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nodejs操作mongodb简单实例
数据库操作
mongo;
use test3;
db.users.insert({"name":"aaa","email":"aaa@123.com"});
nodejs代码编写
新建test3目录，编辑如下文件：
package.json
{ "name": "application-name", "version": "0.0.1", "private": true, "scripts": { "start": "node app.js" }, "dependencies": { "express": "3.4.4", "jade": "*", "mongodb": "*", "monk": "*" }}
app.js
var express = require(‘express‘);var routes = require(‘./routes‘);var user = require(‘./routes/user‘);var http = require(‘http‘);var path = require(‘path‘);var mongo = require(‘mongodb‘);var monk = require(‘monk‘);//var db = monk(‘localhost:27017/test3‘);//var app = express();//all environmentsapp.set(‘port‘, process.env.PORT || 3000);app.set(‘views‘, path.join(__dirname, ‘views‘));app.set(‘view engine‘, ‘jade‘);app.use(express.logger(‘dev‘));app.use(express.bodyParser());app.use(express.methodOverride());app.use(app.router);app.use(express.static(path.join(__dirname, ‘public‘)));//development onlyif (‘development‘ === app.get(‘env‘)) { app.use(express.errorHandler());}//app.get(‘/‘, routes.index);app.get(‘/users‘, user.list);//create serverhttp.createServer(app).listen(app.get(‘port‘), function() { console.log(‘Express server listening on port ‘ + app.get(‘port‘));});//hello worldapp.get(‘/hello‘, routes.hello);//user listapp.get(‘/userlist‘, routes.userlist(db));//new userapp.get(‘/newuser‘, routes.newuser);//add userapp.post(‘/adduser‘, routes.adduser(db));
routes/index.js
exports.index = function(req, res) { res.render(‘index‘, {title: ‘Express‘});}exports.hello = function(req, res) { res.render(‘hello‘, {title: ‘hello, world.‘});}exports.userlist = function(db) { return function(req, res) { var collection = db.get(‘users‘); collection.find({}, {}, function(e, docs) { res.render(‘userlist‘, { ‘userlist‘: docs }); }); };}exports.newuser = function(req, res) { res.render(‘newuser‘, {title: ‘Add New User‘});}exports.adduser = function(db) { return function(req, res) { var username = req.body.username; var useremail = req.body.useremail; var collection = db.get(‘users‘); collection.insert({ "name": username, "email": useremail }, function(err, doc) { if (err) { res.send(‘there was a problem adding the information to the db.‘); } else { res.location(‘userlist‘); res.redirect(‘userlist‘); } }); };}
routes/user.js
exports.list = function(req, res) { res.send(‘respond with a resource‘);}
views/index.jade
extends layoutblock content h1= title p Welcome to #{title}
views/hello.jade
extends layoutblock content h1= title p Welcome to #{title}
views/userlist.jade
extends layoutblock content h1. User List ul each user, i in userlist li a(href="mailto:#{user.email}")= user.name
views/newuser.jade
extends layoutblock content h1= title form#formAddUser(name="adduser",method="post",action="/adduser") input#inputUserName(type="text",placeholder="username",name="username") input#inputUserEmail(type="text",placeholder="useremail",name="useremail") button#btnSubmit(type="submit") submit
views/layout.jade
doctype htmlhtml head title= title link(rel=‘stylesheet‘, href=http://www.mamicode.com/‘/stylesheets/style.css‘) body block content
软件运行
cd test3
npm install
node app.js
nodejs操作mongodb简单实例
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