETONMANYWINDOWSBASEDPLATFORMFORMOSTOFTHEWEBSITEOFASPTECHNOLOGYTODEVELOPASPISASERVERSIDESCRIPTINTHEOPERATINGENVIRONMENT,THEADOPTIONOFTHEENVIRONMENT,USERSCANCREATEANDRUNDYNAMIC,INTERACTIVEWEBSERVERAPPLICATIONS,GREATLYFACILITATETHEMANAGERSANDVIEWERSUNDERNORMALCIRCUMSTANCES,THEUSERTHROUGHTHEWEBBROWSERTHATMOSTOFASTATICSTATICTHECONTENTOFTHEINTERNETBROWSERWHENTHEHTTPPROTOCOLTOTHESITESERVERREQUESTSFORHOMECONTENTS,SITESERVERRECEIPTOFTHEREQUEST,AFTERTHEORIGINALTRANSMISSIONHASBEENDESIGNEDSTATICHTMLDOCUMENTSANDDATAFORTHEBROWSER,USERSSEETHESTAFFTHROUGHTHESERVERFORGOODCONTENTHOMEA“STATIC“SITE,HOMETOUPDATETHECONTENTSOFTHESITEMUSTBEINTHESERVERSIDEMANAGEMENTTOUPDATEITSMANUALWITHTHEHTMLDOCUMENTDATA,REALTIMEWORSEWITHTHEDEVELOPMENTOFWEBAPPLICATIONS,THEUSERWOULDLIKETOSEEONREQUESTANDDYNAMICALLYGENERATEDHOME,FOREXAMPLE,RESPONDTOTHEREQUIREMENTSOFUSERSQUERYTHEDATABASETOGENERATESTATEMENTSINSUCHCIRCUMSTANCES,WHENUSERSFILLINTHEBROWSERONTHEDATASUBMITTEDINTHEFORMOFCONTENT,TOPROVIDEANHTTPREQUEST,THESITERECEIVEDDIRECTLYTOEXPLAINOPERATION3THEUSEOFADODBCOMPONENTSEASYACCESSTOTHEDATABASE4OBJECTORIENTEDPROGRAMMING,WHICHCANBEEXPANDEDACTIVEXSERVERCOMPONENTFUNCTIONS,INTHEORY,CANACHIEVEANYFUNCTION5DOESNOTEXISTBROWSERCOMPATIBILITYPROBLEMS,ASPISINTHEPROCESSOFSERVERSIDERUN6CANBEHIDDENCODE,THEPROTECTIONOFLABORRESULTS2．ECOMMERCEDATAACCESSINECOMMERCESYSTEMS,WEBPROVIDESCUSTOMERSWITHANEFFECTIVEMEANSOFCOMMUNICATION,THEUSEOFWEBTECHNOLOGY,ANDWEBSERVERSANDDATABASESYSTEMCONNECTEDTOCOMPLETETHEPROCESSINGOFTHEDATAQUERY,THEUSERCANOPERATEEASYTOLEARNTHROUGHTHEBROWSERTOQUERYADDRESSTHENEEDSOFVARIOUSDATAASPISAREALIZATIONOFWEBSERVERANDDATABASECONNECTIVITYMIDDLEWARETECHNOLOGY,BUTONTHEWINDOWSPLATFORMITISRELATIVELYGATEWAYANDSERVERMODELHASALARGEREXPANSIONOFTHEMERITSGATEWAYISTHEMOSTIMPORTANTFEATUREOFITSPLATFORMINDEPENDENT,BUTGATEWAYARENORMALLYDIFFICULTTOPREPAREANDCHANGEGATEWAYPROCESSUSUALLYISANINDEPENDENTPROCESS,ANDNOTHTMLDOCUMENTTOGETHER,ITNEEDSSUCHASC,C,VB,ANDOTHERLANGUAGESTOWRITEASTANDALONEAPPLICATION,ANDASPAPPLICATIONSTOCHANGETHISASPCANBEUSEDNOTONLYTOREADTHEACCESSANDSQLSERVERDATABASE,BUTALSOCANREADOTHERODBCOPENDATABASECONNECTOPENINTERNETDATABASECOMPLIANTDATABASEINASPACCESSTHEDATABASETHROUGHTHEADOACTIVEXDATABASEOBJECTACTIVITYDATAOBJECTANDTRANSACTIONPROCESSINGTOACHIEVETHESTATEMENTADOISAMICROSOFTOPERATINGSUPPORTEDBYTHEDATABASEAPPROACHISASCALABLEANDEASYTOUSEDATABASEACCESSWILLBEADDEDTOTHEWEBPAGEOFTHETECHNOLOGYADOOBJECTSANDTHEUSEOFDAODATAACCESSOBJECT,RDOLONGDISTANCEDATAOBJECTSIMILARTOTHEWAYINASP,ADOCANBESEENASASERVERCOMPONENT,MORESIMPLE,ISASERIESOFTARGETS,THEAPPLICATIONOFTHESEPOWERFULOBJECTS,YOUCANEASILYCOMPLETETHECOMPLEXOPERATIONOFTHEDATABASE,TOACHIEVETHEPURPOSEOFACCESSTODATA3ASPINTHEAPPLICATIONOFECOMMERCEINECOMMERCE,TOUSERS,ONLINEINFORMATIONFORTHEPURPOSEOFTHESEARCHFORTHENEEDSOFTHEIRPRODUCTSORSERVICES,ANDFORGOODSORSERVICESPROVIDER,ITSOBJECTIVEISTOSELLTHEIRCUSTOMERSTHEPRODUCTSORSERVICESTHEREFORE,THROUGHTHEBROWSERALLOWSUSERSTOQUERYTHESERVERBACKENDDATABASEISTHATMANYWEBSERVICEPROVIDERSMUSTHAVE

簡(jiǎn)介：1附件1外文資料翻譯譯文ASPNETASPNET概述概述ASPNET是一個(gè)統(tǒng)一的WEB開發(fā)模型，它包括您使用盡可能少的代碼生成企業(yè)級(jí)WEB應(yīng)用程序所必需的各種服務(wù)。ASPNET作為NETFRAMEWORK的一部分提供。當(dāng)您編寫ASPNET應(yīng)用程序的代碼時(shí)，可以訪問NETFRAMEWORK中的類。您可以使用與公共語(yǔ)言運(yùn)行庫(kù)CLR兼容的任何語(yǔ)言來編寫應(yīng)用程序的代碼，這些語(yǔ)言包括MICROSOFTVISUALBASIC、C、JSCRIPTNET和J。使用這些語(yǔ)言，可以開發(fā)利用公共語(yǔ)言運(yùn)行庫(kù)、類型安全、繼承等方面的優(yōu)點(diǎn)的ASPNET應(yīng)用程序。ASPNET包括?頁(yè)和控件框架?ASPNET編譯器?安全基礎(chǔ)結(jié)構(gòu)?狀態(tài)管理功能?應(yīng)用程序配置?運(yùn)行狀況監(jiān)視和性能功能?調(diào)試支持?XMLWEBSERVICES框架?可擴(kuò)展的宿主環(huán)境和應(yīng)用程序生命周期管理?可擴(kuò)展的設(shè)計(jì)器環(huán)境ASPNET頁(yè)和控件框架是一種編程框架，它在WEB服務(wù)器上運(yùn)行，可以動(dòng)態(tài)地生成和呈現(xiàn)ASPNET網(wǎng)頁(yè)。可以從任何瀏覽器或客戶端設(shè)備請(qǐng)求ASPNET網(wǎng)頁(yè)，ASPNET會(huì)向請(qǐng)求瀏覽器呈現(xiàn)標(biāo)記（例如HTML）。通常，您可以對(duì)多個(gè)瀏覽器使用相同的頁(yè)，因?yàn)锳SPNET會(huì)為發(fā)出請(qǐng)求的瀏覽器呈現(xiàn)適當(dāng)?shù)臉?biāo)記。但是，您可以針對(duì)諸如MICROSOFTINTERNETEXPLORER6的特定瀏覽器設(shè)計(jì)3庫(kù)使用ASPNETFORMS身份驗(yàn)證和ASPNET成員資格來管理身份驗(yàn)證。此外，可以使用WINDOWS組或您自己的自定義角色數(shù)據(jù)庫(kù)（使用ASPNET角色）來管理WEB應(yīng)用程序的功能和信息方面的授權(quán)。您可以根據(jù)應(yīng)用程序的需要方便地移除、添加或替換這些方案。ASPNET始終使用特定的WINDOWS標(biāo)識(shí)運(yùn)行，因此，您可以通過使用WINDOWS功能（例如NTFS訪問控制列表ACL、數(shù)據(jù)庫(kù)權(quán)限等等）來保護(hù)應(yīng)用程序的安全。ASPNET提供了內(nèi)部狀態(tài)管理功能，它使您能夠存儲(chǔ)頁(yè)請(qǐng)求期間的信息，例如客戶信息或購(gòu)物車的內(nèi)容。您可以保存和管理應(yīng)用程序特定、會(huì)話特定、頁(yè)特定、用戶特定和開發(fā)人員定義的信息。此信息可以獨(dú)立于頁(yè)上的任何控件。ASPNET提供了分布式狀態(tài)功能，使您能夠管理一臺(tái)計(jì)算機(jī)或數(shù)臺(tái)計(jì)算機(jī)上同一應(yīng)用程序的多個(gè)實(shí)例的狀態(tài)信息。通過ASPNET應(yīng)用程序使用的配置系統(tǒng)，可以定義WEB服務(wù)器、網(wǎng)站或單個(gè)應(yīng)用程序的配置設(shè)置。您可以在部署ASPNET應(yīng)用程序時(shí)定義配置設(shè)置，并且可以隨時(shí)添加或修訂配置設(shè)置，且對(duì)運(yùn)行的WEB應(yīng)用程序和服務(wù)器具有最小的影響。ASPNET配置設(shè)置存儲(chǔ)在基于XML的文件中。由于這些XML文件是ASCII文本文件，因此對(duì)WEB應(yīng)用程序進(jìn)行配置更改比較簡(jiǎn)單。您可以擴(kuò)展配置方案，使其符合自己的要求。ASPNET包括可監(jiān)視ASPNET應(yīng)用程序的運(yùn)行狀況和性能的功能。使用ASPNET運(yùn)行狀況監(jiān)視可以報(bào)告關(guān)鍵事件，這些關(guān)鍵事件提供有關(guān)應(yīng)用程序的運(yùn)行狀況和錯(cuò)誤情況的信息。這些事件顯示診斷和監(jiān)視特征的組合，并在記錄哪些事件以及如何記錄事件等方面提供了高度的靈活性。ASPNET支持兩組可供應(yīng)用程序訪問的性能計(jì)數(shù)器?ASPNET系統(tǒng)性能計(jì)數(shù)器組?ASPNET應(yīng)用程序性能計(jì)數(shù)器組

簡(jiǎn)介：1外文原文ANINTRODUCTIONTOJAVAPROGRAMMINGWHATISJAVAJAVAISANOBJECTORIENTEDPROGRAMMINGLANGUAGEDEVELOPEDBYSUNMICROSYSTEMS,ACOMPANYBESTKNOWNFORITSHIGHENDUNIXWORKSTATIONSMODELEDAFTERC,THEJAVALANGUAGEWASDESIGNEDTOBESMALL,SIMPLE,ANDPORTABLEACROSSPLATFORMSANDOPERATINGSYSTEMS,BOTHATTHESOURCEANDATTHEBINARYLEVELMOREABOUTTHISLATERJAVAISOFTENMENTIONEDINTHESAMEBREATHASHOTJAVA,AWORLDWIDEWEBBROWSERFROMSUNLIKENETSCAPEORMOSAICSEEFIGURE11WHATMAKESHOTJAVADIFFERENTFROMMOSTOTHERBROWSERSISTHAT,INADDITIONTOALLITSBASICWEBFEATURES,ITCANALSODOWNLOADANDPLAYAPPLETSONTHEREADER’SSYSTEMAPPLETSAPPEARINAWEBPAGEMUCHINTHESAMEWAYASIMAGESDO,BUTUNLIKEIMAGES,APPLETSAREDYNAMICANDINTERACTIVEAPPLETSCANBEUSEDTOCREATEANIMATIONS,FIGURES,ORAREASTHATCANRESPONDTOINPUTFROMTHEREADER,GAMES,OROTHERINTERACTIVEEFFECTSONTHESAMEWEBPAGESAMONGTHETEXTANDGRAPHICSALTHOUGHHOTJAVAWASTHEFIRSTWORLDWIDEWEBBROWSERTOBEABLETOPLAYJAVAAPPLETS,JAVASUPPORTISRAPIDLYBECOMINGAVAILABLEINOTHERBROWSERSNETSCAPE20PROVIDESSUPPORTFORJAVAAPPLETS,ANDOTHERBROWSERDEVELOPERSHAVEALSOANNOUNCEDSUPPORTFORJAVAINFORTHCOMINGPRODUCTSJAVA’SPAST,PRESENT,ANDFUTURETHEJAVALANGUAGEWASDEVELOPEDATSUNMICROSYSTEMSIN1991ASPARTOFARESEARCHPROJECTTODEVELOPSOFTWAREFORCONSUMERELECTRONICSDEVICESTELEVISIONSETS,VCRS,TOASTERS,ANDTHEOTHERSORTSOFMACHINESYOUCANBUYATANYDEPARTMENTSTOREJAVA’SGOALSATTHATTIMEWERETOBESMALL,FAST,EFFICIENT,ANDEASILYPORTABLETOAWIDERANGEOFHARDWAREDEVICESITISTHOSESAMEGOALSTHATMADEJAVAANIDEALLANGUAGEFORDISTRIBUTINGEXECUTABLEPROGRAMSVIATHEWORLDWIDEWEB,ANDALSOAGENERALPURPOSEPROGRAMMINGLANGUAGEFORDEVELOPINGPROGRAMSTHATAREEASILYUSABLEANDPORTABLEACROSSDIFFERENTPLATFORMSTHEJAVALANGUAGEWASUSEDINSEVERALPROJECTSWITHINSUN,BUTDIDNOTGETVERYMUCHCOMMERCIALATTENTIONUNTILITWASPAIREDWITHHOTJAVAHOTJAVAWASWRITTENIN1994INAMATTEROFMONTHS,BOTHASAVEHICLEFORDOWNLOADINGANDRUNNINGAPPLETSANDALSOASANEXAMPLEOFTHESORTOFCOMPLEXAPPLICATIONTHATCANBEWRITTENINJAVAATTHETIMETHISBOOKISBEINGWRITTEN,SUNHASRELEASEDTHEBETAVERSIONOFTHEJAVA3PLATFORMINDEPENDENCEISONEOFTHEMOSTSIGNIFICANTADVANTAGESTHATJAVAHASOVEROTHERPROGRAMMINGLANGUAGES,PARTICULARLYFORSYSTEMSTHATNEEDTOWORKONMANYDIFFERENTPLATFORMSJAVAISPLATFORMINDEPENDENTATBOTHTHESOURCEANDTHEBINARYLEVELNEWTERMPLATFORMINDEPENDENCEISAPROGRAM’SCAPABILITYOFMOVINGEASILYFROMONECOMPUTERSYSTEMTOANOTHERATTHESOURCELEVEL,JAVA’SPRIMITIVEDATATYPESHAVECONSISTENTSIZESACROSSALLDEVELOPMENTPLATFORMSJAVA’SFOUNDATIONCLASSLIBRARIESMAKEITEASYTOWRITECODETHATCANBEMOVEDFROMPLATFORMTOPLATFORMWITHOUTTHENEEDTOREWRITEITTOWORKWITHTHATPLATFORMPLATFORMINDEPENDENCEDOESN’TSTOPATTHESOURCELEVEL,HOWEVERJAVABINARYFILESAREALSOPLATFORMINDEPENDENTANDCANRUNONMULTIPLEPROBLEMSWITHOUTTHENEEDTORECOMPILETHESOURCEHOWDOESTHISWORKJAVABINARYFILESAREACTUALLYINAFORMCALLEDBYTECODESNEWTERMBYTECODESAREASETOFINSTRUCTIONSTHATLOOKSALOTLIKESOMEMACHINECODES,BUTTHATISNOTSPECIFICTOANYONEPROCESSORNORMALLY,WHENYOUCOMPILEAPROGRAMWRITTENINCORINMOSTOTHERLANGUAGES,THECOMPILERTRANSLATESYOURPROGRAMINTOMACHINECODESORPROCESSORINSTRUCTIONSTHOSEINSTRUCTIONSARESPECIFICTOTHEPROCESSORYOURCOMPUTERISRUNNINGSO,FOREXAMPLE,IFYOUCOMPILEYOURCODEONAPENTIUMSYSTEM,THERESULTINGPROGRAMWILLRUNONLYONOTHERPENTIUMSYSTEMSIFYOUWANTTOUSETHESAMEPROGRAMONANOTHERSYSTEM,YOUHAVETOGOBACKTOYOURORIGINALSOURCE,GETACOMPILERFORTHATSYSTEM,ANDRECOMPILEYOURCODEFIGURE12SHOWSTHERESULTOFTHISSYSTEMMULTIPLEEXECUTABLEPROGRAMSFORMULTIPLESYSTEMSTHINGSAREDIFFERENTWHENYOUWRITECODEINJAVATHEJAVADEVELOPMENTENVIRONMENTHASTWOPARTSAJAVACOMPILERANDAJAVAINTERPRETERTHEJAVACOMPILERTAKESYOURJAVAPROGRAMANDINSTEADOFGENERATINGMACHINECODESFROMYOURSOURCEFILES,ITGENERATESBYTECODESJAVAISOBJECTORIENTEDTOSOME,OBJECTORIENTEDPROGRAMMINGOOPTECHNIQUEISMERELYAWAYOFORGANIZINGPROGRAMS,ANDITCANBEACCOMPLISHEDUSINGANYLANGUAGEWORKINGWITHAREALOBJECTORIENTEDLANGUAGEANDPROGRAMMINGENVIRONMENT,HOWEVER,ENABLESYOUTOTAKEFULLADVANTAGEOFOBJECTORIENTEDMETHODOLOGYANDITSCAPABILITIESOFCREATINGFLEXIBLE,MODULARPROGRAMSANDREUSINGCODEMANYOFJAVA’SOBJECTORIENTEDCONCEPTSAREINHERITEDFROMC,THELANGUAGEONWHICHITISBASED,BUTITBORROWSMANYCONCEPTSFROMOTHEROBJECTORIENTEDLANGUAGESASWELLLIKEMOSTOBJECTORIENTEDPROGRAMMINGLANGUAGES,JAVAINCLUDESASETOFCLASSLIBRARIESTHATPROVIDEBASICDATATYPES,SYSTEMINPUTANDOUTPUTCAPABILITIES,ANDOTHERUTILITYFUNCTIONSTHESEBASICCLASSESAREPARTOFTHEJAVADEVELOPMENTKIT,WHICHALSOHASCLASSESTOSUPPORTNETWORKING,COMMONINTERNETPROTOCOLS,ANDUSERINTERFACETOOLKITFUNCTIONSBECAUSETHESECLASSLIBRARIESAREWRITTENIN

簡(jiǎn)介：中文中文4150字畢業(yè)論文設(shè)計(jì)英文翻譯材料學(xué)院計(jì)算機(jī)科學(xué)學(xué)院專業(yè)自動(dòng)化年級(jí)2011學(xué)生姓名學(xué)號(hào)指導(dǎo)教師姓名職稱講師THETYPEOFTHEHTTPHANDLERFORAPARTICULARPAGEDEPENDSONTHEURLTHEFIRSTTIMETHEURLISINVOKED,ANEWCLASSISCOMPOSEDANDDYNAMICALLYCOMPILEDTOANASSEMBLYTHESOURCECODEOFTHECLASSISTHEOUTCOMEOFAPARSINGPROCESSTHATEXAMINESTHEASPXSOURCESTHECLASSISDEFINEDASPARTOFTHENAMESPACEASPANDISGIVENANAMETHATMIMICSTHEORIGINALURLFOREXAMPLE,IFTHEURLENDPOINTISPAGEASPX,THENAMEOFTHECLASSISASPPAGE_ASPXTHECLASSNAME,THOUGH,CANBEPROGRAMMATICALLYCONTROLLEDBYSETTINGTHECLASSNAMEATTRIBUTEINTHEPAGEDIRECTIVETHEBASECLASSFORTHEHTTPHANDLERISPAGETHISCLASSDEFINESTHEMINIMUMSETOFMETHODSANDPROPERTIESSHAREDBYALLPAGEHANDLERSTHEPAGECLASSIMPLEMENTSTHEIHTTPHANDLERINTERFACEUNDERACOUPLEOFCIRCUMSTANCES,THEBASECLASSFORTHEACTUALHANDLERISNOTPAGEBUTADIFFERENTCLASSTHISHAPPENS,FOREXAMPLE,IFCODEBEHINDISUSEDCODEBEHINDISADEVELOPMENTTECHNIQUETHATINSULATESTHECODENECESSARYTOAPAGEINTOASEPARATECORMICROSOFTVISUALBASIC?NETCLASSTHECODEOFAPAGEISTHESETOFEVENTHANDLERSANDHELPERMETHODSTHATACTUALLYCREATETHEBEHAVIOROFTHEPAGETHISCODECANBEDEFINEDINLINEUSINGTHETAGORPLACEDINANEXTERNALCLASSTHECODEBEHINDCLASSACODEBEHINDCLASSISACLASSTHATINHERITSFROMPAGEANDSPECIALIZESITWITHEXTRAMETHODSWHENSPECIFIED,THECODEBEHINDCLASSISUSEDASTHEBASECLASSFORTHEHTTPHANDLERTHEOTHERSITUATIONINWHICHTHEHTTPHANDLERISNOTBASEDONPAGEISWHENTHECONFIGURATIONFILEOFTHEAPPLICATIONCONTAINSAREDEFINITIONFORTHEPAGEBASETYPEATTRIBUTEINTHESECTIONTHEPAGEBASETYPEATTRIBUTEINDICATESTHETYPEANDTHEASSEMBLYTHATCONTAINSTHEBASECLASSFORPAGEHANDLERSDERIVEDFROMPAGE,THISCLASSCANAUTOMATICALLYENDOWHANDLERSWITHACUSTOMANDEXTENDEDSETOFMETHODSANDPROPERTIESTHEPAGELIFECYCLEONCETHEHTTPPAGEHANDLERCLASSISFULLYIDENTIFIED,THEASPNETRUNTIMECALLSTHEHANDLERSPROCESSREQUESTMETHODTOPROCESSTHEREQUESTNORMALLY,THEREISNONEEDTOCHANGETHEIMPLEMENTATIONOFTHEMETHODASITISPROVIDEDBYTHEPAGECLASSTHISIMPLEMENTATIONBEGINSBYCALLINGTHEMETHODFRAMEWORKINITIALIZE,WHICHBUILDSTHECONTROLSTREEFORTHEPAGETHEMETHODISAPROTECTEDANDVIRTUALMEMBEROFTHETEMPLATECONTROLCLASSTHECLASSFROMWHICHPAGEITSELFDERIVESANYDYNAMICALLYGENERATEDHANDLERFORANASPXRESOURCEOVERRIDESFRAMEWORKINITIALIZEINTHISMETHOD,THEWHOLECONTROLTREEFORTHEPAGEISBUILTNEXT,PROCESSREQUESTMAKESTHEPAGETRANSITVARIOUSPHASESINITIALIZATION,LOADINGOFVIEWSTATEINFORMATIONANDPOSTBACKDATA,LOADINGOFTHEPAGESUSERCODEANDEXECUTIONOFPOSTBACKSERVERSIDEEVENTSAFTERTHAT,THEPAGEENTERSINRENDERINGMODETHEUPDATEDVIEWSTATEISCOLLECTEDTHEHTMLCODEISGENERATEDANDTHENSENTTOTHEOUTPUTCONSOLEFINALLY,THEPAGEISUNLOADEDANDTHEREQUESTISCONSIDEREDCOMPLETELYSERVED

簡(jiǎn)介：ASP外文翻譯原文XINXIASD1ASPASP外文翻譯外文翻譯原文原文ENGLISHEDEVELOPWEBAPPLICATIONPROGRAMUSINGASPTHEARCHITECTURETHATMUSTFIRSTESTABLISHWEBAPPLICATIONNOWINAPPLICATIONFREQUENTLYWITHTOHAVETWOTHEARCHITECTUREOFC/SANDTHEARCHITECTUREOFB/SCLIENT/SERVERANDCUSTOMEREND/SERVERHOLDTHEARCHITECTUREOFC/STHECUSTOMER/SERVERSTRUCTUREOFTWOFLOORCUSTOMER/SERVERCLIENT/SERVERMODELISAKINDOFGOODSOFTWAREARCHITECTURE,ITISTHEONEOFBESTAPPLICATIONPATTERNOFNETWORKFROMTECHNOLOGY,SEETHATITISALOGICCONCEPT,DENOTEWILLAAPPLICATIONMANYTASKSOFDECOMPOSINGDIFFERENCECARRYOUT,COMMONCOMPLETIONISENTIRETOAPPLYTHEFUNCTIONOFTASKONEACHNETWORKMAINCOMPUTEROFWEBSITE,RESOURCEHARDWARE,SOFTWAREANDDATADIVIDEINTOSTEP,ISNOTBALANCED,UNDERCUSTOMER/SERVERSTRUCTURE,WITHOUTTHECLIENTCOMPUTEROFRESOURCETHROUGHSENDINGREQUESTTOTHESERVERTHATHASRESOURCE,GETRESOURCEREQUEST,SOMEETTHERESOURCEDISTRIBUTIONINNETWORKNOTBALANCEDNESSWITHTHISKINDOFSTRUCTURE,CANSYNTHESIZEVARIOUSCOMPUTERSTOCOOPERATEWITHWORK,LETITEACHCAN,REALIZETHESCALEFORTHESYSTEMOFCOMPUTEROPTIMIZATIONRIGHTSIZINGWITHSCALEREDUCETOMELTDOWNSIZINGPICTUREISASFOLLOWSITISMOSTOFTODIVIDEINTOCOMPUTERNETWORKAPPLICATIONINTOTWO,INWHICHTHERESOURCEANDFUNCTIONTHATPARTSUPPORTSMANYUSERSTOSHARE,ITISREALIZEDBYSERVERANOTHERPARTFACESEVERYUSER,ISREALIZEDBYCLIENTCOMPUTER,ALSONAMELY,CLIENTCOMPUTERISUSUALTOCARRYOUTPROSCENIUMFUNCTION,REALIZESMANMACHINEINTERACTIONTHROUGHUSERINTERFACE,ORISTHEAPPLICATIONPROGRAMOFSPECIFICCONDUCTEDUSERANDSERVERUSUALLYCARRIESOUTTHEFUNCTIONOFBACKSTAGESUPPORTER,MANAGESTHEOUTSIDEREQUESTCONCERNINGSETINGUP,ACCEPTINGANDREPLYINGUSERTHATSHAREDFORACOMPUTER,ITCANHAVEDOUBLEFUNCTION,ISBEINGCERTAINANDMOMENTARYTOCARVETOACTASSERVER,ANDAGAINBECOMESCLIENTCOMPUTERINANOTHERTIMECUSTOMER/SERVERTYPECOMPUTERDIVIDEINTOTWOKINDS,ONESIDEWHOOFFERSSERVICEISCALLEDASSERVER,ASKSONESIDEOFSERVICETOBECALLEDASCUSTOMERTOBEABLETOOFFERSERVICE,SERVERONESIDEMUSTHAVECERTAINHARDWAREANDCORRESPONDINGSERVERSOFTWAREALSO,CUSTOMERONESIDEMUSTALSOHAVECERTAINHARDWAREANDCORRESPONDINGCUSTOMERSOFTWARETHEREMUSTBEAAGREEMENTBETWEENSERVERANDCUSTOMER,BOTHSIDESCOMMUNICATEACCORDINGTOTHISAGREEMENTAPPLYCUSTOMER/SERVERMODELININTERNETSERVICE,THERELATIONBETWEENASP外文翻譯原文XINXIASD3UNDERTHETHREELAYERARCHITECTUREOFBROWSER/SERVER,EXPRESSLAYERPRESENTATIOON,FUNCTIONLAYERBUSINESSLOGIC,DATALAYERDATASERVICEHAVEBEENCUTTHEUNITOF3RELATIVEINDEPENDENCESITISTHEFIRSTLAYEROFTOEXPRESSLAYERWEBBROWSERINEXPRESSINGLAYERCONTAINSYSTEMSHOWLOGIC,LOCATEINCUSTOMERENDITSTASKISTOSUGGESTBYWEBBROWSERTOTHECERTAINAWEBSERVERONNETWORKTHATSERVICEISASKED,AFTERVERIFYINGFORUSERIDENTITY,WEBSERVERDELIVERSNEEDEDHOMEPAGEWITHHTTPAGREEMENTTOCUSTOMEREND,CLIENTCOMPUTERACCEPTTHEHOMEPAGEFILETHATPASSED,ANDSHOWITINWEBBROWSERONSECONDLAYERFUNCTIONLAYERHAVETHEWEBSERVEROFTHEAPPLICATIONFUNCTIONOFPROGRAMEXTENSIONINFUNCTIONLAYERCONTAINTHESYSTEMATICHANDLINGOFGENERALAFFAIRSLOGIC,LOCATEINWEBSERVERENDITSTASKISTHEREQUESTCONCERNINGACCEPTINGUSER,NEEDTOBEFIRSTCONDUCTEDANDCORRESPONDINGTOEXPANDAPPLICATIONPROGRAMANDDATABASETOCARRYOUTCONNECTION,PASSESTHROUGHTHEWAIESSUCHASSQLTODATABASESERVERTOPUTFORWARDDATAHANDLINGTOAPPLYFOR,THENETCDATABASESERVERTHERESULTOFHANDLINGDATASUBMITTOWEBSERVER,DELIVERAGAINBYWEBSERVERTORETURNCUSTOMERENDTHENUMBEROFPLIESOF3THACCORDINGTOLAYERDATABASESERVERINDATALAYERCONTAINSYSTEMATICDATAHANDLINGLOGIC,LOCATEINDATABASESERVERENDITSTASKISTOACCEPTTHEREQUESTTHATWEBSERVERCONTROLSFORDATABASE,REALIZATIONISINQUIREDANDMODIFIEDFORDATABASE,UPDATEETCFUNCTION,SUBMITOPERATIONRESULTTOWEBSERVERCAREFULANALYSISISBEENEASYTOSEE,THEARCHITECTUREOFBROWSER/SERVEROFTHREELAYERISTHEHANDLINGOFGENERALAFFAIRSOFTHETWOLEVELSOFSTRUCTUREOFCLIENT/SERVERLOGICMODULARFROMTHETASKOFCLIENTCOMPUTERINSPLIT,FROMTHEFIRSTFLOOROFINDIVIDUALCOMPOSITIONBEARTHEPRESSUREOFITSTASKANDSUCHCLIENTCOMPUTERHAVEALLEVIATEDGREATLY,DISTRIBUTELOADBALANCEDLYANDHAVEGIVENWEBSERVER,SOFROMTHESTRUCTURALCHANGEOFCLIENT/SERVEROFORIGINALTWOFLOORTHESTRUCTUREOFBROWSER/SERVEROFTHREELAYERTHISKINDOFTHREELAYERARCHITECTUREFOLLOWINGPICTURESHOWSTHISKINDOFSTRUCTURENOTONLYCLIENTCOMPUTERFROMHEAVYBURDENANDTHEREQUIREMENTOFPERFORMANCETHATRISESCONTINUOUSLYFORITINLIBERATIONCOMEOUT,ALSODEFENDTECHNOLOGYPEOPLEFROMHEAVYMAINTENANCEUPGRADINGWORKINFREEONESELFSINCECLIENTCOMPUTERHANDLESGENERALAFFAIRS,LOGICPARTIALMINUTESHAVEGIVENFUNCTIONSERVER,MAKECLIENTCOMPUTERRIGHTOFF“SLENDER“ALOTOF,DONOTTAKETHERESPONSIBILITYFORHANDLINGCOMPLEXCALCULATIONANDDATAAGAINVISITETCCRUCIALGENERALAFFAIRS,ISRESPONSIBLETOSHOWPART,SO,MAINTENANCEPEOPLEDONOTRUSHABOUTAGAINFORTHEMAINTENANCEWORKOFPROGRAMBETWEENEVERYCLIENTCOMPUTER,ANDPUTMAJORENERGYINTHEPROGRAMONFUNCTIONSERVERUPDATEWORKBETWEENTHISKINDOFTHREELAYERSTRUCTURALLAYERANDLAYER,THEMUTUALLYINDEPENDENTCHANGEOFANYFIRSTFLOORDOESNOTAFFECTTHEFUNCTIONOFOTHERLAYERITHASCHANGEDTHEDEFECTOFTHETWOLEVELSOFARCHITECTUREOFCLIENT/SERVEROFTRADITIONFROMFOUNDATION,ITISTHETRANSFORMWITHDEEPONCEINAPPLICATIONSYSTEMATICARCHITECTURETHECONTRASTOFTWOARCHITECTURESTHEARCHITECTUREOFBROWSER/SERVERANDTHEARCHITECTUREOFCLIENT/SERVER

簡(jiǎn)介：1外文翻譯外文翻譯ENGLISHEDEVELOPWEBAPPLICATIONPROGRAMUSINGASPTHEARCHITECTURETHATMUSTFIRSTESTABLISHWEBAPPLICATIONNOWINAPPLICATIONFREQUENTLYWITHTOHAVETWOTHEARCHITECTUREOFC/SANDTHEARCHITECTUREOFB/SCLIENT/SERVERANDCUSTOMEREND/SERVERHOLDTHEARCHITECTUREOFC/STHECUSTOMER/SERVERSTRUCTUREOFTWOFLOORCUSTOMER/SERVERCLIENT/SERVERMODELISAKINDOFGOODSOFTWAREARCHITECTURE,ITISTHEONEOFBESTAPPLICATIONPATTERNOFNETWORKFROMTECHNOLOGY,SEETHATITISALOGICCONCEPT,DENOTEWILLAAPPLICATIONMANYTASKSOFDECOMPOSINGDIFFERENCECARRYOUT,COMMONCOMPLETIONISENTIRETOAPPLYTHEFUNCTIONOFTASKONEACHNETWORKMAINCOMPUTEROFWEBSITE,RESOURCEHARDWARE,SOFTWAREANDDATADIVIDEINTOSTEP,ISNOTBALANCED,UNDERCUSTOMER/SERVERSTRUCTURE,WITHOUTTHECLIENTCOMPUTEROFRESOURCETHROUGHSENDINGREQUESTTOTHESERVERTHATHASRESOURCE,GETRESOURCEREQUEST,SOMEETTHERESOURCEDISTRIBUTIONINNETWORKNOTBALANCEDNESSWITHTHISKINDOFSTRUCTURE,CANSYNTHESIZEVARIOUSCOMPUTERSTOCOOPERATEWITHWORK,LETITEACHCAN,REALIZETHESCALEFORTHESYSTEMOFCOMPUTEROPTIMIZATIONRIGHTSIZINGWITHSCALEREDUCETOMELTDOWNSIZINGPICTUREISASFOLLOWSITISMOSTOFTODIVIDEINTOCOMPUTERNETWORKAPPLICATIONINTOTWO,INWHICHTHERESOURCEANDFUNCTIONTHATPARTSUPPORTSMANYUSERSTOSHARE,ITISREALIZEDBYSERVERANOTHERPARTFACESEVERYUSER,ISREALIZEDBYCLIENTCOMPUTER,ALSONAMELY,CLIENTCOMPUTERISUSUALTOCARRYOUTPROSCENIUMFUNCTION,REALIZESMANMACHINEINTERACTIONTHROUGHUSERINTERFACE,ORISTHEAPPLICATIONPROGRAMOFSPECIFICCONDUCTEDUSERANDSERVERUSUALLYCARRIESOUTTHEFUNCTIONOFBACKSTAGESUPPORTER,MANAGESTHEOUTSIDEREQUESTCONCERNINGSETINGUP,ACCEPTINGANDREPLYINGUSERTHATSHAREDFORACOMPUTER,ITCANHAVEDOUBLEFUNCTION,ISBEINGCERTAINANDMOMENTARYTOCARVETOACTASSERVER,ANDAGAINBECOMESCLIENTCOMPUTERINANOTHERTIMECUSTOMER/SERVERTYPECOMPUTERDIVIDEINTOTWOKINDS,ONESIDEWHOOFFERSSERVICEISCALLEDASSERVER,ASKSONESIDEOFSERVICETOBECALLEDASCUSTOMERTOBEABLETOOFFERSERVICE,SERVERONESIDEMUSTHAVECERTAINHARDWAREANDCORRESPONDINGSERVERSOFTWAREALSO,CUSTOMERONESIDEMUSTALSOHAVECERTAINHARDWAREANDCORRESPONDINGCUSTOMERSOFTWARETHEREMUSTBEAAGREEMENTBETWEENSERVERANDCUSTOMER,BOTHSIDESCOMMUNICATEACCORDINGTOTHISAGREEMENTAPPLYCUSTOMER/SERVERMODELININTERNETSERVICE,THERELATIONBETWEEN3UNDERTHETHREELAYERARCHITECTUREOFBROWSER/SERVER,EXPRESSLAYERPRESENTATIOON,FUNCTIONLAYERBUSINESSLOGIC,DATALAYERDATASERVICEHAVEBEENCUTTHEUNITOF3RELATIVEINDEPENDENCESITISTHEFIRSTLAYEROFTOEXPRESSLAYERWEBBROWSERINEXPRESSINGLAYERCONTAINSYSTEMSHOWLOGIC,LOCATEINCUSTOMERENDITSTASKISTOSUGGESTBYWEBBROWSERTOTHECERTAINAWEBSERVERONNETWORKTHATSERVICEISASKED,AFTERVERIFYINGFORUSERIDENTITY,WEBSERVERDELIVERSNEEDEDHOMEPAGEWITHHTTPAGREEMENTTOCUSTOMEREND,CLIENTCOMPUTERACCEPTTHEHOMEPAGEFILETHATPASSED,ANDSHOWITINWEBBROWSERONSECONDLAYERFUNCTIONLAYERHAVETHEWEBSERVEROFTHEAPPLICATIONFUNCTIONOFPROGRAMEXTENSIONINFUNCTIONLAYERCONTAINTHESYSTEMATICHANDLINGOFGENERALAFFAIRSLOGIC,LOCATEINWEBSERVERENDITSTASKISTHEREQUESTCONCERNINGACCEPTINGUSER,NEEDTOBEFIRSTCONDUCTEDANDCORRESPONDINGTOEXPANDAPPLICATIONPROGRAMANDDATABASETOCARRYOUTCONNECTION,PASSESTHROUGHTHEWAIESSUCHASSQLTODATABASESERVERTOPUTFORWARDDATAHANDLINGTOAPPLYFOR,THENETCDATABASESERVERTHERESULTOFHANDLINGDATASUBMITTOWEBSERVER,DELIVERAGAINBYWEBSERVERTORETURNCUSTOMERENDTHENUMBEROFPLIESOF3THACCORDINGTOLAYERDATABASESERVERINDATALAYERCONTAINSYSTEMATICDATAHANDLINGLOGIC,LOCATEINDATABASESERVERENDITSTASKISTOACCEPTTHEREQUESTTHATWEBSERVERCONTROLSFORDATABASE,REALIZATIONISINQUIREDANDMODIFIEDFORDATABASE,UPDATEETCFUNCTION,SUBMITOPERATIONRESULTTOWEBSERVERCAREFULANALYSISISBEENEASYTOSEE,THEARCHITECTUREOFBROWSER/SERVEROFTHREELAYERISTHEHANDLINGOFGENERALAFFAIRSOFTHETWOLEVELSOFSTRUCTUREOFCLIENT/SERVERLOGICMODULARFROMTHETASKOFCLIENTCOMPUTERINSPLIT,FROMTHEFIRSTFLOOROFINDIVIDUALCOMPOSITIONBEARTHEPRESSUREOFITSTASKANDSUCHCLIENTCOMPUTERHAVEALLEVIATEDGREATLY,DISTRIBUTELOADBALANCEDLYANDHAVEGIVENWEBSERVER,SOFROMTHESTRUCTURALCHANGEOFCLIENT/SERVEROFORIGINALTWOFLOORTHESTRUCTUREOFBROWSER/SERVEROFTHREELAYERTHISKINDOFTHREELAYERARCHITECTUREFOLLOWINGPICTURESHOWSTHISKINDOFSTRUCTURENOTONLYCLIENTCOMPUTERFROMHEAVYBURDENANDTHEREQUIREMENTOFPERFORMANCETHATRISESCONTINUOUSLYFORITINLIBERATIONCOMEOUT,ALSODEFENDTECHNOLOGYPEOPLEFROMHEAVYMAINTENANCEUPGRADINGWORKINFREEONESELFSINCECLIENTCOMPUTERHANDLESGENERALAFFAIRS,LOGICPARTIALMINUTESHAVEGIVENFUNCTIONSERVER,MAKECLIENTCOMPUTERRIGHTOFF“SLENDER“ALOTOF,DONOTTAKETHERESPONSIBILITYFORHANDLINGCOMPLEXCALCULATIONANDDATAAGAINVISITETCCRUCIALGENERALAFFAIRS,ISRESPONSIBLETOSHOWPART,SO,MAINTENANCEPEOPLEDONOTRUSHABOUTAGAINFORTHEMAINTENANCEWORKOFPROGRAMBETWEENEVERYCLIENTCOMPUTER,ANDPUTMAJORENERGYINTHEPROGRAMONFUNCTIONSERVERUPDATEWORKBETWEENTHISKINDOFTHREELAYERSTRUCTURALLAYERANDLAYER,THEMUTUALLYINDEPENDENTCHANGEOFANYFIRSTFLOORDOESNOTAFFECTTHEFUNCTIONOFOTHERLAYERITHASCHANGEDTHEDEFECTOFTHETWOLEVELSOFARCHITECTUREOFCLIENT/SERVEROFTRADITIONFROMFOUNDATION,ITISTHETRANSFORMWITHDEEPONCEINAPPLICATIONSYSTEMATICARCHITECTURETHECONTRASTOFTWOARCHITECTURESTHEARCHITECTUREOFBROWSER/SERVERANDTHEARCHITECTUREOFCLIENT/SERVER

簡(jiǎn)介：本科畢業(yè)設(shè)計(jì)（論文）英文翻譯英文翻譯題目ASP的發(fā)展學(xué)生姓名專業(yè)班級(jí)學(xué)號(hào)院（系）指導(dǎo)教師（職稱）完成時(shí)間2011年5月26日2THESECONDTHEDEVELOPINGHISTORYANDCLASSIFICATIONOFASPSEENFROMTHEPRESENT,ASPISASEMERGINGANDPROPOSINGFORMALLYITISONLYATHINGFROMTHEENDOF1998TOTHEBEGINNINGOF1999OFAKINDOFMODEANDUNTILFROMTHEENDOF1999TOTHEBEGINNINGOF2000TOAGREATEXTENT,ASPFIELDRELEVANTOUTSTANDINGBEHAVIOURSATTHECAPITALMARKETOFCOMPANYJUSTCAUSEPEOPLESEXTENSIVECONCERNINFACTSPEAKINGFROMTHEINTENSIONANDESSENCEOFASPMODE,ITISNOTTHEBRANDNEWTHINGS,BUTTHEMODETHATHADONCEHAD,HASBEENGIVENTHENEWVITALITYATINTERNETAGEDURINGTHISFESTIVAL,WEWILLREVIEWTHECOURSETHATASPPRODUCEDEVELOPMENTANDDEVELOP,INORDERTOHELPTHEESSENCEOFBETTERDEEPUNDERSTANDINGASPATTHEEND,WEWILLCONCENTRATEONINTRODUCINGTHESITUATIONWHICHENTERPRISESDIVIDEFROMDIFFERENTSTANDARDSINASPFIELDATPRESENTTHETHIRDTHEDEVELOPMENTFOUNDATIONOFASPMODEASPASONEBRANDNEWCONCEPT,PROPOSITIONANDITTAKESSHAPETOBEJUSTTIMEFORMORETHANHALFAYEAROFIT,BUTINUSAANDOTHERFASTDEVELOPINGCOUNTRIESOFITINDUSTRY,ASPISBECOMINGAKINDOFNEWDEVELOPINGBUSINESSMODEOFLEADINGECOMMERCEINTHEFUTURE,MAINMATURITYBASEDONFOLLOWINGITTECHNOLOGYOFPRECONDITIONTHATASPPRODUCESANDDEVELOPSPOPULARIZATIONOFINTERNETINTERNETDEEPENSPEOPLESLIFEPROGRESSIVELY,ALARGENUMBEROFSOLUTIONSBASEDONWEBAREEMERGINGCONSTANTLY,ALLTHESEMAKELONGRANGEAPPLICATIONSCHEMEBASEDONHOSTCOMPUTERBECOMEPOSSIBLETHEBANDWIDTHISINCREASINGANDDROPPINGWITHTHEPRICECONSTANTLYCONSTANTLYCOMMUNICATIONPERFORMANCEANDBANDWIDTHEXPENSESREDUCEDCONTINUOUSLYINCREASED,MAKETHEAPPLICATIONPROGRAMATTHEHOSTCOMPUTERABLETOVISITTHROUGHINTERNETANDTIGHTCLIENTWHETHERCLIENT/SERVERCANUSEBYSHARINGUNDERTHEENVIRONMENTTHEREMOTEACCESSINASPCONCEPT,USERSHAVEALREADYBEENACCUSTOMEDTOUNDERTHEENVIROMENTOFCLIENT/THESERVER,THISMAKEREMOTEACCESSANDISITISITBECOMEACCEPTABLEFIRSTBUSINESSMODETOUSETOSHARETHEBROWSERBECOMESFIGUREINTERFACEAPPLICATIONPROGRAMACCEPTINGEXTENSIVELYTHEWIDE

簡(jiǎn)介：基于基于ASPASP的旅游網(wǎng)站的設(shè)計(jì)與實(shí)現(xiàn)的旅游網(wǎng)站的設(shè)計(jì)與實(shí)現(xiàn)摘要隨著計(jì)算機(jī)技術(shù)，網(wǎng)絡(luò)技術(shù)的迅猛發(fā)展，INTERNET的不斷普及，網(wǎng)絡(luò)在各個(gè)領(lǐng)域里發(fā)揮了越來越重要的作用。特別是隨著近年人民生活水平不斷提高，旅游成為了一個(gè)熱門話題。一些的知名的旅行社已經(jīng)在網(wǎng)上旅游方面取得了巨大的成就。論文詳細(xì)描述了一個(gè)基于ASP技術(shù)和ACCESS數(shù)據(jù)庫(kù)系統(tǒng)的旅游網(wǎng)站的開發(fā)過程。網(wǎng)站前臺(tái)實(shí)現(xiàn)了線路信息、旅游新聞和旅游資訊的查看，能夠完成游客在線預(yù)訂線路，留言板模塊為游客和旅行社、游客和游客之間提供了一個(gè)信息交流的平臺(tái)。網(wǎng)站后臺(tái)提供部分系統(tǒng)維護(hù)功能,主要是預(yù)訂信息管理；線路管理；旅行社設(shè)置；文章管理和留言管理等功能。它緊扣旅游的要素，對(duì)于旅游業(yè)的信息發(fā)布功能作了重點(diǎn)規(guī)劃，能夠應(yīng)付一個(gè)中小旅行社的日常工作。它不僅能夠讓瀏覽者得到最新的旅游信息，而且能夠?qū)€路進(jìn)行在線的查詢和預(yù)訂操作，使旅游變的異常輕松。關(guān)鍵詞關(guān)鍵詞ASP；旅游；網(wǎng)絡(luò)目錄論文總頁(yè)數(shù)23頁(yè)1引言111選題背景112選題依據(jù)113開發(fā)可行性214課題目標(biāo)22開發(fā)平臺(tái)及工具的選擇221平臺(tái)的選擇222工具的選擇3221環(huán)境的選擇3222ADO5223數(shù)據(jù)庫(kù)概述63需求分析及設(shè)計(jì)方案731需求分析7311理解需求7312需求分析732整體系統(tǒng)模塊設(shè)計(jì)833系統(tǒng)功能概述8331前臺(tái)8332后臺(tái)94數(shù)據(jù)庫(kù)設(shè)計(jì)1041數(shù)據(jù)庫(kù)需求分析1042數(shù)據(jù)庫(kù)邏輯設(shè)計(jì)1143數(shù)據(jù)庫(kù)連接文件145系統(tǒng)的實(shí)現(xiàn)1551首頁(yè)的實(shí)現(xiàn)1552線路預(yù)訂頁(yè)面的實(shí)現(xiàn)1553留言板頁(yè)面的實(shí)現(xiàn)1754后臺(tái)登錄頁(yè)面的實(shí)現(xiàn)176系統(tǒng)使用說明與測(cè)試1861系統(tǒng)使用說明1862系統(tǒng)性能分析1963主要模塊測(cè)試19631線路預(yù)訂模塊測(cè)試19632后臺(tái)登錄模塊測(cè)試20結(jié)論20參考文獻(xiàn)21

簡(jiǎn)介：畢業(yè)設(shè)計(jì)外文文獻(xiàn)譯文及原文學(xué)生生龍超學(xué)號(hào)號(hào)200912010121院（系）（系）理學(xué)院專業(yè)業(yè)數(shù)學(xué)與應(yīng)用數(shù)學(xué)指導(dǎo)教師指導(dǎo)教師周蕊2013年6月5日1眾所周知，數(shù)據(jù)庫(kù)是邏輯上相關(guān)的數(shù)據(jù)元的匯集。這些數(shù)據(jù)元可以按不同的結(jié)構(gòu)組織起來，以滿足單位和個(gè)人的多種處理和探索的需要。數(shù)據(jù)庫(kù)本身不是什么新鮮事早期的數(shù)據(jù)庫(kù)鑿在石頭上，記在名冊(cè)上，以及寫在索引卡中。而現(xiàn)在，數(shù)據(jù)庫(kù)普遍記錄在可磁化的介質(zhì)上，并且需要用計(jì)算機(jī)程序來執(zhí)行必需的存儲(chǔ)和索引操作。如下所述，所有數(shù)據(jù)庫(kù)（最簡(jiǎn)單的除外）中都有復(fù)雜的數(shù)據(jù)關(guān)系及其鏈接。處理與創(chuàng)建、訪問以及維護(hù)數(shù)據(jù)庫(kù)記錄有關(guān)的任務(wù)的系統(tǒng)軟件包叫做數(shù)據(jù)庫(kù)管理系統(tǒng)（DBM）。DBMS軟件包中的程序在數(shù)據(jù)庫(kù)與其用戶間建立接口。（這些用戶可以是應(yīng)用程序員、管理員、及其他需要信息餓人員和各種操作系統(tǒng)程序）。DBMS可組織、處理和表示從數(shù)據(jù)庫(kù)中選出的數(shù)據(jù)元。該功能使決策者能搜索、探查和查詢數(shù)據(jù)庫(kù)的內(nèi)容，對(duì)在正規(guī)報(bào)告中沒有的、不在出現(xiàn)的且無法預(yù)料的問題做出回答。這些問題最初可能是模糊的并且（或者）是定義不恰當(dāng)?shù)模侨藗兛梢詾g覽數(shù)據(jù)庫(kù)直到獲得所需的信息。簡(jiǎn)言之，DBMS將“管理”存儲(chǔ)的數(shù)據(jù)項(xiàng)，并從公共的數(shù)據(jù)庫(kù)中匯集所需的數(shù)據(jù)項(xiàng)以回答非程序員的詢問。在面向文件的系統(tǒng)中，需要特定信息的擁護(hù)應(yīng)將他們的要求傳送給程序員。該程序員在時(shí)間容許時(shí)，將編寫一個(gè)或多個(gè)程序以提取數(shù)據(jù)和準(zhǔn)備信息。然而，DBMS的可用性為擁護(hù)提供了一個(gè)更快的替代通信通道。3SQL和SQL服務(wù)器IBM在20世紀(jì)70年代，設(shè)計(jì)了一種專門處理數(shù)據(jù)庫(kù)查詢的計(jì)算機(jī)語(yǔ)言SEQUEL，這幾個(gè)字母是結(jié)構(gòu)化英語(yǔ)查詢語(yǔ)言的縮寫。隨著時(shí)間的推移，它增加了許多功能，就不僅是一個(gè)查詢語(yǔ)言了，還可以創(chuàng)建數(shù)據(jù)庫(kù)，管理數(shù)據(jù)古引擎的安全。IBM把他公開發(fā)行，于是就變成了現(xiàn)在為大家所知的SQL。由于歷史的原因SQL和讀成SEQUEL，也可以逐字段拼成SQL。在現(xiàn)在的數(shù)據(jù)庫(kù)引擎里，已經(jīng)有了好多種SQL版本。微軟SQLSERVER使用的是TSQL，它代表的是事務(wù)SQL。⑴什么是SQLSERVERSQLSERVER是一個(gè)客戶機(jī)/服務(wù)器關(guān)系型數(shù)據(jù)庫(kù)管理系統(tǒng)（RDBMS），它使用事務(wù)SQL在客戶機(jī)和SQL服務(wù)器之間傳送請(qǐng)求。⑵客戶機(jī)服務(wù)器體系結(jié)構(gòu)術(shù)語(yǔ)客戶機(jī)、服務(wù)器和客戶機(jī)服務(wù)器可以是非常廣泛的概念或指硬件、軟件、。按最一般的概念，客戶機(jī)是從系統(tǒng)其他部件請(qǐng)求服務(wù)或資源的系統(tǒng)的任何部件；服務(wù)器是向系統(tǒng)其他部件提供服務(wù)或資源的任何部件。例如，當(dāng)用戶從網(wǎng)絡(luò)上的工作站打印一個(gè)文件時(shí)，工作站是客戶機(jī)，用做假脫機(jī)打印的機(jī)器是服務(wù)器。任何基于數(shù)據(jù)的客戶機(jī)、務(wù)器系統(tǒng)都是由下列部件組成。服務(wù)器數(shù)據(jù)項(xiàng)和支持對(duì)象的匯集，其中這些對(duì)象是有組織的，并隨時(shí)準(zhǔn)備提交，以便為數(shù)據(jù)的搜索、分類、重組、檢索、更新和分析之類的服務(wù)提供便利。數(shù)據(jù)庫(kù)由數(shù)據(jù)的物理存儲(chǔ)器和數(shù)據(jù)庫(kù)服務(wù)組成。所有的數(shù)據(jù)訪問都通過服務(wù)器進(jìn)行，客戶一概不呢功能直接訪問物理數(shù)據(jù)?？蛻魴C(jī)一個(gè)軟件程序，該程序應(yīng)該由個(gè)人交互使用或可能是一個(gè)自動(dòng)進(jìn)程。其中包括從數(shù)據(jù)庫(kù)請(qǐng)求數(shù)據(jù)，或向數(shù)據(jù)庫(kù)送數(shù)的與服務(wù)器交互作用的所有軟件，例如管理實(shí)用程序（這些是SQL服務(wù)器產(chǎn)品的一部分并且是單獨(dú)購(gòu)買的）、特別查詢和報(bào)告軟件、可戶應(yīng)用程序、現(xiàn)貨應(yīng)用程序和基于WEB服務(wù)器的應(yīng)用程序?？蛻魴C(jī)和服務(wù)器之間的通信客戶機(jī)和服務(wù)器之間的通信很大程度上取決于客戶和服務(wù)器是如何實(shí)現(xiàn)的。通信的物理層和邏輯層可以被辨認(rèn)。當(dāng)你用電話與某人通信時(shí)，電話系統(tǒng)是物理

簡(jiǎn)介：第1頁(yè)共8頁(yè)中文2670字基于ST語(yǔ)言（結(jié)構(gòu)化文本語(yǔ)言）可編程控制器組態(tài)控制和編程經(jīng)驗(yàn)作者GKARMAKAR,ASHUTOSHKABRA,JOSEJOSEPH,BBBISWAS,RKPATIL反應(yīng)器控制部分巴哈馬原子能研究中心摘要摘要本文的主要內(nèi)容為在可編程控制器的配置過程中，根據(jù)運(yùn)行過程中的配置情況進(jìn)行程序代碼編寫，并且將實(shí)時(shí)操作系統(tǒng)抽象的嵌入PLC硬件之中，從而實(shí)現(xiàn)一個(gè)典型的控制邏輯應(yīng)用，在此過程中我們使用的是IEC611313標(biāo)準(zhǔn)ST語(yǔ)言。關(guān)鍵詞關(guān)鍵詞PLC，ST語(yǔ)言，POU（程序組織單元），配置，資源，程序，功能11引言引言可編程控制器是大多數(shù)控制項(xiàng)目的骨干，例如發(fā)電，鋼鐵生產(chǎn)，化工，石油化工，核電站等各行業(yè)。一個(gè)可編程控制器（PLC）是一種工業(yè)計(jì)算機(jī)控制系統(tǒng)，它能連續(xù)監(jiān)測(cè)設(shè)備的輸入狀態(tài)，并且根據(jù)某種程序來控制輸出設(shè)備的狀態(tài)。針對(duì)生產(chǎn)過程中的輸入條件是一段時(shí)間，要求可編程控制器的輸出結(jié)果應(yīng)該為一個(gè)實(shí)時(shí)的系統(tǒng)。在過去，許多PLC生產(chǎn)廠商使用自己的編程語(yǔ)言，這些語(yǔ)言與他人是不兼容的。為了提高不同產(chǎn)品之間重用組件的兼容性和互操作性，國(guó)際電工委員會(huì)61131標(biāo)準(zhǔn)針對(duì)主要不同引入統(tǒng)一的做法。IEC61131標(biāo)準(zhǔn)的第三部分規(guī)定了統(tǒng)一的基于可編程控制器的編程語(yǔ)言套件的語(yǔ)法和語(yǔ)義。在本文中，我們描述了一個(gè)運(yùn)用PLC的典型控制邏輯應(yīng)用，包括實(shí)時(shí)的程序?qū)懭?，?shí)時(shí)的代碼生成配置，和PLC硬件部分的實(shí)時(shí)操作系統(tǒng)嵌入，在此過程中我們運(yùn)用的是ST編程語(yǔ)言。22研究范例研究范例21案例定義一個(gè)簡(jiǎn)單的應(yīng)用案例,控制一個(gè)水泵P1和排放閥V1并且根據(jù)要求向指定設(shè)備（例如一個(gè)SCADA站）發(fā)送信息。使用要求使用要求1讀取以下內(nèi)容的輸入情況。A）P1的啟動(dòng)按鈕的狀態(tài)（離散輸入）B）P1的停止按鈕的狀態(tài)（離散輸入）第3頁(yè)共8頁(yè)所示。圖41基于IEC611313標(biāo)準(zhǔn)的軟件體系結(jié)構(gòu)41組態(tài)，資源，任務(wù)在最高的等級(jí)中，針對(duì)一個(gè)特定問題的控制軟件是包含在一個(gè)組態(tài)系統(tǒng)中，他把PLC系統(tǒng)所利用的所有資源組織在一起，并提供他們之間交換數(shù)據(jù)的協(xié)議。資源就是其中的處理設(shè)施，能夠執(zhí)行IEC方案，它的定義為，向PLC系統(tǒng)的物理資源進(jìn)行任務(wù)分配。一個(gè)組態(tài)中可以有一個(gè)或多個(gè)資源。組態(tài)和資源不會(huì)像程序組織單元那樣包含相互指示，但僅僅定義它們的元素之間的關(guān)系。任務(wù)是定義為一個(gè)能夠援引的執(zhí)行控制單元，他可能發(fā)生在一個(gè)定期時(shí)間段，或者時(shí)間段之后，或者某個(gè)變量的上升沿。執(zhí)行某個(gè)組織單位的方案，其中包括程序集和功能模塊。像其他PLC應(yīng)用方案一樣，我們需要定義復(fù)合要求的I/O硬件設(shè)備和他的類型，對(duì)于我們研究的案例，包括一個(gè)數(shù)字輸入卡，一個(gè)數(shù)字輸出卡和一個(gè)模擬輸入卡。配置ST程序如下組態(tài)過程控制程序組態(tài)元素組態(tài)資源任務(wù)/運(yùn)行時(shí)程序程序功能模塊功能模塊功能模塊功能功能

簡(jiǎn)介：南京郵電大學(xué)通達(dá)學(xué)院畢業(yè)設(shè)計(jì)論文外文資料翻譯學(xué)院通達(dá)學(xué)院專業(yè)網(wǎng)絡(luò)工程學(xué)生姓名班級(jí)學(xué)號(hào)外文出處SIMULATIONOFTIMEVARYING,FREQUENCYSELECTIVEMULTIPATHFADINGCHANNELSFORSPREADSPECTRUMWAVEFORMS附件1外文資料翻譯譯文；2外文原文指導(dǎo)教師評(píng)價(jià)1．翻譯內(nèi)容與課題的結(jié)合度□優(yōu)□良□中□差2．翻譯內(nèi)容的準(zhǔn)確、流暢□優(yōu)□良□中□差3．專業(yè)詞匯翻譯的準(zhǔn)確性□優(yōu)□良□中□差4．翻譯字符數(shù)是否符合規(guī)定要求□符合□不符合指導(dǎo)教師簽名年月日在本文中，我們討論的設(shè)計(jì)與實(shí)現(xiàn)的模擬和演示的性能對(duì)幾種多路模擬數(shù)據(jù)傳輸渠道。本文的組織如下。通道模型，給出了模擬器的基礎(chǔ)2節(jié)，和模擬器的實(shí)現(xiàn)在3節(jié)中簡(jiǎn)要的討論。仿真結(jié)果演示的信道模擬器的性能在第4節(jié)。最后，在第5節(jié)中，我們討論未來的工作和目前的一些總結(jié)。2信道模型信道模型所考慮的基帶信道建模作為一個(gè)隨時(shí)間變化的復(fù)值隨機(jī)過程，其中，表示的輸出由于一個(gè)脈沖在時(shí)間F的信道在??|0,TRHT????HT?時(shí)間發(fā)送。據(jù)推測(cè)，是一個(gè)零均值，復(fù)高斯隨機(jī)過程是，固定在T??HT??T，滿足非相關(guān)散射假設(shè)，即，其中一個(gè)橫杠表示復(fù)共軛，代表平均輸出功率的信道和（T）是DIRAC函數(shù)9，10。如果一個(gè)基帶信號(hào)單側(cè)帶寬CL通過低通脈沖信道傳輸響應(yīng)，然TXHT?后不加性噪聲，低通通道輸出的R（T）是由其中是H（R），一個(gè)FIINCTION的的投影，到帶寬限制的功能的空間HT??的間隔11。假設(shè)的信號(hào)也是有限的時(shí)間到的時(shí)間間隔0，T，我們得??,???到

簡(jiǎn)介：1中文中文4760字本科畢業(yè)設(shè)計(jì)本科畢業(yè)設(shè)計(jì)（論文）翻譯（論文）翻譯班級(jí)姓名學(xué)號(hào)指導(dǎo)教師指導(dǎo)教師填表日期填表日期3譯文摘要摘要本文首先討論了電子商務(wù)的基本理論和必要性。在下一節(jié)中，介紹了有關(guān)ASPNET，C＃，SQLSERVER，INTERNET信息服務(wù)和SSL證書等方面的知識(shí)，同時(shí)本文談到為什么選擇ASPNET和C＃作為電子商務(wù)項(xiàng)目的編程語(yǔ)言，以及電子商務(wù)項(xiàng)目中的項(xiàng)目部署和方法。并且對(duì)ASPNET編程教學(xué)和電子商務(wù)項(xiàng)目的部署間的關(guān)系進(jìn)行了重要的討論。關(guān)鍵詞關(guān)鍵詞ASPNET編程；教學(xué)；電子商務(wù)項(xiàng)目的部署；框架技術(shù)一、引言一、引言ASPNET是開發(fā)交互式WEB應(yīng)用程序最流行和強(qiáng)大的方式，也是用于構(gòu)建交互式網(wǎng)站最強(qiáng)大且最靈活的工具，尤其是與服務(wù)器端數(shù)據(jù)庫(kù)進(jìn)行交互數(shù)據(jù)驅(qū)動(dòng)的網(wǎng)站1。ASPNET程序被編譯為一個(gè)相對(duì)簡(jiǎn)單的虛擬機(jī)（NETFRAMEWORK），這是最新的開發(fā)環(huán)境，它允許開發(fā)人員利用特殊的庫(kù)的優(yōu)點(diǎn)2。從本質(zhì)上講，NET是一個(gè)新發(fā)展的框架，為經(jīng)典的WINDOWS作業(yè)系統(tǒng)1的服務(wù)和API提供了一個(gè)新的應(yīng)用程序編程接口。它可以在任何一臺(tái)計(jì)算機(jī)的體系結(jié)構(gòu)上實(shí)現(xiàn)，即RISC或CISC。如果NETFRAMEWORK上已經(jīng)安裝了那種操作系統(tǒng)，它可以運(yùn)行任何操作系統(tǒng)，即，UNIX，MAC或WINDOWS操作系統(tǒng)。雖然NETFRAMEWORK不提供像一個(gè)現(xiàn)代的微處理器一樣盡可能豐富的指令集，但它能夠?qū)崿F(xiàn)帶有按鈕、畫布和其他圖形元素的用戶界面。編譯的ASPNET程序生成包含NETFRAMEWORK虛擬機(jī)字節(jié)碼的類文件。C＃編程語(yǔ)言一直是一個(gè)驚人的成功。通過刪除一些C的語(yǔ)法謬誤，C＃已經(jīng)成為大學(xué)生程序設(shè)計(jì)課程的主要語(yǔ)言。其簡(jiǎn)單的面向?qū)ο竽Ｐ秃途W(wǎng)絡(luò)化與圖形用戶界面庫(kù)已經(jīng)使它更適合于傳達(dá)面向?qū)ο蟮母拍詈透呒?jí)的計(jì)算主題，如線程和分布式對(duì)象。此外，它的跨平臺(tái)結(jié)構(gòu)使其成為用于開發(fā)可在任何地方運(yùn)行的應(yīng)用程序的首選語(yǔ)言，就像JAVA一樣可以從最小的設(shè)備上運(yùn)行到最具擴(kuò)展性的服務(wù)器3。在中國(guó)，幾乎每個(gè)大學(xué)都設(shè)立了計(jì)算機(jī)專業(yè)并且主修計(jì)算機(jī)的本科生數(shù)量超過其他任何專業(yè)。自從使用電腦的技能被視為21世紀(jì)的三大基本能力之一，學(xué)生們必須從小學(xué)開始學(xué)習(xí)計(jì)算機(jī)課程4。電子商務(wù)在近幾年引發(fā)廣泛關(guān)注。它沒有一個(gè)統(tǒng)一的標(biāo)準(zhǔn)和理解。許多計(jì)算機(jī)制造商（電子商務(wù)的主要推動(dòng)者）為了各自的商業(yè)目的毫不妥協(xié)，這使人們對(duì)于電子商務(wù)的概念感覺更加晦澀難明。其實(shí)，電子商務(wù)并不神秘。它已在世界各地包括中國(guó)有許多成功的實(shí)踐。目前，電子商務(wù)作為一項(xiàng)重要的商業(yè)活動(dòng)模式已經(jīng)成為增長(zhǎng)最快的國(guó)際商務(wù)活動(dòng)。作為商務(wù)的一種全新的運(yùn)營(yíng)模式，它在現(xiàn)代經(jīng)濟(jì)發(fā)展中發(fā)揮著日益重要的作用。在實(shí)際的經(jīng)營(yíng)活動(dòng)中，電子商務(wù)系統(tǒng)的一些技術(shù)支持的是ASPNET（C＃）基于分布式數(shù)據(jù)庫(kù)，動(dòng)態(tài)WEB應(yīng)用程序與背景數(shù)據(jù)庫(kù)和用戶相互作用。因此，如何建立一個(gè)高效的電子商務(wù)系