使用适用于 Ruby 的 AWS 开发工具包上传对象

适用于 Ruby 的 AWS 开发工具包（版本 3）通过两种方式将对象上传到 Amazon S3。第一种方式使用托管的文件上传程序，从而能轻松从磁盘上传任何大小的文件。使用托管文件上传程序方法：

1. 创建 Aws::S3::Resource 类的实例。

2. 按存储桶名称和键引用目标对象。位于存储桶中的对象具有可识别每个对象的唯一密钥。

3. 在对象上调用 #upload_file。

require 'aws-sdk-s3'

# Uploads an object to a bucket in Amazon Simple Storage Service (Amazon S3).
#
# Prerequisites:
#
# - An S3 bucket.
# - An object to upload to the bucket.
#
# @param s3_client [Aws::S3::Resource] An initialized S3 resource.
# @param bucket_name [String] The name of the bucket.
# @param object_key [String] The name of the object.
# @param file_path [String] The path and file name of the object to upload.
# @return [Boolean] true if the object was uploaded; otherwise, false.
# @example
#   exit 1 unless object_uploaded?(
#     Aws::S3::Resource.new(region: 'us-east-1'),
#     'doc-example-bucket',
#     'my-file.txt',
#     './my-file.txt'
#   )
def object_uploaded?(s3_resource, bucket_name, object_key, file_path)
  object = s3_resource.bucket(bucket_name).object(object_key)
  object.upload_file(file_path)
  return true
rescue StandardError => e
  puts "Error uploading object: #{e.message}"
  return false
end

适用于 Ruby 的 AWS 开发工具包（版本 3）上传对象的第二种方式是使用 Aws::S3::Object 的 #put 方法。如果对象为字符串或者为不是磁盘上的文件的 I/O 对象，此方式很有用。要使用此方法，请执行以下操作：

1. 创建 Aws::S3::Resource 类的实例。

2. 按存储桶名称和键引用目标对象。

3. 调用 #put，从而传入字符串或 I/O 对象。

require 'aws-sdk-s3'

# Uploads an object to a bucket in Amazon Simple Storage Service (Amazon S3).
#
# Prerequisites:
#
# - An S3 bucket.
# - An object to upload to the bucket.
#
# @param s3_client [Aws::S3::Resource] An initialized S3 resource.
# @param bucket_name [String] The name of the bucket.
# @param object_key [String] The name of the object.
# @param file_path [String] The path and file name of the object to upload.
# @return [Boolean] true if the object was uploaded; otherwise, false.
# @example
#   exit 1 unless object_uploaded?(
#     Aws::S3::Resource.new(region: 'us-east-1'),
#     'doc-example-bucket',
#     'my-file.txt',
#     './my-file.txt'
#   )
def object_uploaded?(s3_resource, bucket_name, object_key, file_path)
  object = s3_resource.bucket(bucket_name).object(object_key)
  File.open(file_path, 'rb') do |file|
    object.put(body: file)
  end
  return true
rescue StandardError => e
  puts "Error uploading object: #{e.message}"
  return false
end