java - 捕获 AuthenticationProvider 中抛出的异常

Question

我正在实现自定义“AuthenticationProvider”。如果未通过身份验证，我将在“身份验证”函数中抛出异常，如下所示。

public class DelegatingLdapAuthenticationProvider implements AuthenticationProvider {

    private ActiveDirectoryLdapAuthenticationProvider primaryProvider;
    private List<ActiveDirectoryLdapAuthenticationProvider> secondaryProviders = new ArrayList<>();

    public DelegatingLdapAuthenticationProvider() {

    }

    @Override
    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
        Authentication result = null;
        AuthenticationException exception = null;
        try {
            result = primaryProvider.authenticate(authentication);
        } catch (AuthenticationException e) {
            exception = e;
            for (ActiveDirectoryLdapAuthenticationProvider secondaryProvider : secondaryProviders) {
                try {
                    result = secondaryProvider.authenticate(authentication);
                    if (result.isAuthenticated()) {
                            break;
                    }
                } catch (AuthenticationException e1) {
                            exception = e;
                }
            }
        }
        if (result == null || !result.isAuthenticated()) {
            throw exception;
    }

    return result;
}

我有如下所示的全局异常处理程序。

@ControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler({NoPermissionException.class})
    @ResponseBody
    @ResponseStatus(value = HttpStatus.FORBIDDEN)
    public Map<String, String> noPermission(NoPermissionException e) {
        return createErrorResponse(e, "Don't have permissions");
    }

    @ExceptionHandler({Exception.class})
    @ResponseBody
    @ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR)
    public Map<String, String> exceptionInProcessing(Exception e) {
        return createErrorResponse(e, "Unable to process. Unknown error occurred: " + e.getMessage());
    }

    private Map<String, String> createErrorResponse(Exception e, String errorMessage) {
        Map<String, String> errorResponse = new HashMap<>();
        errorResponse.put("message", errorMessage);
        errorResponse.put("reason", e.toString());
        return errorResponse;
    }
}

当在“authenticate”函数中抛出异常时，不会调用全局异常处理程序。对于所有其他异常，它被调用。我想在全局异常处理程序中捕获异常并返回自定义错误消息。我怎样才能做到这一点？任何帮助表示赞赏。提前致谢。

Answer 1

GlobalExceptionHandler是controller的异常处理，但是AuthenticationProvider还在filter中，如果你想处理AuthenticationException，你需要处理它以实现 AuthenticationEntryPoint 并覆盖 commence 方法。

public void commence(HttpServletRequest request, HttpServletResponse response,
        AuthenticationException authException) throws IOException, ServletException

AuthenticationException 和 AccessDeniedException 已由 ExceptionTranslationFilter 处理。您只需要注入(inject) AuthenticationEntryPoint 和 AccessDeniedHandler(处理 AccessDeniedException)

或者你可以在过滤器中捕获这些异常，然后在文件管理器中处理它，比如 AbstractAuthenticationProcessingFilter 中的 AuthenticationFailureHandler