代码之家 › 专栏 › 技术社区 › Ivan-Mark Debono

当属性的命名空间为空时,如何在序列化时设置命名空间?

xml c#

Ivan-Mark Debono · 技术社区 · 6 年前

var namespaces = new XmlSerializerNamespaces();
namespaces.Add("xsi", "http://www.w3.org/2001/XMLSchema-instance");
namespaces.Add("abc", "urn:abc");
namespaces.Add(string.Empty, "urn:efg");
namespaces.Add("xyz", "urn:xyz");

我的对象如下(小示例):

[XmlRoot(Namespace = "urn:abc")]
public class RootDocument
{
    public Header Header { get; set; }
}

public class Header
{
    //No namespace here
    public SomeNode SomeNode { get; set; }
}

public class SomeNode 
{
    [XmlElement(Namespace = "urn:xyz")]
    public OtherNode { get; set; }
}

public class OtherNode
{
    [XmlText]
    public string Value { get; set; }
}

班级 SomeNode

当我序列化上述内容时,我得到:

<?xml version="1.0" encoding="utf-16"?>
<abc:RootDocument xmlns="urn:efg" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xyz="urn:xyz" xmlns:abc="urn:abc">
    <abc:Header>
        <abc:SomeNode>
            <xyz:OtherNode>true</xyz:OtherNode>
        </abc:SomeNode>
    </abc:Header>
</abc:RootDocument

但是,输出必须是:

<?xml version="1.0" encoding="utf-16"?>
<abc:RootDocument xmlns:efg="urn:efg" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xyz="urn:xyz" xmlns:abc="urn:abc">
    <abc:Header>
        <efg:SomeNode>
            <xyz:OtherNode>true</xyz:OtherNode>
        </efg:SomeNode>
    </abc:Header>
</abc:RootDocument

我可以在序列化期间自动将命名空间设置为 efg 在所有具有空工作区的节点上(即,属性没有 Namespace 的 XmlElement 设置)?

1 回复 | 直到 6 年前

Barr J 6 年前

如果您想在运行时更改名称空间,您有 XmlAttributeOverrides :

XmlAttributes对象包含属性对象的并集默认情况下作为XML元素。如果要序列化成员作为XM属性,您可以创建一个XmlAttributeAttribute,

使用此重载重写XmlRootAttribute或XmlTypeAttribute。

public class Group
{
   public string GroupName;
   [XmlAttribute]
   public int GroupCode;
}

  public class Sample
  {
    public XmlSerializer CreateOverrider()
    {
       // Create an XmlAttributeOverrides object. 
       XmlAttributeOverrides xOver = new XmlAttributeOverrides();

       /* Create an XmlAttributeAttribute to override the base class
       object's XmlAttributeAttribute object. Give the overriding object
       a new attribute name ("Code"). */
       XmlAttributeAttribute xAtt = new XmlAttributeAttribute();
       xAtt.AttributeName = "Code";

       /* Create an instance of the XmlAttributes class and set the 
       XmlAttribute property to the XmlAttributeAttribute object. */
       XmlAttributes attrs = new XmlAttributes();
       attrs.XmlAttribute = xAtt;

       /* Add the XmlAttributes object to the XmlAttributeOverrides
          and specify the type and member name to override. */
       xOver.Add(typeof(Group), "GroupCode", attrs);

       XmlSerializer xSer = new XmlSerializer(typeof(Group), xOver);
       return xSer;
    }
  }

还有一个,用 XmlSerializerNamespaces :

[XmlRoot("Node", Namespace="http://somenamepsace")]
public class MyType {
    [XmlElement("childNode")]
    public string Value { get; set; }
}

static class Program
{
    static void Main()
    {
        XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
        ns.Add("myNamespace", "http://somenamepsace");
        XmlSerializer xser = new XmlSerializer(typeof(MyType));
        xser.Serialize(Console.Out, new MyType(), ns);
    }
}