方法一:
db.ResDevices.find({"RegInfo.DeviceID": "d064b09ed28b2e988e4dc83adfb4c1"})
db.ResDevices.find({"RegInfo.DeviceNum": "0100E04C84D9FC"})
db.ResDevices.find({"_id":"1B25DF8578A174632C28340D786A10"})
方法二:
db.getCollection("ResDevices").find({"_id" : "1B255DF8578A328C28340D786A10"})
原文:https://www.cnblogs.com/ymbd/p/13396288.html