Nodejs Operation MongoDB Database (MONGODB)

1. Increase

var mongoclient =Require"MongoDB"). Mongoclient;var Db_url ="Mongodb://localhost:27017/chm";functionInsertData(DB) {var devices = Db.collection (' VIP ');var data = { "name":  "node",  "age": 22, "addr":  "NB",  "Addtime": new date ()}; Devices.insert (Data,function ( Error, result) {if (Error) {Console.log (else{Console.log (RESULT.RESULT.N);} db.close ();}); Mongoclient.connect (Db_url, function  ' connected successfully! '); InsertData (db);});    

2. Find

var MongoDB =Require' MongoDB ')var mongoclient =Require' MongoDB '). Mongoclient;var db_conn_str =' Mongodb://localhost:27017/chm ';var selectdata =function(DB, Callback) {Connect to Tablevar collection = Db.collection (' VIP ');Querying datavar wherestr = { "name":  ' node '}; Collection.find (Wherestr, function (error, cursor) { Cursor.each (function (Error, Doc) {if (doc) {//console.log (DOC); if (doc.addtime) {console.log (function (err, db) {Console.log (" Connection succeeded!) "); Selectdata (db, function (Result {Console.log (result); Db.close ();});            

3. Update

var mongoclient =Require"MongoDB"). Mongoclient;var Db_url ="Mongodb://localhost:27017/chm"; Mongoclient.connect (Db_url,function(Error, DB) {Console.log ("Connection succeeded!"); UpdateData (db);});function updatedata(db) { var devices = db.collection (' VIP '); var wheredata = {"name":"Node"} var updatedat = {$set: {"age":26}}; //If not $set, replace the entire data devices.update (Wheredata, Updatedat, function(error, result) { if (error) { Console.log (' ERROR: ' + error);} else{Console.log (result);} db.close ();});            

4. Delete

var mongoclient =Require' MongoDB '). Mongoclient;var Db_url ="Mongodb://localhost:27017/chm"; Mongoclient.connect (Db_url,function(error, DB) {Console.log ("Connection succeeded"); DeleteData (db);}); function deleteData(db) { var devices = db.collection (' VIP '); var data = {"name":"Node"}; devices.remove (data, function(error, result) { if (error) { Console.log (' ERROR: ' + error);} else{Console.log (RESULT.RESULT.N);} db.close ();})}           

Stored Procedures

Create a stored procedure in MongoDB

All stored procedures reside in Db.system.js, through Db.eval ("Stored procedure ID ()"), and call the stored procedure.

Called in the Code:

var mongoclient =Require "MongoDB"). Mongoclient; var db_url =  "Mongodb://localhost:27017/chm"; Mongoclient.connect (Db_url, function  (error,db) {console.log ( "Connection succeeded!"); callprocess (DB)}); function callprocess  (db) {Db. Eval ( "Get_vip_count ()",  Functionif (Error) {Console.log (error);} else{console.log ( "Count:" +result);} Db.close (); });} 

Nodejs Operation MongoDB Database (MongoDB)