将Delphi作为ASP.NET的脚本语言

王朝asp·作者佚名  2006-11-24
窄屏简体版  字體: |||超大  

将Delphi视为脚本语言

支持ASP.net的第一件事是让ASP.NET将Delphi视为脚本语言,让ASP.NET能够为各种ASP文件类型调用Delphi的.NET编译器。

ASP.NET要在IIS虚路径的根目录下寻找Web.config文件。下面是ASP.NET中使用Delphi作脚本语言的web.config配制文件内容:

<configuration>

<system.web>

<compilation debug="true">

<assemblies>

<add assembly="DelphiProvider" />

</assemblies>

<compilers>

<compiler language="Delphi" extension=".pas"

type="Borland.Delphi.DelphiCodeProvider,DelphiProvider" />

</compilers>

</compilation>

</system.web>

</configuration>

关于web配制文件的详情请参MSDN:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconformatofconfigurationfiles.asp

在我的机器(Win2K Pro)上测试Delphi对ASP.NET的支持。要增加一个虚路径来安放Delphi脚本,我把这个路径名定为"vslive"。

在我的机器配制文件上作了这个小改动后就可以来看ASP.NET是如何将Delphi视为脚本语言的。

在ASP.NET中使用Delphi代码

首先编写一个简单应用来确认我们的Delphi支持配制是正确的。下面是editdemo.aspx文件的代码,有一个文本输入框,一个按钮。按钮事件触发显示输入框内容。

<html>

<script language="Delphi" runat="server">

procedure ButtonClick(Sender: System.Object; E: EventArgs);

begin

Message.Text := Edit1.Text;

end;

</script>

<body>

<form runat="server">

<asp:textbox id="Edit1" runat="server"/>

<asp:button text="Click Me!" OnClick="ButtonClick" runat="server"/>

</form>

<p><b><asp:label id="Message" runat="server"/></b></p>

</body>

</html>

可以看到,ASP按钮对象的OnClick事件触发Delphi的ButtonClick过程,而Delphi程序里却使用了ASP对象label Message和text box Edit1。虽然在Delphi过程中没有定义ASP的二个变量,Delphi代码却能找到它们。这是因为脚本中含有的Delphi服务模块能够产生相应的Delphi代码。

现在可以用本地浏览器来浏览这个网页了。因为我把脚本放在"vslive"虚路径,所以打开:

http://localhost/vslive/editdemo.aspx.

以下是编译之后形成的Delphi代码,代码产生WebForm:

//------------------------------------------------------------------------------

// <autogenerated>

// 本代码由一个工具生成

// 运行版本:1.0.3705.209

//

// 修改本文件将导致异常行为并丢失生成的代码。

// </autogenerated>

//------------------------------------------------------------------------------

unit ASP;

interface

uses System.Collections, System.Collections.Specialized, System.Configuration,

System.Text, System.Text.RegularExpressions, System.Web, System.Web.Caching,

System.Web.SessionState, System.Web.Security, System.Web.UI, System.Web.UI.WebControls,

System.Web.UI.HtmlControls, System.Globalization;

var

editdemo_aspx___autoHandlers: Integer;

editdemo_aspx___intialized: Boolean = False;

editdemo_aspx___fileDependencies: System.Collections.ArrayList;

type

editdemo_aspx = class(System.Web.UI.Page, System.Web.SessionState.IRequiresSessionState)

protected

Edit1: System.Web.UI.WebControls.TextBox;

__control3: System.Web.UI.WebControls.Button;

__control2: System.Web.UI.HtmlControls.HtmlForm;

Message: System.Web.UI.WebControls.Label;

procedure ButtonClick(Sender: System.Object; E: EventArgs);

public

constructor Create;

function get_AutoHandlers: Integer; override;

function get_ApplicationInstance: System.Web.HttpApplication; virtual;

function get_TemplateSourceDirectory: System.String; override;

procedure set_AutoHandlers(Value: Integer); override;

protected

property AutoHandlers: Integer read get_AutoHandlers write set_AutoHandlers;

property ApplicationInstance: System.Web.HttpApplication read get_ApplicationInstance;

public

property TemplateSourceDirectory: System.String read get_TemplateSourceDirectory;

private

function __BuildControlEdit1: System.Web.UI.Control;

function __BuildControl__control3: System.Web.UI.Control;

function __BuildControl__control2: System.Web.UI.Control;

function __BuildControlMessage: System.Web.UI.Control;

procedure __BuildControlTree(__ctrl: System.Web.UI.Control);

protected

procedure FrameworkInitialize; override;

public

function GetTypeHashCode: Integer; override;

end;

implementation

procedure editdemo_aspx.ButtonClick(Sender: System.Object; E: EventArgs);

begin

Message.Text := Edit1.Text;

end;

constructor editdemo_aspx.Create;

var

dependencies: System.Collections.ArrayList;

begin

inherited Create;

if (ASP.editdemo_aspx___intialized = False) then

begin

dependencies := System.Collections.ArrayList.Create;

dependencies.Add('d:\vslive\editdemo.aspx');

ASP.editdemo_aspx___fileDependencies := dependencies;

ASP.editdemo_aspx___intialized := True;

end;

Self.Server.ScriptTimeout := 30000000;

end;

function editdemo_aspx.get_AutoHandlers: Integer;

begin

Result := ASP.editdemo_aspx___autoHandlers;

end;

function editdemo_aspx.get_ApplicationInstance: System.Web.HttpApplication;

begin

Result := Self.Context.ApplicationInstance as System.Web.HttpApplication;

end;

function editdemo_aspx.get_TemplateSourceDirectory: System.String;

begin

Result := '/vslive';

end;

procedure editdemo_aspx.set_AutoHandlers(Value: Integer);

begin

ASP.editdemo_aspx___autoHandlers := Value;

end;

function editdemo_aspx.__BuildControlEdit1: System.Web.UI.Control;

var

__ctrl: System.Web.UI.WebControls.TextBox;

begin

__ctrl := System.Web.UI.WebControls.TextBox.Create;

Self.Edit1 := __ctrl;

__ctrl.ID := 'Edit1';

__ctrl.Width := System.Web.UI.WebControls.Unit.Parse('300px', System.Globalization.CultureInfo.InvariantCulture);

Result := __ctrl;

end;

function editdemo_aspx.__BuildControl__control3: System.Web.UI.Control;

var

__ctrl: System.Web.UI.WebControls.Button;

begin

__ctrl := System.Web.UI.WebControls.Button.Create;

Self._

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