Rails:使用带有附件的Gmail API发送电子邮件，仅返回编码文件 [英] Rails: Send email using Gmail API with attachment return only encoded file not

问题描述

我正在尝试使用gmail API发送电子邮件.您可以在下面看到的我的Ruby代码在没有附件的情况下也能很好地工作:

I am trying to send an email using gmail API. My Ruby code as you can see below works well without an attachment:

client = google_client user_id
token = Token.find_by_user_id(user_id)
access_token = token.access_token
gmail = Google::Apis::GmailV1::GmailService.new
gmail.authorization = client
message              = Mail.new
message.date         = Time.now
message.subject      = 'Supertram p'
message.body         = "<p>Hi Alex, how's life?</p>"
message.content_type = 'text/html'
message.from         = self.email
message.to           = '[e-mail]'

msg = message.encoded
message_object = Google::Apis::GmailV1::Message.new(raw:message.to_s)
gmail.send_user_message('me', message_object)

我能够成功发送html格式的电子邮件. 我的问题是如何在此邮件中附加文件?

I was able to successfully send emails in html format. My question is how to attach a file to this message?

client = google_client user_id
token = Token.find_by_user_id(user_id)
access_token = token.access_token
gmail = Google::Apis::GmailV1::GmailService.new
gmail.authorization = client
message              = Mail.new
message.date         = Time.now
message.subject      = 'Supertramp'
message.body         = "<p>Hi Alex, how's life?</p>"
# message.content_type = 'text/html'
message.from         = self.email
message.to           = '[e-mail]'
message.add_file("/Users/myname/Downloads/image.png")

msg = message.encoded
message_object = Google::Apis::GmailV1::Message.new(raw:message.to_s)
gmail.send_user_message('me', message_object)

但这是我收到的消息:

-内容类型:文本/纯文本； charset = UTF-8 Content-Transfer-Encoding:7bit Alex，生活如何?

-- Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Alex, how's life?

-内容类型:image/png; filename = image.png Content-Transfer-Encoding:base64 Content-Disposition:附件； filename = image.png内容ID: < [e-mail]> iVBORw0KGgoAAAANSUhEUgAAAfAAAABMCAYAAACS0 + VcAAAX9UlEQVR4Ae2d XWxj1bXH/6lKK + D1VE1oKEa6CPNwpQh4SFBapYOrIoGUuRnN6IRR25HuC1C/ AC8JDMiFGTlP8 [...] == ----

-- Content-Type: image/png; filename=image.png Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename=image.png Content-ID: <[e-mail]> iVBORw0KGgoAAAANSUhEUgAAAfAAAABMCAYAAACS0+VcAAAX9UlEQVR4Ae2d XWxj1bXH/6lKK+D1VE1oKEa6CPNwpQh4SFBapYOrIoGUuRnN6IRR25HuC1C/ AC8JDMiFGTlP8 [...] == ----

我只收到一个编码字符串，但没有收到附件. 我的问题是如何通过带有附件的Gmail API发送电子邮件?

I only receive an encoded string, but not an attached file. My question is how to send an email by Gmail API with an attachment?

推荐答案

我认为您在附件方面缺少某些东西

I think you are missing somethings with regard to the attacment

message              = Mail.new
message.date         = Time.now
message.subject      = 'Test Email'
message.body         = "<p>Hi Test, how's life?</p>"
message.content_type = 'text/html'
message.from         = "Test User <[e-mail]>"
message.to           = '[e-mail]'

service = client.discovered_api('gmail', 'v1')

result = client.execute(
  api_method: service.users.messages.to_h['gmail.users.messages.send'],
  body_object: {
    raw: Base64.urlsafe_encode64(message.to_s)
  },
  parameters:  {
    userId: '[e-mail]'
  },
    headers:   { 'Content-Type' => 'application/json' }
)

response = JSON.parse(result.body)

对于带有附件的多部分电子邮件:

For multi-part email with the attachment:

message         = Mail.new
message.date    = Time.now
message.subject = 'Supertramp'
message.from    = "testone <[e-mail]>"
message.to      = '[e-mail]'

message.part content_type: 'multipart/alternative' do |part|
  part.html_part = Mail::Part.new(body: "<p>Hi TEst, how's life?</p>", content_type: 'text/html; charset=UTF-8')
  part.text_part = Mail::Part.new(body: "Hi test, how's life?")
end

open('http://google.com/image.jpg') do |file| 
  message.attachments['image.jpg'] = file.read 
end

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