TypeError：无法读取未定义的Node.js的属性“图像”

Question

当我尝试上传一些图片或点击未选择图片的上传时出现此错误：

TypeError: Cannot read property 'image' of undefined
at E:\WEB\WebProjekat\routes\admin_products.js:58:38
at Layer.handle [as handle_request]         (E:\WEB\WebProjekat\node_modules\express\lib\router\layer.js:95:5)
at next (E:\WEB\WebProjekat\node_modules\express\lib\router\route.js:137:13)
at Route.dispatch (E:\WEB\WebProjekat\node_modules\express\lib\router\route.js:112:3)
at Layer.handle [as handle_request]     (E:\WEB\WebProjekat\node_modules\express\lib\router\layer.js:95:5)
at E:\WEB\WebProjekat\node_modules\express\lib\router\index.js:281:22
at Function.process_params (E:\WEB\WebProjekat\node_modules\express\lib\router\index.js:335:12)
at next (E:\WEB\WebProjekat\node_modules\express\lib\router\index.js:275:10)
at Function.handle (E:\WEB\WebProjekat\node_modules\express\lib\router\index.js:174:3)
at router (E:\WEB\WebProjekat\node_modules\express\lib\router\index.js:47:12)
at Layer.handle [as handle_request] (E:\WEB\WebProjekat\node_modules\express\lib\router\layer.js:95:5)
at trim_prefix (E:\WEB\WebProjekat\node_modules\express\lib\router\index.js:317:13)
at E:\WEB\WebProjekat\node_modules\express\lib\router\index.js:284:7
at Function.process_params (E:\WEB\WebProjekat\node_modules\express\lib\router\index.js:335:12)
at next (E:\WEB\WebProjekat\node_modules\express\lib\router\index.js:275:10)
at E:\WEB\WebProjekat\app.js:90:3

这是表格的样子：http://prntscr.com/nlmeq4

我遵循了youtube上的一些教程，其中他使用了完全相同的代码，并且对他有用。

这是Admin_products和app.js的代码

admin_products.js：

var express = require('express');
var router = express.Router();
var mkdirp = require('mkdirp');
var fs = require('fs-extra');
var resizeImg = require('resize-img');

//Get product model
var Product = require('../models/product');

//Get Category model
var Category = require('../models/category');

/*
 * GET products index
 */

router.get('/', function (req, res) {
var count;

Product.count(function (err, c) {
    count = c;
});

Product.find(function (err, products) {
    res.render('admin/proizvodi', {
        products: products,
        count: count
    });
});
});

/*
 * GET add products
 */

router.get('/dodaj-proizvod', function (req, res) {

var title = "";
var desc = "";
var price = "";

Category.find(function (err, categories) {
    res.render('admin/dodaj_proizvod', {
        title: title,
        desc: desc,
        categories: categories,
        price: price
    });
});
});

/*
 * POST add products index
 */

router.post('/dodaj-proizvod', function (req, res) {

var imageFile = typeof req.files.image !== "undefined" ?         req.files.image.name : "";

req.checkBody('title', 'Morate uneti naziv proizvoda.').notEmpty();
req.checkBody('desc', 'Morate uneti opis proizvoda.').notEmpty();
req.checkBody('price', 'Morate uneti cenu proizvoda.').isDecimal();
req.checkBody('image', 'Morate uploadovati sliku     proizvoda').isImage(imageFile);

var title = req.body.title;
var slug = title.replace(/\s+/g, '-').toLowerCase();
var desc = req.body.desc;
var price = req.body.price;
var category = req.body.category;

var errors = req.validationErrors();

if (errors) {
    Category.find(function (err, categories) {
    res.render('admin/dodaj_proizvod', {
        errors: errors,
        title: title,
        desc: desc,
        categories: categories,
        price: price
    });
});
} else {
    Product.findOne({slug: slug}, function (err, product) {
        if (product) {
            req.flash('danger', 'Uneli ste naslov proizvoda koji vec     postoji, izaberite drugi.');
            Category.find(function (err, categories) {
            res.render('admin/dodaj_proizvod', {
                title: title,
                desc: desc,
                categories: categories,
                price: price
            });
        });
        } else {
            var price2 = parseFloat(price).toFixed(2);
            var product = new Product({
                title: title,
                slug: slug,
                desc: desc,
                price: price2,
                category: category,
                image: imageFile
            });

            product.save(function (err) {
                if(err)
                    return console.log(err);

                mkdirp('public/slike_proizvoda/'+product._id, function     (err) {
                    return console.log(err);
                });

                mkdirp('public/slike_proizvoda/'+product._id + '/galerija', function (err) {
                    return console.log(err);
                });

                mkdirp('public/slike_proizvoda/'+product._id + '/galerija/ikonice', function (err) {
                    return console.log(err);
                });

                if (imageFile != "") {
                    var productImage = req.files.image;
                    var path = 'public/slike_proizvoda/'+product._id + '/' + imageFile;

                    productImage.mv(path, function (err) {
                        return console.log(err);
                    });
                }

                req.flash('success', 'Proizvod je dodat!');
                res.redirect('/admin/proizvodi');
            });
        }
    });
}

});

//Exports
module.exports = router;`

app.js：

var express = require('express');
var path = require('path');
var mongoose = require('mongoose');
var config = require('./config/database');
var bodyParser = require('body-parser');
var Busboy = require('busboy');
var session = require('express-session');
var expressValidator = require('express-validator');
var fileUpload = require('express-fileupload');


// Connect to db
mongoose.connect(config.database, {useNewUrlParser: true});
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function() {
  console.log('Connected to mongoDB')
});


// Init app
var app = express();

// View engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// Set public foler
app.use(express.static(path.join(__dirname, 'public')));

// Set global errors variable
app.locals.errors = null;

// Express fileUpload middlware
app.use(fileUpload());

// Body Parser middleware
// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false }));
// parse application/json
app.use(bodyParser.json());

// Express Session middleware
app.use(session({
  secret: 'keyboard cat',
  resave: true,
  saveUninitialized: true,
  //cookie: { secure: true }
}));

// Express Validator middleware
app.use(expressValidator({
errorFormater: 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
    };
},
customValidators: {
    isImage: function (value, filename) {
        var extension = (path.extname(filename)).toLowerCase();
        switch(extension) {
            case '.jpg':
                return '.jpg';
            case '.jpeg':
                return '.jpeg';
            case '.png':
                return '.png';
            case '':
                return '.jpg';
            default: 
                return false;
        }
    }
}
}));

// Express Messages middleware
app.use(require('connect-flash')());
app.use(function (req, res, next) {
  res.locals.messages = require('express-messages')(req, res);
  next();
});


// Set routs
var pages = require('./routes/pages.js');
var adminPages = require('./routes/admin_pages.js');
var adminCategories = require('./routes/admin_categories.js');
var adminProducts = require('./routes/admin_products.js');

app.use('/admin/stranice', adminPages);
app.use('/admin/kategorije', adminCategories);
app.use('/admin/proizvodi', adminProducts);
app.use('/', pages);

// Start the server
var port = 3000;
app.listen(port, function(){
console.log('Server started on port ' + port);
});`