Updating AccountController to use LdapUserDetailsService

We will now update the AccountController object to use the LdapDetailsUserDetailsService interface to look up the user that it displays:

//src/main/java/com/packtpub/springsecurity/web/controllers/AccountControll er.java
@Controller
public class AccountController {
    private final UserDetailsService userDetailsService;
    public AccountController(UserDetailsService userDetailsService) {
       if (userDetailsService == null) {
          throw new IllegalArgumentException("userDetailsService cannot be null");
       }
       this.userDetailsService = userDetailsService;
    }
    @RequestMapping("/accounts/my")
    public String view(Model model) {
&...