无法使用NODE + mongoose + multer从mongooDB检索图像成功上传图像到服务器后，multer将图像数据保存到mongooDB
它是我架构：

const mongoose = require('mongoose');
let Schema = mongoose.Schema;
const imageSchema = new Schema({
    name: String,
    desc: String,
    img:
        {
            data: Buffer,
            contentType: String
        }
})

const Image = mongoose.model('Image', imageSchema);
module.exports = Image;

//its my server side

let storage = multer.diskStorage({
    destination: (req, file, cb) => {
        cb(null, 'uploads')
    },
    filename: (req, file, cb) => {
        let extArray = file.mimetype.split("/");
        let extension = extArray[extArray.length - 1];
        cb(null, file.fieldname + '.' + extension)
    }
});

let upload = multer({ storage: storage });


app.post('/uploadImage', upload.single('image'),async (req, res, next) => {
    let extArray = req.file.mimetype.split("/");
    let extension = extArray[extArray.length - 1];
    let obj = {
        name: '1',
        desc: '1',
        img: {
            data: fs.readFileSync(path.join(__dirname + '/uploads/' + req.file.filename)),
            contentType: `image/${extension}`,
        }
    }
    await new Image(obj).save().then(image =>{
        res.send(image)
    })

//its my client side 

/*eslint-disable*/

const uploadPicture = () => {
    const uploadButton = document.getElementById('add-picture');

    const pushImage = (event) => {
        let form = new FormData();
        form.append('image', event.target.files[0]);
        $.ajax({
            url: '/uploadImage',
            type: 'POST',
            processData: false,
            contentType: false,
            dataType: 'json',
            data: form,
        }).then((image) => {

            document.getElementById('added-image').src = `data:${image.img.contentType};base64,${image.img.data.toString('base64')}`;
        })
    }

    uploadButton.addEventListener('change', pushImage, false);



}
export {uploadPicture}


});

我上传图像后，图像保存在文件夹'上传'和保存在mongoo enter image description here
但在浏览器中我得到错误数据：图像/jpeg;base64，[对象对象]：1获取数据：图像/jpeg;base64，[对象对象]网络：：错误_无效_URL
enter image description here
请帮帮我，我做错了什么？
我尝试改变urlencoded到utf-8，但没有帮助我