{"id":207422,"date":"2025-07-08T10:57:33","date_gmt":"2025-07-08T02:57:33","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207422\/"},"modified":"2025-07-08T10:57:33","modified_gmt":"2025-07-08T02:57:33","slug":"%e4%bb%8egolang%e4%b8%ad%e7%9a%84mongodb%e6%9f%a5%e8%af%a2%e7%bb%93%e6%9e%9c%e4%b8%ad%e5%88%a0%e9%99%a4%e4%b8%80%e4%b8%aa%e5%ad%97%e6%ae%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207422\/","title":{"rendered":"\u4ecegolang\u4e2d\u7684mongodb\u67e5\u8be2\u7ed3\u679c\u4e2d\u5220\u9664\u4e00\u4e2a\u5b57\u6bb5"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u4ecegolang\u4e2d\u7684mongodb\u67e5\u8be2\u7ed3\u679c\u4e2d\u5220\u9664\u4e00\u4e2a\u5b57\u6bb5<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-22 14:48:33<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u6765\u5230\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60Golang\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300a\u4ecegolang\u4e2d\u7684mongodb\u67e5\u8be2\u7ed3\u679c\u4e2d\u5220\u9664\u4e00\u4e2a\u5b57\u6bb5\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u8fd9\u662f\u6211\u6765\u81ea mongodb-go-driver \u7684\u51fd\u6570\uff1a<\/p>\n

func MongodbFindOne(key, value string) bson.M {\n    var result bson.M\n    opts := options.FindOne().SetShowRecordID(false)\n    _ = Collection.FindOne(context.TODO(), bson.M{key: value}, opts).Decode(&result)\n    return result\n}<\/pre>\n
\u8be5\u51fd\u6570\u5de5\u4f5c\u5f97\u5f88\u597d\uff0c\u4f46\u6211\u5728\u7ed3\u679c\u4e2d\u5f97\u5230\u4e86 _id<\/code> \u5b57\u6bb5\u3002\u6211\u77e5\u9053 mongodb \u67e5\u8be2\u4ece\u67e5\u8be2\u200b\u200b\u7ed3\u679c\u4e2d\u6392\u9664\u5b57\u6bb5\uff0c\u4f46\u6211\u4e0d\u77e5\u9053\u5982\u4f55\u5c06\u5b83\u4e0e findone()<\/code> \u51fd\u6570\u4e00\u8d77\u4f7f\u7528\uff1a<\/p>\n
\u4ece\u6559\u7a0b\u6765\u770b\uff1a<\/p>\n
 db.removeiddemo.find({},{_id:0}); <\/p>\n
\u6765\u81eamongodb\u67e5\u8be2\u7ed3\u679c\uff0c\u4e0d\u5e26\u5b57\u6bb5\u540d<\/p>\n
 db.collection.find({},{_id:0, t_number:1}).toarray().map(function(ele) {return ele.t_number} ); <\/p>\n
\u4ece mongo \u7ed3\u679c\u4e2d\u5220\u9664 _id (nodejs)\uff1a<\/p>\n
 app.get(‘\/itesms’, function(req, res) { items.find({}, { _id: 0 }).toarray(function (err, array) { res.send(\u6570\u7ec4); }) }); <\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u8981\u4ece\u7ed3\u679c\u4e2d\u6392\u9664\u5b57\u6bb5\uff0c\u8bf7\u4f7f\u7528\u6295\u5f71\u3002\u4f7f\u7528\u8bbe\u7f6e\u6295\u5f71\u3002<\/p>\n
\u8981\u4e13\u95e8\u6392\u9664 _id<\/code> \u5b57\u6bb5\uff1a<\/p>\n
err = c.FindOne(ctx,\n    bson.M{key: value},\n    options.FindOne().SetProjection(bson.M{\"_id\": 0}),\n).Decode(&result)<\/pre>\n
\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u4ecegolang\u4e2d\u7684mongodb\u67e5\u8be2\u7ed3\u679c\u4e2d\u5220\u9664\u4e00\u4e2a\u5b57\u6bb5\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-207422","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207422","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=207422"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207422\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}