使用 multer-s3 nodejs 将图像上传到亚马逊 s3
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Uploading image to amazon s3 using multer-s3 nodejs
提问by mBlaze
I am trying to upload an image to amazon s3 using multer-s3, but I am getting this error:
我正在尝试使用 将图像上传到 amazon s3 multer-s3，但出现此错误：
TypeError: Expected opts.s3 to be object node_modules/multer-s3/index.js:69:20
类型错误：预期 opts.s3 为对象 node_modules/multer-s3/index.js:69:20
This is my server code:
这是我的服务器代码：
var upload = multer({
storage: s3({
dirname: '/',
bucket: 'bucket',
secretAccessKey: 'key',
accessKeyId: 'key',
region: 'us-west-2',
filename: function (req, file, cb) {
cb(null, file.originalname);
}
})
});
app.post('/upload', upload.array('file'), function (req, res, next) {
res.send("Uploaded!");
});
Why I am getting this error?
为什么我收到这个错误？
回答by Zeeshan Hassan Memon
Completeand working Node Cheat | Upload to s3 using multer-s3available.
完整且有效的节点作弊| 使用可用的multer-s3上传到s3。
Code:
代码：
var express = require('express'),
aws = require('aws-sdk'),
bodyParser = require('body-parser'),
multer = require('multer'),
multerS3 = require('multer-s3');
aws.config.update({
secretAccessKey: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
accessKeyId: 'XXXXXXXXXXXXXXX',
region: 'us-east-1'
});
var app = express(),
s3 = new aws.S3();
app.use(bodyParser.json());
var upload = multer({
storage: multerS3({
s3: s3,
bucket: 'bucket-name',
key: function (req, file, cb) {
console.log(file);
cb(null, file.originalname); //use Date.now() for unique file keys
}
})
});
//open in browser to see upload form
app.get('/', function (req, res) {
res.sendFile(__dirname + '/index.html');//index.html is inside node-cheat
});
//use by upload form
app.post('/upload', upload.array('upl',1), function (req, res, next) {
res.send("Uploaded!");
});
app.listen(3000, function () {
console.log('Example app listening on port 3000!');
});
For complete repo:
对于完整的回购：
Clone node-cheat express_multer_s3, run node appfollowed by npm install express body-parser aws-sdk multer multer-s3.
克隆节点作弊express_multer_s3，node app然后运行npm install express body-parser aws-sdk multer multer-s3.
Happy Helping!
乐于助人！
回答by Anjum....
@V31 has answered very well still I want to add my 2 cents.
@V31 回答得很好，我仍然想加我的 2 美分。
I believe in keeping one responsibility into one file, for better code organization and debugging purpose.
我相信将一个责任放在一个文件中，以便更好地组织代码和调试。
I have created a file for uploading upload.js.
我创建了一个用于上传的文件upload.js。
require('dotenv').config();
const AWS = require('aws-sdk');
const multer = require('multer');
const multerS3 = require('multer-s3');
const s3Config = new AWS.S3({
accessKeyId: process.env.AWS_IAM_USER_KEY,
secretAccessKey: process.env.AWS_IAM_USER_SECRET,
Bucket: process.env.AWS_BUCKET_NAME
});
const fileFilter = (req, file, cb) => {
if (file.mimetype === 'image/jpeg' || file.mimetype === 'image/png') {
cb(null, true)
} else {
cb(null, false)
}
}
// this is just to test locally if multer is working fine.
const storage = multer.diskStorage({
destination: (req, res, cb) => {
cb(null, 'src/api/media/profiles')
},
filename: (req, file, cb) => {
cb(null, new Date().toISOString() + '-' + file.originalname)
}
})
const multerS3Config = multerS3({
s3: s3Config,
bucket: process.env.AWS_BUCKET_NAME,
metadata: function (req, file, cb) {
cb(null, { fieldName: file.fieldname });
},
key: function (req, file, cb) {
console.log(file)
cb(null, new Date().toISOString() + '-' + file.originalname)
}
});
const upload = multer({
storage: multerS3Config,
fileFilter: fileFilter,
limits: {
fileSize: 1024 * 1024 * 5 // we are allowing only 5 MB files
}
})
exports.profileImage = upload;
Which is imported inside my routes routes.js
这是在我的路线中导入的 routes.js
const express = require('express');
const ProfileController = require('../profile/controller');
const { profileImage } = require('../utils/upload.js');
const routes = (app) => {
const apiRoutes = express.Router();
apiRoutes.use('/profile', profileRoutes);
profileRoutes.post('/',profileImage.single('profileImage'), ProfileController.saveProfile);
app.use('/api', apiRoutes);
}
module.exports = routes
Postman screen shot for post body
Postman 帖子正文的屏幕截图
回答by V31
s3needs to be an object to be passed. According to the docs, the object needs to be like this:
s3需要是要传递的对象。根据文档，对象需要是这样的：
var upload = multer({
storage: multerS3({
s3: s3,
bucket: 'some-bucket',
metadata: function (req, file, cb) {
cb(null, {fieldName: file.fieldname});
},
key: function (req, file, cb) {
cb(null, Date.now().toString())
}
})
})
回答by Hassan Masood
/*** Using Multer To Upload Image image is uploading */
/*** 使用 Multer 上传图片 图片正在上传 */
const fileStorage = multer.diskStorage({
destination: function(req, file, cb) {
cb(null, "./public/uploads");
},
filename: function(req, file, cb) {
cb(null, file.originalname);
}
});
/** AWS catalog */
aws.config.update({
secretAccessKey: process.env.SECRET_KEY,
accessKeyId: process.env.ACCESS_KEY,
region: "us-east-1"
});
const s3 = new aws.S3();
const awsStorage = multerS3({
s3: s3,
bucket: process.env.BUCKET_NAME,
key: function(req, file, cb) {
console.log(file);
cb(null, file.originalname);
}
});
const upload = multer({
storage: awsStorage(),
/** in above line if you are using local storage in ./public/uploads folder than use
******* storage: fileStorage,
* if you are using aws s3 bucket storage than use
******* storage: awsStorage(),
*/
limits: { fileSize: 5000000 },
fileFilter: function(req, file, cb) {
checkFileType(file, cb);
}
});
app.post("/user-profile-image", upload.single("profile"), (req, res, err) => {
try {
res.send(req.file);
} catch (err) {
res.send(400);
}
});
const checkFileType = (file, cb) => {
const filetypes = /jpeg|jpg|png|gif/;
const extname = filetypes.test(path.extname(file.originalname).toLowerCase());
const mimetype = filetypes.test(file.mimetype);
if (mimetype && extname) {
return cb(null, true);
} else {
cb("Error: Images Only!");
}
};
回答by web_developer
I was passing S3 to mutler in caps, like
我把 S3 大写地传递给 mutler，就像
S3: {object}
Changing it to small s3 works for me:-
将其更改为小型 s3 对我有用：-
s3: {object}
