準備
1.通過npm命令安裝mongodb
2.安裝mongodb數據庫，這里不詳細介紹了，安裝網址：//m.survivalescaperooms.com/article/82522.htm
CRUD操作
在此之前應對MongoDB數據庫有所了解，知道它的一些增刪查改命令。
1.增加
var MongoClient = require("mongodb").MongoClient;var DB_URL = "mongodb://localhost:27017/chm";function insertData(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('Error:'+ error); }else{ console.log(result.result.n); } db.close(); });} MongoClient.connect(DB_URL, function(error, db){ console.log('連接成功!'); insertData(db);});2.查找
var mongodb = require('mongodb')var MongoClient = require('mongodb').MongoClient;var DB_CONN_STR = 'mongodb://localhost:27017/chm'; var selectData = function(db, callback) { //連接到表 var collection = db.collection('vip'); //查詢數據 var whereStr = {"name":'node'}; collection.find(whereStr,function(error, cursor){ cursor.each(function(error,doc){ if(doc){ //console.log(doc); if (doc.addTime) { console.log("addTime: "+doc.addTime); } } }); });}MongoClient.connect(DB_CONN_STR, function(err, db) { console.log("連接成功！"); selectData(db, function(result) { console.log(result); db.close(); });});3.更新
var MongoClient = require("mongodb").MongoClient;var DB_URL = "mongodb://localhost:27017/chm";MongoClient.connect(DB_URL, function(error, db){ console.log("連接成功!"); updateData(db);});function updateData(db){ var devices = db.collection('vip'); var whereData = {"name":"node"} var updateDat = {$set: {"age":26}}; //如果不用$set，替換整條數據 devices.update(whereData, updateDat, function(error, result){ if (error) { console.log('Error:'+ error); }else{ console.log(result); } db.close(); });}4.刪除
var MongoClient = require('mongodb').MongoClient;var DB_URL = "mongodb://localhost:27017/chm";MongoClient.connect(DB_URL, function(error, db){ console.log("連接成功"); 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(); })}存儲過程
在mongodb中創建存儲過程
所有存儲過程都存放在db.system.js中，通過db.eval(“存儲過程ID()”);調用存儲過程。
在代碼中調用：
var MongoClient = require("mongodb").MongoClient;var DB_URL = "mongodb://localhost:27017/chm";MongoClient.connect(DB_URL, function(error,db){ console.log("連接成功!"); callProcess(db)});function callProcess(db){ db.eval("get_vip_count()",function(error, result){ if (error) { console.log(error); }else{ console.log("count:"+result); } db.close(); });}以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
新聞熱點
疑難解答
