Json.Net CustomSerialization

Question

我正在序列化一个对象集合，其中包含一个称为动态属性的字典。

发出的默认Json如下所示：

[{"dynamicProperties":{"WatchId":7771,"Issues":0,"WatchType":"x","Location":"Equinix Source","Name":"PI_5570_5580"}},
{"dynamicProperties":{"WatchId":7769,"Issues":0,"WatchType":"x","Location":"Equinix Source","Name":"PI_5570_5574"}},
{"dynamicProperties":{"WatchId":7767,"Issues":0,"WatchType":"x","Location":"Equinix Source","Name":"PI_5570_5572"}},
{"dynamicProperties":{"WatchId":7765,"Issues":0,"WatchType":"y","Location":"Equinix Source","Name":"highlight_SM"}},
{"dynamicProperties":{"WatchId":8432,"Issues":0,"WatchType":"y","Location":"Test Devices","Name":"Cisco1700PI"}}]

我想生成的Json看起来像这样：

[{"WatchId":7771,"Issues":0,"WatchType":"x","Location":"Equinix Source","Name":"PI_5570_5580"},
{"WatchId":7769,"Issues":0,"WatchType":"x","Location":"Equinix Source","Name":"PI_5570_5574"},
{"WatchId":7767,"Issues":0,"WatchType":"x","Location":"Equinix Source","Name":"PI_5570_5572"},
{"WatchId":7765,"Issues":0,"WatchType":"y","Location":"Equinix Source","Name":"highlight_SM"},
{"WatchId":8432,"Issues":0,"WatchType":"y","Location":"Test Devices","Name":"Cisco1700PI"}]

通过阅读Json.Net文档，我看起来可以为我的类构建一个CustomContractResolver，但我找不到关于如何进行此操作的任何细节……有没有人能说明我应该往哪个方向看？

我尝试序列化的类如下所示。

我需要一个允许动态样式行为的类，并且可以在WCF上序列化和反序列化。

 [DataContract]
public class SerializableDynamicObject : IDynamicMetaObjectProvider
{
    [DataMember]
    private IDictionary<string, object> dynamicProperties = new Dictionary<string, object>();

    #region IDynamicMetaObjectProvider implementation
    public DynamicMetaObject GetMetaObject(Expression expression)
    {
        return new SerializableDynamicMetaObject(expression,
            BindingRestrictions.GetInstanceRestriction(expression, this), this);
    }
    #endregion



    #region Helper methods for dynamic meta object support
    internal object setValue(string name, object value)
    {
        dynamicProperties.Add(name, value);
        return value;
    }

    internal object getValue(string name)
    {
        object value;
        if (!dynamicProperties.TryGetValue(name, out value))
        {
            value = null;
        }
        return value;
    }

    internal IEnumerable<string> getDynamicMemberNames()
    {
        return dynamicProperties.Keys;
    }
    #endregion
}

Answer 1

实施ISerializable

[DataContract]
public class SerializableDynamicObject : IDynamicMetaObjectProvider, ISerializable
{
    [DataMember]
    private IDictionary<string, object> dynamicProperties = new Dictionary<string, object>();

    #region IDynamicMetaObjectProvider implementation
    public DynamicMetaObject GetMetaObject(Expression expression)
    {
        return new SerializableDynamicMetaObject(expression,
            BindingRestrictions.GetInstanceRestriction(expression, this), this);
    }
    #endregion



    #region Helper methods for dynamic meta object support
    internal object setValue(string name, object value)
    {
        dynamicProperties.Add(name, value);
        return value;
    }

    internal object getValue(string name)
    {
        object value;
        if (!dynamicProperties.TryGetValue(name, out value))
        {
            value = null;
        }
        return value;
    }

    internal IEnumerable<string> getDynamicMemberNames()
    {
        return dynamicProperties.Keys;
    }
    #endregion

    #region ISerializable Members

    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {
        foreach (var key in dynamicProperties.Keys)
        {
            info.AddValue(key.ToString(), dynamicProperties[key]);
        }
    }

    #endregion
}

现在在一个小的控制台应用程序中测试这段代码...

    static void Main(string[] args)
    {
        SerializableDynamicObject obj1 = new SerializableDynamicObject();
        obj1.setValue("WatchId", 7771);
        obj1.setValue("Issues", 0);
        obj1.setValue("Location", "sample location1");
        obj1.setValue("Name", "sample name 1");

        SerializableDynamicObject obj2 = new SerializableDynamicObject();
        obj2.setValue("WatchId", 7771);
        obj2.setValue("Issues", 0);
        obj2.setValue("Location", "sample location1");
        obj2.setValue("Name", "sample name 1");

        SerializableDynamicObject obj3 = new SerializableDynamicObject();
        obj3.setValue("WatchId", 7771);
        obj3.setValue("Issues", 0);
        obj3.setValue("Location", "sample location1");
        obj3.setValue("Name", "sample name 1");

        SerializableDynamicObject[] dictArray = new
        SerializableDynamicObject[] { 
            obj1, obj2, obj3
        };

        Newtonsoft.Json.JsonSerializer ser = new Newtonsoft.Json.JsonSerializer();
        ser.Serialize(Console.Out, dictArray);
}

这是程序的输出：

{"WatchId":7771，"Issues":0，"Location":"sample location1"，" name ":"sample name 1"}，{"WatchId":7771，"Issues":0，"Location":"sample location2"，"Name":"sample Name 2"}，{"WatchId":7771，"Issues":0，"Location":"sample location3"，"Name":"sample name3"}