如何使用w3c sitemap.xsd验证w3c网站地图和Google网站地图？

Question

w3c sitemap.xsd: http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd
It looks like this:

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" targetNamespace="http://www.sitemaps.org/schemas/sitemap/0.9" elementFormDefault="qualified">

I have two sitemap file.
1. w3c sitmap file, like this:

<?xml version="1.0" encoding="UTF-8"?>                                                                                                                                                                                                       
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<url><loc>http://t.qq.com/p/t/42509089158929/</loc></url>
</urlset>

2.google-sitemap file, like this：

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.google.com/schemas/sitemap/0.9"> 
<url>
<loc>http://blog.ifeng.com/article/11487489.html</loc>
<lastmod>2011-05-23T09:33:01+08:00</lastmod>
<changefreq>daily</changefreq>
<priority>1.0</priority>
</url>
</urlset>

I use w3c sitemap.xsd to validate these two files by xmllint.
1. w3c stitemap file, normal and success
2. google-sitemap file, output like below

$ xmllint --schema sitemap.xsd sitemap_google.xml  --noout 
sitemap_google.xml:2: element urlset: Schemas validity error : Element '{http://www.google.com/schemas/sitemap/0.9}urlset': No matching global declaration available for the validation root.
sitemap_google.xml fails to validate

I think, the problem is the namespace is different in google-sitemap.xml and sitemap.xsd. How should I do to use sitemap.xsd to validate these two sitemap file?

Thanks!

Answer 1

If there is no reference to the sitemaps.org sitemap schema in the google sitemap instance document then I don't see how you are supposed to validate it or even why you would want to.

By including the namespace at the top of the file, the google sitemap instance is clearly stating that it is an instance of the google.com sitemap schema and not the sitemaps.org sitemap schema.