{"id":206632,"date":"2025-06-12T12:54:09","date_gmt":"2025-06-12T04:54:09","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206632\/"},"modified":"2025-06-12T12:54:09","modified_gmt":"2025-06-12T04:54:09","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88-go-%e8%af%ad%e8%a8%80%e4%b8%ad%e5%b0%81%e8%a3%85%e7%9a%84-log-printf-%e6%96%b9%e6%b3%95%e8%be%93%e5%87%ba%e7%bb%93%e6%9e%9c%e4%b8%8d%e7%ac%a6%e5%90%88%e9%a2%84%e6%9c%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206632\/","title":{"rendered":"\u4e3a\u4ec0\u4e48 Go \u8bed\u8a00\u4e2d\u5c01\u88c5\u7684 log.Printf \u65b9\u6cd5\u8f93\u51fa\u7ed3\u679c\u4e0d\u7b26\u5408\u9884\u671f\uff1f"},"content":{"rendered":"<p>\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u4e3a\u4ec0\u4e48 Go \u8bed\u8a00\u4e2d\u5c01\u88c5\u7684 log.Printf \u65b9\u6cd5\u8f93\u51fa\u7ed3\u679c\u4e0d\u7b26\u5408\u9884\u671f\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9&#8230;\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241117\/17318464496739e131ab80e.jpg\" class=\"aligncenter\">,<br \/>\n<strong>go \u8bed\u8a00\u4e2d\u5c01\u88c5 log.printf \u65b9\u6cd5<\/strong>,<br \/>\n<strong>\u95ee\u9898<\/strong>,\u5728 go \u8bed\u8a00\u4e2d\uff0c\u4e3a\u4e86\u63a7\u5236\u65e5\u5fd7\u8f93\u51fa\uff0c\u60a8\u5bf9 log \u5305\u76f8\u5173\u7684\u65b9\u6cd5\u8fdb\u884c\u4e86\u5c01\u88c5\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528\u5c01\u88c5\u7684 log.printf \u65b9\u6cd5\u65f6\uff0c\u8f93\u51fa\u7ed3\u679c\u4e0d\u7b26\u5408\u9884\u671f\u3002,<br \/>\n<strong>\u4ee3\u7801<\/strong>,<br \/>\n<strong>\u8f93\u51fa\u7ed3\u679c<\/strong>,<br \/>\n<strong>\u95ee\u9898\u5206\u6790<\/strong>,\u8f93\u51fa\u7ed3\u679c\u51fa\u73b0\u95ee\u9898\u7684\u539f\u56e0\u662f log.printf \u65b9\u6cd5\u7684\u683c\u5f0f\u5b57\u7b26\u4e32\u548c\u53c2\u6570\u5217\u8868\u4e0d\u5339\u914d\u3002arg \u662f\u4e00\u4e2a &#8230;interface{} \u7c7b\u578b\u53c2\u6570\u5217\u8868\uff0c\u800c log.printf \u65b9\u6cd5\u671f\u671b\u4e00\u4e2a []interface{} \u7c7b\u578b\u53c2\u6570\u5217\u8868\u3002,<br \/>\n<strong>\u89e3\u51b3\u65b9\u6848<\/strong>,\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u9700\u8981\u5c06 arg \u53c2\u6570\u5217\u8868\u663e\u5f0f\u8f6c\u6362\u4e3a []interface{} \u7c7b\u578b\uff0c\u53ef\u4ee5\u4f7f\u7528 &#8230; \u8fd0\u7b97\u7b26\u3002,\u5c06\u4ee3\u7801\u4e2d\u7684,\u4fee\u6539\u4e3a\uff1a,\u4fee\u6539\u540e\uff0c\u8f93\u51fa\u7ed3\u679c\u5c06\u7b26\u5408\u9884\u671f\uff1a,\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u4e3a\u4ec0\u4e48 Go \u8bed\u8a00\u4e2d\u5c01\u88c5\u7684 log.Printf \u65b9\u6cd5\u8f93\u51fa\u7ed3\u679c\u4e0d\u7b26\u5408\u9884\u671f\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u5427\uff01,go \u8bed\u8a00\u4e2d\u5c01\u88c5 log.printf \u65b9\u6cd5,\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u4e3a\u4ec0\u4e48 Go \u8bed\u8a00\u4e2d\u5c01\u88c5\u7684 log.Printf \u65b9\u6cd5\u8f93\u51fa\u7ed3\u679c\u4e0d\u7b26\u5408\u9884\u671f\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9&#8230;\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01,<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>\u4e3a\u4ec0\u4e48 Go \u8bed\u8a00\u4e2d\u5c01\u88c5\u7684 log.Printf \u65b9\u6cd5\u8f93\u51fa\u7ed3\u679c\u4e0d\u7b26\u5408\u9884\u671f\uff1f<\/span><\/p>\n<h1>\u4e3a\u4ec0\u4e48 Go \u8bed\u8a00\u4e2d\u5c01\u88c5\u7684 log.Printf \u65b9\u6cd5\u8f93\u51fa\u7ed3\u679c\u4e0d\u7b26\u5408\u9884\u671f\uff1f<\/h1>\n<p><span>2024-11-17 20:27:45<\/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\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u4e3a\u4ec0\u4e48 Go \u8bed\u8a00\u4e2d\u5c01\u88c5\u7684 log.Printf \u65b9\u6cd5\u8f93\u51fa\u7ed3\u679c\u4e0d\u7b26\u5408\u9884\u671f\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9&#8230;\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241117\/17318464496739e131ab80e.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>go \u8bed\u8a00\u4e2d\u5c01\u88c5 log.printf \u65b9\u6cd5<\/strong><\/p>\n<p><strong>\u95ee\u9898<\/strong><\/p>\n<p>\u5728 go \u8bed\u8a00\u4e2d\uff0c\u4e3a\u4e86\u63a7\u5236\u65e5\u5fd7\u8f93\u51fa\uff0c\u60a8\u5bf9 log \u5305\u76f8\u5173\u7684\u65b9\u6cd5\u8fdb\u884c\u4e86\u5c01\u88c5\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528\u5c01\u88c5\u7684 log.printf \u65b9\u6cd5\u65f6\uff0c\u8f93\u51fa\u7ed3\u679c\u4e0d\u7b26\u5408\u9884\u671f\u3002<\/p>\n<p><strong>\u4ee3\u7801<\/strong><\/p>\n<pre>package main\n\nimport \"log\"\n\nfunc main() {\n    debugf(\"\u6211\u53eb%s,\u4eca\u5e74%d\", \"jim\", 18)\n}\n\nfunc debugf(str string, arg ...interface{}) {\n    if true {\n        log.printf(str+\"\\n\", arg)\n    }\n}<\/pre>\n<p><strong>\u8f93\u51fa\u7ed3\u679c<\/strong><\/p>\n<pre>2021\/12\/17 16:35:16 \u6211\u53eb[jim %!s(int=18)],\u4eca\u5e74%!d(missing)<\/pre>\n<p><strong>\u95ee\u9898\u5206\u6790<\/strong><\/p>\n<p>\u8f93\u51fa\u7ed3\u679c\u51fa\u73b0\u95ee\u9898\u7684\u539f\u56e0\u662f log.printf \u65b9\u6cd5\u7684\u683c\u5f0f\u5b57\u7b26\u4e32\u548c\u53c2\u6570\u5217\u8868\u4e0d\u5339\u914d\u3002arg \u662f\u4e00\u4e2a &#8230;interface{} \u7c7b\u578b\u53c2\u6570\u5217\u8868\uff0c\u800c log.printf \u65b9\u6cd5\u671f\u671b\u4e00\u4e2a []interface{} \u7c7b\u578b\u53c2\u6570\u5217\u8868\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<p>\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u9700\u8981\u5c06 arg \u53c2\u6570\u5217\u8868\u663e\u5f0f\u8f6c\u6362\u4e3a []interface{} \u7c7b\u578b\uff0c\u53ef\u4ee5\u4f7f\u7528 &#8230; \u8fd0\u7b97\u7b26\u3002<\/p>\n<p>\u5c06\u4ee3\u7801\u4e2d\u7684<\/p>\n<pre>log.printf(str+\"\\n\", arg)<\/pre>\n<p>\u4fee\u6539\u4e3a\uff1a<\/p>\n<pre>log.printf(str+\"\\n\", arg...)<\/pre>\n<p>\u4fee\u6539\u540e\uff0c\u8f93\u51fa\u7ed3\u679c\u5c06\u7b26\u5408\u9884\u671f\uff1a<\/p>\n<pre>\u6211\u53ebjim,\u4eca\u5e7418<\/pre>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u4e3a\u4ec0\u4e48 Go \u8bed\u8a00\u4e2d\u5c01\u88c5\u7684 log.Printf \u65b9\u6cd5\u8f93\u51fa\u7ed3\u679c\u4e0d\u7b26\u5408\u9884\u671f\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u5427\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5982\u4f55\u4f7f\u7528\u624b\u673a\u9065\u63a7\u7535\u8111\uff1a\u5b9e\u7528\u6280\u5de7\u4e0e\u6700\u4f73\u5e94\u7528\u63a8\u8350\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5982\u4f55\u4f7f\u7528 CSS \u4e3a\u6587\u672c\u6dfb\u52a0\u6e10\u53d8\u6548\u679c\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9&#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-206632","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206632","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=206632"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206632\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}