{"id":206994,"date":"2025-07-08T10:04:03","date_gmt":"2025-07-08T02:04:03","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206994\/"},"modified":"2025-07-08T10:04:03","modified_gmt":"2025-07-08T02:04:03","slug":"%e5%b0%86%e5%b8%a6%e6%9c%89%e7%a0%b4%e6%8a%98%e5%8f%b7%e5%88%86%e9%9a%94%e7%9a%84%e5%8d%95%e8%af%8d%e7%9a%84%e6%a0%87%e5%bf%97%e6%98%a0%e5%b0%84%e5%88%b0camel_case%e9%85%8d%e7%bd%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206994\/","title":{"rendered":"\u5c06\u5e26\u6709\u7834\u6298\u53f7\u5206\u9694\u7684\u5355\u8bcd\u7684\u6807\u5fd7\u6620\u5c04\u5230camel_case\u914d\u7f6e\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>\u5c06\u5e26\u6709\u7834\u6298\u53f7\u5206\u9694\u7684\u5355\u8bcd\u7684\u6807\u5fd7\u6620\u5c04\u5230camel_case\u914d\u7f6e\uff1f<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-19 12:27:39<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5c06\u5e26\u6709\u7834\u6298\u53f7\u5206\u9694\u7684\u5355\u8bcd\u7684\u6807\u5fd7\u6620\u5c04\u5230camel_case\u914d\u7f6e\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">Golang<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u7684\u914d\u7f6e\u683c\u5f0f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>type config struct {\n   foobar string `mapstructure:\"foo_bar\"`\n   bazbot string `mapstructure:\"baz_bot\"`\n}\n<\/pre>\n<p>\u6211\u7684\u57fa\u4e8e cobra \u7684 cli \u5177\u6709\u5e26\u6709\u7834\u6298\u53f7\u7684\u6807\u5fd7\uff08\u4f8b\u5982 <code>--foo-bar=value1 --baz-bot=value2<\/code>\uff09\u3002<\/p>\n<p>\u5f53\u5728 cli \u4e2d\u8bbe\u7f6e\u8fd9\u4e9b\u503c\u4ee5\u8986\u76d6\u914d\u7f6e\u6587\u4ef6\u503c\u65f6\uff0cviper \u4e0d\u77e5\u9053\u5982\u4f55\u5c06\u5b83\u4eec\u6b63\u786e\u6620\u5c04\u5230\u914d\u7f6e\u4e2d\u3002\u8fd9\u91cc\u6709\u4ec0\u4e48\u89e3\u51b3\u529e\u6cd5\u5417\uff1f viper \u914d\u7f6e\u8bbe\u7f6e\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>func loadConfig(cmd *cobra.Command) (*config, error) {\n    res := &amp;config{}\n\n    if err := viper.BindPFlags(cmd.Flags()); err != nil {\n        return nil, err\n    }\n\n    viper.SetEnvPrefix(\"K\")\n    viper.SetEnvKeyReplacer(strings.NewReplacer(\".\", \"_\", \"-\", \"_\"))\n    viper.AutomaticEnv()\n\n    var useConfigFile bool\n\n    if configFile, _ := cmd.Flags().GetString(\"config\"); configFile != \"\" {\n        useConfigFile = true\n        viper.SetConfigFile(configFile)\n    }\n\n    if useConfigFile {\n        if err := viper.ReadInConfig(); err != nil {\n            return nil, err\n        }\n\n        if err := viper.Unmarshal(res); err != nil {\n            return nil, err\n        }\n    }\n\n    return res, nil\n}\n<\/pre>\n<p>\u5982\u679c viper \u65e0\u6cd5\u505a\u5230\u8fd9\u4e00\u70b9\uff0c\u4e5f\u613f\u610f\u63a5\u53d7\u5bf9\u652f\u6301\u6b64\u529f\u80fd\u7684\u5e93\u7684\u5efa\u8bae\u3002<\/p>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u9996\u5148\uff0c\u60a8\u5e94\u8be5\u5b9a\u4e49\u6807\u5fd7\u3002\u6211\u4e0d\u77e5\u9053\uff0c\u6839\u636e\u4f60\u7684\u4f8b\u5b50\uff0c\u4f60\u662f\u5426\u8fd9\u6837\u505a\uff0c\u4f46\u4f60\u5e94\u8be5\u505a\u7c7b\u4f3c\u7684\u4e8b\u60c5\uff08\uff09\uff1a<\/p>\n<pre>cfg := &amp;config{}\n    val := reflect.valueof(cfg).elem()\n    for i := 0; i &lt; val.numfield(); i++ {\n        fieldtype := val.type().field(i)\n        name := fieldtype.tag.get(\"mapstructure\")\n        rootcmd.persistentflags().string(strings.replaceall(name, \"_\", \"-\"), \"default\", \"usage\")\n    }<\/pre>\n<p>\u8fd9\u6837\uff0c<code>--help<\/code> \u547d\u4ee4\u5c06\u5411\u60a8\u663e\u793a\u53ef\u7528\u7684\u6807\u5fd7\uff08<code>--foo-bar<\/code> \u548c <code>--baz-bot<\/code>\uff09\u3002<br \/> \u7136\u540e\u60a8\u5e94\u8be5\u5728 <code>loadconfig<\/code> \u65b9\u6cd5\u4e2d\u7ed1\u5b9a\u6807\u5fd7\uff1a<\/p>\n<pre>cmd.Flags().VisitAll(func(flag *pflag.Flag) {\n        if err := viper.BindPFlag(strings.ReplaceAll(flag.Name, \"-\", \"_\"), flag); err != nil {\n            return\n        }\n    })<\/pre>\n<p>\u8fd9\u5bf9\u6211\u6709\u7528\u3002<\/p>\n<p>\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u5c06\u5e26\u6709\u7834\u6298\u53f7\u5206\u9694\u7684\u5355\u8bcd\u7684\u6807\u5fd7\u6620\u5c04\u5230camel_case\u914d\u7f6e\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u524d\u4f4d\u7f6e\uff1a &gt; &gt; &#46;&#46;&#46;<\/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-206994","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206994","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=206994"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206994\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}