How do I get a UserDetails object from a Principal object?

[Dave Alvarado]

Hi,

I'm using Spring 3.1.0.RELEASE and Spring security 3.1. To better help with JUnit testing, I was told I can inject my Princpal object into my controller methods ...

	@RequestMapping(method = RequestMethod.POST)
	public String saveUserEventFeeds(final HttpServletRequest request, 
									 @ModelAttribute("user") final Registration currentUser,
									 Principal principal) {
		...
		final Registration currentUser = (Registration) principal;

The problem is I can no longer get back to my original UserDetails object that I logged in with. I get a ClassCastException on the "final Registration currentUser = (Registration) principal" line above. Before, I used

final Registration currentUser = (Registration) SecurityContextHolder.getContext().getAuthentication().getPrincipal();

and everything worked like a dream, except I couldn't easily do JUnit testing. How do I get my UserDetails object from an injected Principal? Here is the domain object I'm logging in with ...

@Entity
@Table(name = "USERS")
public class Registration implements UserDetails, Serializable {

	@Id
	@Column(name = "ID")
	@GeneratedValue(strategy=GenerationType.AUTO)
	private Integer id;

	@NotEmpty
	@Column(name = "USERNAME")
	private String username;
	@NotEmpty
	@Size(min = 4)
	@Column(name = "PASSWORD")
	private String password;
	@Transient
	private String confirmPassword;
	@NotEmpty
	@Email
	@Column(name = "EMAIL")
	private String email;
	@Column(name = "FIRST_NAME")
	private String firstName;
	@Column(name = "LAST_NAME")
	private String lastName;
	@OneToMany(fetch = FetchType.EAGER, targetEntity = EventFeed.class)
    @JoinTable(name = "USER_EVENT_FEEDS", joinColumns = { @JoinColumn(name = "USER_ID") }, inverseJoinColumns = { @JoinColumn(name = "EVENT_FEED_ID") })
	private Set<EventFeed> userEventFeeds = new HashSet<EventFeed>(0);
	@OneToMany(fetch = FetchType.EAGER, targetEntity = Role.class)
    @JoinTable(name = "USER_ROLES", joinColumns = { @JoinColumn(name = "USER_ID") }, inverseJoinColumns = { @JoinColumn(name = "ROLE_ID") })
	private Set<Role> userRoles = new HashSet<Role>(0);
	...
	// getters and setters follow

[Dave Alvarado]

To get a UserDetails object from a Principal object use

final UserDetails currentUser = (UserDetails) ((Authentication) principal).getPrincipal();

Now with all the extra time you've saved by finding this answer, you can go back to checking your MyLife account, -

[Mark Spritzler]

Dave Alvarado wrote:To get a UserDetails object from a Principal object use

final UserDetails currentUser = (UserDetails) ((Authentication) principal).getPrincipal();

Now with all the extra time you've saved by finding this answer, you can go back to checking your MyLife account, -

Who uses MyLife???

Thanks

Mark