大家好,我的 json 序列化有问题。我在 Unity 下使用 Json.NET 包:我正在搜索制作一个数据库,可在我的应用程序上编辑并通过 wwwForm 和一个 php 文件存储在我的服务器上。我可以毫无问题地创建它并将其发布到网上。问题是,当我加载它时,数据库末尾有一个新条目。数据库类是这样的:
public class Database {
public List<Army> armies { get; set;}
public Database() {
armies = new List<Army>();
armies.Add (new Army());
}
}
public class Army
{
public string faction { get; set;}
public List<Unit> army { get; set;}
public Army()
{
faction = "RED";
army = new List<Unit>();
army.Add (new Unit());
}
}
public class Unit
{
public string name { get; set;}
public float fissionTimer { get; set;}
public float HP { get; set;}
public int shield { get; set;}
public float strenght { get; set;}
public float movSpeed { get; set;}
public float attackSpeed { get; set;}
public float farmAggro { get; set;}
public int criticPossibility { get; set;}
public int armorPenetration { get; set;}
public bool isContagious { get; set;}
public int contagePossibility { get; set;}
public string imgName {get;set;}
public Unit()
{
name = "standard";
fissionTimer = 8;
HP = 100;
shield = 0;
strenght = 10;
movSpeed = 5;
attackSpeed = 0.1f;
farmAggro = 0.1f;
criticPossibility = 0;
armorPenetration = 0;
isContagious = false;
contagePossibility = 0;
imgName = "Red";
}
public Unit(string _name, float _fissionTimer, float _HP, int _shield, float _strenght, float _movSpeed, float _attackSpeed,
float _farmAggro, int _criticPossibility, int _armorPen, bool _iscontagious, int _contagePos, string _imgName)
{
name = _name;
fissionTimer = _fissionTimer;
HP = _HP;
shield = _shield;
strenght = _strenght;
movSpeed = _movSpeed;
attackSpeed = _attackSpeed;
farmAggro = _farmAggro;
criticPossibility = _criticPossibility;
armorPenetration = _armorPen;
isContagious = _iscontagious;
contagePossibility = _contagePos;
imgName = _imgName;
}
}
为了序列化和反序列化,我使用了这两种方法:
IEnumerator LoadFile()
{
WWW www = new WWW(dbPath);
yield return www;
var _database = JsonConvert.DeserializeObject<Database> (www.text);
db = _database;
SendMessage ("loaded", SendMessageOptions.DontRequireReceiver);
}
IEnumerator SaveFile(Database db)
{
WWWForm form = new WWWForm();
string serialized = JsonConvert.SerializeObject (db);
form.AddField("theDatabase", serialized);
WWW www = new WWW(phpPath, form);
yield return www;
if (www.error == null)
Debug.Log ("saved" + serialized);
else
Debug.LogError ("error saving database");
}
使用默认构造函数,序列化和反序列化后的结果是这样的:
{
"armies": [
{
"faction": "RED",
"army": [
{
"name": "standard",
"fissionTimer": 8,
"HP": 100,
"shield": 0,
"strenght": 10,
"movSpeed": 5,
"attackSpeed": 0.1,
"farmAggro": 0.1,
"criticPossibility": 0,
"armorPenetration": 0,
"isContagious": false,
"contagePossibility": 0,
"imgName": "Red"
}
]
},
{
"faction": "RED",
"army": [
{
"name": "standard",
"fissionTimer": 8,
"HP": 100,
"shield": 0,
"strenght": 10,
"movSpeed": 5,
"attackSpeed": 0.1,
"farmAggro": 0.1,
"criticPossibility": 0,
"armorPenetration": 0,
"isContagious": false,
"contagePossibility": 0,
"imgName": "Red"
}
]
}
]
}
有 2 个军队和 2 个单位。我哪里做错了?提前致谢
最佳答案
发生这种情况的原因是两件事的结合:
- 您的类构造函数会自动将默认项添加到各自的列表中。 Json.Net 在反序列化期间调用这些相同的构造函数来创建对象实例。
- Json.Net 的默认行为是在反序列化期间重用(即添加到)现有列表而不是替换它们。
要解决此问题,您可以更改代码,使构造函数不会自动将默认项添加到列表中,或者您可以配置 Json.Net 以在反序列化时替换列表而不是重用它们。后者可以通过更改 ObjectCreationHandling
来完成。设置为 Replace
,如下所示:
JsonSerializerSettings settings = new JsonSerializerSettings();
settings.ObjectCreationHandling = ObjectCreationHandling.Replace;
var database = JsonConvert.DeserializeObject<Database>(www.text, settings);
关于c# - 重复序列化和反序列化创建重复项,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24835262/