Express.js应用程序错误:无法读取未定义的属性“transfer-encoding”

Question

我正在写一个

博客应用程序

(单击该链接可查看

GitHub

存储库)

快递

EJS

和MongoDB。

我正在尝试介绍一个

添加帖子图片

功能。作为Express的新手，我对遇到的问题感到困惑。

添加帖子表单：

<%= typeof form!='undefined' ? form.bodyholder : '' %>
  
  Upload an image
  
    
  
  
    
      
    
    
      Cancel

在控制器中我的

methos如下所示：

const Post = require('../../models/post');
const { validationResult } = require('express-validator');

const storage = multer.diskStorage({
    destination: function (req, file, cb) {
            cb(null, './uploads/images')
    },
    filename: function (req, file, cb) {
            cb(null, file.fieldname + '-' + Date.now() + '.png')
    }
});

const upload = multer({ storage: storage }).single('postimage');

exports.addPost = (req, res, next) => {

    upload(function(err) {
        if (err) {
            console.log("There was an error uploading the image.");
        }
        res.json({
            success: true,
            message: 'Image uploaded!'
        });
    })

    var form = {
        titleholder: req.body.title,
        excerptholder: req.body.excerpt,
        bodyholder: req.body.body
    };

    const errors = validationResult(req);

    const post = new Post();

    post.title = req.body.title;
    post.short_description = req.body.excerpt;
    post.full_text = req.body.body;

    if (!errors.isEmpty()) {
        req.flash('danger', errors.array())
        res.render('admin/addpost', {
            layout: 'admin/layout',
            website_name: 'MEAN Blog',
            page_heading: 'Dashboard',
            page_subheading: 'Add New Post',
            form: form
        });
    } else {
        post.save(function(err) {
            if (err) {
                console.log(err);
                return;
            } else {
                req.flash('success', "The post was successfully added");
                req.session.save(() => res.redirect('/dashboard'));
            }
        });
    }
}

我也有

在(控制器的)顶部。

“添加新帖子”表单运行良好，直到我尝试添加此上传功能。我目前使用的代码抛出了这个错误：

Cannot read property 'transfer-encoding' of undefined
    at hasbody (C:\Path\To\Application\node_modules\type-is\index.js:93:21)

我做错了什么？

Answer 1

你不见了

和

在你的

，尝试添加这两个，如下所示

upload(req, res, function (err) {
        if (err) {
            console.log("There was an error uploading the image.");
        }
        res.json({
            success: true,
            message: 'Image uploaded!'
        });
    })