Gmail API无法获取电子邮件数据 [英] Gmail API cannot get email data

问题描述

我正在尝试使用gmail API打印电子邮件:

I am trying to print my email messages using the gmail API:

results = service.users().messages().list(userId='me',labelIds = ['INBOX']).execute()

messages = results.get('messages', [])

if not messages:
    print("No messages found.")
else:
    count = 0 
    for message in messages:
        count += 1

        msg = service.users().messages().get(userId='me', id=message['id']).execute()

        full_msg = base64.urlsafe_b64decode(msg['payload']['body']['data'].encode("ASCII")).decode("utf-8")
        print("Email {}: {}".format(count, full_msg))

它正确打印了第一封电子邮件，但是在第二封for循环中，我得到了'data'的 KeyError .如果我尝试通过执行 print(msg ['snippet'])打印每封电子邮件的代码段，则效果很好.

It prints the first email properly, but on the second for loop I get a KeyError for 'data'. If I try to print the snippet of each email by doing print(msg['snippet']), it works fine.

推荐答案

msg ['payload'] ['body'] ['data'] 会返回电子邮件附件，但不是每封邮件有附件.

msg['payload']['body']['data'] returns you the email attachment, but not every message has an attachment.

• 如果要在附件存在的地方进行检索，请执行条件语句以验证 msg ['payload'] ['body'] ['size'] 在继续进行解码和打印之前不等于 0
• 如果要检索邮件正文内容而不是附件，则可以按照文档中的说明进行操作

• If you want to retrieve the attachment where it exists - implement a conditional statement to verify either msg['payload']['body']['size'] is not equal to 0 before proceeding with decoding and printing
• If you want retrieve the message body content instead of the attachment, you can do it as specified in the documentation

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