{"id":206916,"date":"2025-06-12T13:29:06","date_gmt":"2025-06-12T05:29:06","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206916\/"},"modified":"2025-06-12T13:29:06","modified_gmt":"2025-06-12T05:29:06","slug":"go-%e4%b8%ad%e7%9a%84-var-_-handler-handlernil-%e5%86%99%e6%b3%95%e6%9c%89%e4%bb%80%e4%b9%88%e4%bd%9c%e7%94%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206916\/","title":{"rendered":"Go \u4e2d\u7684 `var _ Handler = (*handler)(nil)` \u5199\u6cd5\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f"},"content":{"rendered":"<p>\u7f16\u7a0b\u5e76\u4e0d\u662f\u4e00\u4e2a\u673a\u68b0\u6027\u7684\u5de5\u4f5c\uff0c\u800c\u662f\u9700\u8981\u6709\u601d\u8003\uff0c\u6709\u521b\u65b0\u7684\u5de5\u4f5c\uff0c\u8bed\u6cd5\u662f\u56fa\u5b9a\u7684\uff0c\u4f46\u89e3\u51b3\u95ee\u9898\u7684\u601d\u8def\u5219\u662f\u4f9d\u9760\u4eba\u7684\u601d\u7ef4\uff0c\u8fd9\u5c31\u9700\u8981\u6211\u4eec\u575a\u6301\u5b66\u4e60\u548c\u66f4\u65b0\u81ea\u5df1\u7684\u77e5\u8bc6\u3002\u4eca\u5929GOLANG\u5c31\u6574\u7406\u5206\u4eab\u300aGo \u4e2d\u7684 `var _ Handler = (*handler)(nil)` \u5199\u6cd5\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f\u300b\uff0c\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\uff0c\u5982\u679c\u4f60\u5bf9GOLANG\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7GOLANG\uff0c\u5728\u8fd9\u53ef\u4ee5\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5f00\u53d1\u80fd\u529b\u7684\u63d0\u5347\u3002,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241129\/1732847270674926a69a520.jpg\" class=\"aligncenter\">,<br \/>\n<strong>\u4e00\u4e2a\u5173\u4e8e Go \u53d8\u91cf\u5b9a\u4e49\u5199\u6cd5\u7684\u95ee\u9898<\/strong>,\u5728 Go \u4e2d\uff0c\u60a8\u53ef\u80fd\u4f1a\u770b\u5230\u7c7b\u4f3c\u4e8e var _ Handler = (*handler)(nil) \u8fd9\u6837\u7684\u53d8\u91cf\u5b9a\u4e49\u5199\u6cd5\u3002\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\uff0c\u7406\u89e3\u8fd9\u79cd\u5199\u6cd5\u53ef\u80fd\u4f1a\u6709\u4e9b\u4ee4\u4eba\u56f0\u60d1\u3002,<br \/>\n<strong>\u7406\u89e3\u53d8\u91cf\u5b9a\u4e49<\/strong>,\u8ba9\u6211\u4eec\u5206\u89e3\u8fd9\u4e2a\u53d8\u91cf\u5b9a\u4e49\uff1a,<br \/>\n<strong>\u76ee\u7684<\/strong>,\u8fd9\u79cd\u5199\u6cd5\u7684\u76ee\u7684\u662f\u5b9e\u73b0\u7c7b\u578b\u65ad\u8a00\uff0c\u5373\u68c0\u67e5\u53d8\u91cf\u662f\u5426\u5b9e\u73b0\u4e86\u7279\u5b9a\u7684\u63a5\u53e3\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c_ \u53d8\u91cf\u5b9e\u73b0 Handler \u63a5\u53e3\uff0c\u56e0\u4e3a\u5b83\u6307\u5411\u4e00\u4e2a\u96f6\u503c handler \u7ed3\u6784\u4f53\uff0c\u8be5\u7ed3\u6784\u4f53\u5b9e\u73b0\u4e86 Handler \u63a5\u53e3\u3002,\u56e0\u6b64\uff0c\u6b64\u53d8\u91cf\u5b9a\u4e49\u672c\u8d28\u4e0a\u662f\u5728\u58f0\u660e\u4e00\u4e2a\u53d8\u91cf\uff0c\u8be5\u53d8\u91cf\u58f0\u660e\u4e86\u5176\u7c7b\u578b\u4e3a Handler \u63a5\u53e3\uff0c\u4f46\u5b9e\u9645\u503c\u662f\u4e00\u4e2a handler \u7ed3\u6784\u4f53\u7684\u96f6\u503c\u3002\u8fd9\u5728\u6d4b\u8bd5\u6216\u5728\u9700\u8981\u68c0\u67e5\u53d8\u91cf\u662f\u5426\u5b9e\u73b0\u4e86\u7279\u5b9a\u63a5\u53e3\u7684\u573a\u666f\u4e2d\u5f88\u6709\u7528\u3002,\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301GOLANG\uff01\u66f4\u591a\u5173\u4e8eGOLANG\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u3002,(*handler)(nil)\uff1a\u521b\u5efa\u4e00\u4e2a\u6307\u5411 handler \u7ed3\u6784\u4f53\u7c7b\u578b\u7684\u96f6\u503c\u7684\u6307\u9488\u3002,var _ Handler\uff1a\u58f0\u660e\u4e86\u4e00\u4e2a\u540d\u4e3a _ \u7684\u53d8\u91cf\uff0c\u5176\u7c7b\u578b\u4e3a Handler \u63a5\u53e3\u3002\u4e0b\u5212\u7ebf _ \u53ea\u662f\u4e00\u4e2a\u5360\u4f4d\u7b26\uff0c\u8868\u793a\u6211\u4eec\u4e0d\u611f\u5174\u8da3\u6b64\u53d8\u91cf\u7684\u5b9e\u9645\u503c\u3002,\u4e00\u4e2a\u5173\u4e8e Go \u53d8\u91cf\u5b9a\u4e49\u5199\u6cd5\u7684\u95ee\u9898,\u7f16\u7a0b\u5e76\u4e0d\u662f\u4e00\u4e2a\u673a\u68b0\u6027\u7684\u5de5\u4f5c\uff0c\u800c\u662f\u9700\u8981\u6709\u601d\u8003\uff0c\u6709\u521b\u65b0\u7684\u5de5\u4f5c\uff0c\u8bed\u6cd5\u662f\u56fa\u5b9a\u7684\uff0c\u4f46\u89e3\u51b3\u95ee\u9898\u7684\u601d\u8def\u5219\u662f\u4f9d\u9760\u4eba\u7684\u601d\u7ef4\uff0c\u8fd9\u5c31\u9700\u8981\u6211\u4eec\u575a\u6301\u5b66\u4e60\u548c\u66f4\u65b0\u81ea\u5df1\u7684\u77e5\u8bc6\u3002\u4eca\u5929GOLANG\u5c31\u6574\u7406\u5206\u4eab\u300aGo \u4e2d\u7684 `var _ Handler = (*handler)(nil)` \u5199\u6cd5\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f\u300b\uff0c\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\uff0c\u5982\u679c\u4f60\u5bf9GOLANG\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7GOLANG\uff0c\u5728\u8fd9\u53ef\u4ee5\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5f00\u53d1\u80fd\u529b\u7684\u63d0\u5347\u3002,<br \/>\n<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\u7684 `var _ Handler = (*handler)(nil)` \u5199\u6cd5\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f<\/span><\/p>\n<h1>Go \u4e2d\u7684 `var _ Handler = (*handler)(nil)` \u5199\u6cd5\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f<\/h1>\n<p><span>2024-11-29 10:28:06<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u7f16\u7a0b\u5e76\u4e0d\u662f\u4e00\u4e2a\u673a\u68b0\u6027\u7684\u5de5\u4f5c\uff0c\u800c\u662f\u9700\u8981\u6709\u601d\u8003\uff0c\u6709\u521b\u65b0\u7684\u5de5\u4f5c\uff0c\u8bed\u6cd5\u662f\u56fa\u5b9a\u7684\uff0c\u4f46\u89e3\u51b3\u95ee\u9898\u7684\u601d\u8def\u5219\u662f\u4f9d\u9760\u4eba\u7684\u601d\u7ef4\uff0c\u8fd9\u5c31\u9700\u8981\u6211\u4eec\u575a\u6301\u5b66\u4e60\u548c\u66f4\u65b0\u81ea\u5df1\u7684\u77e5\u8bc6\u3002\u4eca\u5929GOLANG\u5c31\u6574\u7406\u5206\u4eab\u300aGo \u4e2d\u7684 `var _ Handler = (*handler)(nil)` \u5199\u6cd5\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f\u300b\uff0c\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\uff0c\u5982\u679c\u4f60\u5bf9GOLANG\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7GOLANG\uff0c\u5728\u8fd9\u53ef\u4ee5\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5f00\u53d1\u80fd\u529b\u7684\u63d0\u5347\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241129\/1732847270674926a69a520.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4e00\u4e2a\u5173\u4e8e Go \u53d8\u91cf\u5b9a\u4e49\u5199\u6cd5\u7684\u95ee\u9898<\/strong><\/p>\n<p>\u5728 Go \u4e2d\uff0c\u60a8\u53ef\u80fd\u4f1a\u770b\u5230\u7c7b\u4f3c\u4e8e var _ Handler = (*handler)(nil) \u8fd9\u6837\u7684\u53d8\u91cf\u5b9a\u4e49\u5199\u6cd5\u3002\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\uff0c\u7406\u89e3\u8fd9\u79cd\u5199\u6cd5\u53ef\u80fd\u4f1a\u6709\u4e9b\u4ee4\u4eba\u56f0\u60d1\u3002<\/p>\n<p><strong>\u7406\u89e3\u53d8\u91cf\u5b9a\u4e49<\/strong><\/p>\n<p>\u8ba9\u6211\u4eec\u5206\u89e3\u8fd9\u4e2a\u53d8\u91cf\u5b9a\u4e49\uff1a<\/p>\n<ul>\n<li>var _ Handler\uff1a\u58f0\u660e\u4e86\u4e00\u4e2a\u540d\u4e3a _ \u7684\u53d8\u91cf\uff0c\u5176\u7c7b\u578b\u4e3a Handler \u63a5\u53e3\u3002\u4e0b\u5212\u7ebf _ \u53ea\u662f\u4e00\u4e2a\u5360\u4f4d\u7b26\uff0c\u8868\u793a\u6211\u4eec\u4e0d\u611f\u5174\u8da3\u6b64\u53d8\u91cf\u7684\u5b9e\u9645\u503c\u3002<\/li>\n<li>(*handler)(nil)\uff1a\u521b\u5efa\u4e00\u4e2a\u6307\u5411 handler \u7ed3\u6784\u4f53\u7c7b\u578b\u7684\u96f6\u503c\u7684\u6307\u9488\u3002<\/li>\n<\/ul>\n<p><strong>\u76ee\u7684<\/strong><\/p>\n<p>\u8fd9\u79cd\u5199\u6cd5\u7684\u76ee\u7684\u662f\u5b9e\u73b0\u7c7b\u578b\u65ad\u8a00\uff0c\u5373\u68c0\u67e5\u53d8\u91cf\u662f\u5426\u5b9e\u73b0\u4e86\u7279\u5b9a\u7684\u63a5\u53e3\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c_ \u53d8\u91cf\u5b9e\u73b0 Handler \u63a5\u53e3\uff0c\u56e0\u4e3a\u5b83\u6307\u5411\u4e00\u4e2a\u96f6\u503c handler \u7ed3\u6784\u4f53\uff0c\u8be5\u7ed3\u6784\u4f53\u5b9e\u73b0\u4e86 Handler \u63a5\u53e3\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u6b64\u53d8\u91cf\u5b9a\u4e49\u672c\u8d28\u4e0a\u662f\u5728\u58f0\u660e\u4e00\u4e2a\u53d8\u91cf\uff0c\u8be5\u53d8\u91cf\u58f0\u660e\u4e86\u5176\u7c7b\u578b\u4e3a Handler \u63a5\u53e3\uff0c\u4f46\u5b9e\u9645\u503c\u662f\u4e00\u4e2a handler \u7ed3\u6784\u4f53\u7684\u96f6\u503c\u3002\u8fd9\u5728\u6d4b\u8bd5\u6216\u5728\u9700\u8981\u68c0\u67e5\u53d8\u91cf\u662f\u5426\u5b9e\u73b0\u4e86\u7279\u5b9a\u63a5\u53e3\u7684\u573a\u666f\u4e2d\u5f88\u6709\u7528\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301GOLANG\uff01\u66f4\u591a\u5173\u4e8eGOLANG\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u3002<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u63d0\u5347\u6e38\u620f\u4f53\u9a8c\uff1a\u5982\u4f55\u5c06\u8ba1\u7b97\u673a\u4e0eCS\u6e38\u620f\u5b8c\u7f8e\u7ed3\u5408\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u9009\u8d2d\u7535\u8111\u65f6\u5fc5\u77e5\u7684\u6ce8\u610f\u4e8b\u9879\uff1a\u786e\u4fdd\u60a8\u505a\u51fa\u660e\u667a\u9009\u62e9\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u7f16\u7a0b\u5e76\u4e0d\u662f\u4e00\u4e2a\u673a\u68b0\u6027\u7684\u5de5\u4f5c\uff0c\u800c\u662f&#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-206916","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206916","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=206916"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206916\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}