PUT method may not be an appropriate choice.

[batytskyy]

Not all browsers support PUT method, some of them send POST instead.
Maybe it is more convenient to send by POST then to handle both?

[sashasochka]

@batytskyy, Any references that PUT is not supported in modern browsers? According to this http://stackoverflow.com/questions/535053/which-webbrowsers-use-http-1-1-by-default post all major browsers supported HTTP/1.1 since 1996.

Moreover, we're probably going to use other methods from HTTP/1.1 like DELETE, PATCH and others.

[batytskyy]

But according to this http://stackoverflow.com/questions/13629653/using-put-and-delete-methods-in-spring-mvc it is not so. But there's a solution how to get this query with Spring.

[sashasochka]

Read carefully,

Most browsers don't support action=PUT in HTML forms.

And this is OK, since html forms should support only GET and POST according to HTML specs.

We're using AJAX, not html forms.