Spring Boot Security，Oauth2 用来自 facebook 的长寿命令牌替换访问令牌

Question

我一直在关注Dave Syer astounding tutorial 在为移动设备（Android 和 iOS）提供 RESTful API 的微服务中实现 OAuth2。我已经使用以下代码配置了网关安全性：

@SpringBootApplication
@EnableDiscoveryClient
@EnableZuulProxy
@EnableCircuitBreaker
@EnableFeignClients
@EnableOAuth2Client
public class GatewayApplication extends WebSecurityConfigurerAdapter {

    private OAuth2ClientContext oauth2ClientContext;
    private SimpleUrlAuthenticationSuccessHandler simpleUrlAuthenticationSuccessHandler;
    private ScoreAuthorizationFilter scoreAuthorizationFilter;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .csrf().disable()
                .antMatcher("/**")
                .authorizeRequests()
                .antMatchers("/", "/test", "/login**", "/webjars/**", "/error**")
                .permitAll()
                .anyRequest()
                .authenticated()
                .and().logout().logoutSuccessUrl("/").permitAll()
                .and().addFilterBefore(ssoFilter(), BasicAuthenticationFilter.class)
                .addFilterBefore(scoreAuthorizationFilter, BasicAuthenticationFilter.class)
        ;
    }

    private Filter ssoFilter() {
        OAuth2ClientAuthenticationProcessingFilter facebookFilter = new OAuth2ClientAuthenticationProcessingFilter("/login/facebook");
        OAuth2RestTemplate facebookTemplate = new OAuth2RestTemplate(facebook(), oauth2ClientContext);
        facebookFilter.setRestTemplate(facebookTemplate);
        UserInfoTokenServices tokenServices = new UserInfoTokenServices(facebookResource().getUserInfoUri(), facebook().getClientId());
        tokenServices.setRestTemplate(facebookTemplate);
        facebookFilter.setTokenServices(tokenServices);
        facebookFilter.setAuthenticationSuccessHandler(simpleUrlAuthenticationSuccessHandler);
        return facebookFilter;
    }

    @Bean
    @ConfigurationProperties("facebook.client")
    public AuthorizationCodeResourceDetails facebook() {
        return new AuthorizationCodeResourceDetails();
    }

    @Bean
    @ConfigurationProperties("facebook.resource")
    public ResourceServerProperties facebookResource() {
        return new ResourceServerProperties();
    }

    @Bean
    public FilterRegistrationBean<OAuth2ClientContextFilter> oauth2ClientFilterRegistration(OAuth2ClientContextFilter filter) {
        FilterRegistrationBean<OAuth2ClientContextFilter> registration = new FilterRegistrationBean<OAuth2ClientContextFilter>();
        registration.setFilter(filter);
        registration.setOrder(-100);
        return registration;
    }

    @Bean
    public RequestInterceptor getFeignClientInterceptor() {
        return new FeignClientInterceptor();
    }

}

事实证明，用户的会话会在一段时间后过期。随着我深入挖掘，我发现 Facebook 不提供刷新令牌。相反，我们可以将短期令牌换成长期令牌 (Facebook long-lived token)。如何覆盖 Spring Security 中实现的标准 OAuth2 流程以向 Facebook 发送另一个请求以获取长期令牌，然后替换旧的访问令牌？

Answer 1

你可以通过像这样扩展OAuth2ClientAuthenticationProcessingFilter类来实现你想要的：

public class CustomAuthenticationProcessingFilter extends OAuth2ClientAuthenticationProcessingFilter {

    private ResourceServerTokenServices tokenServices;

    private AuthenticationDetailsSource<HttpServletRequest, ?> authenticationDetailsSource = new OAuth2AuthenticationDetailsSource();

    private ApplicationEventPublisher eventPublisher;

    private AuthorizationCodeResourceDetails facebook;

    private String longLivedTokenUri;

    public CustomAuthenticationProcessingFilter(String defaultFilterProcessesUrl) {
        super(defaultFilterProcessesUrl);
        setAuthenticationDetailsSource(authenticationDetailsSource);
    }

    @Override
    public void setTokenServices(ResourceServerTokenServices tokenServices) {
        this.tokenServices = tokenServices;
        super.setTokenServices(tokenServices);
    }

    @Override
    public void setApplicationEventPublisher(ApplicationEventPublisher eventPublisher) {
        this.eventPublisher = eventPublisher;
        super.setApplicationEventPublisher(eventPublisher);
    }

    @Override
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response)
            throws AuthenticationException {

        OAuth2AccessToken accessToken;
        try {
            accessToken = restTemplate.getAccessToken();
        } catch (OAuth2Exception e) {
            BadCredentialsException bad = new BadCredentialsException("Could not obtain access token", e);
            publish(new OAuth2AuthenticationFailureEvent(bad));
            throw bad;
        }
        String longLivedToken = getFromFacebook(); //Get long lived token from facebook here
        try {
            OAuth2Authentication result = tokenServices.loadAuthentication(longLivedToken);
            if (authenticationDetailsSource != null) {
                request.setAttribute(OAuth2AuthenticationDetails.ACCESS_TOKEN_VALUE, longLivedToken);
                request.setAttribute(OAuth2AuthenticationDetails.ACCESS_TOKEN_TYPE, accessToken.getTokenType());
                result.setDetails(authenticationDetailsSource.buildDetails(request));
            }
            publish(new AuthenticationSuccessEvent(result));
            return result;
        } catch (InvalidTokenException e) {
            BadCredentialsException bad = new BadCredentialsException("Could not obtain user details from token", e);
            publish(new OAuth2AuthenticationFailureEvent(bad));
            throw bad;
        }

    }

    private void publish(ApplicationEvent event) {
        if (eventPublisher != null) {
            eventPublisher.publishEvent(event);
        }
    }
}

我希望这会有所帮助。