struct MyContainer {
    std::string name;
    std::string address;
    int age;
    list<string> lst;
    double score;
 
};
//1.重载转换函数
void to_json(nlohmann::json& j, const MyContainer& p) {
    j = json{ {"name", p.name}, {"address", p.address}, {"score", p.score},{"age",p.age},{"lst",p.lst} };
}
 
void from_json(const nlohmann::json& j, MyContainer& p) {
    j.at("name").get_to(p.name);
    j.at("address").get_to(p.address);
    j.at("score").get_to(p.score);
    j.at("age").get_to(p.age);
    j.at("lst").get_to(p.lst);

int main()
{
    MyContainer c;
    c.age = 3;
    c.name = "jnoy";
    c.score = 6;
    c.lst.push_back("aa");
    c.lst.push_back("cc");
 
    json j = c;//将结构体转换成json对象
    std::string str= j.dump();//转换字符串
    std::cout << str << std::endl;
 
    //必须在同名称空间，实现to_json，from_json
   auto p= j.get<MyContainer>();//转换结构体
   // json k = c;
    return 0;
}