我有一个node-express应用程序，使用multer验证用户数据和上传文件，当我点击提交时，名称，电子邮件，用户名和密码字段存储在mongodb数据库中。但是profileimage文件不存储在uploads文件夹中，也不存储在monogdb中。我尝试使用我在网上找到的一些帮助，但都使用我的应用程序，但没有将图片存储在文件夹中，也没有mongodb通过我使用的模型所预期的cli中的profileimage字段。请问我在这里没有得到什么，这是阻止文件被上传并存储在所需的文件夹中以及mongodb cli中显示的文件的名称？
注意：其他适用于我的应用程序的代码在下面的代码示例中进行了注释，但没有将代码存储在所需的文件夹中。
users.js
var express = require('express');
var router = express.Router();
var multer = require('multer');
var uploads = multer({dest: './uploads/'});
/*var storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, './uploads/');
},
filename: function (req, file, cb) {
var originalname = file.originalname;
var extension = originalname.split(".");
filename = Date.now() + '.' + extension[extension.length-1];
cb(null, filename);
}
}); */
//Require a model page
var User = require('../models/user');
/* GET users listing. */
router.get('/', function(req, res, next) {
res.send('respond with a resource');
});
router.get('/register', function(req, res, next) {
res.render('register', {
'title': 'Register'
});
});
router.get('/login', function(req, res, next) {
res.render('login', {
'title': 'Log In'
});
});
//router.post('/register', multer({storage: storage, dest: './uploads/'}).single('profileimage'), function(req,res){
router.post('/register', uploads.single('profileimage'), function(req,res,next){
//Get Form Value
var name = req.body.name;
var email = req.body.email;
var username = req.body.username;
var password = req.body.password;
var password2 = req.body.password2;
//Check for Image field
if(req.file){
console.log('uploading File...');
// File Info
var profileImageOriginalName = req.files.profileimage.originalname;
var profileImageName = req.files.profileimage.name;
var profileImageMime = req.files.profileimage.mimetype;
var profileImagePath = req.files.profileimage.path;
var profileImageExt = req.files.profileimage.extension;
var profileImageSize = req.files.profileimage.size;
} else {
// Set a Default Image
var profileImageName = 'noimage.png';
}
/*if(req.file){
console.log('uploading File...');
// File Info
originalname = req.files.profileimage.originalname;
feildname = req.files.profileimage.fieldname;
mimetype = req.files.profileimage.mimetype;
path = req.files.profileimage.path;
encoding = req.files.profileimage.encoding;
size = req.files.profileimage.size;
} else {
// Set a Default Image
var original = 'noimage.png';
} */
//Form Validation
req.checkBody('name', 'Name Field is required').notEmpty();
req.checkBody('email', 'Email Field is required').notEmpty();
req.checkBody('email', 'Email not valid').isEmail();
req.checkBody('username', 'Username Field is required').notEmpty();
req.checkBody('password', 'Password Field is required').notEmpty();
req.checkBody('password2', 'Passwords do not match').equals(req.body.password);
//Check for Errors
var errors = req.validationErrors();
if(errors){
res.render('register',{
errors: errors,
name: name,
email: email,
username: username,
password: password,
password2: password2
});
} else {
var newUser = new User({
name: name,
email: email,
username: username,
password: password,
profileImage: profileImageName
});
//Create User
User.createUser(newUser, function (err, user) {
if(err) throw err;
console.log(user);
});
//Success Message
req.flash('success', 'You are now registered and may Log in');
res.location('/');
res.redirect('/');
}
});
module.exports = router;
app.js
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var expressValidator = require('express-validator');
var cookieParser = require('cookie-parser');
var session = require('express-session');
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var bodyParser = require('body-parser');
//var multer = require('multer');
var flash = require('connect-flash');
var mongo = require('mongodb');
var mongoose = require('mongoose');
var db = mongoose.connection;
var multer = require('multer');
var routes = require('./routes/index');
var users = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
//Handle File Uploads
var upload = multer({ dest: './uploads' });
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
//Handle Express Sessions
app.use(session({
secret:'secret',
saveUninitialized: true,
resave: true
}));
//Passport
app.use(passport.initialize());
app.use(passport.session());
// Validator
app.use(expressValidator({
errorFormatter: function(param, msg, value) {
var namespace = param.split('.')
, root = namespace.shift()
, formParam = root;
while(namespace.length) {
formParam += '[' + namespace.shift() + ']';
}
return {
param : formParam,
msg : msg,
value : value
};
}
}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(flash());
app.use(function (req, res, next) {
res.locals.messages = require('express-messages')(req, res);
next();
});
app.use('/', routes);
app.use('/users', users);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
module.exports = app;
models / user.js
var mongoose = require('mongoose');
//This chooses the database to use for storing data a very important step
mongoose.connect('mongodb://localhost/nodeauth');
var db = mongoose.connection;
//User Schema
var UserSchema = mongoose.Schema({
username: {
type: String,
index: true
},
password: {
type: String
},
email: {
type: String
},
name: {
type: String
},
profileimaage: {
type: String
}
});
var User = module.exports = mongoose.model('User', UserSchema);
module.exports.createUser = function (newUser, callback) {
newUser.save(callback);
}
答案 0 :(得分：1)
在您的应用中创建multerhelper.js文件，并在其中添加以下代码
const multer = require('multer');
// const fs = require('fs');
let fs = require('fs-extra');
let storage = multer.diskStorage({
destination: function (req, file, cb) {
let Id = req.body.id;
let path = `tmp/daily_gasoline_report/${Id}`;
fs.mkdirsSync(path);
cb(null, path);
},
filename: function (req, file, cb) {
// console.log(file);
let extArray = file.mimetype.split("/");
let extension = extArray[extArray.length - 1];
cb(null, file.fieldname + '-' + Date.now() + "." + extension);
}
})
var upload = multer({ storage: storage });
let createUserImage = upload.single('images');
let multerHelper = {
createUserImage,
}
module.exports = multerHelper;
在user.js文件中导入该文件
const multerhelper = require("../multerhelper.js");
router.post('/register',multerhelper , function(req,res,next){
答案 1 :(得分：0)