\u5f53\u5ba2\u6237\u7aef\u901a\u8fc7 Feign \u8c03\u7528\u4e00\u4e2a\u670d\u52a1\u7aef\u4e0d\u5b58\u5728\u7684\u63a5\u53e3\u65f6，\u4f1a\u629b\u51fa\u5f02\u5e38，\u800c\u4e0d\u4f1a\u5f97\u5230\u6b63\u5e38\u7684\u4e1a\u52a1\u54cd\u5e94\u3002\u5177\u4f53\u8868\u73b0\u4e3a：<\/p>\n
\u5ba2\u6237\u7aef\u4f1a\u6536\u5230\u00a0HTTP 404 Not Found\u00a0\u72b6\u6001\u7801\u3002\u56e0\u4e3a\u670d\u52a1\u7aef\u6839\u672c\u6ca1\u6709\u5339\u914d\u8be5 URL \u548c\u65b9\u6cd5\u7684\u5904\u7406\u5668\u3002<\/p>\n
Feign \u4f1a\u5c06\u8be5 HTTP \u9519\u8bef\u72b6\u6001\u7801\u8f6c\u6362\u4e3a\u00a0FeignException\u00a0\u6216\u5176\u5b50\u7c7b（\u5982\u00a0FeignException$NotFound），\u5e76\u629b\u51fa\u3002<\/p>\n
\u63a7\u5236\u53f0\u5178\u578b\u62a5\u9519\u793a\u4f8b：<\/p>\n
text<\/p>\n
feign.FeignException: [404] during [POST] to [http:\/\/service-a\/vehicle\/dict\/list]
\n[CommonResult<List<Dict>> list(DictDTO$Query)]: [{"timestamp":"…","status":404,"error":"Not Found",…}]<\/p>\n
\u5982\u679c\u8c03\u7528\u65b9\u6ca1\u6709 try-catch，\u5f02\u5e38\u4f1a\u5c42\u5c42\u4e0a\u629b，\u6700\u7ec8\u53ef\u80fd\u5bfc\u81f4：<\/p>\n
\u63a5\u53e3\u8fd4\u56de 500 \u9519\u8bef（\u5982\u679c\u672a\u5168\u5c40\u6355\u83b7）<\/p>\n<\/li>\n
\u524d\u7aef\u6536\u5230\u975e\u9884\u671f\u7684\u9519\u8bef\u4fe1\u606f<\/p>\n<\/li>\n<\/ul>\n
\u5728\u00a0@FeignClient\u00a0\u4e2d\u6307\u5b9a fallback \u6216 fallbackFactory：<\/p>\n
java<\/p>\n
@FeignClient(name = "service-a", fallback = DictClientFallback.class)
\npublic interface DictClient {
\n @PostMapping("\/vehicle\/dict\/list")
\n CommonResult<List<Dict>> list(@RequestBody DictDTO.Query query);
\n}<\/p>\n
@Component
\npublic class DictClientFallback implements DictClient {
\n @Override
\n public CommonResult<List<Dict>> list(DictDTO.Query query) {
\n \/\/ \u8fd4\u56de\u7a7a\u5217\u8868\u6216\u9ed8\u8ba4\u503c，\u6216\u629b\u51fa\u4e1a\u52a1\u5f02\u5e38
\n return CommonResult.success(Collections.emptyList());
\n }
\n}<\/p>\n
\u8fd9\u6837\u5f53\u63a5\u53e3\u4e0d\u5b58\u5728（\u6216\u670d\u52a1\u4e0d\u53ef\u7528）\u65f6，\u4f1a\u6267\u884c fallback \u903b\u8f91，\u907f\u514d\u8c03\u7528\u65b9\u62a5\u9519\u3002<\/p>\n
\u5728\u8c03\u7528\u65b9\u4f7f\u7528\u00a0@ControllerAdvice\u00a0\u6355\u83b7\u00a0FeignException，\u8fd4\u56de\u7edf\u4e00\u683c\u5f0f\u7684\u9519\u8bef\u4fe1\u606f\u7ed9\u524d\u7aef\u3002<\/p>\n
java<\/p>\n
@ControllerAdvice
\npublic class GlobalExceptionHandler {
\n @ExceptionHandler(FeignException.class)
\n public CommonResult<?> handleFeignException(FeignException e) {
\n if (e.status() == 404) {
\n return CommonResult.failed("\u670d\u52a1\u7aef\u63a5\u53e3\u4e0d\u5b58\u5728，\u8bf7\u68c0\u67e5\u8def\u5f84");
\n }
\n return CommonResult.failed("\u8fdc\u7a0b\u8c03\u7528\u5931\u8d25");
\n }
\n}<\/p>\n
\u7531\u4e8e\u65e0\u6cd5\u63d0\u524d\u77e5\u6653\u670d\u52a1\u7aef\u662f\u5426\u6709\u8be5\u63a5\u53e3，\u4e00\u822c\u4e0d\u4f1a\u505a\u524d\u7f6e\u68c0\u67e5，\u800c\u662f\u4f9d\u8d56\u5f02\u5e38\u5904\u7406\u3002<\/p>\n
| \u670d\u52a1\u7aef\u786e\u5b9e\u6ca1\u6709\u8be5\u63a5\u53e3<\/td>\n | \u4e0e\u670d\u52a1\u7aef\u5f00\u53d1\u786e\u8ba4\u63a5\u53e3\u8def\u5f84\u548c\u8bf7\u6c42\u65b9\u6cd5\u662f\u5426\u6b63\u786e<\/td>\n<\/tr>\n |
| \u5ba2\u6237\u7aef Feign \u63a5\u53e3\u8def\u5f84\u5199\u9519<\/td>\n | \u68c0\u67e5\u00a0@PostMapping\u00a0\u7684\u503c\u662f\u5426\u4e0e\u670d\u52a1\u7aef\u00a0@RequestMapping\u00a0\u62fc\u63a5\u6b63\u786e<\/td>\n<\/tr>\n |
| \u8bf7\u6c42\u65b9\u6cd5\u4e0d\u5339\u914d（\u5982\u670d\u52a1\u7aef\u662f GET，\u5ba2\u6237\u7aef\u7528 POST）<\/td>\n | \u5bf9\u9f50\u65b9\u6cd5<\/td>\n<\/tr>\n |
| \u670d\u52a1\u7aef\u8def\u7531\u672a\u6ce8\u518c（\u5982 Spring \u672a\u626b\u63cf\u5230 Controller）<\/td>\n | \u68c0\u67e5\u670d\u52a1\u7aef Controller \u662f\u5426\u5728\u626b\u63cf\u5305\u5185<\/td>\n<\/tr>\n |
| \u670d\u52a1\u7aef\u8fd4\u56de 404 \u4f46\u5b9e\u9645\u6709\u63a5\u53e3（\u5982\u8d1f\u8f7d\u5747\u8861\u8f6c\u53d1\u9519\u8bef）<\/td>\n | \u68c0\u67e5\u7f51\u5173\u6216\u670d\u52a1\u6ce8\u518c\u4e2d\u5fc3\u914d\u7f6e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \n \u516d\u3001\u603b\u7ed3<\/h3>\n\u5ba2\u6237\u7aef\u8c03\u7528\u4e0d\u5b58\u5728\u7684\u63a5\u53e3，\u4f1a\u629b\u51fa\u00a0FeignException（\u72b6\u6001\u7801 404）\u3002\u5efa\u8bae：<\/p>\n \u786e\u4fdd\u63a5\u53e3\u5b9a\u4e49\u6b63\u786e（URL\u3001\u65b9\u6cd5\u3001\u53c2\u6570）<\/p>\n<\/li>\n \u4f7f\u7528 fallback \u5b9e\u73b0\u670d\u52a1\u964d\u7ea7，\u907f\u514d\u8c03\u7528\u65b9\u5d29\u6e83<\/p>\n<\/li>\n \u4f7f\u7528\u5168\u5c40\u5f02\u5e38\u5904\u7406，\u7edf\u4e00\u7ba1\u7406 Feign \u5f02\u5e38\u54cd\u5e94<\/p>\n<\/li>\n \u5728\u5f00\u53d1\u9636\u6bb5，\u53ef\u4ee5\u901a\u8fc7\u65e5\u5fd7\u6216\u8c03\u8bd5\u786e\u8ba4\u8bf7\u6c42\u8def\u5f84\u662f\u5426\u4e0e\u670d\u52a1\u7aef\u4e00\u81f4<\/p>\n<\/li>\n","protected":false},"excerpt":{"rendered":" \u5f53\u5ba2\u6237\u7aef\u901a\u8fc7 Feign \u8c03\u7528\u4e00\u4e2a\u670d\u52a1\u7aef\u4e0d\u5b58\u5728\u7684\u63a5\u53e3\u65f6，\u4f1a\u629b\u51fa\u5f02\u5e38，\u800c\u4e0d\u4f1a\u5f97\u5230\u6b63\u5e38\u7684\u4e1a\u52a1\u54cd\u5e94\u3002\u5177\u4f53\u8868\u73b0\u4e3a：\u4e00\u3001HTTP \u5c42\u9762\u5ba2\u6237\u7aef\u4f1a\u6536\u5230\u00a0HTTP 404 Not Found\u00a0\u72b6\u6001\u7801\u3002\u56e0\u4e3a\u670d\u52a1\u7aef\u6839\u672c\u6ca1\u6709\u5339\u914d\u8be5 URL \u548c\u65b9\u6cd5\u7684\u5904\u7406\u5668\u3002\u4e8c\u3001Feign \u5ba2\u6237\u7aef\u884c\u4e3aFeign \u4f1a\u5c06\u8be5 HTTP \u9519\u8bef\u72b6\u6001\u7801\u8f6c\u6362\u4e3a\u00a0FeignException\u00a0\u6216\u5176\u5b50\u7c7b（\u5982\u00a0FeignException$NotFound）ÿ<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[11726,11725,8001,99],"topic":[],"class_list":["post-102779","post","type-post","status-publish","format-standard","hentry","category-server","tag-fallback","tag-feign","tag-jdk","tag-java"],"yoast_head":"\n |