将文件上传到 S3 预签名 URL

Question

我正在尝试将本地文件上传到 S3 预签名 URL。它应该非常简单，但看起来我错过了一些东西。

http://docs.aws.amazon.com/AmazonS3/latest/dev/PresignedUrlUploadObject.html

示例：

ENV['RESTCLIENT_LOG'] = "stdout"
require 'aws-sdk'
require 'rest_client'

s3_object_key = "folder-name/file.zip"

AWS.config(access_key_id: 'xxx', secret_access_key: 'xx')
s3 = AWS::S3.new
bucket = s3.buckets['my-bucket-name']
s3_object = bucket.objects[s3_object_key]

upload_url = s3_object.url_for(:put, expires: 100000).to_s

RestClient.put(upload_url, file: File.new("local-file.zip"))

日志：

RestClient.put "https://s3.amazonaws.com/my-bucket-name/folder-name/file.zip?AWSAccessKeyId=xxx&Expires=xxx&Signature=xxx", 246572 byte(s) length, "Accept"=>"*/*; q=0.5, application/xml", "Accept-Encoding"=>"gzip, deflate", "Content-Length"=>"246572", "Content-Type"=>"multipart/form-data; boundary=183013"

回应：

/Users/dev/.rbenv/versions/2.1.1/lib/ruby/2.1.0/openssl/buffering.rb:326:in `syswrite': Broken pipe (Errno::EPIPE)
    from /Users/dev/.rbenv/versions/2.1.1/lib/ruby/2.1.0/openssl/buffering.rb:326:in `do_write'
    from /Users/dev/.rbenv/versions/2.1.1/lib/ruby/2.1.0/openssl/buffering.rb:344:in `write'

任何帮助将不胜感激。

Answer 1

用PresignedPost怎么样

form = bucket.presigned_post(:key => "photos/${filename}")
form.url.to_s        # => "https://mybucket.s3.amazonaws.com/"
form.fields          # => { "AWSAccessKeyId" => "...", ... }
form.url             # your signed url

Answer 2

您不能简单地 PUT S3 上的文件。使用write API 来做到这一点：

s3_object.write(:file => "local-file.zip")