本文整理自网络，侵删。
type
THttpThread = class(TThread)
private
FIdHTTP: TIdHTTP;
FUrl: string;
FSavePath: string;
procedure Down(Url: string; SavePath: string);
public
constructor Create(CreateSuspended: Boolean; Url: string; SavePath: string);
destructor Destroy; override;
procedure Execute; override;
end;
{ THttpThread }
constructor THttpThread.create(CreateSuspended: Boolean; Url: string; SavePath: string);
begin
inherited Create(CreateSuspended);
FreeOnTerminate := True;
FUrl := Url;
FSavePath := SavePath;
FIdHTTP := TIdHTTP.Create(nil);
end;
destructor THttpThread.Destroy;
begin
FIdHTTP .Free;
inherited;
end;
procedure THttpThread.Down(Url: string; SavePath: string);
var
Stream: TMemoryStream;
begin
BegTime := GetTickCount;
Stream := TMemoryStream.Create;
try
try
FIdHTTP.Get(Url, Stream);
finally
DeleteUrlCacheEntry(PChar(Url));
end;
except
MessageBox(0, '网络出错', '提示', MB_ICONQUESTION);
Stream.Free;
Exit;
end;
Stream.SaveToFile(SavePath);
Stream.Free;
end;
procedure TForm1.Button2Click(Sender: TObject);
var
HttpThread1: THttpThread;
UrlPath: string;
begin
UrlPath := 'http://www.3464.com/Images/TopLogo.gif';
HttpThread1 := THttpThread.Create(False, UrlPath, 'C:\Test\1.Rar');
end;
procedure THttpThread.Execute;
begin
inherited;
Down(FUrl, FSavePath);
end;
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