How to redirect URLs with trailing slash to the corresponding ones without it?

Question

Spring MVC (3.0) considers URLs with and without trailing slashes as the same URL.

For example:

http://www.example.org/data/something = http:

Answer 1

Based on SEO, I think it is important to make a distinction.

If the URL that finished in the trailing slash exist, is indexed in the search engines and there are links on Internet, a permanent redirection (301) is required as Uddhav Kambli says. The standard redirection (302) will be better than having a duplicated URL, but is not good enough.

However, if the URL never existed, it is not indexed on Internet and there are no external links, the URL does not exist. Therefore a 404, page not found, is a better fit.

WEB-INF/urlrewrite.xml

    
        Remove trailing slash
        ^(.+)/$
        404
        null
    

And in order to complete the configuration ...

add to WEB-INF/web.xml

    UrlRewriteFilter
    org.tuckey.web.filters.urlrewrite.UrlRewriteFilter
    
        confPath
        /WEB-INF/urlrewrite.xml
    


    UrlRewriteFilter
    /*
    REQUEST

Maven

    org.tuckey
    urlrewritefilter
    4.0.3