版本: Spring Cloud 2020.0.3

常見的方法有 實現自己的 DefaultErrorWebExceptionHandler 或 僅實現ErrorAttributes.

自定義一個 GlobalErrorAttributes:

@Componentpublic class GlobalErrorAttributes extends DefaultErrorAttributes{ @Override public Map<String, Object> getErrorAttributes(ServerRequest request, ErrorAttributeOptions options) {Throwable error = super.getError(request);Map<String, Object> map = super.getErrorAttributes(request, options);map.put('status', HttpStatus.BAD_REQUEST.value());map.put('message', error.getMessage());return map; }}

實現一個

@Component@Order(-2)public class GlobalErrorWebExceptionHandler extends AbstractErrorWebExceptionHandler { public GlobalErrorWebExceptionHandler(GlobalErrorAttributes gea, ApplicationContext applicationContext, ServerCodecConfigurer serverCodecConfigurer) {super(gea, new WebProperties.Resources(), applicationContext);super.setMessageWriters(serverCodecConfigurer.getWriters());super.setMessageReaders(serverCodecConfigurer.getReaders()); } //渲染html或json @Override protected RouterFunction<ServerResponse> getRoutingFunction(final ErrorAttributes errorAttributes) {return RouterFunctions.route(RequestPredicates.all(), this::renderErrorResponse); } private Mono<ServerResponse> renderErrorResponse(final ServerRequest request) {final Map<String, Object> errorPropertiesMap = getErrorAttributes(request, ErrorAttributeOptions.defaults());return ServerResponse.status(HttpStatus.BAD_REQUEST).contentType(MediaType.APPLICATION_JSON).body(BodyInserters.fromValue(errorPropertiesMap)); }}方法2, 僅實現一個 ErrorAttributes, 以覆蓋默認的 DefaultErrorAttributes

//Spring 默認的就很好了.@Componentpublic class GatewayErrorAttributes extends DefaultErrorAttributes { private static final Logger logger = LoggerFactory.getLogger(GatewayErrorAttributes.class); @Override public Map<String, Object> getErrorAttributes(ServerRequest request, ErrorAttributeOptions options) {Throwable error = super.getError(request);Map<String, Object> errorAttributes = new HashMap<>(8);errorAttributes.put('message', error.getMessage());errorAttributes.put('method', request.methodName());errorAttributes.put('path', request.path());MergedAnnotation<ResponseStatus> responseStatusAnnotation = MergedAnnotations.from(error.getClass(), MergedAnnotations.SearchStrategy.TYPE_HIERARCHY).get(ResponseStatus.class);HttpStatus errorStatus = determineHttpStatus(error, responseStatusAnnotation);//必須設置, 否則會報錯, 因為 DefaultErrorWebExceptionHandler 的 renderErrorResponse 方法會獲取此屬性, 重新實現 DefaultErrorWebExceptionHandler也可.errorAttributes.put('status', errorStatus.value());errorAttributes.put('code', errorStatus.value());//html view用errorAttributes.put('timestamp', new Date());//html view 用errorAttributes.put('requestId', request.exchange().getRequest().getId());errorAttributes.put('error', errorStatus.getReasonPhrase());errorAttributes.put('exception', error.getClass().getName());return errorAttributes; } //從DefaultErrorWebExceptionHandler中復制過來的 private HttpStatus determineHttpStatus(Throwable error, MergedAnnotation<ResponseStatus> responseStatusAnnotation) {if (error instanceof ResponseStatusException) { return ((ResponseStatusException) error).getStatus();}return responseStatusAnnotation.getValue('code', HttpStatus.class).orElse(HttpStatus.INTERNAL_SERVER_ERROR); } }

這樣就可以了.

注意注意: 必須設置 errorAttributes.put('status', errorStatus.value()) , 否則會報錯, 因為 DefaultErrorWebExceptionHandler 的 renderErrorResponse 方法會獲取此屬性. 除非你自己像方法一一樣重新實現 DefaultErrorWebExceptionHandler.

然后在網關中訪問一個不存在的服務, 即可看到效果.

curl ’http://127.0.0.1:8900/fundmain22/abc/gogogo?id=1000’ --header ’Accept: application/json’{'exception':'org.springframework.web.server.ResponseStatusException','path':'/fundmain22/abc/gogogo','code':404,'method':'GET','requestId':'094e53e5-1','message':'404 NOT_FOUND','error':'Not Found','status':404,'timestamp':'2021-08-09T11:07:44.106+0000'}

感謝網絡上的各種文章...

到此這篇關于Spring Cloud Gateway自定義異常處理Exception Handler的文章就介紹到這了,更多相關Spring Cloud Gateway自定義異常處理內容請搜索好吧啦網以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持好吧啦網！