为什么 Xdocument 给我一个 utf16 声明？

发布于 2024-10-21 02:14:32 字数 678 浏览 4 评论 0原文

我正在创建这样的 XDocument：

XDocument doc = new XDocument(
new XDeclaration("1.0", "utf-8", "yes"));

当我像这样保存文档时 (doc.Save(@"c:\tijd\file2.xml");) ，我得到这个：

<?xml version="1.0" encoding="utf-8" standalone="yes"?>

这是可以的。

但我想将内容返回为xml，我发现了以下代码：

 var wr = new StringWriter(); 
            doc.Save(wr); 
            string s = (wr.GetStringBuilder().ToString());

此代码有效，但字符串's'以此开头：

<?xml version="1.0" encoding="utf-16" standalone="yes"?>

所以它从utf8更改为utf16，这不是我想要的，因为现在我无法在 Internet Explorer 中阅读。

有没有办法阻止这种行为？

原文

i'm creating a XDocument like this:

XDocument doc = new XDocument(
new XDeclaration("1.0", "utf-8", "yes"));

when i save the document like this (doc.Save(@"c:\tijd\file2.xml");) , i get this:

<?xml version="1.0" encoding="utf-8" standalone="yes"?>

which is ok.

but i want to return the content as xml, and i found the following code:

 var wr = new StringWriter(); 
            doc.Save(wr); 
            string s = (wr.GetStringBuilder().ToString());

this code works, but then the string 's' starts with this:

<?xml version="1.0" encoding="utf-16" standalone="yes"?>

so it changed from utf8 to utf16, and that's not what i want, because now i can't read it in internet explorer.

Is there a way to prevent this behaviour?

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那请放手 2024-10-28 02:14:32

StringWriter 宣传自己使用 UTF-16。但这很容易修复：

public class Utf8StringWriter : StringWriter
{
    public override Encoding Encoding { get { return Encoding.UTF8; } }
}

对于您的特定情况来说这应该足够了。一个更全面的实现将：

使构造函数与 StringWriter 中的构造函数相匹配
也允许在构造函数中指定编码

StringWriter advertises itself as using UTF-16. It's easy to fix though:

public class Utf8StringWriter : StringWriter
{
    public override Encoding Encoding { get { return Encoding.UTF8; } }
}

That should be enough in your particular case. A rather more well-rounded implementation would:

Have constructors matching those in StringWriter
Allow the encoding to be specified in the constructor too

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愁以何悠 2024-10-28 02:14:32

使用继承的非常好的答案，只需记住覆盖初始值设定项

   public class Utf8StringWriter : StringWriter
    {
        public Utf8StringWriter(StringBuilder sb) : base (sb)
        {
        }
        public override Encoding Encoding { get { return Encoding.UTF8; } }
    }

Very good answer using inheritance, just remember to override the initializer

   public class Utf8StringWriter : StringWriter
    {
        public Utf8StringWriter(StringBuilder sb) : base (sb)
        {
        }
        public override Encoding Encoding { get { return Encoding.UTF8; } }
    }

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