节点服务器 Multer req.files 为空

Question

我一直在尝试通过 multer 数组方法将几张图像上传到我的 Node js 服务器，并且我已经阅读并尝试了大约 20 种不同的方法，但都没有成功。我正在使用 Alamofire .upload 方法通过 iOS 上传，该方法为 http 正文生成 multipart/form-data。我能够成功上传单张图片，但不能上传数组。

iOS 部分

Alamofire.upload(
        multipartFormData: { multipartFormData in
            for img in images {
                guard let imageData = UIImageJPEGRepresentation(img, 0.25) else { 
                    return 
                }
                multipartFormData.append(imageData, withName: "photo")
            }
    },

route.js

var upload = multer({
    dest: './jobs',
    limits: (40 * 1024 * 1024), // (MB * kb * bytes)
    storage: multer.memoryStorage()
});

router.post("/xyz/:id/upload", upload.array('photo'), function (req, res) { //  upload.single('photo')
    console.log("POST to job photo upload route \n");
    const mDy = new Date().toLocaleDateString(format, dateOptions);
    var filePath = String("xyz/" + req.params.id + " " + mDy + ".jpg");
    var writeStream = fs.createWriteStream(filePath);

    req.pipe(writeStream);
    console.log(req.files);

    req.on('end', () => {
        res.send(201, "photos saved");
        console.log("photos saved");
    });

});

Answer 1

能够解决这个问题，一直错过

fileName: "photo.jpg"

这一行的属性：

multipartFormData.append(imageData, fileName: "photo.jpg", withName: "photo")