Req.File.Path 未定义

Question

我正在尝试使用 multer 将图像上传到 mysql 数据库，但我收到一条错误消息

TypeError: Cannot read property 'path' of undefined

我的App.js

var multer = require('multer');
app.use(express.static("public"));
app.post("/updateImage/add",multer({ dest: './public/uploads/'}).single('img') ,contentUpdate.addImage);

我的contentUpdate.js

exports.addImage = function(req, res) {
   var path = (req.file.path).replace("public/", '');
    console.log(path);
   var data =
      {                
            image: path
      };

var URLs = data.PageURL;
connection.query('INSERT INTO `updatedimages` SET ?', [data], function(err, rows)
 {
    if (err)
    {
      console.log(err);
    } else
    {
      req.flash('success','Entry Successful');
      return res.redirect(URLs);
    }
 });
};

我的updateImage.handlebars

<form  id="myForm" action='/updateImage/add'  method='POST'  >
    <div class="col-md-12" >
  <input name='img' type="file" class="form-control"  required/>
</div>
<div>

    <button type="submit" class="glyphicon glyphicon-submit btn btn-primary ">

  </div>

Answer 1

更改以下内容：

<input name='img' type="file" class="form-control"  required/>

至

<input name='file' type="file" class="form-control"  required/>

然后尝试：

app.post("/updateImage/add",multer({ dest: './public/uploads/'}).single('file') ,contentUpdate.addImage);

Answer 2

您需要在HTML中设置正确的编码类型：

<form  id="myForm" action='/updateImage/add' method='POST' enctype='multipart/form-data'>

即便如此，也验证输入总是好的：

if (! req.file || ! req.file.path) {
  return res.sendStatus(400);
}

Req.File.Path 未定义

Req.File.Path is undefined

mysql

node.js

handlebars.js

multer