{"id":207423,"date":"2025-07-08T10:52:59","date_gmt":"2025-07-08T02:52:59","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207423\/"},"modified":"2025-07-08T10:52:59","modified_gmt":"2025-07-08T02:52:59","slug":"%e5%a6%82%e4%bd%95%e5%b0%86primitive-m%e8%bd%ac%e6%8d%a2%e4%b8%ba%e6%98%a0%e5%b0%84%e5%ad%97%e7%ac%a6%e4%b8%b2%ef%bc%8c%e7%84%b6%e5%90%8e%e8%bd%ac%e6%8d%a2%e4%b8%ba%e5%ad%97%e7%ac%a6%e4%b8%b2%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207423\/","title":{"rendered":"\u5982\u4f55\u5c06primitive.M\u8f6c\u6362\u4e3a\u6620\u5c04\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\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>\u5982\u4f55\u5c06primitive.M\u8f6c\u6362\u4e3a\u6620\u5c04\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff1f<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-22 14:57:29<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u5c0f\u4f19\u4f34\u4eec\u5bf9Golang\u7f16\u7a0b\u611f\u5174\u8da3\u5417\uff1f\u662f\u5426\u6b63\u5728\u5b66\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff1f\u5982\u679c\u662f\uff0c\u90a3\u4e48\u672c\u6587\u300a\u5982\u4f55\u5c06primitive.M\u8f6c\u6362\u4e3a\u6620\u5c04\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff1f\u300b\uff0c\u5c31\u5f88\u9002\u5408\u4f60\uff0c\u672c\u7bc7\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\u3002\u5728\u4e4b\u540e\u7684\u6587\u7ae0\u4e2d\u4e5f\u4f1a\u591a\u591a\u5206\u4eab\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u4eec\u5982\u4f55\u5c06\u539f\u59cb m \u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff1f<\/p>\n<pre>package main\n\nimport (\n    \"go.mongodb.org\/mongo-driver\/bson\"\n)\n\nfunc main() {\n    a := bson.m{ \/\/ primitive.m\n        \"test\": bson.m{\n            \"fielda\": \"aaa\",\n            \"fieldb\": \"bbb\",\n        },\n    }\n}\n<\/pre>\n<p>\u6211\u7528\u5b83\u6765\u8bb0\u5f55\u8fdb\u7a0b\u4e2d\u5931\u8d25\u7684 mongodb \u6587\u6863\u3002 \u6211\u80fd\u591f\u4f7f\u7528 <code>logrus.error<\/code> \u6253\u5370\u8be5\u503c\uff0c\u6211\u60f3\u5c06\u6b64\u8f6c\u6362\u590d\u5236\u4e3a\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u5c06\u5176\u8bb0\u5f55\u5230\u6587\u4ef6\u4e2d\u3002<\/p>\n<pre>\/\/ cursor = \"go.mongodb.org\/mongo-driver\/mongo\" *mongo.Cursor\n\/\/ logrus = \"github.com\/sirupsen\/logrus\"\n\/\/...\n        var temp bson.M\n        _ := cursor.Decode(&amp;temp)     \/\/ assume this is not returning error, it will log the map\n        logrus.Error(\"value: \", temp) \/\/ value: map[__v:0 _id:ObjectID(\\\"5c8ef7df7216e9935ecd7859\\\") field1:test]\n<\/pre>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u6700\u7b80\u5355\u7684\u89e3\u51b3\u65b9\u6848\u53ef\u80fd\u662f\u4f7f\u7528 \uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>a := bson.m{\n    \"_id\": primitive.newobjectid(),\n    \"test\": bson.m{\n        \"fielda\": \"aaa\",\n        \"fieldb\": \"bbb\",\n    },\n}\n\ns := fmt.sprint(a)\nfmt.println(s)<\/pre>\n<p>\u8fd9\u5c06\u8f93\u51fa\uff08\u5728 \u4e0a\u5c1d\u8bd5\uff09\uff1a<\/p>\n<pre>map[_id:ObjectID(\"4af9f07018f18fbf63f00366\") test:map[fielda:AAA fieldb:BBB]]<\/pre>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u5c06primitive.M\u8f6c\u6362\u4e3a\u6620\u5c04\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\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-207423","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207423","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=207423"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207423\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207423"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207423"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207423"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}