如何在 Ruby 中使用 Gmail API 回复邮件？

问题描述

我已经使用我的 Ruby on Rails 项目配置了 Google Api。另外，我为传入的电子邮件设置了 webhook。 我已成功实现通过 Google 登录并获取用户的收件箱消息。

现在，我正在实施消息回复，但收到“BadRequest”作为响应。

我的代码。

uri = URI.parse("https://www.googleapis.com/gmail/v1/users/me/messages/send?access_token=#{access_token}")
          request = Net::HTTP::Post.new(uri)
          request.content_type = "application/json"
          request.body = JSON.dump({
              "References" => "\u003cCAAY2B8p2CjEjDKz+sXVBQBrda5i5Lz=[e-mail]\u003e","In-Reply-To" => "\u003cCAAY2B8p2CjEjDKz+sXVBQBrda5i5Lz=[e-mail]\u003e","Subject" => "Re: Test02","From" => "[email protected]","To" => "[email protected]","threadId"=> "1764cc4c5efa6855",# "body" => "This is where the response text will go"
          })

          req_options = {
            use_ssl: uri.scheme == "https",}

          response = Net::HTTP.start(uri.hostname,uri.port,req_options) do |http|
            http.request(request)
          end

API 调用响应。

response =>  #<Net::HTTPBadRequest 400 Bad Request readbody=true>

我需要使用 Google Api 发送回复。

提前致谢。

解决方法

为了使用 Google API 回复消息，我使用了这种方法。

client_secrets = Google::APIClient::ClientSecrets.load("#{Rails.root}/config/client_secrets.json")
      auth_client = client_secrets.to_authorization
      auth_client.update!(
        :scope => 'https://mail.google.com/ https://www.googleapis.com/auth/gmail.modify https://www.googleapis.com/auth/gmail.readonly https://www.googleapis.com/auth/pubsub',:redirect_uri => 'http://localhost:3000/google_code',:additional_parameters => {
          "access_type" => "offline",# offline access
          "include_granted_scopes" => "true"  # incremental auth
        }
      )

      auth_client.code = auth_code

        gmail = Google::Apis::GmailV1::GmailService.new
        
          gmail.authorization = auth_client

          message              = Mail.new
          message.date         = Time.now
          message.subject      = "Re: Test02" 
          message.from         = "[email protected]"
          message.to           = "[email protected]"
          message.message_id   = "\[e-mail]\u003e"

          message.part content_type: 'multipart/alternative' do |part|
              part.html_part = Mail::Part.new(body: "Using service Account.",content_type: 'text/html; charset=UTF-8')
          end

          msg = message.encoded
            
          message_object = Google::Apis::GmailV1::Message.new(raw:message.to_s,thread_id: "1764cc4c5efa6855",content_type: 'message/rfc822')
          
          gmail.send_user_message('me',message_object)