How to identify SPSite and SPWeb in URL?

Question

Can I split the URL to SPSite part and SPWeb part?

consider the follwing:

http://abc/sites/john/_layouts/15/start.aspx

I can easliy to split the URL to SPSite: http://abc/sites/john/ and SPWeb : ""

However, I am scared that there are much more structure of SharePoint URL which I cannot split by the above way

Update:

if a URL like:

http://abc/a/b/c/d/e/f/g/h/i/k/lib1/Forms/AllItems.aspx

i can find the SPSite part: http://abc/ and the library part: /lib1/Forms/AllItems.aspx. How about the /a/b/c/d/e/f/g/h/i/k/? which of them is site collection? Which of them is subsite?

Answer 1

You can create an SPSite object from the specified url, and open an SPWeb in that site. From there you can retrieve the segments you need.

string url = "http://abc/a/b/c/d/e/f/g/h/i/k/lib1/Forms/AllItems.aspx";
using (SPSite site = new SPSite(url))
{
    string sitePart = site.Url;
    string webRelativeUrl = url.Replace(sitePart, string.Empty);

    using (SPWeb web = site.OpenWeb(webRelativeUrl, false)) {
        ...
    }
}

Notice the false parameter in the OpenWeb() method. This specifies that the provided URL does not have to be an exact web url, but can be the url of a page in the web - which would be the case in your example.

Answer 2

If you are using SP2013. You can get the site and web url using _spPageContextInfo on client side.

1. for web : _spPageContextInfo.webAbsoluteUrl
2. for site : _spPageContextInfo.siteAbsoluteUrl

Hope this what you are looking for