Change user roles by userDetailsManager

Question

I would like to change the role of the user. Changing role of the user in the database. Everything is based on Spring Security.

My code:

UserDetails user = userDetailsManager.loadUserByUsername(userData.getUser().getUsername());

user.getAuthorities().add(new SimpleGrantedAuthority(role));

userDetailsManager.updateUser(user);

Error:

Error:(99, 30) java: method add in interface java.util.Collection<E> cannot be applied to
given types;
  required: capture#1 of ? extends org.springframework.security.core.GrantedAuthority
  found: org.springframework.security.core.authority.SimpleGrantedAuthority
  reason: actual argument    
org.springframework.security.core.authority.SimpleGrantedAuthority cannot be converted to   
capture#1 of ? extends org.springframework.security.core.GrantedAuthority by method   
invocation conversion

I don't know why is this error. How can otherwise change the role for the user?

Do SimpleGrantedAuthority extends GrantedAuthority? Can you show it's code. — Evgeni Dimitrov, May 17 '14 at 18:19
Try `GrantedAuthority ga = new SimpleGrantedAuthority(role); user.getAuthorities().add(ga);` — Evgeni Dimitrov, May 17 '14 at 21:07

score 1 · Answer 1 · answered Jul 28 '15 at 19:01

You can update the role of a given user by creating a new UserDetails object from their existing one, then calling UserDetailsManager.updateUser() method as follows:

    UserDetails oldDetails = userDetailsManager.loadUserByUsername(user);
    UserDetails newDetails = new User(user, oldDetails.getPassword(),  newRole);
    userDetailsManager.updateUser(newDetails);

score 1 · Answer 2 · edited May 23 '17 at 10:24

1

the issue is that you can't add a known type into a list that holds an unknown type. (see https://stackoverflow.com/a/3716945/755183)
User is immutable, so in order to modify you should clone existing user and use new roles

edited May 23 '17 at 10:24

Community

1
1

answered Jul 28 '15 at 22:52

hahn

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Change user roles by userDetailsManager

2 Answers2