钉钉氚云到金碟之三 DELPHI从氚云下载数据

DELPHI7下实在难以测试出来，最后在DELPHI XE10 下经过两天测试出来了，能正常下载。

特别注意的是标红处的一些登录参数，要从钉钉氚云专业版系统处获得,然后替换红色处的代号，才能登录下载.先将测试出来的代码上传，逐步完善说明。

 

unit TESTINDY;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes,
  Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, IdIOHandler, Web.UTF8ContentParser,
  IdMultipartFormData, IdIOHandlerSocket, IdIOHandlerStack, IdSSL, IdSSLOpenSSL,
  //
  IdGlobalProtocols,  util_uft8,
  //
  IdBaseComponent, System.JSON, IdComponent, IdTCPConnection, IdTCPClient,
  IdHTTP, Vcl.StdCtrls;

const
  sContentTransferPlaceHolder = 'Content-Transfer-Encoding: %s';
  sContentTransferQuotedPrintable = 'quoted-printable';
  sContentTransferBinary = 'binary';

type
  TForm1 = class(TForm)
    Button1: TButton;
    IdHTTP1: TIdHTTP;
    IdSSLIOHandlerSocketOpenSSL1: TIdSSLIOHandlerSocketOpenSSL;
    Memo1: TMemo;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    function UnicodeToChinese(inputstr: string): string;
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  Url: string;
  streanResponse: TStringStream;
  response: string;
  ResponseStr: string;
  SSLopen: tIdSSLIOHandlerSocketOpenSSL;
  StreamRequest: TStringStream;
  jsonData, tempstr, tempstr2, sjc: string;
  vres, STR: string;
  requeststr: UTF8String;
  AJSON: TJSONObject;
  bytes: SYSTEM.TArray;
begin
  try

    streanResponse := TStringStream.Create('',tencoding.utf8);
   //要注意返回值是UTF8格式的流

    StreamRequest := TStringStream.Create('');

    SSLopen := tIdSSLIOHandlerSocketOpenSSL.Create(IdHTTP1);

    IdHTTP1.IOHandler := SSLopen;
    IdHTTP1.ReadTimeout := 50000;
    IdHTTP1.Request.ContentType := 'application/json';
    IdHTTP1.Request.CustomHeaders.Values['EngineCode'] := 'EngineCode';
    IdHTTP1.Request.CustomHeaders.Values['EngineSecret'] :=
      'EngineSecret';

    STR := '     {   ' + ' "ActionName":"LoadBizObjects",' +
      ' "SchemaCode":"SchemaCode",   ' +
      ' "Filter":"{\"FromRowNum\":   0,\"RequireCount\": false,\"ReturnItems\": [],   \"SortByCollection\": [],\"ToRowNum\": 3,   \"Matcher\": { \"Type\": \"And\",   \"Matchers\": []}}"' +
      ' }';

    Url := 'https://www.h3yun.com/OpenApi/Invoke';

    StreamRequest := TStringStream.Create;

    AJSON := TJSONObject.Create;

    AJSON := TJSONObject.ParseJSONValue(Trim(STR)) as TJSONObject;

    requeststr := AJSON.ToString;

    bytes := TEncoding.UTF8.GetBytes(requeststr);

    IdHTTP1.Request.ContentLength := Length(bytes);

    StreamRequest.Write(bytes, IdHTTP1.Request.ContentLength);
    //以UTF-8编码写入相应的JSON字符流。

    IdHTTP1.Post('https://www.h3yun.com/OpenApi/Invoke', StreamRequest, streanResponse); // 
    vres := streanResponse.DataString;                         // Post返回值Utf8码
    Memo1.Text :=UnicodeToChinese(vres);                 // 显示反馈信息Utf8To

  finally
//    IdHTTP1.Free;
    StreamRequest.Free;
    streanResponse.Free;
  end;
end;

function TForm1.UnicodeToChinese(inputstr: string): string;
var
  i: Integer;
  index: Integer;
  temp, top, last: string;
begin
  index := 1;
  while index >= 0 do
  begin
    index := Pos('U', inputstr) - 1;
    if index < 0 then
    begin
      last := inputstr;
      Result := Result + last;
      Exit;
    end;
    top := Copy(inputstr, 1, index); // 取出 编码字符前的 非 unic 编码的字符，如数字
    temp := Copy(inputstr, index + 1, 6); // 取出编码，包括 u,如u4e3f
    Delete(temp, 1, 2);
    Delete(inputstr, 1, index + 6);
    Result := Result + top + WideChar(StrToInt('$' + temp));
  end;
end;

end.

 

参考帮助如下