Google网站地图生成器生成了一个sitemap.txt文件，其中包含如下所示的链接：
http://www.domain.com/category.htm?name=some-name&cat_id=8
在这些链接中使用
&代替&是否正确，或者仅仅是站点地图生成器所犯的错误？谢谢。
#1 楼
那是对的。它是与号（&）的HTML实体，并且是在正确编码的URL中的正确字符表示。和号（&）以及<和>是XML和HTML中的特殊字符，需要使用其特殊字符实体进行显示。#2 楼
您的站点地图文件必须为UTF-8编码（保存文件时通常可以这样做）。与所有XML文件一样，任何数据值（包括URL）都必须使用实体转义码作为字符。这可能会有所帮助，http：//sitemaps.org/protocol.php
评论
不幸的是，此链接现在已失效。
–mtness
18-11-14在12:42
#3 楼
您还可以通过查看此站点地图和＆文章
官方XML站点地图协议页
来说服自己。 xml sitemaps协议页面:)
#4 楼
Google rejects the sitemap as broken if it has a & character in an URL. It accepts it when you replace & with &BUT: if you later check the list of crawling errors in the Google webmasters tool, it will report this URL of the sitemap file as broken, because it contains & instead of &.
Thus the correct solution is to change the URL such that it does not contain &. Or report this as bug to Google.
#5 楼
URL-Encoding and XML entity encoding are not the same things.You need URL-Encoding to replace special characters in URLs, such as & which can only be used for the separation of query parameters.
XML entity encoding is for encoding special characters in XML (also XHTML). This means, if you have a URL in an XML (or XHTML) file, and this URL includes some & characters, you have to entity encode it to &. So in a sitemap.xml you will have urls like in the question from Marco Demaio.
评论
Are you sure all ampersands have to be entity-escaped? I thought that was only for those separating parameters in query strings. I've always escaped ampersands within file or folder names or in the parameters themselves using percent-encoding (%26): e.g. http://foo/a%26r.php?foo=1&genre=r%26b
– Lèse majesté
Oct 21 '10 at 19:37
我不确定百分比编码是否有效，因此无法确定。
–John Conde♦
2010-10-21 19:48
@Lèse-因为它是XML文档，所以必须转义它，除非您使用CDATA节点（只是注意到bdadam说了同样的话，但比我早得多）
–马克·亨德森（Mark Henderson）
2010-10-26 20:30
>不必严格要求使用XML编码实体。
–怀特先生
2014-02-20 12:57