The character encoding of the document was not declared, so the encoding was guessed from content. The character encoding needs to be declared in the Content-Type HTTP header, using a meta tag, or using a byte order mark.
该文档未声明字符编码，因此编码是凭内容猜测出来的。字符编码需使用 <meta> 标签或字节顺序标记（BOM），或是在 Content-Type HTTP 头中进行声明。