javascript - 上传后从AWS S3获取上传的文件

Question

考虑代码:

    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!');
    });

如何获取用户在 Node 上传成功上传到存储桶后在 Node 中上传的文件？

文件上传后我需要对其进行一些操作。

Answer 1

成功上传文件后，它会返回一个网址。通过该 url，您可以检索已上传的文件。然后就可以使用nodejs函数fs.readFileSync(file path)来读取文件了。