UTF8文件字符的开头是打破序列化器和读者

Question

好的,我正在尝试使用UTF8文本文件.我一直在努力争取作家为UTF8投入的BOF字符,它几乎可以用来读取文件,包括序列化器和其他文本阅读器.

我得到了前六个字节的数据:

0xEF
0xBB
0xBF
0xEF
0xBB
0xBF

(现在我正在看它,我意识到那里有两个字符.那是UTF8 BOF标记吗？我对它进行双重编码)？

注意序列化器编码为UTF8,然后内存流得到一个字符串为UTF8,然后我用UTF8将字符串写入文件...似乎有很多冗余.思考？

//I'm storing this xml result to a database field. (this one includes the BOF chars)
using (MemoryStream ms = new MemoryStream())
{
    Utility.SerializeXml(ms, root);
    xml = Encoding.UTF8.GetString(ms.ToArray());

}


//later on, I would take that xml and then write it out to a file like this: 
File.WriteAllText(path, xml, Encoding.UTF8);



public static void SerializeXml(Stream output, object data)
{
    XmlSerializer xs = new XmlSerializer(data.GetType());
    XmlWriterSettings settings = new XmlWriterSettings();
    settings.Indent = true;
    settings.IndentChars = "\t";
    settings.Encoding = Encoding.UTF8;
    XmlWriter writer = XmlTextWriter.Create(output, settings);
    xs.Serialize(writer, data);
    writer.Flush();
    writer.Close();
}

Answer 1

是的,这是两个BOM.你编码为UTF-8两次,每次添加一个伪BOM,由于非常不幸的事实:

Encoding.UTF8

意思是"UTF-8带有无意义,无意义的U + FEFF粘在前面以搞砸你的应用程序".尝试改为使用

new UTF8Encoding(false)

这应该会给你一个不那么糟糕的版本.