c# - XmlSerializer 生成没有命名空间前缀的 XML

Question

我必须创建一个包含所有元素前缀的 XML 文件，如下所示:

<ps:Request num="123" xmlns:ps="www.ladieda.com">
   <ps:ClientId>5566</ps:ClientId>
<ps:Request>

当我序列化我的对象时，c# 很聪明，它会这样做:

<Request num="123" xmlns="www.ladieda.com">
   <ClientId>5566</ClientId>
<Request>

这很好，因为 ps: 不是必需的。

但有没有办法强制 C# 序列化所有前缀？

我的序列化代码是这样的(对于传入对象 pObject):

String XmlizedString = null;
MemoryStream memoryStream = new MemoryStream();
XmlSerializer xs = new XmlSerializer(pObject.GetType());
XmlTextWriter xmlTextWriter = new XmlTextWriter(memoryStream, Encoding.UTF8);

xs.Serialize(xmlTextWriter, pObject);
memoryStream = (MemoryStream)xmlTextWriter.BaseStream;
XmlizedString = UTF8ByteArrayToString(memoryStream.ToArray());
return XmlizedString;


private String UTF8ByteArrayToString(Byte[] characters)
{
    UTF8Encoding encoding = new UTF8Encoding();
    String constructedString = encoding.GetString(characters);
    return (constructedString);
}

Answer 1

首先，如果您的字符串的使用者正在处理 XML，那么他们不会关心前缀，因为它(对于 XML)无关紧要。也许他们不理解 XML，并认为他们正在处理一个字符串(可能需要在每个元素上都有字符串“ps:”)。

其次，您应该稍微更改一下代码:

XmlSerializer xs = new XmlSerializer(pObject.GetType());
using (MemoryStream memoryStream = new MemoryStream())
{
    XmlWriterSettings settings = new XmlWriterSettings()
    {
        Encoding = Encoding.UTF8
    };
    using (XmlWriter writer = XmlWriter.Create(memoryStream, settings))
    {
        xs.Serialize(writer, pObject);
    }
    return Encoding.UTF8.GetString(memoryStream.ToArray());
}

如果抛出异常，这将正确处理流和 XmlWriter，停止使用已弃用的 XmlTextWriter 类，但仍返回包含为 UTF-8 编写的 XML 的字符串。

最后，要控制前缀，参见"How to: Qualify XML Element and XML Attribute Names" :

XmlSerializerNamespaces myNamespaces = new XmlSerializerNamespaces();
myNamespaces.Add("ps", "www.ladieda.com");

XmlSerializer xs = new XmlSerializer(pObject.GetType());
using (MemoryStream memoryStream = new MemoryStream())
{
    XmlWriterSettings settings = new XmlWriterSettings()
    {
        Encoding = Encoding.UTF8
    };
    using (XmlWriter writer = XmlWriter.Create(memoryStream, settings))
    {
        xs.Serialize(writer, pObject, myNamespaces);
    }
    return Encoding.UTF8.GetString(memoryStream.ToArray());
}