{"id":63664,"date":"2024-10-14T01:26:16","date_gmt":"2024-10-13T17:26:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/63664\/"},"modified":"2024-10-14T01:26:16","modified_gmt":"2024-10-13T17:26:16","slug":"mongodb%e8%a1%93%e8%aa%9e-gridfs","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/63664\/","title":{"rendered":"MongoDB\u8853\u8a9e &#8211; GridFS"},"content":{"rendered":"<h1 id=\"mongodb%e8%a1%93%e8%aa%9e-gridfs-OTSzEgVNWA\">MongoDB\u8853\u8a9e &#8211; GridFS<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cMongoDB\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684NoSQL\u6578\u64da\u5eab\uff0c\u56e0\u5176\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\u800c\u53d7\u5230\u5ee3\u6cdb\u4f7f\u7528\u3002MongoDB\u7684\u7279\u6027\u4e4b\u4e00\u662f\u5176\u80fd\u5920\u8655\u7406\u5927\u6587\u4ef6\u7684\u80fd\u529b\uff0c\u9019\u6b63\u662fGridFS\u7684\u7528\u6b66\u4e4b\u5730\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eGridFS\u7684\u6982\u5ff5\u3001\u5de5\u4f5c\u539f\u7406\u53ca\u5176\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afgridfs%ef%bc%9f-OTSzEgVNWA\">\u4ec0\u9ebc\u662fGridFS\uff1f<\/h2>\n<p>GridFS\u662f\u4e00\u7a2eMongoDB\u7684\u6587\u4ef6\u5b58\u5132\u7cfb\u7d71\uff0c\u5c08\u9580\u7528\u65bc\u5b58\u5132\u548c\u6aa2\u7d22\u8d85\u904e16MB\u7684\u6587\u4ef6\u3002\u7531\u65bcMongoDB\u7684\u6587\u6a94\u5927\u5c0f\u9650\u5236\uff0cGridFS\u5c07\u5927\u6587\u4ef6\u5206\u5272\u6210\u591a\u500b\u5c0f\u584a\uff08chunks\uff09\uff0c\u4e26\u5c07\u9019\u4e9b\u5c0f\u584a\u5b58\u5132\u5728\u6578\u64da\u5eab\u4e2d\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4f7f\u5f97MongoDB\u80fd\u5920\u6709\u6548\u5730\u8655\u7406\u5927\u6587\u4ef6\uff0c\u4e26\u4e14\u5728\u9700\u8981\u6642\u80fd\u5920\u5feb\u901f\u6aa2\u7d22\u3002<\/p>\n<h2 id=\"gridfs%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-OTSzEgVNWA\">GridFS\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>GridFS\u7684\u5de5\u4f5c\u539f\u7406\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li><strong>\u6587\u4ef6\u5206\u5272\uff1a<\/strong>\u7576\u4e00\u500b\u6587\u4ef6\u88ab\u4e0a\u50b3\u5230GridFS\u6642\uff0c\u5b83\u6703\u88ab\u5206\u5272\u6210\u591a\u500b\u5c0f\u584a\u3002\u6bcf\u500b\u5c0f\u584a\u7684\u5927\u5c0f\u9ed8\u8a8d\u70ba255KB\uff0c\u4f46\u53ef\u4ee5\u6839\u64da\u9700\u8981\u9032\u884c\u8abf\u6574\u3002<\/li>\n<li><strong>\u5143\u6578\u64da\u5b58\u5132\uff1a<\/strong>\u9664\u4e86\u5c0f\u584a\uff0cGridFS\u9084\u6703\u5b58\u5132\u8207\u6587\u4ef6\u76f8\u95dc\u7684\u5143\u6578\u64da\uff0c\u4f8b\u5982\u6587\u4ef6\u540d\u7a31\u3001\u4e0a\u50b3\u6642\u9593\u548c\u5167\u5bb9\u985e\u578b\u7b49\u3002<\/li>\n<li><strong>\u5c0f\u584a\u5b58\u5132\uff1a<\/strong>\u9019\u4e9b\u5c0f\u584a\u548c\u5143\u6578\u64da\u6703\u88ab\u5b58\u5132\u5728MongoDB\u7684\u5169\u500b\u96c6\u5408\u4e2d\uff1a`fs.chunks`\u548c`fs.files`\u3002<\/li>\n<li><strong>\u6587\u4ef6\u6aa2\u7d22\uff1a<\/strong>\u7576\u9700\u8981\u6aa2\u7d22\u6587\u4ef6\u6642\uff0cGridFS\u6703\u6839\u64da\u5143\u6578\u64da\u627e\u5230\u76f8\u61c9\u7684\u5c0f\u584a\uff0c\u7136\u5f8c\u5c07\u5b83\u5011\u7d44\u5408\u6210\u5b8c\u6574\u7684\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<h2 id=\"gridfs%e7%9a%84%e5%84%aa%e5%8b%a2-OTSzEgVNWA\">GridFS\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528GridFS\u6709\u591a\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u8655\u7406\u5927\u6587\u4ef6\uff1a<\/strong>GridFS\u80fd\u5920\u8f15\u9b06\u8655\u7406\u8d85\u904e16MB\u7684\u6587\u4ef6\uff0c\u9019\u5c0d\u65bc\u9700\u8981\u5b58\u5132\u5927\u6578\u64da\u7684\u61c9\u7528\u7a0b\u5e8f\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002<\/li>\n<li><strong>\u9ad8\u6548\u6aa2\u7d22\uff1a<\/strong>\u7531\u65bc\u6587\u4ef6\u88ab\u5206\u5272\u6210\u5c0f\u584a\uff0cGridFS\u80fd\u5920\u5feb\u901f\u6aa2\u7d22\u548c\u50b3\u8f38\u6587\u4ef6\uff0c\u7279\u5225\u662f\u5728\u7db2\u7d61\u5e36\u5bec\u6709\u9650\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>GridFS\u652f\u6301\u591a\u7a2e\u6587\u4ef6\u985e\u578b\uff0c\u7121\u8ad6\u662f\u5716\u7247\u3001\u8996\u983b\u9084\u662f\u6587\u6a94\uff0c\u90fd\u80fd\u5920\u8f15\u9b06\u5b58\u5132\u548c\u6aa2\u7d22\u3002<\/li>\n<\/ul>\n<h2 id=\"gridfs%e7%9a%84%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-OTSzEgVNWA\">GridFS\u7684\u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Node.js\u548cMongoose\u5eab\u4e0a\u50b3\u6587\u4ef6\u5230GridFS\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nconst mongoose = require('mongoose');\nconst Grid = require('gridfs-stream');\nconst fs = require('fs');\n\nmongoose.connect('mongodb:\/\/localhost:27017\/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true });\n\nconst conn = mongoose.connection;\nlet gfs;\n\nconn.once('open', () =&gt; {\n    gfs = Grid(conn.db, mongoose.mongo);\n});\n\nconst writeStream = gfs.createWriteStream({\n    filename: 'myfile.txt'\n});\n\nfs.createReadStream('path\/to\/myfile.txt').pipe(writeStream);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u9023\u63a5\u5230MongoDB\u6578\u64da\u5eab\uff0c\u7136\u5f8c\u5275\u5efa\u4e00\u500bGridFS\u5beb\u5165\u6d41\uff0c\u5c07\u672c\u5730\u6587\u4ef6\u4e0a\u50b3\u5230GridFS\u4e2d\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-OTSzEgVNWA\">\u7d50\u8ad6<\/h2>\n<p>GridFS\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728MongoDB\u4e2d\u9ad8\u6548\u5730\u5b58\u5132\u548c\u6aa2\u7d22\u5927\u6587\u4ef6\u3002\u7121\u8ad6\u662f\u8655\u7406\u5716\u7247\u3001\u8996\u983b\u9084\u662f\u5176\u4ed6\u985e\u578b\u7684\u6587\u4ef6\uff0cGridFS\u90fd\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9748\u6d3b\u4e14\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u4e86\u89e3\u548c\u638c\u63e1GridFS\u7684\u4f7f\u7528\u5c07\u5c0d\u958b\u767c\u8005\u7684\u5de5\u4f5c\u5927\u6709\u88e8\u76ca\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bcVPS\u3001<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Discover GridFS in MongoDB: a specification for storing and retrieving large files, enabling efficient management of data beyond BSON document size limits.<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-63664","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63664","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=63664"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63664\/revisions"}],"predecessor-version":[{"id":63665,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63664\/revisions\/63665"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=63664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=63664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=63664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}