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(Unicode C) HTTP POST JSON and Parse JSON ResponseDemonstrates how to send a JSON POST and then parse the JSON response.
#include <C_CkJsonObjectW.h> #include <C_CkHttpW.h> #include <C_CkHttpResponseW.h> void ChilkatSample(void) { HCkJsonObjectW json; BOOL success; HCkHttpW http; HCkHttpResponseW resp; HCkJsonObjectW jsonResp; const wchar_t *lifeAmount; const wchar_t *lifeResidualAmount; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. json = CkJsonObjectW_Create(); success = CkJsonObjectW_LoadFile(json,L"qa_data/json/jsonBodyForHttpPost.json"); if (success != TRUE) { wprintf(L"%s\n",CkJsonObjectW_lastErrorText(json)); CkJsonObjectW_Dispose(json); return; } http = CkHttpW_Create(); resp = CkHttpW_PostJson2(http,L"https://test.something.com/XYZ/API/v1/CreditInsuranceCalculator/CalculatePremiums",L"application/json",CkJsonObjectW_emit(json)); if (CkHttpW_getLastMethodSuccess(http) != TRUE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkJsonObjectW_Dispose(json); CkHttpW_Dispose(http); return; } jsonResp = CkJsonObjectW_Create(); CkJsonObjectW_Load(jsonResp,CkHttpResponseW_bodyStr(resp)); CkJsonObjectW_putEmitCompact(jsonResp,FALSE); wprintf(L"%s\n",CkJsonObjectW_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 = CkJsonObjectW_stringOf(jsonResp,L"LifeAmount"); lifeResidualAmount = CkJsonObjectW_stringOf(jsonResp,L"LifeResidualAmount"); wprintf(L"LifeAmount = %s\n",lifeAmount); wprintf(L"LifeResidualAmount = %s\n",lifeResidualAmount); CkJsonObjectW_Dispose(json); CkHttpW_Dispose(http); CkJsonObjectW_Dispose(jsonResp); } |
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