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(MFC) 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 C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkStringBuilder.h>
#include <CkJsonArray.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    CkString strOut;

    //  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.
    CkStringBuilder sb;
    bool bCrlf = true;
    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:
    CkJsonArray jsonArray;
    bool success = jsonArray.LoadSb(sb);
    if (success != true) {
        strOut.append(jsonArray.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Get some information from each record in the array.
    int numRecords = jsonArray.get_Size();
    int i = 0;
    while (i < numRecords) {
        strOut.append("------ Record ");
        strOut.appendInt(i);
        strOut.append(" -------");
        strOut.append("\r\n");

        CkJsonObject *jsonRecord = jsonArray.ObjectAt(i);

        //  Examine information for this record
        int numTelefones = jsonRecord->SizeOfArray("telefones");
        strOut.append("Number of telefones: ");
        strOut.appendInt(numTelefones);
        strOut.append("\r\n");
        int j = 0;
        while (j < numTelefones) {
            jsonRecord->put_J(j);
            strOut.append("  telefones numero: ");
            strOut.append(jsonRecord->stringOf("telefones[j].numero"));
            strOut.append("\r\n");
            strOut.append("  telefones tipo: ");
            strOut.append(jsonRecord->stringOf("telefones[j].tipo"));
            strOut.append("\r\n");
            strOut.append("  telefones id: ");
            strOut.append(jsonRecord->stringOf("telefones[j].id"));
            strOut.append("\r\n");
            j = j + 1;
        }

        strOut.append("cnpj: ");
        strOut.append(jsonRecord->stringOf("cnpj"));
        strOut.append("\r\n");
        strOut.append("rua: ");
        strOut.append(jsonRecord->stringOf("rua"));
        strOut.append("\r\n");
        //  ...

        int numContatos = jsonRecord->SizeOfArray("contatos");
        strOut.append("Number of contatos: ");
        strOut.appendInt(numContatos);
        strOut.append("\r\n");
        j = 0;
        while (j < numContatos) {
            jsonRecord->put_J(j);

            numTelefones = jsonRecord->SizeOfArray("contatos[j].telefones");
            strOut.append("  Number of telefones: ");
            strOut.appendInt(numTelefones);
            strOut.append("\r\n");
            int k = 0;
            while (k < numTelefones) {
                jsonRecord->put_K(k);
                strOut.append("  telefones numero: ");
                strOut.append(jsonRecord->stringOf("contatos[j].telefones[k].numero"));
                strOut.append("\r\n");
                strOut.append("  telefones tipo: ");
                strOut.append(jsonRecord->stringOf("contatos[j].telefones[k].tipo"));
                strOut.append("\r\n");
                strOut.append("  telefones id: ");
                strOut.append(jsonRecord->stringOf("contatos[j].telefones[k].id"));
                strOut.append("\r\n");
                k = k + 1;
            }

            strOut.append("  cargo: ");
            strOut.append(jsonRecord->stringOf("contatos[j].cargo"));
            strOut.append("\r\n");

            int numEmails = jsonRecord->SizeOfArray("contatos[j].emails");
            strOut.append("  Number of emails: ");
            strOut.appendInt(numEmails);
            strOut.append("\r\n");
            k = 0;
            while (k < numEmails) {
                jsonRecord->put_K(k);
                strOut.append("  emails email: ");
                strOut.append(jsonRecord->stringOf("contatos[j].emails[k].email"));
                strOut.append("\r\n");
                strOut.append("  emails tipo: ");
                strOut.append(jsonRecord->stringOf("contatos[j].emails[k].tipo"));
                strOut.append("\r\n");
                strOut.append("  emails id: ");
                strOut.append(jsonRecord->stringOf("contatos[j].emails[k].id"));
                strOut.append("\r\n");
                k = k + 1;
            }

            j = j + 1;
        }

        delete jsonRecord;
        i = i + 1;
    }

    //  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
    // 


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }

 

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