DataContractSerializer可以反序列化没有名称空间的Member?

问题描述

我需要反序列化此xml(无法更改):

I need to deserialize this xml (that I can't change):

<foo:a xmlns:foo="http://example.com">
  <b>string</b>
</foo:a>

我上了这堂课:

[DataContract(Name = "a", Namespace = "http://example.com")]
public class A
{
    [DataMember(Name = "b", Order = 0)]
    public string B;
}

我做到了:

using (var streamObject = new MemoryStream(Encoding.UTF8.GetBytes(xml)))
{
    var ser = new DataContractSerializer(typeof(A));
    return (A)ser.ReadObject(streamObject);
}

我得到一个类A的对象，但是B的内容始终为null.我知道如果xml使用<foo:b>string</foo:b>它将起作用，但是事实并非如此.我该怎么办才能反序列化没有名称空间的DataMember?

I get an object of class A, but the content of B is always null. I know it would work if the xml was using <foo:b>string</foo:b>, but that is not the case. What can I do to deserialize a DataMember with no namespace?

推荐答案

如果可以在反序列化XML之前对其进行预处理，则尝试执行以下操作:

if you can do the pre-processing of xml before deserializing it, then try to do the following:

将数据合同中的命名空间设为空:

make namespace in your datacontract empty:

[DataContract(Name = "a", Namespace = "")]
public class A
{
    [DataMember(Name = "b", Order = 0)]
    public string B;
}

在反序列化之前从XML中删除名称空间属性

remove the namespace attribute from your xml before deserializing it

XDocument doc = XDocument.Parse("your xml here");
XElement root = doc.Root;

XAttribute attr = root.Attribute("xmlns");
if (attr != null)
{
    attr.Remove();
}

，然后反序列化更新的xml:

and then deserialize the updated xml:

string newXml = doc.ToString();

A result = null;
DataContractSerializer serializer = new DataContractSerializer(typeof(A));

using (StringReader backing = new StringReader(newXml))
{
    using (XmlTextReader reader = new XmlTextReader(backing))
    {
        result = (A) serializer.ReadObject(reader);
    }
}

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