TypeError:req.flash不是一个函数

当我尝试从页面login,我得到错误return done(null, false, req.flash('loginMessage', 'User does not exist')); TypeError: req.flash is not a function

以下是我的server.js和passport.jsconfiguration:

server.js:

 var express = require('express'); var app = express(); var bodyParser = require('body-parser'); var methodOverride = require('method-override'); var session = require('express-session'); var ejs = require('ejs'); var mongoose = require('mongoose'); var passport = require('passport'); var flash = require('connect-flash'); mongoose.connect('mongodb://localhost:mydb'); require('./config/passport')(passport); app.use(express.static('public')); app.set('view engine', 'ejs'); app.set('views', __dirname+'/public/views'); app.use(bodyParser.urlencoded({'extended':'true'})); app.use(bodyParser.json()); app.use(methodOverride()); app.use(session({secret:'learningpassport', resave: true, saveUnitialized: true})); app.use(passport.initialize()); app.use(passport.session()); app.use(flash()); require('./app/routes')(app,passport); app.listen(3000); 

configuration/ passport.js:

 var LocalStrategy = require('passport-local').Strategy; var User = require('../app/model/user'); module.exports = function(passport){ passport.serializeUser(function(user, done){ done(null,user.id); }); passport.deserializeUser(function(id, done){ User.findById(id, function(err,user){ done(err, user); }); }); passport.use('local-signup', new LocalStrategy({ usernameField: 'username', passwordField: 'password', passReqToCallback: true }, function(req,username, password, done){ process.nextTick(function(){ User.findOne({'local.username': username}, function(err, user){ if(err) return done(err); if(user) return done(null, false, req.flash('signupMessage','The username already exists' )); else{ var newUser = new User(); newUser.local.username = username; newUser.local.password = newUser.generateHash(password); newUser.save(function(err){ if(err) throw done(err); return done(null, newUser); }); } }); }); })); passport.use('local-login', new LocalStrategy({ usernameField: 'username', passwordField: 'password', passReqToCallBack: true },function(req,username, password, done){ process.nextTick(function(){ User.findOne({'local.username': username}, function(err,user){ if(err) return done(err); if(!user){ console.log(req.flash); return done(null, false, req.flash('loginMessage', 'User does not exist')); } if(!user.validPassword(password)){ return done(null,false, req.flash('loginMessage', 'Password is not correct')); } return done(null, user); }); }); })); }; 

我真的很感激大家的帮助!

loginservice.config.js

 'use strict'; angular.module('loginservice').factory('lgservice',function($http){ var myservice = { async: function(username, password){ var promise = $http.post('/login',{ username: username, password: password }).then(function(response){ return response; }); return promise; } }; return myservice; }); 

routes.js

 module.exports = function(app,passport) { app.get('/', function (req, res) { console.log('/'); res.render('pages/login', { message: req.flash('loginMessage') }); }); app.get('/about', function (req, res) { console.log('/about'); res.render('pages/about'); }); app.get('/signup', function (req, res) { console.log('sign up'); res.render('pages/signup', { message: req.flash('signupMessage') }); }); app.get('/logout', function (req, res) { req.logout(); res.redirect('/'); }); app.get('/home', isLoggedIn, function (req, res) { res.render('pages/home', { user: req.user }); }); app.post('/signup', passport.authenticate('local-signup', { successRedirect: '/home', failureRedirect: '/signup', failureFlash: true })); app.post('/login', passport.authenticate('local-login', { successRedirect: '/home', failureRedirect: '/', failureFlash: true })); }; funtion isLoggedIn(req,res,next){ if(req.isAuthenticated()){ return next(); } res.redirect('/'); } 

       

网上收集的解决方案 "TypeError:req.flash不是一个函数"

你做了一个拼写错误

 passReqToCallback : true instead of passReqToCallBack: true 

你可能不得不移动app.use(flash()); 中间件堆栈以便在护照之前处理。

尝试这个。

 passport.use('local-login', new LocalStrategy({ usernameField: 'username', passwordField: 'password', passReqToCallBack: true }, function(username, password, done) { process.nextTick(function() { User.findOne({ 'local.username': username }, function(err, user) { if (err) return done(err); if (!user) { console.log(req.flash); return done(null, false, req.flash('loginMessage', 'User does not exist')); } if (!user.validPassword(password)) { return done(null, false, req.flash('loginMessage', 'Password is not correct')); } return done(null, user); }); }); }))(req,res,next); 

希望这个帮助。