我在使用app.use(express.static(path.join(__dirname,'public')));
显示登录页面之前在Node.js中显示index.html。
然而,它并没有在index.html之前显示登录页面...
我尝试使用app.get('/', function (req,res) {res.redirect('/login');});
但它甚至没有通过app.get
并且在连接到localhost时没有重定向:4000 ...
我的目录设置如下所示
myapp
node_modules
public
images
javascripts
js
stylesheets
index.html
routes
views
login
login.ejs
users
new.ejs
index.jade
layout.jade
app.js
package.json
另外,我想在公共文件夹中保存index.html,只想在此之前显示登录页面。 有没有办法证明这个?
以下是app.js中的完整代码
var io = require('socket.io');
var express = require('express');
var app = express();
var redis = require('redis');
var sys = require('util');
var fs = require('fs');
//Added for connecting login session
var http = require('http');
var server = http.createServer(app);
var path = require('path');
var mongoose = require('mongoose');
var passport = require('passport');
var session = require('express-session');
var flash = require('connect-flash');
var async = require('async');
var bodyParser = require('body-parser');
var methodOverride = require('method-override');
//connecting database
mongoose.connect("my mongoDB private address");
var db = mongoose.connection;
db.once("open",function () {
console.log("DB connected!");
});
db.on("error",function (err) {
console.log("DB ERROR :", err);
});
var bcrypt = require("bcrypt-nodejs");
var userSchema = mongoose.Schema({
email: {type:String, required:true, unique:true},
password: {type:String, required:true},
createdAt: {type:Date, default:Date.now}
});
userSchema.pre("save", function (next){
var user = this;
if(!user.isModified("password")){
return next();
} else {
user.password = bcrypt.hashSync(user.password);
return next();
}
});
userSchema.methods.authenticate = function (password) {
var user = this;
return bcrypt.compareSync(password,user.password);
};
var User = mongoose.model('user',userSchema);
io = io.listen(server);
app.set("view engine", 'ejs');
app.use(express.static(path.join(__dirname, 'public')));
//setting middleware for login
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended:true}));
app.use(methodOverride("_method"));
app.use(flash());
app.use(session({secret:'MySecret', resave: true, saveUninitialized: true}));
app.use(passport.initialize());
app.use(passport.session());
passport.serializeUser(function(user, done) {
done(null, user.id);
});
passport.deserializeUser(function(id, done) {
User.findById(id, function(err, user) {
done(err, user);
});
});
var LocalStrategy = require('passport-local').Strategy;
passport.use('local-login',
new LocalStrategy({
usernameField : 'email',
passwordField : 'password',
passReqToCallback : true
},
function(req, email, password, done) {
User.findOne({ 'email' : email }, function(err, user) {
if (err) return done(err);
if (!user){
req.flash("email", req.body.email);
return done(null, false, req.flash('loginError', 'No user found.'));
}
if (!user.authenticate(password)){
req.flash("email", req.body.email);
return done(null, false, req.flash('loginError', 'Password does not Match.'));
}
return done(null, user);
});
}
)
);
//set home routes
//var data_1 = {email:''};
app.get('/', function (req,res) {
res.redirect('/login');
//req.url = '/login';
//next();
});
app.get('/login', function (req,res) {
res.render('login/login',{email:req.flash("email")[0], loginError:req.flash('loginError')});
});
app.post('/login', function(req, res, next) {
passport.authenticate('local-login', function(err, user, info) {
if (err) { return next(err); }
if (!user) { return res.redirect('/login'); }
return res.redirect('/?channel='+ req.body.email);
})(req, res, next);
});
app.get('/logout', function(req, res) {
req.logout();
res.redirect('/login');
});
// set user routes
app.get('/users/new', function(req,res){
res.render('users/new', {
formData: req.flash('formData')[0],
emailError: req.flash('emailError')[0],
passwordError: req.flash('passwordError')[0]
}
);
}); // new
app.post('/users', checkUserRegValidation, function(req,res,next){
User.create(req.body.user, function (err,user) {
if(err) return res.json({success:false, message:err});
res.redirect('/login');
});
}); // create
//functions
function isLoggedIn(req, res, next) {
if (req.isAuthenticated()){
return next();
}else{
res.redirect('/login');
}
res.redirect('/');
}
function checkUserRegValidation(req, res, next) {
var isValid = true;
async.waterfall(
[function(callback) {
User.findOne({email: req.body.user.email, _id: {$ne: mongoose.Types.ObjectId(req.params.id)}},
function(err,user){
if(user){
isValid = false;
req.flash("emailError","- This email is already resistered.");
}
callback(null, isValid);
}
);
}], function(err, isValid) {
if(err) return res.json({success:"false", message:err});
if(isValid){
return next();
} else {
req.flash("formData",req.body.user);
res.redirect("back");
}
}
);
}
function handler(req,res){
console.log(req);
fs.readFile(__dirname + '/public/index.html', function(err,data){
if(err){
res.writeHead(500);
return res.end('Error loading index.html');
}
res.writeHead(200);
console.log("Listening on port 3000");
res.end(data);
});
fs.readFile(__dirname + '/public/style.css', function(err,data){
if(err){
res.writeHead(500);
return res.end('Error loading index.html');
}
res.writeHead(200);
console.log("Listening on port 3000");
res.end(data);
});
}
io.sockets.addListener('connection', function(socket){
console.log("connceted : " + socket.id);
var subscriber = redis.createClient(6379, 'localhost');
subscriber.psubscribe("*");
subscriber.on("pmessage", function(pattern, channel, message) {
//console.log(message);
socket.emit(channel, message);
});
socket.on('disconnect', function () {
console.log("disconnceted : " + socket.id);
subscriber.quit();
});
socket.on('close', function() {
console.log("close");
subscriber.quit();
});
});
app.listen(4000, function(){
console.log('Server On!!!');
});
我应该使用另一个快递来显示登录页面吗?或者我该怎么办? 我实际上是node.js中的新手。
有人可以帮帮我吗?
谢谢..
编辑:我的app.js代码
var express = require('express');
var app = express();
//Added for connecting login session
var http = require('http');
var server = http.createServer(app);
var path = require('path');
var mongoose = require('mongoose');
var passport = require('passport');
var session = require('express-session');
var flash = require('connect-flash');
var async = require('async');
var bodyParser = require('body-parser');
var cookieParser = require('cookie-parser');
var methodOverride = require('method-override');
//connecting database
mongoose.connect("private mongoDB address");
var db = mongoose.connection;
db.once("open",function () {
console.log("DB connected!");
});
db.on("error",function (err) {
console.log("DB ERROR :", err);
});
var bcrypt = require("bcrypt-nodejs");
var userSchema = mongoose.Schema({
email: {type:String, required:true, unique:true},
password: {type:String, required:true},
createdAt: {type:Date, default:Date.now}
});
userSchema.pre("save", function (next){
var user = this;
if(!user.isModified("password")){
return next();
} else {
user.password = bcrypt.hashSync(user.password);
return next();
}
});
userSchema.methods.authenticate = function (password) {
var user = this;
return bcrypt.compareSync(password,user.password);
};
var User = mongoose.model('user',userSchema);
app.set("view engine", 'ejs');
app.use(express.static(path.join(__dirname, 'public')));
//setting middleware for login
app.use(cookieParser());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended:true}));
app.use(methodOverride("_method"));
app.use(flash());
app.use(session({secret:'MySecret', resave: true, saveUninitialized: true}));
app.use(passport.initialize());
app.use(passport.session());
passport.serializeUser(function(user, done) {
//console.log('serializeUser()', user);
done(null, user.id);
});
passport.deserializeUser(function(id, done) {
//console.log('deserializeUser()', user);
User.findById(id, function(err, user) {
done(err, user);
});
});
var global_username = '';
var LocalStrategy = require('passport-local').Strategy;
passport.use('local-login',
new LocalStrategy({
usernameField : 'email',
passwordField : 'password',
passReqToCallback : true
},
function(req, email, password, done) {
User.findOne({ 'email' : email }, function(err, user) {
if (err) return done(err);
if (!user){
req.flash("email", req.body.email);
return done(null, false, req.flash('loginError', 'No user found.'));
}
if (!user.authenticate(password)){
req.flash("email", req.body.email);
return done(null, false, req.flash('loginError', 'Password does not Match.'));
}
var email_address = req.body.email;
var username = email_address.substring(0, email_address.lastIndexOf("@"));
global_username = username;
return done(null, user);
});
}
)
);
//set home routes
app.get('*', loggedInCheck); ------------------>This is the code with loggedInCheck function. I created another one instead of isLoggedIn function
app.get('/login', function (req,res) {
res.render('login/login',{email:req.flash("email")[0], loginError:req.flash('loginError')});
});
app.post('/login',
function (req,res,next){
next();
}, passport.authenticate('local-login', {
successRedirect : '/posts',
failureRedirect : '/login',
failureFlash : true
})
);
app.get('/logout', function(req, res) {
req.logout();
res.redirect('/login');
});
// set user routes
app.get('/users/new', function(req,res){
res.render('users/new', {
formData: req.flash('formData')[0],
emailError: req.flash('emailError')[0],
passwordError: req.flash('passwordError')[0]
}
);
}); // new
app.post('/users', checkUserRegValidation, function(req,res,next){
User.create(req.body.user, function (err,user) {
if(err) return res.json({success:false, message:err});
res.redirect('/login');
});
}); // create
app.get('/posts', isLoggedIn, function(req, res){
res.redirect('/status.html?channel=' + global_username);
});
//functions
function isLoggedIn(req, res, next) {
if (req.isAuthenticated()){
console.log("Authenticated");
console.log("Accessing to status.html");
return next();
}else{
console.log("Unauthorized Attempt");
res.redirect('/login');
}
}
function loggedInCheck(req, res, next) {
if (req.isAuthenticated()){
res.redirect('/status.html?channel=' + global_username);
}else{
console.log("Unauthorized Attempt");
res.redirect('/login');
}
}
server.listen(5000);
答案 0 :(得分:1)
在Express中,通话顺序很重要。
在您的情况下,app.use (express.static...
的呼叫在app.get ('/'...
之前完成,因此它具有更高的优先级。
由于express.static
结束了中间件链,它永远不会调用您的app.get
。
一种可能的解决方案是将app.get
置于app.use (express.static
之上。
但是,如果你这样做,你就永远无法展示你的index.html
。您可以添加条件,以选择是重定向到/login
还是调用next ()
以继续中间件链。
修改强>
在深入了解您的代码后,您似乎有一个中间件isLoggedIn
正在做正确的逻辑。
您可以保持中间件的顺序不变,并执行app.get('*', isLoggedIn);
这将为您的中间件调用任何GET
请求。
答案 1 :(得分:0)
嗨,我将你的app.js文件分成多个部分,以便隔离路由器,文件在下面给出。
app.js
var express = require('./express'),
mongoose = require('./mongoose'),
passport = require('./passport');
var db = mongoose();
var app = express();
var passport = passport();
app.listen(3000, function() {
console.log('Server running on port: ' + 3000);
});
express.js
var io = require('socket.io');
var express = require('express');
var app = express();
var redis = require('redis');
var sys = require('util');
var fs = require('fs');
//Added for connecting login session
var http = require('http');
var server = http.createServer(app);
var path = require('path');
var mongoose = require('mongoose');
var passport = require('passport');
var session = require('express-session');
var flash = require('connect-flash');
var async = require('async');
var bodyParser = require('body-parser');
var methodOverride = require('method-override');
module.exports = function() {
io = io.listen(server);
app.set("view engine", 'ejs');
app.use(express.static(path.join(__dirname, 'public')));
//setting middleware for login
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));
app.use(methodOverride("_method"));
app.use(flash());
app.use(session({secret: 'MySecret', resave: true, saveUninitialized: true}));
app.use(passport.initialize());
app.use(passport.session());
require('./passport');
require('./router')(app);
io.sockets.addListener('connection', function (socket) {
console.log("connceted : " + socket.id);
var subscriber = redis.createClient(6379, 'localhost');
subscriber.psubscribe("*");
subscriber.on("pmessage", function (pattern, channel, message) {
//console.log(message);
socket.emit(channel, message);
});
socket.on('disconnect', function () {
console.log("disconnceted : " + socket.id);
subscriber.quit();
});
socket.on('close', function () {
console.log("close");
subscriber.quit();
});
});
return app;
};
mongoose.js
var mongoose = require('mongoose');
module.exports = function() {
var db = mongoose.connect("mongodb://localhost/stacktest");
require('./model');
return db;
};
model.js
var mongoose = require('mongoose');
var bcrypt = require("bcrypt-nodejs");
var userSchema = mongoose.Schema({
email: {type:String, required:true, unique:true},
password: {type:String, required:true},
createdAt: {type:Date, default:Date.now}
});
userSchema.pre("save", function (next){
var user = this;
if(!user.isModified("password")){
return next();
} else {
user.password = bcrypt.hashSync(user.password);
return next();
}
});
userSchema.methods.authenticate = function (password) {
var user = this;
return bcrypt.compareSync(password,user.password);
};
mongoose.model('Users', userSchema);
passport.js
var passport = require('passport'),
LocalStrategy = require('passport-local');
module.exports = function() {
passport.serializeUser(function (user, done) {
done(null, user.id);
});
passport.deserializeUser(function (id, done) {
User.findById(id, function (err, user) {
done(err, user);
});
});
var LocalStrategy = require('passport-local').Strategy;
passport.use('local-login',
new LocalStrategy({
usernameField: 'email',
passwordField: 'password',
passReqToCallback: true
},
function (req, email, password, done) {
User.findOne({'email': email}, function (err, user) {
if (err) return done(err);
if (!user) {
req.flash("email", req.body.email);
return done(null, false, req.flash('loginError', 'No user found.'));
}
if (!user.authenticate(password)) {
req.flash("email", req.body.email);
return done(null, false, req.flash('loginError', 'Password does not Match.'));
}
return done(null, user);
});
}
)
);
};
最后是router.js
var passport = require('./passport');
module.exports = function(app) {
app.get('/', function (req, res) {
res.redirect('/login');
//req.url = '/login';
//next();
});
app.get('/login', function (req, res) {
res.render('login', {email: req.flash("email")[0], loginError: req.flash('loginError')});
});
app.post('/login', function (req, res, next) {
passport.authenticate('local-login', function (err, user, info) {
if (err) {
return next(err);
}
if (!user) {
return res.redirect('/login');
}
return res.redirect('/?channel=' + req.body.email);
})(req, res, next);
});
app.get('/logout', function (req, res) {
req.logout();
res.redirect('/login');
});
// set user routes
app.get('/users/new', function (req, res) {
res.render('users/new', {
formData: req.flash('formData')[0],
emailError: req.flash('emailError')[0],
passwordError: req.flash('passwordError')[0]
}
);
}); // new
};
我无法找到“checkUserRegValidation”'所以我不得不删除(因为我认为它与有问题的错误没有直接关系),然后我制作了两个ejs文件,用简单的标题识别页面(无论是登录页面还是索引),我得到了你的预期结果(在我的浏览器中放入localhost:// 3000时,呈现了登录页面。所以也许你可以尝试隔离你的文件,如果它有帮助,抱歉很长的答案。
答案 2 :(得分:0)
您想在'/index.html'之前加载'/ login'我假设您希望用户在到达主页之前登录。 此外,不要重定向,请尝试RENDERING。
在使用此代码之前,请将isLoggedIn重置为默认值。
app.get('/', function(req, res) {
if(!isLoggedIn)
res.render('login')
else
res.redirect('/');
});