这是c++17的用法：
#include
#include <unordered_map>
#include
#include
#include <nlohmann/json.hpp>
// 使用nlohmann/json库
using json = nlohmann::json;
// 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",
},