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Editorial Team
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Asked: 2026-05-26T15:58:04+00:00

Why Grails see URLs without http:// (like www.google.com) as invalid? Only http://google.com and http://www.google.com

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Why Grails see URLs without http:// (like http://www.google.com) as invalid?
Only http://google.com and http://www.google.com are ok.
Is there any way to fix that ?

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  1. Editorial Team

    If you read RFC 1738 (Uniform Resource Locators), it is clear that the URL scheme (in your case, http://), is a full part of URLs. The scheme defines the meaning of the rest of the URL, and thus, can’t be omitted. For instance http://www.google.com is definitely not the same ressource as https://www.google.com, and you should be aware of that when you save a link.

    So URL like www.google.com are not valid, and Grails is right when it rejects them.

    Fixing that should be easy if you know you expect an http URL:

    new Object(url: 'http://' + url).save()

    should do the trick.

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