{"id":207495,"date":"2025-07-08T08:39:44","date_gmt":"2025-07-08T00:39:44","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207495\/"},"modified":"2025-07-08T08:39:44","modified_gmt":"2025-07-08T00:39:44","slug":"go-%e4%b8%ad%e4%b8%8d%e8%83%bd%e4%bd%bf%e7%94%a8%e6%8c%87%e5%90%91%e6%8e%a5%e5%8f%a3%e7%b1%bb%e5%9e%8b%e7%9a%84%e6%8c%87%e9%92%88%e5%90%97%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207495\/","title":{"rendered":"Go \u4e2d\u4e0d\u80fd\u4f7f\u7528\u6307\u5411\u63a5\u53e3\u7c7b\u578b\u7684\u6307\u9488\u5417\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>Go \u4e2d\u4e0d\u80fd\u4f7f\u7528\u6307\u5411\u63a5\u53e3\u7c7b\u578b\u7684\u6307\u9488\u5417\uff1f<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-23 08:24:34<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300aGo \u4e2d\u4e0d\u80fd\u4f7f\u7528\u6307\u5411\u63a5\u53e3\u7c7b\u578b\u7684\u6307\u9488\u5417\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u7528di\u7f16\u5199\u7684\u4ee3\u7801\u5982\u4e0b\u3002\u67092\u4e2a\u4ee3\u7801\u3002\u4e00\u4e2a\u7528\u4e8e <code>use case<\/code>\uff0c\u53e6\u4e00\u4e2a\u662f <code>controller<\/code>\uff0c\u4f9d\u8d56\u4e8e\u8be5 <code>use case<\/code>\u3002<\/p>\n<ul>\n<li>\u7528\u4f8b<\/li>\n<\/ul>\n<pre>package usecase\n\nimport \"fmt\"\n\ntype interface interface {\n    echo() string\n}\n\ntype usecase struct {}\n\nfunc (u *usecase) echo() string {\n    return fmt.sprintf(\"this is usecase!\")\n}\n<\/pre>\n<ul>\n<li>\u63a7\u5236\u5668<\/li>\n<\/ul>\n<pre>package controller\n\nimport (\n    \"my-project\/usecase\"\n)\n\ntype controller struct {\n    usecase *usecase.interface\n}\n\nfunc newcontroller(usecase *usecase.interface) *controller {\n    return &amp;controller{\n        usecase: usecase,\n    }\n}\n\nfunc (s *controller) hello() {\n    result := s.usecase.echo()\n    println(result)\n}\n<\/pre>\n<p>\u4f46\u662f\uff0c\u5728\u63a7\u5236\u5668\u4e2d\u663e\u793a\u4e86\u4ee5\u4e0b\u9519\u8bef\u6d88\u606f\u3002<\/p>\n<p><code>\u672a\u89e3\u6790\u7684\u53c2\u8003\u201cecho\u201d<\/code><\/p>\n<p>\u63a7\u5236\u5668\u7ed3\u6784\u4f53<code>controller<\/code>\u4e2d\u5b57\u6bb5<code>usecase<\/code>\u7684\u7c7b\u578b\u4e3a<code>*usecase.interface<\/code>\u3002 \uff08\u6307\u9488\uff09 \u539f\u56e0\u662f\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684<code>usecase<\/code>\u7684<code>echo()<\/code>\u65b9\u6cd5\u662f\u4e00\u4e2a\u6307\u9488\u63a5\u6536\u8005\u3002<\/p>\n<p>\u6211\u4e0d\u80fd\u50cf\u4e0b\u9762\u8fd9\u6837\u4f7f\u7528\u6307\u5411\u63a5\u53e3\u7684\u6307\u9488\uff1f<\/p>\n<pre>type Controller struct {\n    usecase *usecase.Interface\n}\n<\/pre>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u5c06\u4ee3\u7801\u66f4\u6539\u4e3a\uff1a<\/p>\n<pre>type controller struct {\n    usecase usecase.interface\n}\n\nfunc newcontroller(usecase usecase.interface) *controller {\n    return &amp;controller{\n        usecase: usecase,\n    }\n}\n\nfunc (s *controller) hello() {\n    result := s.usecase.echo()\n    println(result)\n}<\/pre>\n<p>\u51e0\u4e4e\u6ca1\u6709\u4efb\u4f55\u7406\u7531\u4f7f\u7528\u6307\u5411\u63a5\u53e3\u7684\u6307\u9488\u3002\u552f\u4e00\u9700\u8981\u6307\u5411\u63a5\u53e3\u7684\u6307\u9488\u7684\u65f6\u5019\u662f\u9700\u8981\u8bbe\u7f6e\u63a5\u53e3\u503c\uff08\u8be5\u503c\u4f5c\u4e3a\u51fd\u6570\u53c2\u6570\u4f20\u9012\uff09\u65f6\u3002\u5373\uff1a<\/p>\n<pre>var x SomeInterface\nSetX(&amp;x)\n<\/pre>\n<p>\u4eca\u5929\u5173\u4e8e\u300aGo \u4e2d\u4e0d\u80fd\u4f7f\u7528\u6307\u5411\u63a5\u53e3\u7c7b\u578b\u7684\u6307\u9488\u5417\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/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-207495","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207495","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=207495"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207495\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207495"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207495"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207495"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}