#include "json/json.h" #include /** * \brief Parse a raw string into Value object using the CharReaderBuilder * class, or the legacy Reader class. * Example Usage: * $g++ readFromString.cpp -ljsoncpp -std=c++11 -o readFromString * $./readFromString * colin * 20 */ int main() { const std::string rawJson = R"({"Age": 20, "Name": "colin"})"; const auto rawJsonLength = static_cast(rawJson.length()); constexpr bool shouldUseOldWay = false; JSONCPP_STRING err; Json::Value root; if (shouldUseOldWay) { Json::Reader reader; reader.parse(rawJson, root); } else { Json::CharReaderBuilder builder; const std::unique_ptr reader(builder.newCharReader()); if (!reader->parse(rawJson.c_str(), rawJson.c_str() + rawJsonLength, &root, &err)) { std::cout << "error" << std::endl; return EXIT_FAILURE; } } const std::string name = root["Name"].asString(); const int age = root["Age"].asInt(); std::cout << name << std::endl; std::cout << age << std::endl; return EXIT_SUCCESS; }