Question

我使用以下格式上传图片文件：

var body = fs.createReadStream(tempPath).pipe(zlib.createGzip());
var s3obj = new AWS.S3({params: {Bucket: myBucket, Key: myKey}});
var params = {
  Body: body,
  ACL: 'public-read',
  ContentType: 'image/png'
};

s3obj.upload(params, function(err, data) {
  if (err) console.log("An error occurred with S3 fig upload: ", err);
  console.log("Uploaded the image file at: ", data.Location);
});

图像成功上传到我的S3存储桶（没有错误消息，我在S3控制台中看到它），但是当我尝试在我的网站上显示它时，它会返回一个损坏的img图标。当我使用S3-console文件下载程序下载图像时，我无法打开文件被“损坏或损坏”的错误。

如果我使用S3控制台手动上传文件，我可以在我的网站上正确显示它，所以我很确定我的上传方式有问题。

出了什么问题？

Answer 1

我最终找到了我的问题的答案。我需要再发布一个参数，因为该文件是gzip＆＃39; d（使用var body = ... zlib.createGzip()）。这解决了我的问题：

var params = {
  Body: body,
  ACL: 'public-read',
  ContentType: 'image/png',
  ContentEncoding: 'gzip'
};

Answer 2

这是一个非常好的节点模块s3-upload-stream，用于将图像上传（并首先压缩）到S3，这里的示例代码有很好的记录：

var AWS      = require('aws-sdk'),
    zlib     = require('zlib'),
    fs       = require('fs');
    s3Stream = require('s3-upload-stream')(new AWS.S3()),

// Set the client to be used for the upload. 
AWS.config.loadFromPath('./config.json');
// or do AWS.config.update({accessKeyId: 'akid', secretAccessKey: 'secret'});

// Create the streams 
var read = fs.createReadStream('/path/to/a/file');
var compress = zlib.createGzip();
var upload = s3Stream.upload({
  "Bucket": "bucket-name",
  "Key": "key-name"
});

// Optional configuration 
upload.maxPartSize(20971520); // 20 MB 
upload.concurrentParts(5);

// Handle errors. 
upload.on('error', function (error) {
  console.log(error);
});

/* Handle progress. Example details object:
   { ETag: '"f9ef956c83756a80ad62f54ae5e7d34b"',
     PartNumber: 5,
     receivedSize: 29671068,
     uploadedSize: 29671068 }
*/
upload.on('part', function (details) {
  console.log(details);
});

/* Handle upload completion. Example details object:
   { Location: 'https://bucketName.s3.amazonaws.com/filename.ext',
     Bucket: 'bucketName',
     Key: 'filename.ext',
     ETag: '"bf2acbedf84207d696c8da7dbb205b9f-5"' }
*/
upload.on('uploaded', function (details) {
  console.log(details);
});

// Pipe the incoming filestream through compression, and up to S3. 
read.pipe(compress).pipe(upload);

为什么我的S3上传无法正确上传？

2 个答案: