Spring Security OAuth2-@ EnableOauth2Sso，但也接受令牌作为身份验证

Question

我有有一个应用程序@EnableOAuth2Sso上的WebSecurityConfigurerAdapter

添加@EnableOAuth2Sso应用程序后，会将我重定向到授权服务器，并在登录到该授权服务器后允许访问。我也想提供API访问权限，所以我希望应用程序能够通过Authorization-
Header传递一个访问令牌来访问我的资源。

Authorization: bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9...

我通过与@EnableOAuth2Sso注意一起使用的身份验证筛选器进行了调试，未选中Authorization-Header值。

之后，我尝试创建自定义过滤器并将此过滤器添加到安全配置中

@Override
public void configure(HttpSecurity http) throws Exception {
  http.addFilter(myCustomFilter)
    ...;
}

但是现在我得到以下异常：

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.servlet.Filter]: Factory method 'springSecurityFilterChain' threw exception; nested exception is org.springframework.security.config.annotation.AlreadyBuiltException: This object has already been built
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
    ... 26 more
Caused by: org.springframework.security.config.annotation.AlreadyBuiltException: This object has already been built
    at org.springframework.security.config.annotation.AbstractSecurityBuilder.build(AbstractSecurityBuilder.java:44)
    at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.springSecurityFilterChain(WebSecurityConfiguration.java:105)
    at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerBySpringCGLIB$$f0788cea.CGLIB$springSecurityFilterChain$5(<generated>)
    at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerBySpringCGLIB$$f0788cea$$FastClassBySpringCGLIB$$7e95689d.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:318)
    at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerBySpringCGLIB$$f0788cea.springSecurityFilterChain(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)

起初，我以为自己在过滤器内做错了什么，但最终我得到了一个普通的过滤器类，除了继续执行过滤器链之外，什么也没做，仍然有相同的错误。

所以我有两个问题：

1. 为什么会出现此异常？
2. 在使用的应用程序中，是否可以对端点进行令牌身份验证@EnableOAuth2Sso？

Answer 1

出现异常的原因是@jah所说的过滤器的顺序。

我做了什么，以达到所要求的认证，包含在授权标头的访问令牌，是创建一个类ApiTokenAccessFilter延伸OAuth2AuthenticationProcessingFilter。该过滤器采用ResourceServerTokenServices构造函数参数，并将无状态标志设置为false。

public class ApiTokenAccessFilter extends OAuth2AuthenticationProcessingFilter {

  public ApiTokenAccessFilter(ResourceServerTokenServices resourceServerTokenServices) {

    super();
    setStateless(false);
    setAuthenticationManager(oauthAuthenticationManager(resourceServerTokenServices));
  }

  private AuthenticationManager oauthAuthenticationManager(ResourceServerTokenServices tokenServices) {

    OAuth2AuthenticationManager oauthAuthenticationManager = new OAuth2AuthenticationManager();

    oauthAuthenticationManager.setResourceId("oauth2-resource");
    oauthAuthenticationManager.setTokenServices(tokenServices);
    oauthAuthenticationManager.setClientDetailsService(null);

    return oauthAuthenticationManager;
  }
}

在我的安全配置中，我使用了此过滤器，如下所示：

@Configuration
@EnableOAuth2Sso
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

  @Autowired
  private ResourceServerTokenServices tokenServices;

  @Override
  public void configure(HttpSecurity http) throws Exception {

    http.authorizeRequests()
        .anyRequest()
        .authenticated()
        .and()
        .addFilterBefore(new ApiTokenAccessFilter(tokenServices), AbstractPreAuthenticatedProcessingFilter.class);
  }
}

我认为这可能会更容易，所以我在spring-security-oauth Github存储库上打开了一个问题。我不确定该解决方案是否可行，但是我没有找到其他选择。