nodejs操作mongodb简单实例
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内容图文
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 environments
app.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 server
http.createServer(app).listen(app.get(‘port‘), function() {
console.log(‘Express server listening on port ‘ + app.get(‘port‘));
});
//hello world
app.get(‘/hello‘, routes.hello);
//user list
app.get(‘/userlist‘, routes.userlist(db));
//new user
app.get(‘/newuser‘, routes.newuser);
//add user
app.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) { returnfunction(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) { returnfunction(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 layout
block content
h1= title
p Welcome to #{title}
views/hello.jade
extends layout
block content
h1= title
p Welcome to #{title}
views/userlist.jade
extends layout
block content
h1.
User List
ul
each user, i
in
userlist
li
a(href="mailto:#{user.email}")= user.name
views/newuser.jade
extends layout
block 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 html
html
head
title= title
link(rel=‘stylesheet‘, href=‘/stylesheets/style.css‘)
body
block content
软件运行
cd test3
npm install
node app.js
原文：http://www.cnblogs.com/feilv/p/4195448.html
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