title: how to conditionally show jsp content to logged in users with Spring security
body: <p>I want to show content to any user that is logged in and to hide if they are not logged in. I'm using jsp's and spring security. </p>
  
  <p>Obviously a home grown solution is easily done. But what's the cleanest standard way of achieving this? </p>
  
  <p>Spring security tags don't seem to have nice way that will allow for the addition of new roles in the future.</p>