版本: Spring Cloud 2020.0.3
常见的方法有 实现自己的 DefaultErrorWebExceptionHandler 或 仅实现ErrorAttributes.
方法1: ErrorWebExceptionHandler (仅供示意)
自定义一个 GlobalErrorAttributes:
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@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; }} |
实现一个
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@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, 仅实现一个 ErrorAttributes, 以覆盖默认的 DefaultErrorAttributes
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//Spring 默认的就很好了.@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); //必须设置, 否则会报错, 因为 DefaultErrorWebExceptionHandler 的 renderErrorResponse 方法会获取此属性, 重新实现 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; } //从DefaultErrorWebExceptionHandler中复制过来的 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); } } |
这样就可以了.
注意注意: 必须设置 errorAttributes.put("status", errorStatus.value()) , 否则会报错, 因为 DefaultErrorWebExceptionHandler 的 renderErrorResponse 方法会获取此属性. 除非你自己像方法一一样重新实现 DefaultErrorWebExceptionHandler.
然后在网关中访问一个不存在的服务, 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"}
感谢网络上的各种文章...
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原文链接：https://www.cnblogs.com/cnscud/p/15120406.html
