If I have a handler interceptor that loads a user object, adds it to request attri, do I cast to get object?

Question

I plan to create a Handler interceptor that will fire before the controller gets called (or I'll do this pre-action firing).

I will then check the user's cookie, and load the user object based on the sessionid in the cookie.

I will then add the user object to the request attributes.

Now if I want to retrieve the user object in my controllers action, do I cast it to (User) ?

I believe in my freemarker template I can just do ${user.name} correct? or is it user.getUsername ?

Answer 1

First, you'd better place the user in the session, so that the cookie > user conversion does not happen on each request.

Second, you can just get it from there (session/request) by calling

User user = (User) session.getAttribute(USER_KEY); // this is s String constant

Alternatively, you can make a class UserHolder, where you pass an HttpSession and it gives you the user, thus sparing the casts in your controller cote.

The same approach can be used with HttpServletRequest.