jeson配置文件字典

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这是c++17的用法：

#include
#include <unordered_map>
#include
#include
#include <nlohmann/json.hpp>

// 存储设备类型和单板类型的映射
std::unordered_map<int, std::string> deviceTypeMap;
std::unordered_map<int, std::string> boardTypeMap;
std::unordered_map<int, int> deviceIdentifierMap;

// 从配置文件中加载映射
void loadConfiguration(const std::string& configFile) {

std::ifstream file(configFile);
json config;
file >> config;

for (auto& [key, value] : config["deviceTypes"].items()) { int intKey = std::stoi(key, nullptr, 16); deviceTypeMap[intKey] = value["name"]; deviceIdentifierMap[intKey] = value["identifier"]; } for (auto& [key, value] : config["boardTypes"].items()) { int intKey = std::stoi(key, nullptr, 16); boardTypeMap[intKey] = value; } 

}

// 解析MAC地址
void parseMacAddress(const std::string& mac) {

// 删除’-‘分隔符
std::string macNoDash = mac;
macNoDash.erase(std::remove(macNoDash.begin(), macNoDash.end(), ‘-’), macNoDash.end());

// 提取MAC地址中的字节 int byte1 = std::stoi(macNoDash.substr(0, 2), nullptr, 16); int byte2 = std::stoi(macNoDash.substr(2, 2), nullptr, 16); int byte3 = std::stoi(macNoDash.substr(4, 2), nullptr, 16); int byte4 = std::stoi(macNoDash.substr(6, 2), nullptr, 16); int byte5 = std::stoi(macNoDash.substr(8, 2), nullptr, 16); int byte6 = std::stoi(macNoDash.substr(10, 2), nullptr, 16); // 查找设备类型和标识符 std::string deviceType = deviceTypeMap[byte2]; int identifier = deviceIdentifierMap[byte2]; std::string boardType = boardTypeMap[byte5]; // 输出解析结果 std::cout << ": " << deviceType << std::endl; std::cout << ": " << identifier << std::endl; std::cout << ": " << byte4 << "槽" << std::endl; std::cout << ": " << boardType << std::endl; std::cout << ": " << byte6 << "口" << std::endl; 

}

int main() {

// 从配置文件加载映射
loadConfiguration(“config.json”);

// 示例MAC地址 std::string macAddress = "1234-3333-4566"; // 解析MAC地址 parseMacAddress(macAddress); return 0; 

}

配置文件：
“deviceTypes”: {

“0x01”: {“name”: “hhh”, “identifier”: 1},
“0x02”: {“name”: “jjj”, “identifier”: 2},
“0x03”: {“name”: “hhhh”, “identifier”: 3},

}, "boardTypes": { "0x00": "ggg", "0x01": "jjj", "0x02": "lllll", },