Node.js 得到一个；makeError处出现意外字段“；上载表单时

我的表单有一个文件（在我的例子中是图像）和一些文本的输入。当我点击submit按钮时，出现了声明的错误。我已经有这个问题两天了，我试图了解问题所在，但我的努力徒劳无功，我决定让步并寻求帮助

这是我的图像控制器：

// using this to generate a random name for an image
var possible = 'abcdefghijklmnopqrstuvwxyz0123456789',
    imgUrl = '';

// this is just a loop to create a 10 character random name
for(var i = 0; i < 10; i++) {
    imgUrl += possible.charAt(Math.floor(Math.random() *
              possible.length));
}

/* I saw an answer to a similar question where the correct answer author 
said path will always refer to folder where the input folder resides */

var tempPath = req.file.path,
    ext = path.extname(req.file.path).toLower(),
    targetPath = './app/controller/store/' + imgUrl + ext;

// Check if image is of the correct format
if (ext === '.png' || ext === '.jpg' || ext === '.jpeg' || ext === '.gif')
{
    fs.rename(tempPath, targetPath, function(err) {
        if (err) throw err;
        res.redirect('/posts/'+ imgUrl);
    });
} else {
    fs.unlink(tempPath, function () {
        if (err) throw err;
        res.json(500, {error: 'Only image files are allowed.'});
    });

var post = new Post({
    content: req.body.content,
    author: req.user,
    filename: imgUrl + ext
});

post.save(function(err) {
    if(err) {
        return res.status(400).send({
            message: getErrorMessage(err)
        });
    } else res.json(post);
});
}

如果您能引导我走上正确的道路，我将不胜感激。谢谢您。single（'parameter'）表示输入字段的名称为'parameter'

就你而言：

app.use(multer({dest: './app/controller/store'}).single('photo'));

您将“photo”参数传递到单个func中

那么您的表单应该如下所示，更改它：

..
    ..
    <input type="file" name="photo">
    ..
..

。。
..
..
..

app.use(multer({dest: './app/controller/store'}).single('photo'));

..
    ..
    <input type="file" name="photo">
    ..
..