Question

我一直在使用python中的电子邮件模块，但我希望能够知道如何嵌入包含在html中的图像。

因此，例如，如果身体是

<img src="../path/image.png"></img>

我想将 image.png 嵌入到电子邮件中，src属性应替换为content-id。有人知道怎么做吗？

Answer 1

这是我找到的一个例子。

Recipe 473810: Send an HTML email with embedded image and plain text alternate：

HTML是那些选择的方法   希望发送带有丰富文本的电子邮件，   布局和图形。通常是   希望将图形嵌入其中   收件人可以显示的消息   消息直接，没有进一步   下载。

某些邮件代理不支持HTML或   他们的用户更喜欢接收普通   短信。 HTML的发件人   消息应包含纯文本   消息作为这些的替代   用户。

此配方发送一条简短的HTML消息   使用单个嵌入图像和   替代纯文本消息。

# Send an HTML email with an embedded image and a plain text message for
# email clients that don't want to display the HTML.

from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText
from email.MIMEImage import MIMEImage

# Define these once; use them twice!
strFrom = 'from@example.com'
strTo = 'to@example.com'

# Create the root message and fill in the from, to, and subject headers
msgRoot = MIMEMultipart('related')
msgRoot['Subject'] = 'test message'
msgRoot['From'] = strFrom
msgRoot['To'] = strTo
msgRoot.preamble = 'This is a multi-part message in MIME format.'

# Encapsulate the plain and HTML versions of the message body in an
# 'alternative' part, so message agents can decide which they want to display.
msgAlternative = MIMEMultipart('alternative')
msgRoot.attach(msgAlternative)

msgText = MIMEText('This is the alternative plain text message.')
msgAlternative.attach(msgText)

# We reference the image in the IMG SRC attribute by the ID we give it below
msgText = MIMEText('<b>Some <i>HTML</i> text</b> and an image.<br><img src="cid:image1"><br>Nifty!', 'html')
msgAlternative.attach(msgText)

# This example assumes the image is in the current directory
fp = open('test.jpg', 'rb')
msgImage = MIMEImage(fp.read())
fp.close()

# Define the image's ID as referenced above
msgImage.add_header('Content-ID', '<image1>')
msgRoot.attach(msgImage)

# Send the email (this example assumes SMTP authentication is required)
import smtplib
smtp = smtplib.SMTP()
smtp.connect('smtp.example.com')
smtp.login('exampleuser', 'examplepass')
smtp.sendmail(strFrom, strTo, msgRoot.as_string())
smtp.quit()

Answer 2

适用于Python 3.4及以上版本。

接受的答案非常好，但仅适用于较旧的Python版本（2.x和3.3）。我认为它需要更新。

以下是如何在较新的Python版本（3.4及更高版本）中执行此操作：

from email.message import EmailMessage
from email.utils import make_msgid
import mimetypes

msg = EmailMessage()

# generic email headers
msg['Subject'] = 'Hello there'
msg['From'] = 'ABCD <abcd@xyz.com>'
msg['To'] = 'PQRS <pqrs@xyz.com>'

# set the plain text body
msg.set_content('This is a plain text body.')

# now create a Content-ID for the image
image_cid = make_msgid(domain='xyz.com')
# if `domain` argument isn't provided, it will 
# use your computer's name

# set an alternative html body
msg.add_alternative("""\
<html>
    <body>
        <p>This is an HTML body.<br>
           It also has an image.
        </p>
        <img src="cid:{image_cid}">
    </body>
</html>
""".format(image_cid=image_cid[1:-1]), subtype='html')
# image_cid looks like <long.random.number@xyz.com>
# to use it as the img src, we don't need `<` or `>`
# so we use [1:-1] to strip them off


# now open the image and attach it to the email
with open('path/to/image.jpg', 'rb') as img:

    # know the Content-Type of the image
    maintype, subtype = mimetypes.guess_type(img.name)[0].split('/')

    # attach it
    msg.get_payload()[1].add_related(img.read(), 
                                         maintype=maintype, 
                                         subtype=subtype, 
                                         cid=image_cid)


# the message is ready now
# you can write it to a file
# or send it using smtplib

Answer 3

代码正常工作

    att = MIMEImage(imgData)
    att.add_header('Content-ID', f'<image{i}.{imgType}>')
    att.add_header('X-Attachment-Id', f'image{i}.{imgType}')
    att['Content-Disposition'] = f'inline; filename=image{i}.{imgType}'
    msg.attach(att)

发送包含嵌入图像的Multipart html电子邮件

3 个答案: