網(wǎng)絡數(shù)據(jù)庫應用之B、S架構程序設計

B/S架構程序設計B/S架構、特點網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06一、概念網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06B/S（Browser/Server）結構即瀏覽器和服務器結構。它是隨著Internet技術的興起，對C/S結構的一種變化或者改進的結構。在這種結構下，用戶工作界面是通過WWW瀏覽器來實現(xiàn)，極少部分事務邏輯在前端（Browser）實現(xiàn)，但是主要事務邏輯在服務器端（Server）實現(xiàn)，形成所謂三層3-tier結構。這樣就大大簡化了客戶端電腦載荷，減輕了系統(tǒng)維護與升級的成本和工作量，降低了用戶的總體成本（TCO）。二、特點網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06系統(tǒng)開發(fā)、維護和升級的經(jīng)濟性BS模式提供了一致的用戶界面BS模式具有很強的開放性BS模式的結構易于擴展BS模式具有更強的信息系統(tǒng)集成性BS模式提供靈活的信息交流和信息發(fā)布服務三、3-Tiers&MVC網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.063-Tiers:對于基于數(shù)據(jù)庫的應用程序開發(fā)往往采用3層結構模型，即將數(shù)據(jù)表現(xiàn)層、業(yè)務邏輯層、數(shù)據(jù)存儲層三者分離處理。從而達到重用代碼的目的。數(shù)據(jù)表現(xiàn)層(Presentation)終端用戶可以看到和操作的界面。業(yè)務邏輯層(Business)處理復雜的業(yè)務邏輯，保證業(yè)務數(shù)據(jù)的正確和一致。數(shù)據(jù)存儲層(Data)處理來自業(yè)務邏輯層對數(shù)據(jù)的查詢與更新請求，并做到數(shù)據(jù)的持久化。三、3-Tiers&MVC網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.063-Tiers:對于基于數(shù)據(jù)庫的應用程序開發(fā)往往采用3層結構模型，即將數(shù)據(jù)表現(xiàn)層、業(yè)務邏輯層、數(shù)據(jù)存儲層三者分離處理。從而達到重用代碼的目的。PresentationBusinessDataDB三、3-Tiers&MVC網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06MVC:對于基于Web和數(shù)據(jù)驅動的應用，將數(shù)據(jù)可視性、業(yè)務與數(shù)據(jù)模型、以及協(xié)調(diào)兩者的控制器分離處理，從而重用代碼。視圖(View)終端用戶可以看到和操作的界面。控制器(Controller)將視圖層請求派發(fā)給不同的模型，用來請求數(shù)據(jù)。模型(Model)處理來自視圖對數(shù)據(jù)的查詢與更新請求，實現(xiàn)業(yè)務邏輯，并做到數(shù)據(jù)的持久化。三、3-Tiers&MVC網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.063-Tiers&MVC:重用代碼，提高系統(tǒng)適應性的機制。ViewControllerModelViewViewDB四、Asp.Net&B/S網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net:Microsoft?ASP.NETisasetoftechnologiesintheMicrosoft.NETFrameworkforbuildingWebapplicationsandXMLWebservices.ASP.NETpagesexecuteontheserverandgeneratemarkupsuchasHTML,WML,orXMLthatissenttoadesktopormobilebrowser.ASP.NETpagesuseacompiled,event-drivenprogrammingmodelthatimprovesperformanceandenablestheseparationofapplicationlogicanduserinterface.四、Asp.Net&B/S網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net:Microsoft?ASP.NETisasetoftechnologiesintheMicrosoft.NETFrameworkforbuildingWebapplicationsandXMLWebservices.B/SWebASP.Net基于瀏覽器的應用五、Asp.Net&MVC網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net:Microsoft?ASP.NETisasetoftechnologiesintheMicrosoft.NETFrameworkforbuildingWebapplicationsandXMLWebservices.MVC:對于基于Web和數(shù)據(jù)驅動的應用，將數(shù)據(jù)可視性、業(yè)務與數(shù)據(jù)模型、以及協(xié)調(diào)兩者的控制器分離處理，從而重用代碼。MVCASP.Net五、Asp.Net&MVC網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06Page.aspxPage.aspx.csTableAdpaterDataSetViewControllerModel六、Asp.Net&3-Tiers網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net:Microsoft?ASP.NETisasetoftechnologiesintheMicrosoft.NETFrameworkforbuildingWebapplicationsandXMLWebservices.3-TiersASP.Net3-Tiers:對于基于數(shù)據(jù)庫的應用程序開發(fā)往往采用3層結構模型，即將數(shù)據(jù)表現(xiàn)層、業(yè)務邏輯層、數(shù)據(jù)存儲層三者分離處理。從而達到重用代碼的目的。六、Asp.Net&3-Tiers網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ObjectDataSourceControlTableAdpaterDataSetPresentationBusinessDataPresentationControls七、Asp.Net2.0網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0:Microsoft?ASP.NET,thenewerversion.CodeModel:Page.aspxPage.aspx.csCode-Behind:將頁面控制邏輯推到后臺的代碼文件執(zhí)行.且頁面是繼承自后臺的代碼文件中定義的頁面類的.Sample<%@PageLanguage="C#"AutoEventWireup="true"CodeFile="Default.aspx.cs"Inherits="_Default"%>publicpartialclass_Default:System.Web.UI.Page七、Asp.Net2.0網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0:Microsoft?ASP.NET,thenewerversion.CodeModel:Page.aspxPage.aspx.csControls:將用戶操作和數(shù)據(jù)展現(xiàn)封裝在一個頁面控件中,并用標簽定義控件<asp:xxxx></asp:xxxx>Events-Driven:將用戶與頁面的交互過程按照事件驅動方式傳遞給后臺處理.Sample七、Asp.Net2.0網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0:Microsoft?ASP.NET,thenewerversion.Data-Driven:PresentationControlsObjectDataSourceControlTableAdpaterDataSetDBSample八、Asp.Net2.0Pages網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0Pages:Microsoft?ASP.NET,thecontainerofmarkedhtml&controls.Itisfinallyexplainedhtmlpages.Components:Page指令HtmlScript聲明塊Script呈現(xiàn)塊Controls標記塊Others…八、Asp.Net2.0Pages網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0Pages:Microsoft?ASP.NET,thecontainerofmarkedhtml&controls.Itisfinallyexplainedhtmlpages.LifeCycleInitProcessLoadProcessRenderProcessSavePageStateProcessUnloadProcess八、Asp.Net2.0Pages網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0Pages:Microsoft?ASP.NET,thecontainerofmarkedhtml&controls.Itisfinallyexplainedhtmlpages.LifeCycle初次頁請求:IsPostBack=false回發(fā)頁請求:IsPostBack=trueThepagefirstloads.Thepagereloads.Universally,itisinvokedbythecontrolspostbacking.八、Asp.Net2.0Pages網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0Pages:Microsoft?ASP.NET,thecontainerofmarkedhtml&controls.Itisfinallyexplainedhtmlpages.LifeCycle頁視圖狀態(tài)ViewstateSavethepageandcontrolsinthepagepropertiesforrestoringtheminprocessofreloadingpage.Itisjustahiddeninputdomaininhtmlpage.八、Asp.Net2.0Pages網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0Pages:Microsoft?ASP.NET,thecontainerofmarkedhtml&controls.Itisfinallyexplainedhtmlpages.LifeCycle頁視圖狀態(tài)ViewstateStaticStateThepropertiesofcontrolaresetbydesigning.TheyarerestoredbeforePageInit.八、Asp.Net2.0Pages網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0Pages:Microsoft?ASP.NET,thecontainerofmarkedhtml&controls.Itisfinallyexplainedhtmlpages.LifeCycle頁視圖狀態(tài)Viewstate(2)DynamicStateThepropertiesofcontrolaresetbyruntiming.TheyarerestoredbeforePageLoad.八、Asp.Net2.0Pages網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0Pages:Microsoft?ASP.NET,thecontainerofmarkedhtml&controls.Itisfinallyexplainedhtmlpages.LifeCycleInitProcessPreInitInitInitCompleteHasconstructedcontrolsandcanusethemNotrestorethedynamicstate(Viewstate)ApplythepageThemes八、Asp.Net2.0Pages網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0Pages:Microsoft?ASP.NET,thecontainerofmarkedhtml&controls.Itisfinallyexplainedhtmlpages.LifeCycleLoadProcessPreLoadLoadControlEventsHasrestoredallstatesUsingthecontrolsLoadComplete八、Asp.Net2.0Pages網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0Pages:Microsoft?ASP.NET,thecontainerofmarkedhtml&controls.Itisfinallyexplainedhtmlpages.LifeCycleRenderProcessPreRenderDataBindProcessPreRenderCompleteCandecidethepropertiesofcontrolsUsingthecontrols’finalstates八、Asp.Net2.0Pages網(wǎng)絡數(shù)據(jù)庫應用?2007.03~2007.06ASP.Net2.0Pages:Microsoft?ASP.NET,thecontainerofmarkedhtml&controls.Itisfinallyexplainedhtmlpages.LifeCycleSavePageStatesProcessSaveStateCompleteResponse