\u524d\u56de\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3060\u3063\u305f\u3051\u3069\u3001\u4eca\u56de\u306f\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3002<\/p>\n\n\n\n
\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306e\u5834\u5408\u3001\u30d5\u30a9\u30fc\u30e0\u3092post\u3059\u308b\u306e\u306b\u3001enctype=’multipart\/form-data’\u3068\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304c\u3001node.js\u521d\u5fc3\u8005\u306e\u305f\u3081\u3001\u307e\u305a\u306f\u3053\u3053\u306e\u51e6\u7406\u3067\u3064\u307e\u305a\u3044\u305f\u3002<\/p>\n\n\n\n
ASP.net\u306a\u3093\u304b\u3060\u3068\u3001IFormFile\u306a\u3069\u3067\u3001\u7c21\u5358\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u5207\u308a\u51fa\u305b\u308b\u3051\u3069\u3001node.js\u3067\u306f\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u88fd\u306e\u30d5\u30a3\u30eb\u30bf(?)\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3088\u3046\u3060\u3002\u4e00\u756a\u4e00\u822c\u7684\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u306e\u306fmulter\u3068\u3044\u3046\u3082\u306e\u3089\u3057\u3044\u3002post\u6642\u306b\u3053\u306e\u30d5\u30a3\u30eb\u30bf\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u30d5\u30a1\u30a4\u30eb\u4ee5\u5916\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u5024\u3068\u30d5\u30a1\u30a4\u30eb\u3092\u53d6\u5f97\u3067\u304d\u308b\u3002<\/p>\n\n\n\n
<form method="post" enctype="multipart\/form-data">\n\t\u30bf\u30a4\u30c8\u30eb\uff1a<input type="text" name="title"\/>\n\t\u30d5\u30a1\u30a4\u30eb\uff1a<input type="file" name="upfile"\/>\n\t<input type="submit" value="\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9"\/>\n<\/form><\/code><\/pre><\/div>\n\n\n\nvar router = express.Router();\nvar multer = require('multer');\nvar upload = new multer();\nvar mongo = require('mongodb');\nvar buffer = require('buffer');\n\nrouter.post('\/', upload.any(), async (req,res,next) => {\n\n\t\/\/ field\u3068\u30d5\u30a1\u30a4\u30eb\u3092\u53d6\u5f97\n\tconst { fld , files } = req;\n\n\tvar title = fld['title'];\n\tvar upfile = files[0];\n\n\t\u30fb\u30fb\u30fb<\/code><\/pre><\/div>\n\n\n\n\u3061\u306a\u307f\u306b\u3001upfile(=files[0])\u306e\u5185\u5bb9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u3002<\/p>\n\n\n\n
{\n fieldname: 'upfile',\n originalname: '\u30d5\u30a1\u30a4\u30eb\u540d.\u30bf\u30a4\u30d7',\n encoding: '7bit',\n mimetype: 'image\/png',\n buffer: <Buffer 89 50 4e ... 5926 more bytes>,\n size: 5976\n}<\/code><\/pre><\/div>\n\n\n\n\u3053\u308c\u3092MongoDb\u306eGridFS\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u305f\u3044\u306e\u3060\u304c\u3001\u3084\u306f\u308a\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3068\u540c\u3058\u304f\u3001\u975e\u540c\u671f\u3057\u304b\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\u306e\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u305f\u3002<\/p>\n\n\n\n
\tawait cli.connect();\n\tlet db = cli.db('DBName');\n\tlet fs = new mongo.GridFSBucket(db);\n\tlet stm = fs.openUploadStream(upfile.originalname);\n\tlet fileid = await WriteAsync(stm,upfile.buffer);\n\u30fb\u30fb\u30fb\n\/\/\n\/\/ GridFS\u3078\u306e\u66f8\u304d\u8fbc\u307f(\u540c\u671f\u3063\u307d\u304f\u898b\u3048\u308b\u3088\u3046\u306b\u3057\u3066\u307f\u305f)\n\/\/\nasync function WriteAsync(stm,data) {\n return new Promise((resolve,reject) => {\n try {\n \/\/ end()\u3092\u547c\u3076\u3068finish\u30a4\u30d9\u30f3\u30c8\u304c\u767a\u751f\n stm.on('finish',()=>{\n resolve(stm.id);\n });\n stm.on('error',()=>{\n reject('Write Error');\n });\n var sts = stm.write(data);\n if (!sts) {\n reject('Write Error');\n }\n \/\/ \u3053\u308c\u547c\u3070\u306a\u3044\u3068\u6c38\u9060\u306b\u7d42\u308f\u3089\u306a\u3044\n stm.end();\n } catch (err) {\n reject(err);\n }\n });<\/code><\/pre><\/div>\n\n\n\n\u6c17\u3092\u4ed8\u3051\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u306e\u306f\u3001GridFSBucketWriteStream.end()\u3092\u547c\u3073\u51fa\u3055\u306a\u3044\u3068\u3001\u6c38\u9060\u306b\u5f85\u3061\u72b6\u614b\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3068\u3053\u308d\u3002<\/p>\n\n\n\n
\u8272\u3005\u3068\u8abf\u3079\u305f\u306e\u3060\u304c\u3001\u3042\u307e\u308a\u826f\u3044\u4f8b\u304c\u8f09\u3063\u3066\u3044\u306a\u304f\u3066\u82e6\u52b4\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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