python - Python 电子邮件附件为空

Question

我正在尝试使用 Python 2.7 发送带有附件的电子邮件。除了附件内容外，一切正常，附件内容到达电子邮件时为0 K。

编码有问题吗？

def sendMail(subject, text, *attachmentFilePaths):
    gmailUser = USER
    gmailPassword = PASSWORD
    recipient = RECIPIENT

    msg = MIMEMultipart()
    msg['From'] = gmailUser
    msg['To'] = recipient
    msg['Subject'] = subject
    msg.attach(MIMEText(text))

    for attachmentFilePath in attachmentFilePaths:
        msg.attach(getAttachment(attachmentFilePath))

    mailServer = smtplib.SMTP('smtp.gmail.com', 587)
    mailServer.ehlo()
    mailServer.starttls()
    mailServer.ehlo()
    mailServer.login(gmailUser, gmailPassword)
    mailServer.sendmail(gmailUser, recipient, msg.as_string())
    mailServer.close()

    print('Sent email to %s' % recipient)

def getAttachment(attachmentFilePath):
    contentType, encoding = mimetypes.guess_type(attachmentFilePath)

    if contentType is None or encoding is not None:
        contentType = 'application/octet-stream'
    mainType, subType = contentType.split('/', 1)
    file = open(attachmentFilePath, 'rb')

    if mainType == 'text':
        attachment = MIMEText(file.read())
    elif mainType == 'message':
        attachment = email.message_from_file(file)
    elif mainType == 'image':
        attachment = MIMEImage(file.read(),_subType=subType)
    elif mainType == 'audio':
        attachment = MIMEAudio(file.read(),_subType=subType)
    else:
        attachment = MIMEBase(mainType, subType)

    attachment.set_payload(file.read())
    encode_base64(attachment)
    file.close()
    attachment.add_header('Content-Disposition', 'attachment',   filename=os.path.basename(attachmentFilePath))
    return attachment

Answer 1

这是你的问题：

if mainType == 'text':
    attachment = MIMEText(file.read())                      # <- read file
elif mainType == 'message':
    attachment = email.message_from_file(file)              # <- read file
elif mainType == 'image':
    attachment = MIMEImage(file.read(),_subType=subType)    # <- read file
elif mainType == 'audio':
    attachment = MIMEAudio(file.read(),_subType=subType)    # <- read file
else:
    attachment = MIMEBase(mainType, subType)

attachment.set_payload(file.read())           # <- re-read file !

这意味着除了在中else您将始终用空字符串替换有效负载，因为该文件已被读取。