如何将nodejs中的多个文件上传到AWS S3并将文件url保存到数据库中？

嗨，我需要在 s3 上一次上传多张图片。目前我正在使用express-fileupload在 AWS 上上传单个图像，并且我想使用相同的方法将多个文件上传到 s3 并使用 mongodb 上的 url 更新图像数组。

我的架构属性：

const ServiceSchema = new mongoose.Schema(
{
    photo: [
        {
            type: String,
            default: 'no-photo.jpg',
        },
    ],
});
module.exports = mongoose.model('Service', ServiceSchema);

我的控制器：

// @desc        Upload photo for service
// @route       PUT /api/v1/services/:id/photo
// @access      Private
exports.servicePhotoUpload = asyncHandler(async (req, res, next) => {
const service = await Service.findById(req.params.id);

if (!service) {
    return next(new ErrorResponse(`Service not found with id of ${req.params.id}`, 404));
}

// Make sure user adding service is business owner
if (service.user.toString() !== req.user.id && req.user.role !== 'admin') {
    return next(
        new ErrorResponse(
            `User ${req.user.id} is not authorized to update this service to business ${service._id}`,
            401
        )
    );
}

// File Upload validation
if (!req.files) {
    return next(new ErrorResponse(`Please upload a file.`, 400));
}

const file = req.files.file;

// Make sure it is a valid image file
if (!file.mimetype.startsWith('image')) {
    return next(new ErrorResponse(`Please upload a valid image file.`, 400));
}

//Check File Size
if (file.size > process.env.MAX_FILE_UPLOAD) {
    return next(
        new ErrorResponse(
            `Please upload an image less then ${process.env.MAX_FILE_UPLOAD / 1024}KB in size.`,
            400
        )
    );
}

// Create custom filename
file.name = `service-uploads/servicePhoto_${service._id}${path.parse(file.name).ext}`;

uploadToS3({
    fileData: req.files.file.data,
    fileName: file.name,
})
    .then(async (result) => {
        console.log('Success Result: ', result);

        await Service.findByIdAndUpdate(service._id, { photo: result.Location });

        return res
            .status(200)
            .json({ success: true, message: 'Service photo added successfully', url:    result.Location });
    })
    .catch((err) => {
        console.log(err);
        return next(new ErrorResponse('Failed to upload file to S3', 500));
    });
  });

我的实用程序文件将文件上传到 S3：

const AWS = require('aws-sdk');

const uploadToS3 = (options) => {
// Set the AWS Configuration
AWS.config.update({
    accessKeyId: process.env.AWS_S3_ACCESS_KEY,
    secretAccessKey: process.env.AWS_S3_SECRET_KEY,
    region: 'us-east-2',
});

// Create S3 service object
const s3 = new AWS.S3({ apiVersion: '2006-03-01' });

// Setting up S3 upload parameters
const params = {
    Bucket: 'toolbox-uploads',
    Key: options.fileName, // File name you want to save as in S3
    Body: options.fileData, //
};

// Return S3 uploading function as a promise so return url can be handled properly
return s3.upload(params).promise();
};

module.exports = uploadToS3;

我的路由器：

const express = require('express');
const {
 servicePhotoUpload
} = require('../controllers/service');

const Service = require('../models/Service');

router.route('/:id/photo').put(protect, authorize('publisher', 'business', 'admin'),  servicePhotoUpload);
 module.exports = router;

上面的代码是 100% 工作的。

我有点困惑，因为有不同的方法，谷歌和堆栈溢出都没有对我有用，而且他们都没有得到返回 url 并保存到数据库中。

我想制作单独的实用程序文件以将多个文件上传到 3，就像我对单个文件所做的一样，以便在任何地方使用它们。该文件应返回上传的网址，以便我可以更新我的数据库。我试过multer-s3，但没有解决方案适合我。