如何使用JSSONUTINE序列化和逐渐化JSON和JSON阵列？

在Unity中使用JsonUtility序列化和反序列化JSON和JSON数组

问题

如何使用C#在Unity中解析和处理JSON数据（单个对象和数组），特别是使用Boomlagoon.JSON、MiniJSON或JsonUtility？

解答

从Unity 5.3.3版本开始，建议使用JsonUtility处理JSON数据，因为它性能高且简单易用。

1. 单个数据对象的序列化和反序列化：

序列化：

Player playerInstance = new Player();
playerInstance.playerId = "8484239823";
playerInstance.playerLoc = "Powai";
playerInstance.playerNick = "Random Nick";
string playerToJson = JsonUtility.ToJson(playerInstance);

输出：

{"playerId":"8484239823","playerLoc":"Powai","playerNick":"Random Nick"}

反序列化：

string jsonString = "{\"playerId\":\"8484239823\",\"playerLoc\":\"Powai\",\"playerNick\":\"Random Nick\"}";
Player player = JsonUtility.FromJson<Player>(jsonString);

2. JSON数组的序列化和反序列化：

为了处理JSON数组，可以使用来自这个GitHub仓库的辅助类：

辅助类 - JsonHelper.cs

public static class JsonHelper
{
    public static T[] FromJson<T>(string json)
    {
        Wrapper<T> wrapper = JsonUtility.FromJson<Wrapper<T>>(json);
        return wrapper.Items;
    }

    public static string ToJson<T>(T[] array)
    {
        Wrapper<T> wrapper = new Wrapper<T>();
        wrapper.Items = array;
        return JsonUtility.ToJson(wrapper);
    }

    private class Wrapper<T>
    {
        public T[] Items;
    }
}

序列化：

Player[] players = new Player[2];
players[0] = new Player { playerId = "8484239823", playerLoc = "Powai", playerNick = "Random Nick" };
players[1] = new Player { playerId = "512343283", playerLoc = "User2", playerNick = "Rand Nick 2" };
string playersToJson = JsonHelper.ToJson(players);

输出：

{"Items":[{"playerId":"8484239823","playerLoc":"Powai","playerNick":"Random Nick"},{"playerId":"512343283","playerLoc":"User2","playerNick":"Rand Nick 2"}]}

反序列化：

string jsonString = "{\"Items\":[{\"playerId\":\"8484239823\",\"playerLoc\":\"Powai\",\"playerNick\":\"Random Nick\"},{\"playerId\":\"512343283\",\"playerLoc\":\"User2\",\"playerNick\":\"Rand Nick 2\"}]}";
Player[] players = JsonHelper.FromJson<Player>(jsonString);

其他注意事项

• 对于以数字开头或具有数字属性的JSON：可以考虑使用Unity Wiki中的SimpleJSON。
• JsonUtility故障排除：确保类不是数组，具有[Serializable]属性，并且成员未定义为属性（删除{ get; set; }）。

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