使用python发送消息时出现错误400

我正在尝试使用Gmail API发送电子邮件.我已经成功通过身份验证,并且在我的机器上有一个client_secret.json文件.
我已经可以使用Gmail API网站上的快速入门示例获取标签列表

我已成功将范围重置为

SCOPES = 'https://mail.google.com'

允许完全访问我的Gmail帐户.

我有一个从here和here编译的python脚本.请参见下文.执行脚本时,出现以下错误消息：

An error occurred: https://www.googleapis.com/gmail/v1/users/me/messages/send?alt=json returned “‘raw’ RFC822 payload message string or uploading message via /upload/* URL required”>

关于我在做什么错以及如何解决的任何想法？

from __future__ import print_function
import argparse
import time
from time import strftime, localtime
import os

import base64
import os
import httplib2
from httplib2 import Http

from apiclient import errors
from apiclient import discovery

import oauth2client
from oauth2client import file, client, tools

SCOPES = 'https://mail.google.com'
CLIENT_SECRET_FILE = 'client_secret.json'
store = file.Storage('storage.json')
credentials = store.get()
if not credentials or credentials.invalid:
    flags = argparse.ArgumentParser(parents=[tools.argparser]).parse_args()
    flow = client.flow_from_clientsecrets('client_secret.json', SCOPES)
    credentials = tools.run_flow(flow, store, flags)

def get_credentials():
    """Gets valid user credentials from storage.

    If nothing has been stored, or if the stored credentials are invalid,
    the OAuth2 flow is completed to obtain the new credentials.

    Returns:
        Credentials, the obtained credential.
    """
    home_dir = os.path.expanduser('~')
    credential_dir = os.path.join(home_dir, '.credentials')
    if not os.path.exists(credential_dir):
        os.makedirs(credential_dir)
    credential_path = os.path.join(credential_dir,
        'gmail-python-quickstart.json')

    store = oauth2client.file.Storage(credential_path)
    credentials = store.get()
    if not credentials or credentials.invalid:
        flow = client.flow_from_clientsecrets(CLIENT_SECRET_FILE, SCOPES)
        flow.user_agent = APPLICATION_NAME
        if flags:
            credentials = tools.run_flow(flow, store, flags)
        else: # Needed only for compatibility with Python 2.6
            credentials = tools.run(flow, store)
        print('Storing credentials to ' + credential_path)
    return credentials


def send_message(service, user_id, message):
  """Send an email message.

  Args:
    service: Authorized Gmail API service instance.
    user_id: User's email address. The special value "me"
    can be used to indicate the authenticated user.
    message: Message to be sent.

  Returns:
    Sent Message.
  """
  try:
      message = (service.users().messages().send(userId=user_id, body=message)
                 .execute())
      print ('Message Id: %s' % message['id'])
      return message
  except errors.HttpError, error:
      print ('An error occurred: %s' % error)


def main():
    credentials = get_credentials()
    http = credentials.authorize(httplib2.Http())
    service = discovery.build('gmail', 'v1', http=http)
    send_message(service, 'me','test message')


main()

解决方法:

必须像Sending Email指南中概述的那样创建一条消息：

def create_message(sender, to, subject, message_text):
  message = MIMEText(message_text)
  message['to'] = to
  message['from'] = sender
  message['subject'] = subject
  return {'raw': base64.urlsafe_b64encode(message.as_string())}

def main():
  credentials = get_credentials()
  http = credentials.authorize(httplib2.Http())
  service = discovery.build('gmail', 'v1', http=http)
  message = create_message(
    'sender@gmail.com', 'receiver@gmail.com', 'Subject', 'Message text'
  )
  send_message(service, 'me', message)

标签：raspberry-pi,gmail-api,python
来源： https://codeday.me/bug/20191026/1939076.html