小编Ole*_*kov的帖子

我正在尝试使用TIdMultipartFormDataStream 进行多部分上传到 Box.com.虽然文件名最多为'\ u0424\u042B\u0412\u0410\u041F.txt'但它可以正常工作,但是当它更长时('\ u0424\u042B\u0412\u0410\u040F\u0420.txt')它会导致'HTTP' /1.1 400 Bad Request'.

FormField.FFieldValue长度是否有一些限制？如果是这样,有没有办法绕过它？

procedure TBoxComSaveFilter.UploadTest;
const
  URL = 'https://upload.box.com/api/2.0/files/content';
var
  IdHTTP: TIdHTTP;
  MD: TIdMultipartFormDataStream;
begin
  IdHTTP := TIdHTTP.Create(nil);
  try
    IdHTTP.HandleRedirects := True;
    IdHTTP.IOHandler := TIdSSLIOHandlerSocketOpenSSL.Create(IdHTTP);
    IdHTTP.Request.BasicAuthentication := False;
    IdHTTP.Request.CustomHeaders.Values['Authorization'] := 'Bearer ' + FAccessToken;
    MD := TIdMultipartFormDataStream.Create;
    try
      MD.AddFormField('metadata', '{"name": "' +
        '\u0424\u042B\u0412\u0410\u041F.txt' +       // => OK
//        '\u0424\u042B\u0412\u0410\u041F\u0420.txt' + // => 400 Bad Request
        '", "parent": {"id": "0"}}', '', 'application/json');

      MD.AddFile('content', 'source.txt', 'application/octet-stream');
      IdHTTP.Post(URL, MD);
    finally
      MD.Free;
    end;
  finally
    IdHTTP.Free;
  end; …