如何实现用idhttp断点续传

Question

各位老大!.....
困了我一个星期了...

Answer 1

procedure TForm1.GetButtonClick(Sender: TObject);
var
  FileName:String;
begin
  HttpCli1.ContentRangeBegin := IntToStr(1024*1024);
  HttpCli1.ContentRangeEnd := '';
  GetButton.Enabled   := FALSE;
  HttpCli1.Head;
  FileName:=HttpCli1.DocName;
  FileName:='C:\'+FileName;
//  if not FileExists(FileName) then
//    FileClose(FileCreate(FileName));  HttpCli1.RcvdStream := TFileStream.Create(FileName, fmCreate);
//  HttpCli1.RcvdStream := TFileStream.Create(FileName, fmOpenReadWrite);
//  HttpCli1.ContentRangeBegin := IntToStr(HttpCli1.RcvdStream.Size);
//  if HttpCli1.ContentRangeBegin='0' then HttpCli1.ContentRangeBegin:='';
//  HttpCli1.RcvdStream.Seek(0,soFromEnd);  AbortButton.Enabled := TRUE;
  InfoLabel.Caption   := 'Loading';
  try
    try
      HttpCli1.Get;
      MemoRcv.Lines.Add(HttpCli1.RcvdHeader.Text);
      InfoLabel.Caption := 'Received ' +
                           IntToStr(HttpCli1.RcvdStream.Size) + ' bytes';
    except
      on E: EHttpException do begin
          InfoLabel.Caption := 'Failed : ' +
                               IntToStr(HttpCli1.StatusCode) + ' ' +
                               HttpCli1.ReasonPhrase;;
        end
      else
        raise;
    end;
  finally
    GetButton.Enabled   := TRUE;
    AbortButton.Enabled := FALSE;
    HttpCli1.RcvdStream.Destroy;
    HttpCli1.RcvdStream := nil;
  end;
end;

Answer 2

不是HttpCli1控件
我是用indy 中的 idhttp 控件
有这样的例子吗?