error C4996: ‘Json::Reader::Char’: Use CharReader and CharReaderBuilder instead

1、编译下面代码时，遇到标题中的错误

const char* str = "{\"name\":\"xiaoming\",\"age\":18}";
    Json::Value root;
    Json::Reader reader;
    if (!reader.parse(str, root))
    {
        cout << "Parse from str failed\n";
        return;
    }  

    string name = root["name"].asCString();
    int age = root["age"].asInt();
    std::cout << "name: " << name << "  age:" << age;  

2、解决方法，根据提示修改代码，如下：

    Json::CharReaderBuilder b;
    Json::CharReader* reader(b.newCharReader());
    Json::Value root;
    JSONCPP_STRING errs;
    bool ok = reader->parse(str, str + std::strlen(str), &root, &errs);
    if (ok&&errs.size() == )
    {
        std::string upload_id = root["uploadid"].asString();  // 访问节点，upload_id = "UP000000"
        int code = root["code"].asInt();    // 访问节点，code = 100
    }
    delete reader;