默认异常响应

在使用 Spring Security Oauth2 登录和鉴权失败时，默认返回的异常信息如下：

{  "error": "unauthorized",  "error_description": "Full authentication is required to access this resource"}

这与我们返回的信息格式不一致。如果需要修改这种返回的格式，需要重写相关异常处理类。这里我统一的是资源服务器（网关）的响应格式。

自定义异常响应

无效 token 异常类重写

新增 AuthExceptionEntryPoint.java

@Componentpublic class AuthExceptionEntryPoint implements AuthenticationEntryPoint{    @Override    public void commence(HttpServletRequest request, HttpServletResponse response,                         AuthenticationException authException) throws ServletException {        Map
     
       map = new HashMap
      
       ();        Throwable cause = authException.getCause();        response.setStatus(HttpStatus.OK.value());        response.setHeader("Content-Type", "application/json;charset=UTF-8");        try {            if(cause instanceof InvalidTokenException) {                response.getWriter().write(ResultJsonUtil.build(                        ResponseCodeConstant.REQUEST_FAILED,                        ResponseStatusCodeConstant.OAUTH_TOKEN_FAILURE,                        ResponseMessageConstant.OAUTH_TOKEN_ILLEGAL                ));            }else{                response.getWriter().write(ResultJsonUtil.build(                        ResponseCodeConstant.REQUEST_FAILED,                        ResponseStatusCodeConstant.OAUTH_TOKEN_MISSING,                        ResponseMessageConstant.OAUTH_TOKEN_MISSING                ));            }        } catch (IOException e) {            e.printStackTrace();        }    }}

权限不足异常类重写

新增 CustomAccessDeniedHandler.java

@Component("customAccessDeniedHandler")public class CustomAccessDeniedHandler implements AccessDeniedHandler {    @Override    public void handle(HttpServletRequest request, HttpServletResponse response,                       AccessDeniedException accessDeniedException)            throws IOException, ServletException {        response.setStatus(HttpStatus.OK.value());        response.setHeader("Content-Type", "application/json;charset=UTF-8");        try {            response.getWriter().write(ResultJsonUtil.build(                    ResponseCodeConstant.REQUEST_FAILED,                    ResponseStatusCodeConstant.OAUTH_TOKEN_DENIED,                    ResponseMessageConstant.OAUTH_TOKEN_DENIED            ));        } catch (IOException e) {            e.printStackTrace();        }    }}

资源配置类中设置异常处理类

修改资源配置类 ResourceServerConfiguration.java

@Overridepublic void configure(ResourceServerSecurityConfigurer resources) {    resources.tokenExtractor(customTokenExtractor);    resources.authenticationEntryPoint(authExceptionEntryPoint)            .accessDeniedHandler(customAccessDeniedHandler);}