原教程 https://github.com/nswbmw/N-blog/wiki/_pages的第一章，由于版本等的原因，在原教程基础上稍加改动即可实现。
环境：win7旗舰版64位
Node.js:0.10.31
mongodb:2.6.4
express:3.×
效果：
{
"name": "blog",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node app.js"
},
"dependencies": {
"express": "3.16.7",
"ejs": "*",
"mongodb":"*",
"connect-mongo":"*",
"connect-flash":"*"
}
}
/**
* Module dependencies.
*/
var express = require(&＃39;express&＃39;);
var routes = require(&＃39;./routes&＃39;);
var http = require(&＃39;http&＃39;);
var path = require(&＃39;path&＃39;);
var MOngoStore=require(&＃39;connect-mongo&＃39;)(express);
var settings=require(&＃39;./settings&＃39;);
var flash=require(&＃39;connect-flash&＃39;);
var app = express();
// all environments
app.set(&＃39;port&＃39;, process.env.PORT || 3000);
app.set(&＃39;views&＃39;, path.join(__dirname, &＃39;views&＃39;));
app.set(&＃39;view engine&＃39;, &＃39;ejs&＃39;);
app.use(flash());
app.use(express.favicon());
app.use(express.logger(&＃39;dev&＃39;));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(express.static(path.join(__dirname, &＃39;public&＃39;)));
app.use(express.COOKIEParser());
app.use(express.session({
secret: settings.COOKIESecret,
key: settings.db,//COOKIE name
COOKIE: {maxAge: 1000 * 60 * 60 * 24 * 30},//30 days
store: new MongoStore({
db: settings.db
})
}));
//此句写在session前面就会出错 为啥捏
app.use(app.router);
// development only
if (&＃39;development&＃39; == app.get(&＃39;env&＃39;)) {
app.use(express.errorHandler());
}
routes(app);
http.createServer(app).listen(app.get(&＃39;port&＃39;), function(){
console.log(&＃39;Express server listening on port &＃39; + app.get(&＃39;port&＃39;));
});
module.exports={
COOKIESecret:&＃39;myblog&＃39;,
db:&＃39;blog&＃39;,
host:&＃39;localhost&＃39;
};
var settings=require(&＃39;../settings&＃39;),
Db=require(&＃39;mongodb&＃39;).Db,
COnnection=require(&＃39;mongodb&＃39;).Connection,
Server=require(&＃39;mongodb&＃39;).Server;
module.exports=new Db(settings.db,new Server(settings.host,Connection.DEFAULT_PORT), {safe: true});
var mOngodb= require(&＃39;./db&＃39;);
function Post(name, title, post) {
this.name = name;
this.title = title;
this.post = post;
}
module.exports = Post;
//存储一篇文章及其相关信息
Post.prototype.save = function(callback) {
var date = new Date();
//存储各种时间格式，方便以后扩展
var time = {
date: date,
year : date.getFullYear(),
month : date.getFullYear() + "-" + (date.getMonth() + 1),
day : date.getFullYear() + "-" + (date.getMonth() + 1) + "-" + date.getDate(),
minute : date.getFullYear() + "-" + (date.getMonth() + 1) + "-" + date.getDate() + " " +
date.getHours() + ":" + (date.getMinutes() <10 ? &＃39;0&＃39; + date.getMinutes() : date.getMinutes())
}
//要存入数据库的文档
var post = {
name: this.name,
time: time,
title: this.title,
post: this.post
};
//打开数据库
mongodb.open(function (err, db) {
if (err) {
return callback(err);
}
//读取 posts 集合
db.collection(&＃39;posts&＃39;, function (err, collection) {
if (err) {
mongodb.close();
return callback(err);
}
//将文档插入 posts 集合
collection.insert(post, {
safe: true
}, function (err) {
mongodb.close();
if (err) {
return callback(err);//失败！返回 err
}
callback(null);//返回 err 为 null
});
});
});
};
//读取文章及其相关信息
Post.get = function(name, callback) {
//打开数据库
mongodb.open(function (err, db) {
if (err) {
return callback(err);
}
//读取 posts 集合
db.collection(&＃39;posts&＃39;, function(err, collection) {
if (err) {
mongodb.close();
return callback(err);
}
var query = {};
if (name) {
query.name = name;
}
//根据 query 对象查询文章
collection.find(query).sort({
time: -1
}).toArray(function (err, docs) {
mongodb.close();
if (err) {
return callback(err);//失败！返回 err
}
callback(null, docs);//成功！以数组形式返回查询的结果
});
});
});
};
var mOngodb= require(&＃39;./db&＃39;);
function User(user) {
this.name = user.name;
this.password = user.password;
this.email = user.email;
};
module.exports = User;
//存储用户信息
User.prototype.save = function(callback) {
//要存入数据库的用户文档
var user = {
name: this.name,
password: this.password,
email: this.email
};
//打开数据库
mongodb.open(function (err, db) {
if (err) {
return callback(err);//错误，返回 err 信息
}
//读取 users 集合
db.collection(&＃39;users&＃39;, function (err, collection) {
if (err) {
mongodb.close();
return callback(err);//错误，返回 err 信息
}
//将用户数据插入 users 集合
collection.insert(user, {
safe: true
},
function (err, user) {
mongodb.close();
if (err) {
return callback(err);//错误，返回 err 信息
}
callback(null, user[0]);//成功！err 为 null，并返回存储后的用户文档
});
});
});
};
//读取用户信息
User.get = function(name, callback) {
//打开数据库
mongodb.open(function (err, db) {
if (err) {
return callback(err);//错误，返回 err 信息
}
//读取 users 集合
db.collection(&＃39;users&＃39;, function (err, collection) {
if (err) {
mongodb.close();
return callback(err);//错误，返回 err 信息
}
//查找用户名（name键）值为 name 一个文档
collection.findOne({
name: name
},
function (err, user) {
mongodb.close();
if (err) {
return callback(err);//失败！返回 err 信息
}
callback(null, user);//成功！返回查询的用户信息
});
});
});
};
/* inspired by http://yihui.name/cn/ */
*{padding:0;margin:0;}
body{width:600px;margin:2em auto;padding:0 2em;font-size:14px;font-family:"Microsoft YaHei";}
p{line-height:24px;margin:1em 0;}
header{padding:.5em 0;border-bottom:1px solid #cccccc;}
nav{position:fixed;left:12em;font-family:"Microsoft YaHei";font-size:1.1em;text-transform:uppercase;width:9em;text-align:right;}
nav a{display:block;text-decoration:none;padding:.7em 1em;color:#000000;}
nav a:hover{background-color:#ff0000;color:#f9f9f9;-webkit-transition:color .2s linear;}
article{font-size:16px;padding-top:.5em;}
article a{color:#dd0000;text-decoration:none;}
article a:hover{color:#333333;text-decoration:underline;}
.info{font-size:14px;}
/*
* GET home page.
*/
var crypto = require(&＃39;crypto&＃39;),
User = require(&＃39;../models/user.js&＃39;),
Post=require(&＃39;../models/post.js&＃39;);
module.exports = function(app) {
app.get(&＃39;/&＃39;, function (req, res) {
Post.get(null, function (err, posts) {
if (err) {
posts = [];
}
res.render(&＃39;index&＃39;, {
title: &＃39;主页&＃39;,
user: req.session.user,
posts: posts,
success: req.flash(&＃39;success&＃39;).toString(),
error: req.flash(&＃39;error&＃39;).toString()
});
});
});
app.get(&＃39;/reg&＃39;, checkNotLogin);
app.get(&＃39;/reg&＃39;, function (req, res) {
res.render(&＃39;reg&＃39;, {
title: &＃39;注册&＃39;,
user: req.session.user,
success: req.flash(&＃39;success&＃39;).toString(),
error: req.flash(&＃39;error&＃39;).toString()
});
});
app.post(&＃39;/reg&＃39;, checkNotLogin);
app.post(&＃39;/reg&＃39;, function (req, res) {
var name = req.body.name,
password = req.body.password,
password_re = req.body[&＃39;password-repeat&＃39;];
//检验用户两次输入的密码是否一致
if (password_re != password) {
req.flash(&＃39;error&＃39;, &＃39;两次输入的密码不一致!&＃39;);
return res.redirect(&＃39;/reg&＃39;);//返回注册页
}
//生成密码的 md5 值
var md5 = crypto.createHash(&＃39;md5&＃39;),
password = md5.update(req.body.password).digest(&＃39;hex&＃39;);
var newUser = new User({
name: name,
password: password,
email: req.body.email
});
//检查用户名是否已经存在
User.get(newUser.name, function (err, user) {
if (user) {
req.flash(&＃39;error&＃39;, &＃39;用户已存在!&＃39;);
return res.redirect(&＃39;/reg&＃39;);//返回注册页
}
//如果不存在则新增用户
newUser.save(function (err, user) {
if (err) {
req.flash(&＃39;error&＃39;, err);
return res.redirect(&＃39;/reg&＃39;);//注册失败返回主册页
}
req.session.user = user;//用户信息存入 session
req.flash(&＃39;success&＃39;, &＃39;注册成功!&＃39;);
res.redirect(&＃39;/&＃39;);//注册成功后返回主页
});
});
});
app.get(&＃39;/login&＃39;, checkNotLogin);
app.get(&＃39;/login&＃39;, function (req, res) {
res.render(&＃39;login&＃39;, {
title: &＃39;登录&＃39;,
user: req.session.user,
success: req.flash(&＃39;success&＃39;).toString(),
error: req.flash(&＃39;error&＃39;).toString()});
});
app.post(&＃39;/login&＃39;, checkNotLogin);
app.post(&＃39;/login&＃39;, function (req, res) {
//生成密码的 md5 值
var md5 = crypto.createHash(&＃39;md5&＃39;),
password = md5.update(req.body.password).digest(&＃39;hex&＃39;);
//检查用户是否存在
User.get(req.body.name, function (err, user) {
if (!user) {
req.flash(&＃39;error&＃39;, &＃39;用户不存在!&＃39;);
return res.redirect(&＃39;/login&＃39;);//用户不存在则跳转到登录页
}
//检查密码是否一致
if (user.password != password) {
req.flash(&＃39;error&＃39;, &＃39;密码错误!&＃39;);
return res.redirect(&＃39;/login&＃39;);//密码错误则跳转到登录页
}
//用户名密码都匹配后，将用户信息存入 session
req.session.user = user;
req.flash(&＃39;success&＃39;, &＃39;登陆成功!&＃39;);
res.redirect(&＃39;/&＃39;);//登陆成功后跳转到主页
});
});
app.get(&＃39;/post&＃39;, checkLogin);
app.get(&＃39;/post&＃39;, function (req, res) {
res.render(&＃39;post&＃39;, {
title: &＃39;发表&＃39; ,
user: req.session.user,
success: req.flash(&＃39;success&＃39;).toString(),
error: req.flash(&＃39;error&＃39;).toString()});
console.log("222");
});
app.post(&＃39;/post&＃39;, checkLogin);
app.post(&＃39;/post&＃39;, function (req, res) {
var currentUser = req.session.user,
post = new Post(currentUser.name, req.body.title, req.body.post);
post.save(function (err) {
if (err) {
req.flash(&＃39;error&＃39;, err);
return res.redirect(&＃39;/&＃39;);
}
req.flash(&＃39;success&＃39;, &＃39;发布成功!&＃39;);
res.redirect(&＃39;/&＃39;);//发表成功跳转到主页
});
});
app.get(&＃39;/logout&＃39;, checkLogin);
app.get(&＃39;/logout&＃39;, function (req, res) {
req.session.user = null;
req.flash(&＃39;success&＃39;, &＃39;登出成功!&＃39;);
res.redirect(&＃39;/&＃39;);//登出成功后跳转到主页
});
function checkLogin(req, res, next) {
if (!req.session.user) {
req.flash(&＃39;error&＃39;, &＃39;未登录!&＃39;);
res.redirect(&＃39;/login&＃39;);
}
next();
}
function checkNotLogin(req, res, next) {
if (req.session.user) {
req.flash(&＃39;error&＃39;, &＃39;已登录!&＃39;);
res.redirect(&＃39;back&＃39;);
}
next();
}
};
blog/views/footer.ejs
blog/views/index.ejs
<%- include header %> <% posts.forEach(function (post, index) { %>
blog/views/reg.ejs
<%- include header %> 用户名：
密码：
确认密码：
邮箱：
<%- include footer %>blog/views/login.ejs
<%- include header %> 用户名：
密码：
<%- include footer %>blog/views/post.ejs
<%- include header %> TITLE:
DETAIL:
<%- include footer %>
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