解析 Json 响应多个对象 C# unity

Question

我正在尝试构建多人游戏，其中 Java 是我的服务器，Unity 是我的 Clinet。 我能够将数据发送到服务器并在服务器（Java 服务器）中以 Json 格式读取数据但是当我尝试读取响应时，我遇到了问题。 我无法正确 map Json 对在 Unity 中创建的类的响应。

如下请见。

public class Player
{
    public string playerID;
    public string name;
    public string playerPosX;
    public string playerPosY;
    public string playerPosZ;
}

public class Lobby 
{

    public string lobbyID;

    public ArrayList player;
}


lobby = JsonUtility.FromJson<Lobby>(response);
Debug.Log(lobby.lobbyID);
Debug.Log(lobby.player.Count);

我得到 json 数据为

{"player":[{"playerID":"P1","name":"","playerPosX":"","playerPosY":"","playerPosZ":"","myne":false}],
"lobbyID":"L1"
}

我收到以下错误。 在第二个日志 Object 引用未设置为 object 的实例

Answer 1

Not sure if you're locked into using the Unity Json utility, but I had success with your Json string using the Newtonsoft.Json nuget library:

using Newtonsoft.Json;

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            string json = "{\"player\":[{\"playerID\":\"P1\",\"name\":\"\",\"playerPosX\":\"\",\"playerPosY\":\"\",\"playerPosZ\":\"\",\"myne\":false}],\"lobbyID\":\"L1\"}";
            Lobby lobby = JsonConvert.DeserializeObject<Lobby>(json);
            System.Diagnostics.Debug.WriteLine(lobby.lobbyID);
            System.Diagnostics.Debug.WriteLine(lobby.player.Length);
        }
    }

    public class Lobby
    {
        public Player[] player { get; set; }
        public string lobbyID { get; set; }
    }

    public class Player
    {
        public string playerID { get; set; }
        public string name { get; set; }
        public string playerPosX { get; set; }
        public string playerPosY { get; set; }
        public string playerPosZ { get; set; }
        public bool myne { get; set; }
    }
}

Output 是：

L1
1

这就是我收集的你正在寻找的东西。

Answer 2

这个结构应该可以工作，反序列化为 Lobby 类型：

public class Player
{
    public string playerID;
    public string name;
    public string playerPosX;
    public string playerPosY;
    public string playerPosZ;
    public bool myne;
}

public class Lobby
{
    public List<Player> player;
    public string lobbyID;
}