如何在Google App Engine中从InboundMailHandler读取电子邮件(自定义)标头和附件

问题描述

如何在Google App Engine中阅读电子邮件标题.我正在尝试在Google中搜索，但找不到任何有效的示例.

How to read email header in Google App Engine. I am trying to search in google, but can't find any good and working example.

推荐答案

此处是答案.
文件:app.yaml
(您将发送电子邮件到 [email protected] )

here the answer.
File: app.yaml
(you will send email to [email protected])

application: myapp
version: 1
runtime: python27
api_version: 1
threadsafe: yes

handlers:    
- url: /_ah/mail/mymail@myapp\.appspotmail\.com
  script: mail.app
  login: admin

- url: .*
  script: main.app

libraries:
- name: webapp2
  version: "2.5.1"

inbound_services:
- mail

假设您的应用收到了一封电子邮件，这是电子邮件标题的一部分:

Assuming your app received an email, and this is part of the email headers:

...
MIME-Version: 1.0
Received: by 10.220.68.18 with HTTP; Tue, 30 Oct 2012 21:18:18 -0700 (PDT)
Date: Wed, 31 Oct 2012 12:18:18 +0800
Message-ID: <CA+aGk47FkztZR3jUfrG=[e-mail]>
Subject: Butter cake receipe
From: Someone somebody <[email protected]>
To: Danny Hong <[email protected]>
Content-Type: multipart/alternative; boundary=bcaxec5y19610f36df7204cd5331cd
X-Gm-Message-State: ALoCoQmzPBg3OYwtkdO5pUbNI5Zk+v2Qa42P5E6lWRzCiVUPBNsHbmSOJoBir2UfsUdq7vZLYnUOsHg
...

文件:mail.py

import logging
import webapp2
from google.appengine.ext.webapp.mail_handlers import InboundMailHandler

class MailHandle(InboundMailHandler):
  def receive(self, mail_message):

    #Read headers    
    buf = mail_message.original.get('MIME-Version')
    logging.info("I get: %s" % buf)
    # output: i get: 2.0

    buf = mail_message.original.get('Message-ID')
    logging.info("I get: %s" % buf)
    # output: i get: <CA+aGk47FkztZR3jUfrG=[e-mail]>

    buf = mail_message.original.get('X-Gm-Message-State')
    logging.info("I get: %s" % buf)
    # output: i get: ALoCoQmzPBg3OYwtkdO5pUbNI5Zk+v2Qa42P5E6lWRzCiVUPBNsHbmSOJoBir2UfsUdq7vZLYnUOsHg

    buf = mail_message.original.get('Subject', 'no subject')
    logging.info("I get: %s" % buf)
    # output: i get: Butter cake receipe

    buf = mail_message.original.get('something-else','no such header')
    logging.info("I get: %s" % buf)
    # output: i get: no such header

    # Looping and getting attachments...
    if hasattr(mail_message,'attachments'):
      for fn, att in mail_message.attachments:
        logging.info("Attachment filename is %s" % fn)
        # output: Attachment file is <filename.xxx>
        logging.info("Attactment data in blob %s" % att.decode())
        # output: Attachment data in blob <binary>

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