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(C++) JSON: Access Array ValuesDemonstrates how to access values in a JSON array.
#include <CkJsonObject.h> #include <CkJsonArray.h> void ChilkatSample(void) { CkJsonObject json; const char *jsonStr = "{ \"id\": 1, \"name\": \"A green door\", \"tags\": [\"home\", 22, \"green\"], \"price\": 125 }"; bool success = json.Load(jsonStr); if (success != true) { std::cout << json.lastErrorText() << "\r\n"; return; } // Get the "tags" array, which contains "home", 22, "green" CkJsonArray *tagsArray = json.ArrayOf("tags"); if (json.get_LastMethodSuccess() == false) { std::cout << "tags member not found." << "\r\n"; return; } // Get the value at each array index. // Output will be: // [0] = home // [0] as integer = 0 // [1] = 22 // [1] as integer = 22 // [2] = green // [2] as integer = 0 int arraySize = tagsArray->get_Size(); int i; for (i = 0; i <= arraySize - 1; i++) { const char *sValue = tagsArray->stringAt(i); std::cout << "[" << i << "] = " << sValue << "\r\n"; int iValue = tagsArray->IntAt(i); std::cout << "[" << i << "] as integer = " << iValue << "\r\n"; } delete tagsArray; // Note: The StringAt method returns the value as a string regardless of the type. // The IntAt method returns the value as an integer. If the value does not convert to // an integer, then 0 is returned } |
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