UserDetailsService.java 文件源码

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);
    String lowercaseLogin = login.toLowerCase();
    Optional<User> userFromDatabase = userRepository.findOneByLoginOrEmail(lowercaseLogin, lowercaseLogin);
    return userFromDatabase.map(user -> {
        if (!user.getActivated()) {
            throw new UserNotActivatedException("User " + lowercaseLogin + " was not activated");
        }
        List<GrantedAuthority> grantedAuthorities = user.getAuthorities().stream()
                .map(authority -> new SimpleGrantedAuthority(authority.getName()))
            .collect(Collectors.toList());
        return new org.springframework.security.core.userdetails.User(lowercaseLogin,
            user.getPassword(),
            grantedAuthorities);
    }).orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the " +
    "database"));
}