delphi 2010 - tidhttp 帖子

Question

我想将数据发布到以下网址：

http://mehratin.heroku.com/personals/new

我编写了以下代码，但有问题：

procedure TForm1.Button3Click(Sender: TObject);
var
  aStream: TMemoryStream;
  Params: TStringList;
begin
  aStream := TMemoryStream.Create;
  Params := TStringList.Create;
  try
    with IdHTTP1 do
    begin
      Params.Add('fname=123');
      Params.Add('lname=123');
      Request.ContentType := 'application/x-www-form-urlencoded';
      try
        Response.KeepAlive := False;
        Post('http://localhost:3000/personals/new', Params);
      except
        on E: Exception do
          showmessage('Error encountered during POST: ' + E.Message);
      end;
    end;

如何在 delphi 2010 中通过 TIDHtttp.post 方法发布数据？

Answer 1

首先，您需要阅读 http 响应代码（将其包含在您的问题中会很有用）。

如果没有的话，我之前使用过 Indy http 对象，如下所示。不过，我在 URL 中包含了参数。要排除故障，请尝试使用 http.Get 运行此命令，以确保端口已打开，并且您可以实际连接到服务器。这是我的完整示例：

// parameters
params := format('export=1&format=%s&file=%s', [_exportType, destination]);

// First setup the http object
procedure TCrystalReportFrame.SetupHttpObject();
begin
    try
      IDHTTP1.HandleRedirects := TRUE;
      IDHTTP1.AllowCookies := true;
      IDHTTP1.Request.CacheControl := 'no-cache';
      IdHTTP1.ReadTimeout := 60000;
       _basePath:= GetBaseUrl;
    except
      on E: Exception do
        begin
          Global.LogError(E, 'SetupHttpObject');
        end;
    end;
end;

// Then have an onwork event
procedure TCrystalReportFrame.HttpWork(ASender: TObject; AWorkMode: TWorkMode; AWorkCount: Int64);
var
  Http: TIdHTTP;
  ContentLength: Int64;
  Percent: Integer;
begin
  Http := TIdHTTP(ASender);
  ContentLength := Http.Response.ContentLength;

end;

// The actual process
procedure TCrystalReportFrame.ProcessHttpRequest(const parameters: string);
var
  url : string;
begin
  try
      try
      SetupHttpObject;
       IdHTTP1.OnWork:= HttpWork;
       url := format('%s&%s', [_basePath, parameters]);
        url := IdHTTP1.Post(url);
      except
        on E: Exception do
          begin
            Global.LogError(E, 'ProcessHttpRequest');
          end;
      end;
    finally
      try
        IdHTTP1.Disconnect;
      except
        begin
        end;
      end;
    end;
end;