Question

我有问题。我正在尝试使用gmail api从gmail阅读电子邮件。我按照https://developers.google.com/gmail/api/v1/reference/users/messages/get

的说明进行操作

我做了一些更改，在python 3上运行它，所以我最终得到了以下代码：

def GetMimeMessage(service, user_id, msg_id):
try:
  message = service.users().messages().get(userId=user_id, id=msg_id,
                                         format='raw').execute()

  print ('Message snippet: %s' % message['snippet'])
  msg_str = base64.urlsafe_b64decode(message['raw'].encode('utf8'))
  mime_msg = email.message_from_bytes(msg_str)
  print(mime_msg)

  return mime_msg
except errors.HttpError as error:
  print ('An error occurred: %s' % error)

现在输出非常接近我想要的，但是输出中的匈牙利重音字符有一个问题很奇怪： G=C3=A1bor代替Gábor

而且html标签也有点破碎：

Follow us:          =09=09=09=09=09=09=09=09=09<a href=3D"http=

我已经发现这与邮件的编码方式有关，请参阅邮件标题：

Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

问题是，我似乎无法找到正确解码的方法。永远的帮助表示赞赏。

Answer 1

经过数小时的自我解决，我终于找到了解决方案（至少对于我的情况而言）。即使线程很旧，我也将其发布在这里，以便其他人以后可以找到它。在这里：

# Get your message
message = service.users().messages().get(userId=user_id, id=msg_id, format='full').execute()

# Get the right body data item (this part was my Heureka-moment as there are several 'data' keys)
content = message['payload']['parts'][0]['parts'][1]['body']['data']

# Encode
msg_body = base64.urlsafe_b64decode(content).decode('utf-8')

这个序列使解码/编码对我有用。有许多不同的解决方案建议，还有关于base64和Google Gmail API的解码/编码问题的线索，但每种情况似乎都是唯一的。希望此解决方案也对您有所帮助！

Answer 2

感谢Tuppitappi。适用于Python的Gmail API文档可能会更清晰一些。以上解决方案对我也适用。我可以通过以下方式检索内容：

 msgs = message['payload']['parts']
 msg = msgs[1]['body']['data']

MessagePart可能包含不同的部分：

"parts": [
      {
        "partId": "0",
        "mimeType": "text/plain",
        "filename": "",
        "headers": [
          { "name": "Content-type", "value": "text/plain;charset=utf-8" },
          { "name": "Content-Transfer-Encoding", "value": "quoted-printable" }
        ],
        "body": {
          "size": 1887,
          "data": "ascii string to be decoded"
        }
      },
      {
        "partId": "1",
        "mimeType": "text/html",
        "filename": "",
        "headers": [
          { "name": "Content-type", "value": "text/html;charset=utf-8" },
          { "name": "Content-Transfer-Encoding", "value": "quoted-printable" }
        ],
        "body": {
          "size": 66970,
          "data": "longer ascii string to be decoded"
        }
      }
    ]

从Doc中提取全部有效载荷：

Resource representations An email message.

{   "id": string,   "threadId": string,   "labelIds": [
    string   ],   "snippet": string,   "historyId": unsigned long,   "internalDate": long,   "payload": {
    "partId": string,
    "mimeType": string,
    "filename": string,
    "headers": [
      {
        "name": string,
        "value": string
      }
    ],
    "body": users.messages.attachments Resource,
    "parts": [
      (MessagePart)
    ]   },   "sizeEstimate": integer,   "raw": bytes }

Gmail api python编码/解码错误

2 个答案: