{"id":207593,"date":"2025-07-08T14:20:16","date_gmt":"2025-07-08T06:20:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207593\/"},"modified":"2025-07-08T14:20:16","modified_gmt":"2025-07-08T06:20:16","slug":"golang-%e6%97%a0%e9%9c%80%e7%ad%89%e5%be%85%e5%8d%b3%e5%8f%af%e6%89%a7%e8%a1%8c%e5%bc%82%e6%ad%a5%e4%bb%bb%e5%8a%a1","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207593\/","title":{"rendered":"Golang \u65e0\u9700\u7b49\u5f85\u5373\u53ef\u6267\u884c\u5f02\u6b65\u4efb\u52a1"},"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>Golang \u65e0\u9700\u7b49\u5f85\u5373\u53ef\u6267\u884c\u5f02\u6b65\u4efb\u52a1<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-23 20:30:38<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300aGolang \u65e0\u9700\u7b49\u5f85\u5373\u53ef\u6267\u884c\u5f02\u6b65\u4efb\u52a1\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u4e00\u4e9b\u63cf\u8ff0\u6211\u7684\u95ee\u9898\u7684\u4f2a\u4ee3\u7801\uff1a<\/p>\n<ol>\n<li>\u4ece\u6570\u636e\u5e93 a <code>FoodProduct<\/code> \u4e2d\u83b7\u53d6\u4ea7\u54c1<\/li>\n<li>\u68c0\u67e5\u662f\u5426 isExpired() <code>FoodProduct.DueDate.Before(time.Now())<\/code><\/li>\n<li>\n<p><code>if isExpired()<\/code> \u7136\u540e\u542f\u52a8<strong>\u5f02\u6b65<\/strong>\u4efb\u52a1\u5c06\u6570\u636e\u5e93\u4e2d FoodProduct \u7684\u72b6\u6001\u66f4\u65b0\u4e3a\u8fc7\u671f\uff1a<code>FoodProduct.updateStatus(\"expired\")<\/code><\/p>\n<p>[<code>if isExpired()=false<\/code> \u53ea\u9700\u8df3\u81f3\u6b65\u9aa4 4\u3002]<\/p>\n<\/li>\n<li>\u901a\u8fc7 http \u5c06 <code>FoodProduct<\/code> \u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\uff0c\u800c\u4e0d\u7b49\u5f85\u7b2c 3 \u6b65\u7684\u7b54\u590d<\/li>\n<\/ol>\n<p>\u6211\u77e5\u9053 Go \u6709 goroutine\u3001\u4e92\u65a5\u4f53\u548c\u8bb8\u591a\u5176\u4ed6\u597d\u4e1c\u897f\u3002\u5982\u679c\u6211\u4e0d\u5173\u5fc3\u5f02\u6b65\u64cd\u4f5c\u7684\u7ed3\u679c\uff0c\u6211\u5e94\u8be5\u4f7f\u7528\u4ec0\u4e48\u9009\u9879\uff1f<\/p>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u53ea\u9700\u4f7f\u7528 <code>go<\/code> \u5173\u952e\u5b57\u542f\u52a8\u5f02\u6b65\u4efb\u52a1\u3002\u5b83\u4f1a\u5728\u81ea\u5df1\u7684 goroutine \u4e2d\u5206\u62c6\uff0c\u5e76\u4e14\u60a8\u7684\u4e3b\u6267\u884c\u7ebf\u4e0d\u5fc5\u518d\u5173\u5fc3\u5b83\u3002<\/p>\n<pre>product := fetchProduct()\nif product.isExpired() {\n        go product.updateStatus(\"expired\")\n}\n\/\/ return as normal<\/pre>\n<p>\u8bf7\u6ce8\u610f\uff0c\u7531\u4e8e <code>product.updatestatus<\/code> \u51e0\u4e4e\u80af\u5b9a\u4f1a\u66f4\u6539\u8be5\u4ea7\u54c1\u7684\u72b6\u6001\uff0c\u56e0\u6b64\u5f88\u96be\u9884\u6d4b\u4f55\u65f6\u53ef\u4ee5\u5b89\u5168\u5730\u518d\u6b21\u4f7f\u7528\u8be5\u4ea7\u54c1\uff08\u5373\u5f53\u5b83\u5728\u5e95\u5c42\u6570\u636e\u5e93\u5c42\u4e2d\u66f4\u65b0\u65f6\uff09<\/p>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300aGolang \u65e0\u9700\u7b49\u5f85\u5373\u53ef\u6267\u884c\u5f02\u6b65\u4efb\u52a1\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\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-207593","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207593","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=207593"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207593\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}