jQuery中的AJAX，带有空白“ URL”

There is a site, which passes me a parameter token, only if I call the base url of the site. For example, only when I call http://www.site.com it converts it to http://www.site.com?token=979797979. because of this, url-pattern line in my web.xml document looks like:

<url-pattern>/</url-pattern>

I have servlet which processes this call, but when I am trying to call a servlet from Jquery's $.ajax it doesn't work, because the URL has empty string but it needs to have the empty string because the call to the site is to the home URL.

$.ajax({
    type: "GET",
    url: "",
    success: function(data1){ alert(data1) }
}

Maybe I don't understand something. Can anyone help?

Try the URL "/".

jQuery should then perform a GET request on the root URL of your site – in your case "http://www.site.com".