{"id":205643,"date":"2025-06-12T09:18:12","date_gmt":"2025-06-12T01:18:12","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205643\/"},"modified":"2025-06-12T09:18:12","modified_gmt":"2025-06-12T01:18:12","slug":"%e9%94%99%e8%af%af%e5%a4%84%e7%90%86%e5%92%8c%e9%87%8d%e8%af%95%e9%80%bb%e8%be%91%e5%9c%a8-golang-%e5%87%bd%e6%95%b0%e4%b8%8e%e5%a4%96%e9%83%a8-api-%e4%ba%a4%e4%ba%92%e4%b8%ad%e7%9a%84%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205643\/","title":{"rendered":"\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u5728 Golang \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u7684\u4f5c\u7528"},"content":{"rendered":"

\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u7684\u4f5c\u7528\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~,\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u81f3\u5173\u91cd\u8981\uff1a\u9519\u8bef\u5904\u7406\uff1a\u521b\u5efa\u81ea\u5b9a\u4e49\u9519\u8bef\u7c7b\u578b\uff08errors.New()\uff09\u5339\u914d\u7279\u5b9a\u9519\u8bef\uff08errors.Is()\uff09\u5305\u542b\u539f\u59cb\u9519\u8bef\uff08WrappedErrors \u5e93\uff09\u91cd\u8bd5\u903b\u8f91\uff1a\u5b9e\u73b0\u7b80\u5355\u91cd\u8bd5\uff08time.Sleep()\uff09\u521b\u5efa\u6709\u65f6\u95f4\u9650\u5236\u7684\u91cd\u8bd5\uff08context.WithTimeout()\uff09,
\n,
\n\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\uff1a\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u7684\u4f5c\u7528<\/strong>,\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u65f6\uff0c\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u81f3\u5173\u91cd\u8981\uff0c\u53ef\u4ee5\u786e\u4fdd\u5e94\u7528\u5373\u4f7f\u5728\u9519\u8bef\u60c5\u51b5\u4e0b\u4e5f\u80fd\u6b63\u5e38\u8fd0\u884c\u3002,
\n\u9519\u8bef\u5904\u7406<\/strong>,
\n\u91cd\u8bd5\u903b\u8f91<\/strong>,
\n\u5b9e\u6218\u6848\u4f8b<\/strong>,\u8003\u8651\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u7684\u51fd\u6570
\nFetchUsers()<\/code>, \u8be5\u51fd\u6570\u53ef\u80fd\u4f1a\u56e0\u7f51\u7edc\u95ee\u9898\u6216 API \u8d85\u65f6\u800c\u5931\u8d25\u3002,\u4ee5\u4e0a\u793a\u4f8b\u4e2d\uff0c
\nFetchUsers()<\/code> \u51fd\u6570\u4f7f\u7528\u91cd\u8bd5\u903b\u8f91\u6765\u5904\u7406 HTTP \u8bf7\u6c42\u53ef\u80fd\u7684\u9519\u8bef\uff0c\u5e76\u5728\u8d85\u65f6\u6216 HTTP \u54cd\u5e94\u72b6\u6001\u4ee3\u7801\u65e0\u6548\u65f6\u8fd4\u56de\u9519\u8bef\u3002,\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u7684\u4f5c\u7528\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~GOLANG\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03GOLANG\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01,
\n\u4f7f\u7528 errors.Is()<\/code> \u5339\u914d\u7279\u5b9a\u9519\u8bef\uff1a<\/strong>,
\n\u4f7f\u7528 errors.New()<\/code> \u521b\u5efa\u81ea\u5b9a\u4e49\u9519\u8bef\u7c7b\u578b\uff1a<\/strong>,\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u7684\u4f5c\u7528\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u7684\u4f5c\u7528<\/span><\/p>\n

\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u7684\u4f5c\u7528<\/h1>\n

2024-10-26 17:53:01<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u7684\u4f5c\u7528\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~<\/p>\n

\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u81f3\u5173\u91cd\u8981\uff1a\u9519\u8bef\u5904\u7406\uff1a\u521b\u5efa\u81ea\u5b9a\u4e49\u9519\u8bef\u7c7b\u578b\uff08errors.New()\uff09\u5339\u914d\u7279\u5b9a\u9519\u8bef\uff08errors.Is()\uff09\u5305\u542b\u539f\u59cb\u9519\u8bef\uff08WrappedErrors \u5e93\uff09\u91cd\u8bd5\u903b\u8f91\uff1a\u5b9e\u73b0\u7b80\u5355\u91cd\u8bd5\uff08time.Sleep()\uff09\u521b\u5efa\u6709\u65f6\u95f4\u9650\u5236\u7684\u91cd\u8bd5\uff08context.WithTimeout()\uff09<\/p>\n

<\/p>\n

\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\uff1a\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u7684\u4f5c\u7528<\/strong><\/p>\n

\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u65f6\uff0c\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u81f3\u5173\u91cd\u8981\uff0c\u53ef\u4ee5\u786e\u4fdd\u5e94\u7528\u5373\u4f7f\u5728\u9519\u8bef\u60c5\u51b5\u4e0b\u4e5f\u80fd\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n

\u9519\u8bef\u5904\u7406<\/strong><\/p>\n

    \n
  • \u4f7f\u7528 errors.New()<\/code> \u521b\u5efa\u81ea\u5b9a\u4e49\u9519\u8bef\u7c7b\u578b\uff1a<\/strong><\/li>\n<\/ul>\n
    import \"errors\"\n\nvar ErrNotFound = errors.New(\"not found\")<\/pre>\n
      \n
    • \u4f7f\u7528 errors.Is()<\/code> \u5339\u914d\u7279\u5b9a\u9519\u8bef\uff1a<\/strong><\/li>\n<\/ul>\n
      if errors.Is(err, ErrNotFound) {\n    \/\/ \u5904\u7406\u627e\u4e0d\u5230\u7684\u9519\u8bef\n}<\/pre>\n
        \n
      • \u4f7f\u7528\u5e26 WrappedErrors<\/code> \u7684\u7b2c\u4e09\u65b9\u5e93\uff0c\u5982 github.com\/jmoiron\/sqlx<\/code>\uff0c\u5728\u9519\u8bef\u94fe\u4e2d\u5305\u542b\u539f\u59cb\u9519\u8bef\uff1a<\/strong><\/li>\n<\/ul>\n
        import \"github.com\/jmoiron\/sqlx\"\n\ndb := sqlx.MustOpen(\"mysql\", \"user:password@tcp(localhost:3306)\/database\")\n\nif err := db.Get(nil, \"SELECT * FROM users WHERE id = ?\", 10); err != nil {\n    \/\/ \u5904\u7406\u7531\u57fa\u7840 SQL \u9519\u8bef\u5f15\u8d77\u7684\u9519\u8bef\n}<\/pre>\n
        \u91cd\u8bd5\u903b\u8f91<\/strong><\/p>\n
          \n
        • \u4f7f\u7528 time.Sleep()<\/code> \u51fd\u6570\u5b9e\u73b0\u7b80\u5355\u7684\u91cd\u8bd5\uff1a<\/strong><\/li>\n<\/ul>\n
          for i := 0; i < 3; i++ {\n    if err := callAPI(); err != nil {\n        time.Sleep(100 * time.Millisecond)\n        continue\n    }\n\n    return nil\n}<\/pre>\n
            \n
          • \u4f7f\u7528 context.WithTimeout()<\/code> \u521b\u5efa\u6709\u65f6\u95f4\u9650\u5236\u7684\u91cd\u8bd5\uff1a<\/strong><\/li>\n<\/ul>\n
            ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)\ndefer cancel()\n\nfor {\n    if err := callAPI(ctx); err != nil {\n        select {\n        case <-ctx.Done():\n            return err\n        default:\n            continue\n        }\n    }\n\n    return nil\n}<\/pre>\n
            \u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
            \u8003\u8651\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u7684\u51fd\u6570 FetchUsers()<\/code>, \u8be5\u51fd\u6570\u53ef\u80fd\u4f1a\u56e0\u7f51\u7edc\u95ee\u9898\u6216 API \u8d85\u65f6\u800c\u5931\u8d25\u3002<\/p>\n
            import (\n    \"context\"\n    \"fmt\"\n    \"io\"\n    \"net\/http\"\n    \"time\"\n)\n\nfunc FetchUsers(w io.Writer) error {\n    ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)\n    defer cancel()\n\n    req, err := http.NewRequestWithContext(ctx, http.MethodGet, \"https:\/\/api.example.com\/users\", nil)\n    if err != nil {\n        return fmt.Errorf(\"error creating HTTP request: %w\", err)\n    }\n\n    resp, err := http.DefaultClient.Do(req)\n    if err != nil {\n        return fmt.Errorf(\"error making HTTP request: %w\", err)\n    }\n    defer resp.Body.Close()\n\n    if resp.StatusCode != http.StatusOK {\n        return fmt.Errorf(\"invalid HTTP response status code: %d\", resp.StatusCode)\n    }\n\n    \/\/ \u89e3\u6790 JSON \u54cd\u5e94\u5e76\u8fdb\u884c\u5904\u7406\n    \/\/ ...\n\n    return nil\n}<\/pre>\n
            \u4ee5\u4e0a\u793a\u4f8b\u4e2d\uff0cFetchUsers()<\/code> \u51fd\u6570\u4f7f\u7528\u91cd\u8bd5\u903b\u8f91\u6765\u5904\u7406 HTTP \u8bf7\u6c42\u53ef\u80fd\u7684\u9519\u8bef\uff0c\u5e76\u5728\u8d85\u65f6\u6216 HTTP \u54cd\u5e94\u72b6\u6001\u4ee3\u7801\u65e0\u6548\u65f6\u8fd4\u56de\u9519\u8bef\u3002<\/p>\n
            \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u9519\u8bef\u5904\u7406\u548c\u91cd\u8bd5\u903b\u8f91\u5728 GOLANG \u51fd\u6570\u4e0e\u5916\u90e8 API \u4ea4\u4e92\u4e2d\u7684\u4f5c\u7528\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~GOLANG\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03GOLANG\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n
            \n
            \n <\/dt>\n
            \n   \u5982\u4f55 Java \u4e2d\u4f7f\u7528\u5f02\u5e38\u5904\u7406\u6765\u589e\u5f3a\u5e94\u7528\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\uff1f\n <\/dd>\n<\/dl>\n
            \n
            \n <\/dt>\n
            \n   \u6709\u54ea\u4e9b\u5de5\u5177\u53ef\u4ee5\u5206\u6790 Java \u51fd\u6570\u7684\u6267\u884c\u6548\u7387\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
            \u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-205643","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205643","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=205643"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205643\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}