Node.js 如何使用Multer-S3从不同字段向AWS S3发送多个文件_Node.js_Amazon Web Services_Amazon S3_Multer_Multer S3

Node.js 如何使用Multer-S3从不同字段向AWS S3发送多个文件

node.js amazon-web-services amazon-s3

Node.js 如何使用Multer-S3从不同字段向AWS S3发送多个文件,node.js,amazon-web-services,amazon-s3,multer,multer-s3,Node.js,Amazon Web Services,Amazon S3,Multer,Multer S3,我目前正在使用Postman，我需要将两个文件从两个不同的字段上传到AWS-S3；这就是它的样子：这是我正在调用的API路由： router.route('/').post(uploadThumbnail, uploadVideo, createVideo); 该路由调用三个函数（应该返回邮递员请求的数据）：以下是另外两个功能（带有aws上传功能）；一个用于缩略图，另一个用于视频url： const upload = multer({ storage: multerS3({ s

我目前正在使用Postman，我需要将两个文件从两个不同的字段上传到AWS-S3；这就是它的样子：这是我正在调用的API路由：

router.route('/').post(uploadThumbnail, uploadVideo, createVideo);

该路由调用三个函数（应该返回邮递员请求的数据）：

以下是另外两个功能（带有aws上传功能）；一个用于缩略图，另一个用于视频url：

const upload = multer({
  storage: multerS3({
    s3: s3,
    bucket: process.env.AWS_BUCKET_NAME,
    acl: 'public-read',
    key: function(req, file, cb) {
      const strOne = process.env.WEBSITE_NAME + '-';
      const userId = req.user.id + '-';
      const userEmail = req.user.email + '-';
      const todaysDate = Date.now().toString() + '.';
      const extension = file.mimetype.split('/')[1];
      const finalStr = strOne.concat(userId, userEmail, todaysDate, extension);
      cb(null, finalStr);
    }
  })
});
exports.uploadThumbnail = upload.single('thumbnail');
exports.uploadVideo = upload.single('video_url');

每次我运行post时，邮递员都会向我抛出以下错误：

{
    "status": "error",
    "error": {
        "name": "MulterError",
        "message": "Unexpected field",
        "code": "LIMIT_UNEXPECTED_FILE",
        "field": "video_url",
        "storageErrors": [],
        "statusCode": 500,
        "status": "error"
    },
    "message": "Unexpected field",
    "stack": "MulterError: Unexpected field\n    at wrappedFileFilter (C:\\xampp\\htdocs\\myporn\\node_modules\\multer\\index.js:40:19)\n    at Busboy.<anonymous> (C:\\xampp\\htdocs\\myporn\\node_modules\\multer\\lib\\make-middleware.js:114:7)\n    at Busboy.emit (events.js:198:13)\n    at Busboy.EventEmitter.emit (domain.js:448:20)\n    at Busboy.emit (C:\\xampp\\htdocs\\myporn\\node_modules\\busboy\\lib\\main.js:38:33)\n    at PartStream.<anonymous> (C:\\xampp\\htdocs\\myporn\\node_modules\\busboy\\lib\\types\\multipart.js:213:13)\n    at PartStream.emit (events.js:198:13)\n    at PartStream.EventEmitter.emit (domain.js:448:20)\n    at HeaderParser.<anonymous> (C:\\xampp\\htdocs\\myporn\\node_modules\\dicer\\lib\\Dicer.js:51:16)\n    at HeaderParser.emit (events.js:198:13)\n    at HeaderParser.EventEmitter.emit (domain.js:448:20)\n    at HeaderParser._finish (C:\\xampp\\htdocs\\myporn\\node_modules\\dicer\\lib\\HeaderParser.js:68:8)\n    at SBMH.<anonymous> (C:\\xampp\\htdocs\\myporn\\node_modules\\dicer\\lib\\HeaderParser.js:40:12)\n    at SBMH.emit (events.js:198:13)\n    at SBMH.EventEmitter.emit (domain.js:448:20)\n    at SBMH._sbmh_feed (C:\\xampp\\htdocs\\myporn\\node_modules\\streamsearch\\lib\\sbmh.js:159:14)\n    at SBMH.push (C:\\xampp\\htdocs\\myporn\\node_modules\\streamsearch\\lib\\sbmh.js:56:14)\n    at HeaderParser.push (C:\\xampp\\htdocs\\myporn\\node_modules\\dicer\\lib\\HeaderParser.js:46:19)\n    at Dicer._oninfo (C:\\xampp\\htdocs\\myporn\\node_modules\\dicer\\lib\\Dicer.js:197:25)\n    at SBMH.<anonymous> (C:\\xampp\\htdocs\\myporn\\node_modules\\dicer\\lib\\Dicer.js:127:10)\n    at SBMH.emit (events.js:198:13)\n    at SBMH.EventEmitter.emit (domain.js:448:20)\n    at SBMH._sbmh_feed (C:\\xampp\\htdocs\\myporn\\node_modules\\streamsearch\\lib\\sbmh.js:188:10)\n    at SBMH.push (C:\\xampp\\htdocs\\myporn\\node_modules\\streamsearch\\lib\\sbmh.js:56:14)\n    at Dicer._write (C:\\xampp\\htdocs\\myporn\\node_modules\\dicer\\lib\\Dicer.js:109:17)\n    at doWrite (_stream_writable.js:415:12)\n    at writeOrBuffer (_stream_writable.js:399:5)\n    at Dicer.Writable.write (_stream_writable.js:299:11)"
}

{
“状态”：“错误”，
“错误”：{
“名称”：“Multerror”，
“消息”：“意外字段”，
“代码”：“限制意外文件”，
“字段”：“视频url”，
“存储错误”：[]，
“状态代码”：500，
“状态”：“错误”
},
“消息”：“意外字段”，
在Busboy.emit（events.js:198:13）\n在Busboy.EventEmitter.emit（domain.js:448:20）\n在Busboy.emit（events.js:198:13）\n在Busboy.EventEmitter.emit（domain.js:448:20）\n（C:\\xampp\\htdocs\\myporn\\node\u modules\\busboy\\lib\\main.js:38:33）\n在PartStream。（C:\\xampp\\htdocs\\myporn\\node\u modules\\busboy\\lib\\types\\multipart.js:213:13）\n在PartStream.emit（events.js:198:13）\n在PartStream.EventEmitter.emit（domain.js:448:20）\n在HeaderParser。（C:\\xampp\\htdocs\\myporn\\node\u modules\\dicer\\lib\\dicer.js:51:16）\n在HeaderParser.emit（events.js:198:13）\n在HeaderParser.EventEmitter.emit（domain.js:448:20）\n在HeaderParser.完成（C:\\xampp\\htdocs\\myporn\\node\u modules\\dicer\\lib\\HeaderParser.js:68:8）\n在SBMH。（C:\\xampp\\htdocs\\myporn\\node\u modules\\dicer\\lib\\HeaderParser.js:40:12）\n在SBMH.emit（events.js:198:13）\n在SBMH.EventEmitter.emit（domain.js:448:20）\n在SBMH.\u SBMH\u提要（C:\\xampp\\htdocs\\myporn\\node\u modules\\streamsearch\\lib\\SBMH.js:159:14）\n在SBMH.push（C:\\xampp\\htdocs\\myporn\\node\u modules\\streamsearch\\lib\\sbmh.js:56:14）\n在HeaderParser.push上（C:\\xampp\\htdocs\\myporn\\node\u modules\\dicer\\lib\\HeaderParser.js:46:19）\n在dicer上。\u oninfo（C:\\xampp\\htdocs\\myporn\\node\u modules\\dicer\\lib\\dicer.js:197:25）\n在sbmh上。（C:\\xampp\\htdocs\\myporn\\node\u modules\\dicer\\lib\\dicer.js:127:10）\n在SBMH.emit（events.js:198:13）\n在SBMH.EventEmitter.emit（domain.js:448:20）\n在SBMH.push的SBMH提要（C:\\xampp\\htdocs\\myporn\\node\u modules\\streamsearch\\lib\\SBMH.js:188:10）\n（C:\\xampp\\htdocs\\myporn\\node\u modules\\streamsearch\\lib\\sbmh.js:56:14）\n在Dicer写入（C:\\xampp\\htdocs\\myporn\\node\u modules\\Dicer\\lib\\Dicer.js:109:17）\n在doWrite（\u stream\u writeable.js:415:12）\n在writeOrBuffer（\u stream\u writeable.js:399:5）\n在Dicer.writeable.js:299:11）
}

该功能工作得很好，但只有当发送一个单一的文件，它可以是缩略图或视频链接，但不能两者兼而有之…我需要这两个领域的工作

有没有办法解决这个问题？

const s3=new AWS.s3({
  const s3 = new AWS.S3({
    accessKeyId: 'xxxxxxxxx',
    secretAccessKey: 'xxxxxxxxx'
});
  const uploadS3 = multer({

    storage: multerS3({
        s3: s3,
        acl: 'public-read',
        bucket: 'xxxxxxxx',
        metadata: (req, file, callBack) => {
            callBack(null, { fieldName: file.fieldname })
        },
        key: (req, file, callBack) => {
            var fullPath = 'products/' + file.originalname;//If you want to save into a folder concat de name of the folder to the path
            callBack(null, fullPath)
        }
    }),
    limits: { fileSize: 2000000 }, // In bytes: 2000000 bytes = 2 MB
    fileFilter: function (req, file, cb) {
        checkFileType(file, cb);
    }
}).array('photos', 10);


exports.uploadProductsImages = async (req, res) => {


    uploadS3(req, res, (error) => {
        console.log('files', req.files);
        if (error) {
            console.log('errors', error);
            res.status(500).json({
                status: 'fail',
                error: error
            });
        } else {
            // If File not found
            if (req.files === undefined) {
                console.log('uploadProductsImages Error: No File Selected!');
                res.status(500).json({
                    status: 'fail',
                    message: 'Error: No File Selected'
                });
            } else {
                // If Success
                let fileArray = req.files,
                    fileLocation;
                const images = [];
                for (let i = 0; i < fileArray.length; i++) {
                    fileLocation = fileArray[i].location;
                    console.log('filenm', fileLocation);
                    images.push(fileLocation)
                }
                // Save the file name into database
                return res.status(200).json({
                    status: 'ok',
                    filesArray: fileArray,
                    locationArray: images
                });

            }
        }
    })
};

accessKeyId:'xxxxxxxxx'，
secretAccessKey:'xxxxxxxxx'
});
const uploadS3=multer({
储存：multerS3({
s3:s3，
acl:“公共读取”，
桶：“xxxxxxxx”，
元数据：（请求、文件、回调）=>{
回调（null，{fieldName:file.fieldName}）
},
键：（请求、文件、回调）=>{
var fullPath='products/'+file.originalname；//如果要保存到文件夹中，请将文件夹的名称连接到路径
回调（空，完整路径）
}
}),
限制：{fileSize:2000000}，//字节数：2000000字节=2 MB
fileFilter：函数（请求、文件、cb）{
检查文件类型（文件，cb）；
}
}).阵列（“照片”，10）；
exports.uploadProductsImages=异步（请求、回复）=>{
上传3（请求、回复，（错误）=>{
console.log（'files'，req.files）；
如果（错误）{
console.log（'errors'，error）；
res.status（500）.json({
状态：“失败”，
错误：错误
});
}否则{
//如果找不到文件
如果（请求文件===未定义）{
log（'uploadProductsImages错误：未选择任何文件！'）；
res.status（500）.json({
状态：“失败”，
消息：“错误：未选择任何文件”
});
}否则{
//如果成功
让fileArray=req.files，
文件位置；
常量图像=[]；
for（设i=0；i



  const s3 = new AWS.S3({
    accessKeyId: 'xxxxxxxxx',
    secretAccessKey: 'xxxxxxxxx'
});
  const uploadS3 = multer({

    storage: multerS3({
        s3: s3,
        acl: 'public-read',
        bucket: 'xxxxxxxx',
        metadata: (req, file, callBack) => {
            callBack(null, { fieldName: file.fieldname })
        },
        key: (req, file, callBack) => {
            var fullPath = 'products/' + file.originalname;//If you want to save into a folder concat de name of the folder to the path
            callBack(null, fullPath)
        }
    }),
    limits: { fileSize: 2000000 }, // In bytes: 2000000 bytes = 2 MB
    fileFilter: function (req, file, cb) {
        checkFileType(file, cb);
    }
}).array('photos', 10);


exports.uploadProductsImages = async (req, res) => {


    uploadS3(req, res, (error) => {
        console.log('files', req.files);
        if (error) {
            console.log('errors', error);
            res.status(500).json({
                status: 'fail',
                error: error
            });
        } else {
            // If File not found
            if (req.files === undefined) {
                console.log('uploadProductsImages Error: No File Selected!');
                res.status(500).json({
                    status: 'fail',
                    message: 'Error: No File Selected'
                });
            } else {
                // If Success
                let fileArray = req.files,
                    fileLocation;
                const images = [];
                for (let i = 0; i < fileArray.length; i++) {
                    fileLocation = fileArray[i].location;
                    console.log('filenm', fileLocation);
                    images.push(fileLocation)
                }
                // Save the file name into database
                return res.status(200).json({
                    status: 'ok',
                    filesArray: fileArray,
                    locationArray: images
                });

            }
        }
    })
};