use grid
db.fs.files.find(){"_id":ObjectId("5cbd1aab2ee99b20d42fb744"),"chunkSize":NumberInt(261120),"uploadDate":ISODate("2019-04-22T09:36:49.556+08:00"),// 存储时间"length":NumberInt(91222751),// 文件大小"md5":"54ca1997408bbae6814ffe0bb501006a","filename":"C:\\Users\\Administrator\\Desktop\\aaa.pptx"}
查看文件内容:db.fs.chunks.find()
db.fs.chunks.find(){"_id":ObjectId("5cbd1aab2ee99b20d42fb745"),"files_id":ObjectId("5cbd1aab2ee99b20d42fb744"),// fs.files中对应文件的_id"n":NumberInt(0),// 块数"data":BinData(0,"UEsDBAoAAAAAA... more 261096 bytes")// 二进制块,每个块大约32KB},{"_id":ObjectId("5cbd1aab2ee99b20d42fb746"),"files_id":ObjectId("5cbd1aab2ee99b20d42fb744"),"n":NumberInt(1),"data":BinData(0,"hHrztljLZnS3k... more 261096 bytes ")},