Spring Security Oauth - OAuth2Exceptions 的自定义格式

Question

spring security oauth 的错误格式符合 OAuth 规范，看起来像这样。

{
  "error":"insufficient_scope",
  "error_description":"Insufficient scope for this resource",
  "scope":"do.something"
}

特别是在资源服务器上，我发现为身份验证问题获取不同的错误格式有点奇怪。所以我想改变这个异常的呈现方式。

documentation说

Error handling in an Authorization Server uses standard Spring MVC features, namely @ExceptionHandler methods

所以我尝试了这样的事情来自定义错误的格式:

@ControllerAdvice
@Order(Ordered.HIGHEST_PRECEDENCE)
public class MyErrorHandler {

    @ExceptionHandler(value = {InsufficientScopeException.class})
    ResponseEntity<MyErrorRepresentation> handle(RuntimeException ex, HttpServletRequest request) {
        return errorResponse(HttpStatus.FORBIDDEN,
                MyErrorRepresentation.builder()
                        .errorId("insufficient.scope")
                        .build(),
                request);
    }
}

但这不起作用。

看代码，所有的错误渲染似乎都是在 DefaultWebResponseExceptionTranslator#handleOAuth2Exception中完成的.但是实现自定义 WebResponseExceptionTranslator不允许更改格式。

任何提示？

Answer 1

首先，了解一些 Spring Security OAuth2 的知识。

OAuth2 有两个主要部分

AuthorizationServer : /oauth/token, get token

ResourceServer : url resource priviledge management

Spring Security 将过滤器添加到服务器容器的过滤器链中，因此 Spring Security 的异常不会到达@ControllerAdvice

然后，自定义 OAuth2Exceptions 应该考虑 AuthorizationServer 和 ResourceServer。
这是配置

@Configuration
@EnableAuthorizationServer
public class OAuthSecurityConfig extends AuthorizationServerConfigurerAdapter {
    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        //for custom
        endpoints.exceptionTranslator(new MyWebResponseExceptionTranslator());
    }
}

@Configuration
@EnableResourceServer
public  class ResourceServerConfiguration extends ResourceServerConfigurerAdapter {
        @Override
        public void configure(ResourceServerSecurityConfigurer resources) {
            // format message
            resources.authenticationEntryPoint(new MyAuthenticationEntryPoint());
            resources.accessDeniedHandler(new MyAccessDeniedHandler());
        }
}

MyWebResponseExceptionTranslator 将异常转换为 ourOAuthException，我们通过 jackson 自定义 ourOAuthException 序列化程序，默认情况下 OAuth2 使用的方式相同。

@JsonSerialize(using = OAuth2ExceptionJackson1Serializer.class)
public class OAuth2Exception extends RuntimeException {

其他自定义句柄类的东西

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.oauth2.common.exceptions.OAuth2Exception;
import org.springframework.security.oauth2.provider.error.WebResponseExceptionTranslator;

/**
 * @author qianggetaba
 * @date 2019/6/21
 */
public class MyWebResponseExceptionTranslator implements WebResponseExceptionTranslator {
    @Override
    public ResponseEntity<OAuth2Exception> translate(Exception exception) throws Exception {
        if (exception instanceof OAuth2Exception) {
            OAuth2Exception oAuth2Exception = (OAuth2Exception) exception;
            return ResponseEntity
                    .status(oAuth2Exception.getHttpErrorCode())
                    .body(new CustomOauthException(oAuth2Exception.getMessage()));
        }else if(exception instanceof AuthenticationException){
            AuthenticationException authenticationException = (AuthenticationException) exception;
            return ResponseEntity
                    .status(HttpStatus.UNAUTHORIZED)
                    .body(new CustomOauthException(authenticationException.getMessage()));
        }
        return ResponseEntity
                .status(HttpStatus.OK)
                .body(new CustomOauthException(exception.getMessage()));
    }
}

import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import org.springframework.security.oauth2.common.exceptions.OAuth2Exception;

/**
 * @author qianggetaba
 * @date 2019/6/21
 */
@JsonSerialize(using = CustomOauthExceptionSerializer.class)
public class CustomOauthException extends OAuth2Exception {
    public CustomOauthException(String msg) {
        super(msg);
    }
}

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;

import java.io.IOException;
import java.util.Arrays;
import java.util.Map;

/**
 * @author qianggetaba
 * @date 2019/6/21
 */
public class CustomOauthExceptionSerializer extends StdSerializer<CustomOauthException> {

    public CustomOauthExceptionSerializer() {
        super(CustomOauthException.class);
    }

    @Override
    public void serialize(CustomOauthException value, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
        jsonGenerator.writeStartObject();
        jsonGenerator.writeNumberField("code4444", value.getHttpErrorCode());
        jsonGenerator.writeBooleanField("status", false);
        jsonGenerator.writeObjectField("data", null);
        jsonGenerator.writeObjectField("errors", Arrays.asList(value.getOAuth2ErrorCode(),value.getMessage()));
        if (value.getAdditionalInformation()!=null) {
            for (Map.Entry<String, String> entry : value.getAdditionalInformation().entrySet()) {
                String key = entry.getKey();
                String add = entry.getValue();
                jsonGenerator.writeStringField(key, add);
            }
        }
        jsonGenerator.writeEndObject();
    }
}

用于自定义 ResourceServer 异常

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * @author qianggetaba
 * @date 2019/6/21
 */
public class MyAuthenticationEntryPoint implements AuthenticationEntryPoint {
    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response,
                         AuthenticationException authException)
            throws ServletException {

        Map map = new HashMap();
        map.put("errorentry", "401");
        map.put("message", authException.getMessage());
        map.put("path", request.getServletPath());
        map.put("timestamp", String.valueOf(new Date().getTime()));
        response.setContentType("application/json");
        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        try {
            ObjectMapper mapper = new ObjectMapper();
            mapper.writeValue(response.getOutputStream(), map);
        } catch (Exception e) {
            throw new ServletException();
        }
    }

}

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandler;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * @author qianggetaba
 * @date 2019/6/21
 */
public class MyAccessDeniedHandler implements AccessDeniedHandler{
    @Override
    public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException accessDeniedException) throws IOException, ServletException {
        response.setContentType("application/json;charset=UTF-8");
        Map map = new HashMap();
        map.put("errorauth", "400");
        map.put("message", accessDeniedException.getMessage());
        map.put("path", request.getServletPath());
        map.put("timestamp", String.valueOf(new Date().getTime()));
        response.setContentType("application/json");
        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        try {
            ObjectMapper mapper = new ObjectMapper();
            mapper.writeValue(response.getOutputStream(), map);
        } catch (Exception e) {
            throw new ServletException();
        }
    }
}