分类：nodejs

nodejs批处理iconfontsvg文件

2018年3月7日 Mr.try

nodejs批处理iconfontsvg文件生成svg对象文件供三端统一使用 [crayon-5f04c1a1 […]

nodejs实现简单的文件服务器

2018年3月6日 Mr.try

const http = require('http')
const fs = require('fs')
const mime = require('mime')
const url = require('url')
const path = require('path')
const [hostname, port] = ['127.0.0.1', 3000]
const server = http.createServer((req, res)=>{
    let pathname = decodeURIComponent(path.join(__dirname,url.parse(req.url).pathname))
    if(fs.statSync(pathname).isDirectory()){
        res.writeHead(200,{'Content-Type':'text/html;charset=utf-8'})
        fs.readdir(pathname,(err,files)=>{
            res.write('<ul>')
            files.forEach(element => {
                let link = path.join(url.parse(req.url).pathname,element)
                res.write(`<li><a href = "${link}">${element}</a></li>`)
            });
            res.end('<ul>')
        })
    }
    else{
        fs.readFile(pathname, 'binary', (err, data)=>{
            if(err){
                res.writeHead(500,{'Content-Type':'text/plain'})
                res.end(JSON.stringify(err))
                return false
            }
            res.writeHead(200,{'Content-Type':`${mime.lookup(pathname)};charset:utf-8`})
            res.write(data,'binary')
            res.end()
        })
    }
    res.statusCode = 200
})
server.listen(port, hostname,()=>{
    console.log(`服务器运行在 http://${hostname}:${port}`)
})

const http = require('http')

const fs = require('fs')

const mime = require('mime')

const url = require('url')

const path = require('path')

const [hostname, port] = ['127.0.0.1', 3000]

const server = http.createServer((req, res)=>{

let pathname = decodeURIComponent(path.join(__dirname,url.parse(req.url).pathname))

if(fs.statSync(pathname).isDirectory()){

res.writeHead(200,{'Content-Type':'text/html;charset=utf-8'})

fs.readdir(pathname,(err,files)=>{

res.write('<ul>')

files.forEach(element => {

let link = path.join(url.parse(req.url).pathname,element)

res.write(`<li><a href = "${link}">${element}</a></li>`)

});

res.end('<ul>')

})

}

else{

fs.readFile(pathname, 'binary', (err, data)=>{

if(err){

res.writeHead(500,{'Content-Type':'text/plain'})

res.end(JSON.stringify(err))

return false

}

res.writeHead(200,{'Content-Type':`${mime.lookup(pathname)};charset:utf-8`})

res.write(data,'binary')

res.end()

})

}

res.statusCode = 200

})

server.listen(port, hostname,()=>{

console.log(`服务器运行在 http://${hostname}:${port}`)

})

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express集成mysql

2017年3月9日2017年5月23日 Mr.try

npm install mysql --save mysql/connect.js [crayon-5f04c […]

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nodejs使用jwt设置token值

2016年7月19日2016年7月22日 Mr.try

引入相关模块

var expressJwt = require('express-jwt');
var jwt = require('jsonwebtoken');
var SECRET="tangrongyang";

var expressJwt = require('express-jwt');

var jwt = require('jsonwebtoken');

var SECRET="tangrongyang";

登陆验证 [crayon-5f […]

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nodejs使用pass.js验证登陆

2016年7月6日2016年7月11日 Mr.try

app.js


/**
 * Module dependencies.
 */

var express = require('express');
var hash = require('./pass').hash;
var bodyParser = require('body-parser');
var session = require('express-session');

var app = module.exports = express();

// config

app.set('view engine', 'ejs');
app.set('views', __dirname + '/views');
var routes = require('./routes/index');
app.use('/', routes);
// middleware

app.use(bodyParser.urlencoded({ extended: false }));
app.use(session({
  resave: false, // don't save session if unmodified
  saveUninitialized: false, // don't create session until something stored
  secret: 'shhhh, very secret'
}));

// Session-persisted message middleware

app.use(function(req, res, next){
  var err = req.session.error;
  var msg = req.session.success;
  delete req.session.error;
  delete req.session.success;
  res.locals.message = '';
  if (err) res.locals.message = '<p class="msg error">' + err + '</p>';
  if (msg) res.locals.message = '<p class="msg success">' + msg + '</p>';
  next();
});

// dummy database

var users = {
  tj: { name: 'tj' }
};

// when you create a user, generate a salt
// and hash the password ('foobar' is the pass here)

hash('foobar', function(err, salt, hash){
  if (err) throw err;
  // store the salt & hash in the "db"
  users.tj.salt = salt;
  users.tj.hash = hash;
});


// Authenticate using our plain-object database of doom!

function authenticate(name, pass, fn) {
  if (!module.parent) console.log('authenticating %s:%s', name, pass);
  var user = users[name];
  // query the db for the given username
  if (!user) return fn(new Error('cannot find user'));
  // apply the same algorithm to the POSTed password, applying
  // the hash against the pass / salt, if there is a match we
  // found the user
  hash(pass, user.salt, function(err, hash){
    if (err) return fn(err);
    if (hash == user.hash) return fn(null, user);
    fn(new Error('invalid password'));
  });
}

function restrict(req, res, next) {
  if (req.session.user) {
    next();
  } else {
    req.session.error = 'Access denied!';
    res.redirect('/login');
  }
}
/* istanbul ignore next */
if (!module.parent) {
  app.listen(3000);
  console.log('Express started on port 3000');
}

/**

* Module dependencies.

var express = require('express');

var hash = require('./pass').hash;

var bodyParser = require('body-parser');

var session = require('express-session');

var app = module.exports = express();

// config

app.set('view engine', 'ejs');

app.set('views', __dirname + '/views');

var routes = require('./routes/index');

app.use('/', routes);

// middleware

app.use(bodyParser.urlencoded({ extended: false }));

app.use(session({

resave: false, // don't save session if unmodified

saveUninitialized: false, // don't create session until something stored

secret: 'shhhh, very secret'

}));

// Session-persisted message middleware

app.use(function(req, res, next){

var err = req.session.error;

var msg = req.session.success;

delete req.session.error;

delete req.session.success;

res.locals.message = '';

if (err) res.locals.message = '<p class="msg error">' + err + '</p>';

if (msg) res.locals.message = '<p class="msg success">' + msg + '</p>';

next();

});

// dummy database

var users = {

tj: { name: 'tj' }

};

// when you create a user, generate a salt

// and hash the password ('foobar' is the pass here)

hash('foobar', function(err, salt, hash){

if (err) throw err;

// store the salt & hash in the "db"

users.tj.salt = salt;

users.tj.hash = hash;

});

// Authenticate using our plain-object database of doom!

function authenticate(name, pass, fn) {

if (!module.parent) console.log('authenticating %s:%s', name, pass);

var user = users[name];

// query the db for the given username

if (!user) return fn(new Error('cannot find user'));

// apply the same algorithm to the POSTed password, applying

// the hash against the pass / salt, if there is a match we

// found the user

hash(pass, user.salt, function(err, hash){

if (err) return fn(err);

if (hash == user.hash) return fn(null, user);

fn(new Error('invalid password'));

});

}

function restrict(req, res, next) {

if (req.session.user) {

next();

} else {

req.session.error = 'Access denied!';

res.redirect('/login');

}

/* istanbul ignore next */

if (!module.parent) {

app.listen(3000);

console.log('Express started on port 3000');

}

views/login.ejs […]

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在express项目中使用passport

2016年7月2日2016年7月9日 Mr.try

修改app.js

var express = require('express');
var passport = require('passport');
var logger = require('morgan');
var Strategy = require('passport-local').Strategy;
var db = require('./mongodb');
var routes = require('./routes/index');
var users = require('./routes/users');
passport.use(new Strategy(
function(username, password, cb) {
db.users.findByUsername(username, function(err, user) {
if (err) { return cb(err); }
if (!user) { return cb(null, false); }
if (user.password != password) { return cb(null, false); }
return cb(null, user);
});
}));
passport.serializeUser(function(user, cb) {
cb(null, user._id);
});
passport.deserializeUser(function(id, cb) {
db.users.findById(id, function (err, user) {
if (err) { return cb(err); }
cb(null, user);
});
});
var app = express();
app.set('views', __dirname + '/views');
app.set('view engine', 'ejs');
// //引入css、js
app.use(express.static('public'));
app.use(logger('dev'));
app.use(require('cookie-parser')());
app.use(require('body-parser').urlencoded({ extended: true }));
app.use(require('express-session')({ secret: 'keyboard cat', resave: false, saveUninitialized: false }));
app.use(passport.initialize());
app.use(passport.session());
app.use('/', routes);
app.use('/users', users);
module.exports = app;

var express = require('express');

var passport = require('passport');

var logger = require('morgan');

var Strategy = require('passport-local').Strategy;

var db = require('./mongodb');

var routes = require('./routes/index');

var users = require('./routes/users');

passport.use(new Strategy(

function(username, password, cb) {

db.users.findByUsername(username, function(err, user) {

if (err) { return cb(err); }

if (!user) { return cb(null, false); }

if (user.password != password) { return cb(null, false); }

return cb(null, user);

});

}));

passport.serializeUser(function(user, cb) {

cb(null, user._id);

});

passport.deserializeUser(function(id, cb) {

db.users.findById(id, function (err, user) {

if (err) { return cb(err); }

cb(null, user);

});

var app = express();

app.set('views', __dirname + '/views');

app.set('view engine', 'ejs');

// //引入css、js

app.use(express.static('public'));

app.use(logger('dev'));

app.use(require('cookie-parser')());

app.use(require('body-parser').urlencoded({ extended: true }));

app.use(require('express-session')({ secret: 'keyboard cat', resave: false, saveUninitialized: false }));

app.use(passport.initialize());

app.use(passport.session());

app.use('/', routes);

app.use('/users', users);

module.exports = app;

修改路由文件routes/ […]

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