indy10 idhttp get方法

idhttp中对于get方法的定义：

procedure Get(AURL: string; AResponseContent: TStream); overload;  
procedure Get(AURL: string; AResponseContent: TStream; AIgnoreReplies: array of SmallInt); overload;  
function Get(AURL: string): string; overload;  
function Get(AURL: string; AIgnoreReplies: array of SmallInt): string; overload;  

其中的最基本的方法是过程类方法

procedure Get(AURL: string; AResponseContent: TStream; AIgnoreReplies: array of SmallInt); overload;  

AURL: string;   // get操作的目标URL  
AResponseContent: TStream;  // 返回流  
AIgnoreReplies: array of SmallInt;  // 忽略掉出现这些http状态码的错误  

unit UMain;  
  
interface  
  
uses  
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,  
  Dialogs, IdBaseComponent, IdComponent, IdTCPConnection, IdTCPClient,  
  IdHTTP, StdCtrls;  
  
type  
  TForm1 = class(TForm)  
    IdHTTP1: TIdHTTP;  
    Memo1: TMemo;  
    btnGetOne: TButton;  
    btnGetTwo: TButton;  
    btnGetThree: TButton;  
    btnGetFour: TButton;  
    procedure btnGetOneClick(Sender: TObject);  
    procedure btnGetTwoClick(Sender: TObject);  
    procedure btnGetThreeClick(Sender: TObject);  
    procedure btnGetFourClick(Sender: TObject);  
  private  
    { Private declarations }  
  public  
    { Public declarations }  
  end;  
  
var  
  Form1: TForm1;  
  
implementation  
  
{$R *.dfm}  
  
const  
  Cgeturl = 'http://www.soso.com/';  
  C302url = 'http://soso.com/';  
  
var  
  RespData : TStringStream;  
  
procedure TForm1.btnGetOneClick(Sender: TObject);  
begin  
  RespData := TStringStream.Create('');  
  IdHTTP1.Get(Cgeturl, RespData);  
  Memo1.Text := RespData.DataString;  
end;  
  
procedure TForm1.btnGetTwoClick(Sender: TObject);  
begin  
  RespData := TStringStream.Create('');  
  IdHTTP1.Get(C302url, RespData, [302]);  
  Memo1.Text := RespData.DataString;  
end;  
  
procedure TForm1.btnGetThreeClick(Sender: TObject);  
begin  
  Memo1.Text := IdHTTP1.Get(Cgeturl);  
end;  
  
procedure TForm1.btnGetFourClick(Sender: TObject);  
begin  
  Memo1.Text := IdHTTP1.Get(C302url, [302]);  
end;  
  
end.