Spring-security oauth2返回统一错误

「爱情、让人受尽委屈。」 2022-10-13 02:55 258阅读 0赞

spring oauth2 oauthServer 在client\_id或client\_secret不正确时，返回的信息不是我们需要返回的统一的json格式，spring oauth2返回的信息如下：

{
        "error": "invalid_client",
        "error_description": "Bad client credentials"
    }

因此，我们需要进行自定义返回格式处理。

首先，需要自定义一个CustomClientCredentialsTokenEndpointFilter来继承ClientCredentialsTokenEndpointFilter

public class CustomClientCredentialsTokenEndpointFilter extends ClientCredentialsTokenEndpointFilter {
        private final AuthorizationServerSecurityConfigurer configurer;
        private AuthenticationEntryPoint authenticationEntryPoint;
     
        public CustomClientCredentialsTokenEndpointFilter(AuthorizationServerSecurityConfigurer configurer) {
            this.configurer = configurer;
        }
     
        @Override
        public void setAuthenticationEntryPoint(AuthenticationEntryPoint authenticationEntryPoint) {
            this.authenticationEntryPoint = authenticationEntryPoint;
        }
     
        @Override
        protected AuthenticationManager getAuthenticationManager() {
            return configurer.and().getSharedObject(AuthenticationManager.class);
        }
     
        @Override
        public void afterPropertiesSet() {
            setAuthenticationFailureHandler((request, response, exception) -> authenticationEntryPoint.commence(request, response, exception));
            setAuthenticationSuccessHandler((request, response, authentication) -> {
                // no-op - just allow filter chain to continue to token endpoint
            });
        }
    }

其次，定义CustomAuthenticationEntryPoint

@Component("customAuthenticationEntryPoint")
    public class CustomAuthenticationEntryPoint implements AuthenticationEntryPoint {
        private final ObjectMapper objectMapper = new ObjectMapper();
     
        @Override
        public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException {
            response.setStatus(HttpStatus.OK.value());
            R r = R.error(HttpStatus.UNAUTHORIZED.value(), "client_id或client_secret错误");
            response.setHeader("Content-Type", "application/json;charset=utf-8");
     
            response.getWriter().print(JSON.toJSONString(r));
            response.getWriter().flush();
        }
    }

然后，在public void configure(AuthorizationServerSecurityConfigurer oauthServerSecurity) \{\}里边进行配置

@Override
        public void configure(AuthorizationServerSecurityConfigurer oauthServerSecurity) {
            CustomClientCredentialsTokenEndpointFilter endpointFilter = new CustomClientCredentialsTokenEndpointFilter(oauthServerSecurity);
            endpointFilter.afterPropertiesSet();
            endpointFilter.setAuthenticationEntryPoint(customAuthenticationEntryPoint);
            // 客户端认证之前的过滤器
            oauthServerSecurity.addTokenEndpointAuthenticationFilter(endpointFilter);
        }

至次，配置完成。

**注意：**

此处，在configure中，不再需要配置allowFormAuthenticationForClients()。

allowFormAuthenticationForClients的作用是让/oauth/token支持client\_id以及client\_secret作登录认证，  
oauthServerSecurity.allowFormAuthenticationForClients();即设置allowFormAuthenticationForClients = true;作用是在BasicAuthenticationFilter之前添加ClientCredentialsTokenEndpointFilter，使用ClientDetailUserDeailsService来进行client端登录的验证。

同时，使用allowFormAuthenticationForClients()和我们自定义的CustomClientCredentialsTokenEndpointFilter，会导致oauth2仍然使用allowFormAuthenticationForClients中默认的ClientCredentialsTokenEndpointFilter进行过滤，致使我们的自定义CustomClientCredentialsTokenEndpointFilter不生效。

因此，在使用CustomClientCredentialsTokenEndpointFilter时，不再需要开启allowFormAuthenticationForClients()功能。

自定义前：

![7c3c486ea971970bc26e976589683aef.png][]

自定义后：

![b27ec8395d4b3bd4a9653908e6dca1c0.png][]

[7c3c486ea971970bc26e976589683aef.png]: /images/20221005/2c43af44273547d1b53b5a8fd81dae02.png
[b27ec8395d4b3bd4a9653908e6dca1c0.png]: /images/20221005/5ca0b54dbc704edebae720cf2be2d636.png