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(Delphi ActiveX) Loading and Parsing a Complex JSON Array

This example loads a JSON array containing more complex data. It shows how to parse (access) various values contained within the JSON.

Chilkat for Delphi Downloads

Chilkat ActiveX DLL for Delphi

Chilkat non-ActiveX DLL for Delphi

* The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
sb: TChilkatStringBuilder;
bCrlf: Integer;
jsonArray: TChilkatJsonArray;
success: Integer;
numRecords: Integer;
i: Integer;
jsonRecord: IChilkatJsonObject;
numTelefones: Integer;
j: Integer;
numContatos: Integer;
k: Integer;
numEmails: Integer;

begin
// This is the JSON we'll be loading:

// 	[
// 	  {
// 	    "telefones": [
// 	      {
// 	        "numero": "19995555555",
// 	        "tipo": "T",
// 	        "id": 2541437
// 	      } 
// 	    ],
// 	    "cnpj": "11395551000164",
// 	    "rua": "R XAVIER AUGUSTO ROGGE, 22",
// 	    "complemento": "",
// 	    "contatos": [
// 	    ],
// 	    "tipo": "J",
// 	    "razao_social": "SOUP BRASIL LTDA - ME",
// 	    "nome_fantasia": "SOUP BRASIL",
// 	    "bairro": "ABC DOS COLIBRIS",
// 	    "cidade": "TEST",
// 	    "inscricao_estadual": "222.102.222.116",
// 	    "observacao": "",
// 	    "id": 2209595,
// 	    "ultima_alteracao": "2016-12-26 16:22:34",
// 	    "cep": "13555000",
// 	    "suframa": "",
// 	    "estado": "SP",
// 	    "emails": [
// 	      {
// 	        "email": "somebody@terra.com.br",
// 	        "tipo": "T",
// 	        "id": 1065557
// 	      } 
// 	    ],
// 	    "excluido": false
// 	  },
// 	  {
// 	    "telefones": [
// 	    ],
// 	    "cnpj": "12496555500180",
// 	    "rua": "AV ROLF WIEST, 100",
// 	    "complemento": "ANDAR 7 SALA 612 A 620",
// 	    "contatos": [
// 	    ],
// 	    "tipo": "J",
// 	    "razao_social": "SIMPLE SOFTWARE LTDA",
// 	    "nome_fantasia": "",
// 	    "bairro": "DOM ZETIRO",
// 	    "cidade": "APARTVILLE",
// 	    "inscricao_estadual": "",
// 	    "observacao": "",
// 	    "id": 2255594,
// 	    "ultima_alteracao": "2016-12-26 16:28:31",
// 	    "cep": "89255505",
// 	    "suframa": "",
// 	    "estado": "SC",
// 	    "emails": [
// 	    ],
// 	    "excluido": false
// 	  },
// 	  {
// 	    "telefones": [
// 	      {
// 	        "numero": "1938655556",
// 	        "tipo": "T",
// 	        "id": 2555438
// 	      } 
// 	    ],
// 	    "cnpj": "00003555500153",
// 	    "rua": "AV ABCDEF PINTO CATAO, 18",
// 	    "complemento": "",
// 	    "contatos": [
// 	      {
// 	        "telefones": [
// 	          {
// 	            "numero": "1999655554",
// 	            "tipo": "T",
// 	            "id": 2555559
// 	          } 
// 	        ],
// 	        "cargo": "zzz de compras",
// 	        "nome": "Gerard",
// 	        "emails": [
// 	          {
// 	            "email": "gerard@terra.com.br",
// 	            "tipo": "T",
// 	            "id": 1065559
// 	          } 
// 	        ],
// 	        "id": 844485,
// 	        "excluido": false
// 	      } 
// 	    ],
// 	    "tipo": "J",
// 	    "razao_social": "TIDY TECNOLOGIA LTDA - EPP",
// 	    "nome_fantasia": "TIDY",
// 	    "bairro": "TUNA",
// 	    "cidade": "JAGUAR",
// 	    "inscricao_estadual": "395.222.441.222",
// 	    "observacao": "ligar sempre depois das 14hs",
// 	    "id": 2255597,
// 	    "ultima_alteracao": "2016-12-28 07:31:52",
// 	    "cep": "13555500",
// 	    "suframa": "",
// 	    "estado": "SP",
// 	    "emails": [
// 	      {
// 	        "email": "xi@tidy.com.br",
// 	        "tipo": "T",
// 	        "id": 10655558
// 	      } 
// 	    ],
// 	    "excluido": false
// 	  } 
// 	]
// 

// Construct a StringBuilder containing the above JSON array.
sb := TChilkatStringBuilder.Create(Self);
bCrlf := 1;
sb.AppendLine('[',bCrlf);
sb.AppendLine('  {',bCrlf);
sb.AppendLine('    "telefones": [',bCrlf);
sb.AppendLine('      {',bCrlf);
sb.AppendLine('        "numero": "19995555555",',bCrlf);
sb.AppendLine('        "tipo": "T",',bCrlf);
sb.AppendLine('        "id": 2541437',bCrlf);
sb.AppendLine('      }',bCrlf);
sb.AppendLine('    ],',bCrlf);
sb.AppendLine('    "cnpj": "11395551000164",',bCrlf);
sb.AppendLine('    "rua": "R XAVIER AUGUSTO ROGGE, 22",',bCrlf);
sb.AppendLine('    "complemento": "",',bCrlf);
sb.AppendLine('    "contatos": [',bCrlf);
sb.AppendLine('    ],',bCrlf);
sb.AppendLine('    "tipo": "J",',bCrlf);
sb.AppendLine('    "razao_social": "SOUP BRASIL LTDA - ME",',bCrlf);
sb.AppendLine('    "nome_fantasia": "SOUP BRASIL",',bCrlf);
sb.AppendLine('    "bairro": "ABC DOS COLIBRIS",',bCrlf);
sb.AppendLine('    "cidade": "TEST",',bCrlf);
sb.AppendLine('    "inscricao_estadual": "222.102.222.116",',bCrlf);
sb.AppendLine('    "observacao": "",',bCrlf);
sb.AppendLine('    "id": 2209595,',bCrlf);
sb.AppendLine('    "ultima_alteracao": "2016-12-26 16:22:34",',bCrlf);
sb.AppendLine('    "cep": "13555000",',bCrlf);
sb.AppendLine('    "suframa": "",',bCrlf);
sb.AppendLine('    "estado": "SP",',bCrlf);
sb.AppendLine('    "emails": [',bCrlf);
sb.AppendLine('      {',bCrlf);
sb.AppendLine('        "email": "somebody@terra.com.br",',bCrlf);
sb.AppendLine('        "tipo": "T",',bCrlf);
sb.AppendLine('        "id": 1065557',bCrlf);
sb.AppendLine('      }',bCrlf);
sb.AppendLine('    ],',bCrlf);
sb.AppendLine('    "excluido": false',bCrlf);
sb.AppendLine('  },',bCrlf);
sb.AppendLine('  {',bCrlf);
sb.AppendLine('    "telefones": [',bCrlf);
sb.AppendLine('    ],',bCrlf);
sb.AppendLine('    "cnpj": "12496555500180",',bCrlf);
sb.AppendLine('    "rua": "AV ROLF WIEST, 100",',bCrlf);
sb.AppendLine('    "complemento": "ANDAR 7 SALA 612 A 620",',bCrlf);
sb.AppendLine('    "contatos": [',bCrlf);
sb.AppendLine('    ],',bCrlf);
sb.AppendLine('    "tipo": "J",',bCrlf);
sb.AppendLine('    "razao_social": "SIMPLE SOFTWARE LTDA",',bCrlf);
sb.AppendLine('    "nome_fantasia": "",',bCrlf);
sb.AppendLine('    "bairro": "DOM ZETIRO",',bCrlf);
sb.AppendLine('    "cidade": "APARTVILLE",',bCrlf);
sb.AppendLine('    "inscricao_estadual": "",',bCrlf);
sb.AppendLine('    "observacao": "",',bCrlf);
sb.AppendLine('    "id": 2255594,',bCrlf);
sb.AppendLine('    "ultima_alteracao": "2016-12-26 16:28:31",',bCrlf);
sb.AppendLine('    "cep": "89255505",',bCrlf);
sb.AppendLine('    "suframa": "",',bCrlf);
sb.AppendLine('    "estado": "SC",',bCrlf);
sb.AppendLine('    "emails": [',bCrlf);
sb.AppendLine('    ],',bCrlf);
sb.AppendLine('    "excluido": false',bCrlf);
sb.AppendLine('  },',bCrlf);
sb.AppendLine('  {',bCrlf);
sb.AppendLine('    "telefones": [',bCrlf);
sb.AppendLine('      {',bCrlf);
sb.AppendLine('        "numero": "1938655556",',bCrlf);
sb.AppendLine('        "tipo": "T",',bCrlf);
sb.AppendLine('        "id": 2555438',bCrlf);
sb.AppendLine('      }',bCrlf);
sb.AppendLine('    ],',bCrlf);
sb.AppendLine('    "cnpj": "00003555500153",',bCrlf);
sb.AppendLine('    "rua": "AV ABCDEF PINTO CATAO, 18",',bCrlf);
sb.AppendLine('    "complemento": "",',bCrlf);
sb.AppendLine('    "contatos": [',bCrlf);
sb.AppendLine('      {',bCrlf);
sb.AppendLine('        "telefones": [',bCrlf);
sb.AppendLine('          {',bCrlf);
sb.AppendLine('            "numero": "1999655554",',bCrlf);
sb.AppendLine('            "tipo": "T",',bCrlf);
sb.AppendLine('            "id": 2555559',bCrlf);
sb.AppendLine('          }',bCrlf);
sb.AppendLine('        ],',bCrlf);
sb.AppendLine('        "cargo": "zzz de compras",',bCrlf);
sb.AppendLine('        "nome": "Gerard",',bCrlf);
sb.AppendLine('        "emails": [',bCrlf);
sb.AppendLine('          {',bCrlf);
sb.AppendLine('            "email": "gerard@terra.com.br",',bCrlf);
sb.AppendLine('            "tipo": "T",',bCrlf);
sb.AppendLine('            "id": 1065559',bCrlf);
sb.AppendLine('          }',bCrlf);
sb.AppendLine('        ],',bCrlf);
sb.AppendLine('        "id": 844485,',bCrlf);
sb.AppendLine('        "excluido": false',bCrlf);
sb.AppendLine('      }',bCrlf);
sb.AppendLine('    ],',bCrlf);
sb.AppendLine('    "tipo": "J",',bCrlf);
sb.AppendLine('    "razao_social": "TIDY TECNOLOGIA LTDA - EPP",',bCrlf);
sb.AppendLine('    "nome_fantasia": "TIDY",',bCrlf);
sb.AppendLine('    "bairro": "TUNA",',bCrlf);
sb.AppendLine('    "cidade": "JAGUAR",',bCrlf);
sb.AppendLine('    "inscricao_estadual": "395.222.441.222",',bCrlf);
sb.AppendLine('    "observacao": "ligar sempre depois das 14hs",',bCrlf);
sb.AppendLine('    "id": 2255597,',bCrlf);
sb.AppendLine('    "ultima_alteracao": "2016-12-28 07:31:52",',bCrlf);
sb.AppendLine('    "cep": "13555500",',bCrlf);
sb.AppendLine('    "suframa": "",',bCrlf);
sb.AppendLine('    "estado": "SP",',bCrlf);
sb.AppendLine('    "emails": [',bCrlf);
sb.AppendLine('      {',bCrlf);
sb.AppendLine('        "email": "xi@tidy.com.br",',bCrlf);
sb.AppendLine('        "tipo": "T",',bCrlf);
sb.AppendLine('        "id": 10655558',bCrlf);
sb.AppendLine('      }',bCrlf);
sb.AppendLine('    ],',bCrlf);
sb.AppendLine('    "excluido": false',bCrlf);
sb.AppendLine('  }',bCrlf);
sb.AppendLine(']',bCrlf);

// Load the JSON array into a JsonArray:
jsonArray := TChilkatJsonArray.Create(Self);
success := jsonArray.LoadSb(sb.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(jsonArray.LastErrorText);
    Exit;
  end;

// Get some information from each record in the array.
numRecords := jsonArray.Size;
i := 0;
while i < numRecords do
  begin
    Memo1.Lines.Add('------ Record ' + IntToStr(i) + ' -------');

    jsonRecord := jsonArray.ObjectAt(i);

    // Examine information for this record
    numTelefones := jsonRecord.SizeOfArray('telefones');
    Memo1.Lines.Add('Number of telefones: ' + IntToStr(numTelefones));
    j := 0;
    while j < numTelefones do
      begin
        jsonRecord.J := j;
        Memo1.Lines.Add('  telefones numero: ' + jsonRecord.StringOf('telefones[j].numero'));
        Memo1.Lines.Add('  telefones tipo: ' + jsonRecord.StringOf('telefones[j].tipo'));
        Memo1.Lines.Add('  telefones id: ' + jsonRecord.StringOf('telefones[j].id'));
        j := j + 1;
      end;

    Memo1.Lines.Add('cnpj: ' + jsonRecord.StringOf('cnpj'));
    Memo1.Lines.Add('rua: ' + jsonRecord.StringOf('rua'));
    // ...

    numContatos := jsonRecord.SizeOfArray('contatos');
    Memo1.Lines.Add('Number of contatos: ' + IntToStr(numContatos));
    j := 0;
    while j < numContatos do
      begin
        jsonRecord.J := j;

        numTelefones := jsonRecord.SizeOfArray('contatos[j].telefones');
        Memo1.Lines.Add('  Number of telefones: ' + IntToStr(numTelefones));
        k := 0;
        while k < numTelefones do
          begin
            jsonRecord.K := k;
            Memo1.Lines.Add('  telefones numero: ' + jsonRecord.StringOf('contatos[j].telefones[k].numero'));
            Memo1.Lines.Add('  telefones tipo: ' + jsonRecord.StringOf('contatos[j].telefones[k].tipo'));
            Memo1.Lines.Add('  telefones id: ' + jsonRecord.StringOf('contatos[j].telefones[k].id'));
            k := k + 1;
          end;

        Memo1.Lines.Add('  cargo: ' + jsonRecord.StringOf('contatos[j].cargo'));

        numEmails := jsonRecord.SizeOfArray('contatos[j].emails');
        Memo1.Lines.Add('  Number of emails: ' + IntToStr(numEmails));
        k := 0;
        while k < numEmails do
          begin
            jsonRecord.K := k;
            Memo1.Lines.Add('  emails email: ' + jsonRecord.StringOf('contatos[j].emails[k].email'));
            Memo1.Lines.Add('  emails tipo: ' + jsonRecord.StringOf('contatos[j].emails[k].tipo'));
            Memo1.Lines.Add('  emails id: ' + jsonRecord.StringOf('contatos[j].emails[k].id'));
            k := k + 1;
          end;

        j := j + 1;
      end;

    i := i + 1;
  end;

// The output for the above code is:

// 	------ Record 0 -------
// 	Number of telefones: 1
// 	  telefones numero: 19995555555
// 	  telefones tipo: T
// 	  telefones id: 2541437
// 	cnpj: 11395551000164
// 	rua: R XAVIER AUGUSTO ROGGE, 22
// 	Number of contatos: 0
// 	------ Record 1 -------
// 	Number of telefones: 0
// 	cnpj: 12496555500180
// 	rua: AV ROLF WIEST, 100
// 	Number of contatos: 0
// 	------ Record 2 -------
// 	Number of telefones: 1
// 	  telefones numero: 1938655556
// 	  telefones tipo: T
// 	  telefones id: 2555438
// 	cnpj: 00003555500153
// 	rua: AV ABCDEF PINTO CATAO, 18
// 	Number of contatos: 1
// 	  Number of telefones: 1
// 	  telefones numero: 1999655554
// 	  telefones tipo: T
// 	  telefones id: 2555559
// 	  cargo: zzz de compras
// 	  Number of emails: 1
// 	  emails email: gerard@terra.com.br
// 	  emails tipo: T
// 	  emails id: 1065559
// 
end;

 

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