Question

我需要为序列化提供动态属性名称。

public class Home
{
    public virtual int Id { get; set; } // value: 2

    public virtual string propertyName { get; set; } // value: administration

    public virtual string Text { get; set; } // value: text1
}

应序列化为：

{
  "Id": 2,
  "administration": "text1"
}

有什么方法可以序列化吗？哪个是反序列化的最佳方法？

Answer 1

添加一个返回ToJObject的{{1}}方法。

JObject

然后对于public JObject ToJObject() { JObject jObject = new JObject() { { "Id", Id }, { propertyName, Text } } return jObject; }，我可能会创建一个像这样的工厂方法：

Deserializing

因为如果你有多个其他值，我会将它改为开关或确保只传递所需的JObject。

Answer 2

以this link为例，

使用扩展方法PropertyRenameAndIgnoreSerializerContractResolver，

所以新模型看起来像

public class Home
{
    [JsonProperty("firstName")]
    public int Id { get; set; } // value: 2

    //public Dictionary<string,string> dictionary { get; set; }

    [JsonProperty("propertyName")]
    public string propertyName { get; set; } // value: administration

    [JsonIgnore]
    public string Text { get; set; } // value: text1
}

和序列化类

var home = new Home();

home.Id = 2;
home.propertyName = "text1";

var jsonResolver = new PropertyRenameAndIgnoreSerializerContractResolver();
jsonResolver.RenameProperty(typeof(Home), "propertyName", "administration");

var serializerSettings = new JsonSerializerSettings();
serializerSettings.ContractResolver = jsonResolver;

var json = JsonConvert.SerializeObject(home, serializerSettings);

给出欲望输出。

PropertyRenameAndIgnoreSerializerContractResolver

public class PropertyRenameAndIgnoreSerializerContractResolver : DefaultContractResolver
{
    private readonly Dictionary<Type, HashSet<string>> _ignores;
    private readonly Dictionary<Type, Dictionary<string, string>> _renames;

    public PropertyRenameAndIgnoreSerializerContractResolver()
    {
        _ignores = new Dictionary<Type, HashSet<string>>();
        _renames = new Dictionary<Type, Dictionary<string, string>>();
    }

    public void IgnoreProperty(Type type, params string[] jsonPropertyNames)
    {
        if (!_ignores.ContainsKey(type))
            _ignores[type] = new HashSet<string>();

        foreach (var prop in jsonPropertyNames)
            _ignores[type].Add(prop);
    }

    public void RenameProperty(Type type, string propertyName, string newJsonPropertyName)
    {
        if (!_renames.ContainsKey(type))
            _renames[type] = new Dictionary<string, string>();

        _renames[type][propertyName] = newJsonPropertyName;
    }

    protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)
    {
        var property = base.CreateProperty(member, memberSerialization);

        if (IsIgnored(property.DeclaringType, property.PropertyName))
            property.ShouldSerialize = i => false;

        if (IsRenamed(property.DeclaringType, property.PropertyName, out var newJsonPropertyName))
            property.PropertyName = newJsonPropertyName;

        return property;
    }

    private bool IsIgnored(Type type, string jsonPropertyName)
    {
        if (!_ignores.ContainsKey(type))
            return false;

        return _ignores[type].Contains(jsonPropertyName);
    }

    private bool IsRenamed(Type type, string jsonPropertyName, out string newJsonPropertyName)
    {
        Dictionary<string, string> renames;

        if (!_renames.TryGetValue(type, out renames) || !renames.TryGetValue(jsonPropertyName, out newJsonPropertyName))
        {
            newJsonPropertyName = null;
            return false;
        }

        return true;
    }
}

序列化的动态属性名称

2 个答案: