具有基本授权和外部服务授权的Spring Boot Rest Api

Question

我创建了支持基本授权的Rest Api。 WebSecurityConfigurerAdapter看起来像这样：

  @Configuration
  @EnableWebSecurity
  public class BasicSecurityConfig extends WebSecurityConfigurerAdapter {

      private static String DEFAULT_ROLE = "USER";

      private final AuthenticationEntryPoint authEntryPoint;
      private final DataSource dataSource;
      private final PasswordEncoder userPasswordEncoder;

      @Autowired
      public BasicSecurityConfig(AuthenticationEntryPoint authEntryPoint, DataSource dataSource, PasswordEncoder userPasswordEncoder) {
          this.authEntryPoint = authEntryPoint;
          this.dataSource = dataSource;
          this.userPasswordEncoder = userPasswordEncoder;
      }

      @Override
      protected void configure(HttpSecurity http) throws Exception {
          // https://docs.spring.io/spring-security/site/docs/current/reference/html/jc.html
          http.csrf().disable().authorizeRequests()
                  .antMatchers("/api/registration/**").permitAll()
                  .antMatchers("/api/dictionary/**").permitAll()
                  .antMatchers("/api/common/**").permitAll()
                  .anyRequest().hasRole(DEFAULT_ROLE)
                  .and().httpBasic()
                  .authenticationEntryPoint(authEntryPoint);
      }

      @Autowired
      public void authentication(AuthenticationManagerBuilder auth) throws Exception {
          auth.jdbcAuthentication().dataSource(dataSource)
                  .usersByUsernameQuery("select login, password_hash, enabled from security.users where login = ?")
                  .authoritiesByUsernameQuery("select u.login, r.code from security.users u, security.user_roles ur, security.roles r where u.id = ur.user_id and ur.role_id = r.id and u.login = ?")
                  .passwordEncoder(userPasswordEncoder);
      }

  }

是否可以通过使用OAuth2授权的外部服务（Facebook等）添加授权？ 你能给我指出一些例子吗？