C

HTTP POST JSON and Parse JSON Response

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Demonstrates how to send a JSON POST and then parse the JSON response. C

#include <C_CkJsonObject.h>
#include <C_CkHttp.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJsonObject json;
    HCkHttp http;
    HCkHttpResponse resp;
    HCkJsonObject jsonResp;
    const char *lifeAmount;
    const char *lifeResidualAmount;

    success = FALSE;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    json = CkJsonObject_Create();

    success = CkJsonObject_LoadFile(json,"qa_data/json/jsonBodyForHttpPost.json");
    if (success == FALSE) {
        printf("%s\n",CkJsonObject_lastErrorText(json));
        CkJsonObject_Dispose(json);
        return;
    }

    http = CkHttp_Create();

    resp = CkHttpResponse_Create();
    success = CkHttp_HttpJson(http,"POST","https://test.something.com/XYZ/API/v1/CreditInsuranceCalculator/CalculatePremiums",json,"application/json",resp);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkJsonObject_Dispose(json);
        CkHttp_Dispose(http);
        CkHttpResponse_Dispose(resp);
        return;
    }

    jsonResp = CkJsonObject_Create();
    CkJsonObject_Load(jsonResp,CkHttpResponse_bodyStr(resp));

    CkJsonObject_putEmitCompact(jsonResp,FALSE);
    printf("%s\n",CkJsonObject_emit(jsonResp));

    // The JSON response to be parsed looks like this:
    // {
    //   "LifeAmount": 513.85,
    //   "LifeResidualAmount": 123.38,
    //   "CriticalIllnessAmount": 0,
    //   "CriticalIllnessResidualAmount": 0,
    //   "DisabilityAmount": 881.70,
    //   "PolicyFee": 0.00,
    //   "PolicyFeeSecondary": 0,
    //   "PolicyFeeHidden": 50.00,
    //   "PolicyFeeHiddenSecondary": 0
    // }

    // We can get the floating point numbers as strings.  Then convert to double
    // using the appropriate string-to-double conversion for your programming language.
    // For example, in C++ use atof.  In C# use Convert.ToDouble.  
    lifeAmount = CkJsonObject_stringOf(jsonResp,"LifeAmount");
    lifeResidualAmount = CkJsonObject_stringOf(jsonResp,"LifeResidualAmount");

    printf("LifeAmount = %s\n",lifeAmount);
    printf("LifeResidualAmount = %s\n",lifeResidualAmount);


    CkJsonObject_Dispose(json);
    CkHttp_Dispose(http);
    CkHttpResponse_Dispose(resp);
    CkJsonObject_Dispose(jsonResp);

    }