c# - TextWriter 序列化为 UTF-8 字符串

Question

我使用TextWriter来序列化，因为它很容易在字符串序列化和文件序列化之间切换:

序列化为字符串；

TextWriter stringWriter = new StringWriter();
XmlSerializer serializer = XmlSerializer(typeof(ObjectType))
serializer.Serialize(stringWriter , objetToSerialize)
return stringWriter.ToString();

序列化到文件；

TextWriter fileWriter = new StreamWriter(targetXMLFileName, true, Encoding.UTF8);
XmlSerializer serializer = XmlSerializer(typeof(ObjectType))
serializer.Serialize(fileWriter , objetToSerialize)
fileWriter.Close();

我的问题是，当序列化为字符串时，它会创建一个 UTF-16 ("?xml version="1.0"encoding="utf-16"?")，并且 TestWriter 编码属性为 ReadOnly

我试过:

var memoryStream = new MemoryStream();
TextWriter stringWriter = new StreamWriter(memoryStream, System.Text.Encoding.UTF8);
XmlSerializer serializer = XmlSerializer(typeof(ObjectType))
serializer.Serialize(stringWriter , objetToSerialize)
return stringWriter.ToString();

但它不起作用。它生成此字符串而不是 XML 文档:“System.IO.StreamWriter” O_o

如何将 TextWriter 初始化为 UTF-8 编码

Answer 1

代替 stringWriter.ToString，使用

string xml = System.Text.Encoding.UTF8.GetString(memoryStream.ToArray());
return xml;

这会将您写入的内存流转换为 header 中带有 utf-8 的可打印 XML。