Spring boot 我使用的是spring boot 1.4.2，我在oauth2实现方面遇到了问题，我如何获得google或facebook注册ID

我使用的是spring boot 1.4.2，而oauth2实现有问题， 如何获取谷歌或facebook注册ID

@GetMapping("/google") //todo add oauth2 authentication!
public String getGoogle(Principal principal) {
    String password = UUID.randomUUID().toString();
    String encode = passwordEncoder.encode(password);
    UserDetailsModel userDetails = null;
    Collection<? extends GrantedAuthority> authorities = null;
    if (principal != null) {
        OAuth2Authentication oAuth2Authentication = (OAuth2Authentication) principal;

        Authentication authentication = oAuth2Authentication.getUserAuthentication();
        Map<String, Object> map = (Map<String, Object>) authentication.getDetails();
        authorities = authentication.getAuthorities();
         userDetails = userDetailsRepository.findUserDetailsModelByMailId((String) map.get("email"));
        if (userDetails == null) {
            userDetails = new UserDetailsModel();
            userDetails.setFirstname((String) map.get("given_name"));
            userDetails.setLastname((String) map.get("family_name"));
            userDetails.setEmail((String) map.get("email"));
        }
    }

@GetMapping（“/google”）//todo添加oauth2身份验证！
公共字符串getGoogle（主体）{
字符串密码=UUID.randomuid（）.toString（）；
字符串encode=passwordEncoder.encode（密码）；
UserDetailsModel userDetails=null；
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