{"id":29916,"date":"2023-12-01T04:35:22","date_gmt":"2023-08-04T11:35:46","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%97%a0%e6%b3%95%e5%bc%95%e7%94%a8-env%e6%96%87%e4%bb%b6%e7%9a%84%e5%8f%98%e9%87%8f\/"},"modified":"2025-08-12T16:34:02","modified_gmt":"2025-08-12T08:34:02","slug":"%e6%97%a0%e6%b3%95%e5%bc%95%e7%94%a8-env%e6%96%87%e4%bb%b6%e7%9a%84%e5%8f%98%e9%87%8f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%97%a0%e6%b3%95%e5%bc%95%e7%94%a8-env%e6%96%87%e4%bb%b6%e7%9a%84%e5%8f%98%e9%87%8f\/","title":{"rendered":"\u65e0\u6cd5\u5f15\u7528.env\u6587\u4ef6\u7684\u53d8\u91cf"},"content":{"rendered":"

\u5728\u4e2d\u56fd\uff0c\u9700\u8981\u80cc\u666f\u4fe1\u606f\u3002<\/h2>\n

\u6211\u5728Udemy\u4e0a\u5b66\u4e60\u65f6\uff0c\u53d1\u73b0.env\u5e93\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\uff0c\u6240\u4ee5\u5c06\u5176\u5206\u4eab\u51fa\u6765\u3002<\/p>\n

 <\/p>\n

\u8fd9\u4e2a\u95ee\u9898<\/h2>\n

\u76ee\u5f55\u56fe<\/p>\n

07_MongoDB
\n07_MongoDB\u662f\u4e00\u79cd\u7528\u4e8e\u7ba1\u7406\u975e\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u5f00\u6e90\u6570\u636e\u5e93\u7cfb\u7edf\u3002<\/p>\n

\u251c\u2500\u2500 010_\u8fde\u63a5_\u67e5\u627e\/\u5f00\u59cb\/\u6837\u4f8b.mjs<\/p>\n

\u251c\u2500\u2500 \u8282\u70b9\u6a21\u5757<\/p>\n

. \u67e5\u627e.env\u6587\u4ef6<\/p>\n

\u2514\u2500\u2500 \u5305.json<\/p>\n

import env from 'dotenv';\r\nenv.config();\r\n\/\/ console.log(env.config())\r\nimport { MongoClient } from 'mongodb';\r\nconst client = new MongoClient(process.env.MONGO_URI);\r\n\r\nasync function getCollection() {\r\n    try {\r\n        await client.connect();\r\n        console.log(\"\u63a5\u7d9a\u5b8c\u4e86\")\r\n        const db = client.db('bookshelf');\r\n        return db.collection('books');\r\n    } catch (e) {\r\n        console.log(e)\r\n        await client.close();\r\n    }\r\n}\r\n\r\nasync function getAllBooks() {\r\n    const col = await getCollection();\r\n    const cursor = col.find();\r\n    const result = await cursor.toArray();\r\n    console.log(result);\r\n\r\n    await client.close();\r\n}\r\n\r\ngetAllBooks();\r\n<\/code><\/pre>\n
\u5e94\u8be5\u901a\u8fc7env.config()\u65b9\u6cd5\u4f7f\u5f97\u80fd\u591f\u4f7f\u7528env\u6587\u4ef6\u4e2d\u7684\u53d8\u91cf\uff08process.env.MONGO_URI\uff09\u3002<\/p>\n
\u53d1\u751f\u9519\u8bef\u3002<\/p>\n
\"Untitled.png\"<\/div>\n
\u5f53\u67e5\u770b[Cannot read properties of undefined]\u9519\u8bef\u65f6\uff0c\u53d1\u73b0\u65e0\u6cd5\u8c03\u7528.env\u6587\u4ef6\u4e2d\u7684\u53d8\u91cf\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u9009\u9879\u7684\u4e2d\u6587\u672c\u5730\u5316\u6539\u5199\uff1a<\/p>\n
https:\/\/qiita.com\/whiteraccoon\/items\/34e593dbe305e37ac6e4<\/p>\n
\u8bf7\u6ce8\u610f\uff0c\u6b64\u94fe\u63a5\u4e3a\u4e00\u4e2a\u7f51\u7ad9\u94fe\u63a5\uff0c\u6211\u4eec\u65e0\u6cd5\u5c06\u5176\u6539\u5199\u4e3a\u4e2d\u6587\u3002<\/p>\n
\u6240\u4ee5\uff0c\u4f7f\u7528console.log(env.config())\u8fdb\u884c\u67e5\u8be2\u3002<\/p>\n
\u968f\u540e<\/p>\n
\"Untitled.png\"<\/div>\n
\u636e\u8bf4\u5728 start \u76ee\u5f55\u4e0b\u6ca1\u6709 .env \u6587\u4ef6\u5440<\/p>\n
\u56e0\u4e3a\u5b83\u5c31\u5728 07_mongodb \u6587\u4ef6\u5939\u4e0b\u9762\u561b\u3001\u3001\u3001<\/p>\n
\u9519\u8bef\u7684\u539f\u56e0<\/h3>\n
dotenv\u5e93\u5728\u6267\u884cnode\u547d\u4ee4\u65f6\u4f1a\u5728\u5f53\u524d\u76ee\u5f55\u4e0b\u67e5\u627e.env\u6587\u4ef6\u3002<\/p>\n
\u5982\u679c\u5728\u672c\u6b21\u4e2d\uff0c\u5728start\u76ee\u5f55\u4e0b\u6267\u884cExample.mjs\u6587\u4ef6\u65f6\uff0c\u5b83\u5c06\u5c1d\u8bd5\u67e5\u627estart\u76ee\u5f55\u4e0b\u7684.env\u6587\u4ef6\u3002<\/p>\n
\u6240\u4ee5\uff0c\u5982\u679c\u572807_mongodb\u76ee\u5f55\u4e0b\u6267\u884cnode\u547d\u4ee4\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728\u4e2d\u56fd\uff0c\u9700\u8981\u80cc\u666f\u4fe1\u606f\u3002 \u6211\u5728Udemy\u4e0a\u5b66\u4e60\u65f6\uff0c\u53d1\u73b0.env\u5e93\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\uff0c\u6240\u4ee5\u5c06\u5176\u5206\u4eab\u51fa\u6765\u3002    […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-29916","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n\u65e0\u6cd5\u5f15\u7528.env\u6587\u4ef6\u7684\u53d8\u91cf - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u65e0\u6cd5\u5f15\u7528.env\u6587\u4ef6\u7684\u53d8\u91cf\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u65e0\u6cd5\u5f15\u7528-env\u6587\u4ef6\u7684\u53d8\u91cf\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u65e0\u6cd5\u5f15\u7528.env\u6587\u4ef6\u7684\u53d8\u91cf\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u65e0\u6cd5\u5f15\u7528.env\u6587\u4ef6\u7684\u53d8\u91cf\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u65e0\u6cd5\u5f15\u7528-env\u6587\u4ef6\u7684\u53d8\u91cf\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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