JSON.NET无法反序列化包装的集合

时间:2012-05-07 20:03:19

标签: c# json.net

我有一个包装列表,如下所示:

[Serializable]
public class OrderManager : IEnumerable<Order>
{
    public OrderManager()
    { }

    private List<Order> orders = new List<Order>();

    public void AddOrder(Order order)
    {
        orders.Add(order);
    }

    public IEnumerator<Order> GetEnumerator()
    {
        return orders.GetEnumerator();
    }

    System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
    {
        return orders.GetEnumerator();
    }
}

我在这样的客户类中包含一个字段实例:

[Serializable]
public class Customer
{
    public Customer()
    { }

    private OrderManager _orders
        = new OrderManager();
    public OrderManager Orders
    {
        get { return _orders; }
        set { _orders = value; }
    }
}

我像这样创建JSON.NET序列化程序:

private JsonSerializer GetSerializer()
{
    var serializer = new JsonSerializer();

    // on or off the type name handling doesn't help
    //serializer.TypeNameHandling = TypeNameHandling.All;

    var contractResolver = new DefaultContractResolver(true);
    contractResolver.IgnoreSerializableAttribute = false;
    contractResolver.IgnoreSerializableInterface = false;

    serializer.ContractResolver = contractResolver;

    serializer.PreserveReferencesHandling = PreserveReferencesHandling.All;
    serializer.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;

    return serializer;          
}

客户对象的序列化有效,但在反序列化期间我收到错误:

  

将值设置为'_orders'时出错   'Tests.SerializationTests +顾客'。

将TypeNameHandling设置为All我得到这个:

Type specified in JSON 'Tests.SerializationTests+Order[], Tests, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' is not compatible with 'Tests.SerializationTests+OrderManager, Tests, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. Path '_orders.$type', line 1, position 232.

知道如何让Json.NET与包装列表一起玩得很好吗?

3 个答案:

答案 0 :(得分:1)

我猜您需要实施ICollection<Order>

public class OrderManager : IEnumerable<Order>,ICollection<Order>

-

[Serializable]
public class OrderManager : IEnumerable<Order>,ICollection<Order>
{
    public OrderManager()
    { }

    private List<Order> orders = new List<Order>();

    public Order this[int i]
    {
        set { AddOrder(value); }
        get { return orders[i]; }
    }

    public void AddOrder(Order order)
    {
        orders.Add(order);
    }

    public IEnumerator<Order> GetEnumerator()
    {
        return orders.GetEnumerator();
    }

    System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
    {
        return orders.GetEnumerator();
    }

    public void Add(Order item)
    {
        AddOrder(item);
    }

    public void Clear()
    {
        orders.Clear();
    }

    public bool Contains(Order item)
    {
        return orders.Contains(item);
    }

    public void CopyTo(Order[] array, int arrayIndex)
    {
        throw new NotImplementedException();
    }

    public int Count
    {
        get { return orders.Count; }
    }

    public bool IsReadOnly
    {
        get { return false; }
    }

    public bool Remove(Order item)
    {
        return orders.Remove(item);
    }
}

答案 1 :(得分:0)

尝试以下两种方法之一:

在List周围创建一个名为OrderCollection的包装器集合类:

[Serializable]/[DataContract]
public OrderCollection : List<Order> { ... }

或尝试将LIST转换为ARRAY。

让我们知道其中一个是如何工作的。

答案 2 :(得分:0)

我不确定序列化是否可以与IEnumerable一起使用,你可以尝试使用List吗?

[Serializable]
public class OrderManager : List<Order>