Can urls contain dots in the path part?

Is this a valid URL? (from a standard point of view)

http://test.com/some开发者_JAVA技巧/path/version/1.2/thing 

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Yes. This is common for versioning web service interfaces. See spec: http://www.w3.org/Addressing/URL/url-spec.txt

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Obviously it is possible. Here is an example

http://static.springsource.org/spring/docs/3.0.x/reference/beans.html.