# MongoDB 數據插入 ## 描述 本章節中我們將向大家介紹如何將數據插入到MongoDB的集合中。 文檔的數據結構和JSON基本一樣。 所有存儲在集合中的數據都是BSON格式。 BSON是一種類json的一種二進制形式的存儲格式,簡稱Binary JSON 。 ## MongoDB數據庫切換 以下命令可以使用"myinfo"數據庫： ``` use myinfo switch to db myinfo ```  ## 為MongoDB數據庫定義一個文檔 以下文檔可以存儲在MongoDB中： ``` document=({"user_id" : "ABCDBWN","password" :"ABCDBWN" ,"date_of_join" : "15/10/2010" ,"education" :"B.C.A." , "profession" : "DEVELOPER","interest" : "MUSIC","community_name" :["MODERN MUSIC", "CLASSICAL MUSIC","WESTERN MUSIC"],"community_moder_id" : ["MR. BBB","MR. JJJ","MR MMM"],"community_members" : [500,200,1500],"friends_id" : ["MMM123","NNN123","OOO123"],"ban_friends_id" : ["BAN123","BAN456","BAN789"]}); ``` 命令執行如下圖所示：  ## 顯示已定義的文檔 已定義的文檔顯示格式如下所示：  ## 在集合中插入文檔 將以上的文檔數據存儲到"myinfo" 數據庫中的 "userdetails" 集合，執行如下命令： ``` db.userdetails.insert(document) ```  ## 使用換行符插入數據 當文檔的數據較多的時候，我們可以使用換行符來分割文檔數據，如下所示： ``` document=({"user_id" : "ABCDBWN","password" :"ABCDBWN" ,"date_of_join" : "15/10/2010" , "education" :"B.C.A." , "profession" : "DEVELOPER","interest" : "MUSIC", "community_name" :["MODERN MUSIC", "CLASSICAL MUSIC","WESTERN MUSIC"], "community_moder_id" : ["MR. BBB","MR. JJJ","MR MMM"], "community_members" : [500,200,1500],"friends_id" : ["MMM123","NNN123","OOO123"], "ban_friends_id" :["BAN123","BAN456","BAN789"]}); ``` 命令執行如下圖所示：  ## 集合中直接插入數據（無定義文檔） 數據可以不用定義文檔通過shell直接插入： ``` db.userdetails.insert({"user_id" : "xyz123","password" :"xyz123" ,"date_of_join" : "15/08/2010" , "education" :"M.C.A." , "profession" : "Software consultant","interest" : "Film", "community" : [ { "name" : "DDD FILM CLUB", "moder_id" : "MR. DBNA", "members" : "25000", }, { "name" : "AXN MOVIES", "moder_id" : "DOGLUS HUNT", "members" : "15000", }, { "name" : "UROPEAN FILM LOVERS", "moder_id" : "AMANT LUIS", "members" : "20000", } ], "friends" :[ { "user_id" : "KKK258", }, { "user_id" : "LLL147", }, { "user_id" : "MMM369", } ], "ban_friends" :[ { "user_id" : "BAN147" }, { "user_id" : "BAN258" }, { "user_id" : "BAN369" } ] }); ``` 命令執行如下圖所示：  ## 查看集合中的數據 使用以下命令查看集合中的數據： ``` db.userdetails.find(); ```