无法序列化列表<>使用 DataContractJsonSerializer DynamicProxy2 生成的对象

发布于 2024-09-16 22:55:30 字数 1709 浏览 7 评论 0 原文

我在使用 System.Runtime.Serialization.Json.DataContractJsonSerializer 序列化代理对象的 List 时遇到问题。它对于单个代理对象工作得很好,但是列表使它崩溃。像这样的事情:

using System.Collections.Generic;
using System.Runtime.Serialization;
using Castle.DynamicProxy;
using System.IO;
using NUnit.Framework;

[DataContract] 
public class SimpleViewModel 
{ 
    [DataMember] 
    public virtual int ID { get; set; } 
} 
[Test] 
public void TestSerializeArray() 
{ 
    // Generates a proxy of type "SimpleViewModelProxy"
    var proxyModel = (new ProxyGenerator()).CreateClassProxy<SimpleViewModel>(); 
    proxyModel.ID = 1; 
    //Put it into List<> (it can handle a single item without issue!) 
    var list = new List<SimpleViewModel> { proxyModel }; 
    var serializer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(List<SimpleViewModel>)); 
    using (var stringWriter = new MemoryStream()) 
    { 
        serializer.WriteObject(stringWriter, list); //BOOM CRASH! 
    } 
} 

这样做会给我带来以下异常:

System.Runtime.Serialization.SerializationException : 类型 'Castle.Proxies.SimpleViewModelProxy' 带有数据合约名称 'SimpleViewModelProxy:http://schemas.datacontract.org/2004/07/ Castle.Proxies' 不是预期的。 考虑使用 DataContractResolver 或添加任何静态未知的类型 到已知类型列表 - 对于 例如,通过使用 KnownTypeAttribute 属性或通过 将它们添加到已知列表中 类型传递给 DataContractSerializer。

我可以序列化单个“SimpleViewModelProxy”对象或 List,但不能序列化 List。有没有人有过让这个工作的经验?他们可以提供一些关于我做错了什么的指示吗?

I'm running into an issue using System.Runtime.Serialization.Json.DataContractJsonSerializer to serialize a List<T> of proxied objects. It works fine with a single proxied object, but the List makes it blow up. Something like this:

using System.Collections.Generic;
using System.Runtime.Serialization;
using Castle.DynamicProxy;
using System.IO;
using NUnit.Framework;

[DataContract] 
public class SimpleViewModel 
{ 
    [DataMember] 
    public virtual int ID { get; set; } 
} 
[Test] 
public void TestSerializeArray() 
{ 
    // Generates a proxy of type "SimpleViewModelProxy"
    var proxyModel = (new ProxyGenerator()).CreateClassProxy<SimpleViewModel>(); 
    proxyModel.ID = 1; 
    //Put it into List<> (it can handle a single item without issue!) 
    var list = new List<SimpleViewModel> { proxyModel }; 
    var serializer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(List<SimpleViewModel>)); 
    using (var stringWriter = new MemoryStream()) 
    { 
        serializer.WriteObject(stringWriter, list); //BOOM CRASH! 
    } 
} 

Doing this gives me the following exception:

System.Runtime.Serialization.SerializationException
: Type
'Castle.Proxies.SimpleViewModelProxy'
with data contract name
'SimpleViewModelProxy:http://schemas.datacontract.org/2004/07/
Castle.Proxies' is not expected.
Consider using a DataContractResolver
or add any types not known statically
to the list of known types - for
example, by using the
KnownTypeAttribute attribute or by
adding them to the list of known
types passed to
DataContractSerializer.

I'm able to serialize either a single "SimpleViewModelProxy" object, or a List<SimpleViewModel>, but not a List<SimpleViewModelProxy>. Has anyone had any experience getting this to work? Can they provide some pointers on what I'm doing wrong?

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冰魂雪魄 2024-09-23 22:55:30

您可以尝试将代理的类型添加到已知类型列表中:

var serializer = new DataContractJsonSerializer(
    typeof(List<SimpleViewModel>),
    new[] { proxyModel.GetType() });

You can try to add the type of the proxy to the list of known types:

var serializer = new DataContractJsonSerializer(
    typeof(List<SimpleViewModel>),
    new[] { proxyModel.GetType() });
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