Authentication with Spring Security + Spring data + MongoDB

Question

I want to use Spring security with MongoDB (using Spring data) and retrieve the users from my own database for spring security. However, I can not do that since my userservice t

Answer 1

Create your own authentication provider providing a class that extends the UserDetailservice. Ensure content scanning is enable in your spring context xml file.

@Service
public class UserModelService implements UserDetailsService
{
@Autowired
private UserModelRepositoryImpl repository;



public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException
{
    UserModel user = repository.findByUsername(username);

     if( user == null )
        throw new UsernameNotFoundException( "Name not found!" );

      List authorities = Arrays.asList(new SimpleGrantedAuthority( user.getRole()));

      return new User(user.getUsername(), user.getSHA1Password(), authorities );
 }

public void saveUserDetails(UserModel userModel)
{
    repository.save(userModel);
}

}

This class will enable spring query mongo for the username and password required for authentication. Next create the user model class.

public class UserModel
{

private String id;
@Indexed(unique=true)
private String username;
private String password;
 public String getUsername() {
    return username;
}
public void setUsername(String username) {
    this.username = username;
}
public String getPassword() {
    return password;
}
public void setPassword(String password) {
    this.password = password;
}

Create the user implementation class that extends the DAO.

@Service
public class UserModelService implements UserDetailsService
{
@Autowired
private UserModelRepositoryImpl repository;



public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException
{
    UserModel user = repository.findByUsername(username);

     if( user == null )
        throw new UsernameNotFoundException( "Oops!" );

      List authorities = Arrays.asList(new SimpleGrantedAuthority( user.getRole()));

      return new User(user.getUsername(), user.getSHA1Password(), authorities );
 }

Finally configure mongo and you're done.