@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        return userRepository.findOneWithAuthoritiesByEmail(login)
            .map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    return userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin)
        .map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        Optional<User> userByEmailFromDatabase = userRepository.findOneWithAuthoritiesByEmail(login);
        return userByEmailFromDatabase.map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    Optional<User> userByLoginFromDatabase = userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin);
    return userByLoginFromDatabase.map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        return userRepository.findOneWithAuthoritiesByEmail(login)
            .map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    return userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin)
        .map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        return userRepository.findOneWithAuthoritiesByEmail(login)
            .map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    return userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin)
        .map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        Optional<User> userByEmailFromDatabase = userRepository.findOneWithAuthoritiesByEmail(login);
        return userByEmailFromDatabase.map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    Optional<User> userByLoginFromDatabase = userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin);
    return userByLoginFromDatabase.map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        return userRepository.findOneWithAuthoritiesByEmailIgnoreCase(login)
            .map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    return userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin)
        .map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        Optional<User> userByEmailFromDatabase = userRepository.findOneByEmailIgnoreCase(login);
        return userByEmailFromDatabase.map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    Optional<User> userByLoginFromDatabase = userRepository.findOneByLogin(lowercaseLogin);
    return userByLoginFromDatabase.map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        return userRepository.findOneWithAuthoritiesByEmail(login)
            .map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    return userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin)
        .map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
   log.debug("Authenticating user '{}'", login);

   if (new EmailValidator().isValid(login, null)) {
      return userRepository.findOneWithAuthoritiesByEmailIgnoreCase(login)
         .map(user -> createSpringSecurityUser(login, user))
         .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
   }

   String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
   return userRepository.findOneWithAuthoritiesByUsername(lowercaseLogin)
      .map(user -> createSpringSecurityUser(lowercaseLogin, user))
      .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        return userRepository.findOneWithAuthoritiesByEmail(login)
            .map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    return userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin)
        .map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        return userRepository.findOneWithAuthoritiesByEmail(login)
            .map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    return userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin)
        .map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

@Override
@Transactional
public UserDetails loadUserByUsername(final String login) {
    log.debug("Authenticating {}", login);

    if (new EmailValidator().isValid(login, null)) {
        return userRepository.findOneWithAuthoritiesByEmail(login)
            .map(user -> createSpringSecurityUser(login, user))
            .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
    }

    String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
    return userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin)
        .map(user -> createSpringSecurityUser(lowercaseLogin, user))
        .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));

}
 

/**
 * 验证是否为邮箱
 */
public static boolean isEmail(String email) {
    return new EmailValidator().isValid(email, null);
}
 

/**
 * 验证是否为邮箱
 */
public static boolean isEmail(String email) {
    return new EmailValidator().isValid(email, null);
}
 

/**
 * 验证是否为邮箱
 */
public static boolean isEmail(String email) {
    return new EmailValidator().isValid(email, null);
}