带有C#对象的前缀和名称空间

本文关键字:空间 前缀 对象 带有 | 更新日期: 2023-09-27 18:26:30

我正在尝试创建一个POST函数,该函数将C#类对象串行化为XML。

我遇到的最大困难是向子根元素的子元素添加名称空间前缀,因此在本例中,仅contact子元素。

我似乎能够将前缀添加到contact的子元素上的唯一方法是通过SerializerNamespace类添加它们,但我只能将其附加到根元素CreateContact

我怎样才能做到这一点?

当前生成的XML:

<?xml version='"1.0'"?>
<CreateContact xmlns:a="http://foo.co.uk/Contact" xmlns="http://foo.co.uk">
<a:contact>
<a:Email>stest@gmail.com</a:Email>
<a:FirstName>Simon</a:FirstName>
<a:LastName>Test</a:LastName>
<a:Phone>09088408501</a:Phone>
<a:Title>Mr</a:Title>
</a:contact>
</CreateContact>

系列化功能:

public static void CreateContact(Contact contact)
{
    string tmp = url;
    string xml = "";
    string result = "";
    XmlDocument xd = new XmlDocument();
    var cc = new CreateContact();
    cc.contact = contact;
    var xs = new XmlSerializer(cc.GetType());
    XmlSerializerNamespaces xsn = new XmlSerializerNamespaces();
    xsn.Add("a", "http://foo.co.uk/Contact");
    using (MemoryStream ms = new MemoryStream())
    {
    xs.Serialize(ms, cc, xsn);
    ms.Position = 0;
    xd.Load(ms);
    xml = xd.InnerXml;
    }
    using (WebClient web = new WebClient())
    {
    web.Credentials = new NetworkCredential(username, password);
    web.Headers.Add("Content-Type", "application/xml");
    try
    {
        result = web.UploadString(tmp, "POST", xml);
    }
    catch (WebException ex)
    {
    }
    }
}

XML类构造:

[Serializable()]
[XmlRoot(ElementName = "CreateContact", Namespace = "http://foo.co.uk")]
public class CreateContact
{
    [XmlElement(ElementName = "contact", Namespace = "http://foo.co.uk/Contact")]
    public Contact contact { get; set; }
}
[DataContract(Name = "Contact", Namespace = "http://foo.co.uk/Contact")]
[XmlType("a")]
public class Contact
{
    [XmlElement(ElementName = "Email", Namespace = "http://foo.co.uk/Contact")]
    [DataMember(Name = "Email")]
    public string Email { get; set; }
    [XmlElement(ElementName = "FirstName", Namespace = "http://foo.co.uk/Contact")]
    [DataMember(Name = "FirstName")]
    public string Firstname { get; set; }
    [XmlElement(ElementName = "LastName", Namespace = "http://foo.co.uk/Contact")]
    [DataMember(Name = "LastName")]
    public string Lastname { get; set; }
    [XmlElement(ElementName = "Phone", Namespace = "http://foo.co.uk/Contact")]
    [DataMember(Name = "Phone")]
    public string Phone { get; set; }
    [XmlElement(ElementName = "Title", Namespace = "http://foo.co.uk/Contact")]
    [DataMember(Name = "Title")]
    public string Title { get; set; }
}

所需的XML:

<?xml version='"1.0'"?>
<CreateContact  xmlns="http://foo.co.uk">
<contact xmlns:a="http://foo.co.uk/Contact">
<a:Email>stest@gmail.com</a:Email>
<a:FirstName>Simon</a:FirstName>
<a:LastName>Test</a:LastName>
<a:Phone>09088408501</a:Phone>
<a:Title>Mr</a:Title>
</contact>
</CreateContact>

带有C#对象的前缀和名称空间

正如注释中所暗示的,产生差异的原因是contact应该在名称空间http://foo.co.uk中,而不是http://foo.co.uk/Contact中。

顺便说一句,还有一些进一步的评论:

  • 您可能不需要DataMember属性,除非您在其他地方使用DataContractSerializer
  • 大多数Xml*属性在这里是多余的,可以通过继承XmlRoot来删除或合并
  • 如果您只需要XML字符串,那么最好串行化为StringWriter,而不是流,然后加载到DOM中以获取文本(如果您需要XML声明来指定utf-8,请参阅此问题)

因此,您将得到如下XML:

var xsn = new XmlSerializerNamespaces();
xsn.Add("a", "http://foo.co.uk/Contact");
var xs = new XmlSerializer(typeof(CreateContact));
using (var stringWriter = new StringWriter())
{
    xs.Serialize(stringWriter, cc, xsn);
    xml = stringWriter.ToString();
}

您的类定义为:

[XmlRoot(ElementName = "CreateContact", Namespace = "http://foo.co.uk")]
public class CreateContact
{
    [XmlElement(ElementName = "contact")]
    public Contact Contact { get; set; }
}
[XmlRoot("contact", Namespace = "http://foo.co.uk/Contact")]
public class Contact
{
    public string Email { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Phone { get; set; }
    public string Title { get; set; }
}

完整的例子见这个小提琴。