C++

JSON: Array of Objects

See more JSON Examples

Here we have a JSON object that contains an array, where each element in the array is a JSON object. This example demonstrates how to access the objects contained within an array.

{ 
  "employees":[
    {"firstName":"John", "lastName":"Doe"},
    {"firstName":"Anna", "lastName":"Smith"},
    {"firstName":"Peter","lastName":"Jones"}
  ]
}

C++

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

void ChilkatSample(void)
    {
    bool success = false;

    CkJsonObject json;

    // This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars).
    // The presence of whitespace chars for pretty-printing makes no difference to the Load
    // method. 
    const char *jsonStr = "{\"employees\":[{\"firstName\":\"John\", \"lastName\":\"Doe\"},{\"firstName\":\"Anna\", \"lastName\":\"Smith\"},{\"firstName\":\"Peter\",\"lastName\":\"Jones\"}]}";

    success = json.Load(jsonStr);
    if (success != true) {
        std::cout << json.lastErrorText() << "\r\n";
        return;
    }

    // Get the "employees" array.
    CkJsonArray *employees = json.ArrayOf("employees");
    if (json.get_LastMethodSuccess() == false) {
        std::cout << "employees member not found." << "\r\n";
        return;
    }

    // Iterate over each employee, getting the JSON object at each index.
    int numEmployees = employees->get_Size();
    int i = 0;
    while (i < numEmployees) {

        CkJsonObject *empObj = employees->ObjectAt(i);

        std::cout << "employee[" << i << "] = " << empObj->stringOf("firstName") << " " << empObj->stringOf("lastName") << "\r\n";
        delete empObj;

        i = i + 1;
    }

    delete employees;
    }