Python 电子邮件中的Base64编码图像
我正在尝试使用gmail api和python发送html电子邮件，其中嵌入了base64编码的图像 这是我想通过电子邮件发送的html文件Python 电子邮件中的Base64编码图像,python,html,email,mime,gmail-api,Python,Html,Email,Mime,Gmail Api,我正在尝试使用gmail api和python发送html电子邮件，其中嵌入了base64编码的图像 这是我想通过电子邮件发送的html文件 <h1>This is a test message</h1> <p> <img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAAEsCAMAAABOo35HAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcE
<h1>This is a test message</h1>
<p>
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAAEsCAMAAABOo35HAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAAZdEVYdFNvZnR3YXJlAFBhaW50Lk5FVCB2My41LjFO5zj5AAAA5FBMVEUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWwvIjAAAATHRSTlMAAgMEBQYICgsMDQ4QERMUFRYXGBkaGxwdHh8hIyUnKCkrLS4vMTI0Nzg5Ojs8PkJDRUhMTlFSVFhaW19iY2hrbnF0dnd6f4CEiIyPu8o/fwAAB+RJREFUeNrt3WFb00gUhuFDXCoWCpQVFgvNAksFSoEVRRR1S3HBkvn//2c/zDTJJE3SklDX6TNfQMnpJHcmk0l8uRSxWm1ltUUzbX3lpWS2lfbJOc1qp/76wjiq5SNsxrWTRopqYQeWrOa/YFg9dXAtA5LfNmLXIOOqaKKvhVjMV4XtkItwirbFRTh5O9ML1AYSk7RdERHxLcDDPZ5zdPMPrQeaIxGRhdPY3xwsCi1jpV4TkVdxK4Dsth3DWbenrDPGVbK9te+Hr6M/7oGTbLELsSUireiPbXByrsMEVgucZGuBBRZYYIEFFlhggQUWWGCBBRZYYIH1q2K5FXTLTaqVxHIx6JaVVCuJ5WwiaUxSrSSW00G3ZFKtJJbjQbf8wTUllvsZm43KsOYgYxNLqpXEmoeg22FFWPMRdNuqBGtOgm5nL6vAmpeg224VWM4G3cYl1UpiuRx0SyfVSmK5HXRLJtVKYjkedHtbfD+cAsvxoNtO8TuEKbAcD7ptPxeWi29RW2CBBRZYYIEFFlhggQUWWGCBBRZYYIEFFlhggQUWWGCBBRZYYIEFFlhggQUWWGCBBRZYYIEFFlhggQUWWGCBBRZYYIEFFlhggQUWWGCBBRZYYIEFFlhggQUWWGCBBRZYYIEFFlhggQUWWDPDOvqhwnYrIvLm7treYunjY7RJN1nzTUTkj3+iv1B1Eal/DjxTvvejO20/3ph9S/ezNnOsq1jv6kpE2kr17GN4iG+ym6h5bOqaqB3rmoEp/5CuUR/y++mP2bd0P8HMR9aeShxnLVDKtzb5ZG2yatUEn+uia0bt7o2pudLVv6dqivu5TO1buh8z1GaK9SE8j5t62OwqpZrWJoEeLCLS06czqjFtV4NMVtMs7udSqUFBP4OQdIZYfX1NiMi+3pNjpZS1xaq59kTkWp/OqMa04/g1UVTj61ktr59vSl3n9+MpFazNHCtQqhOeTjMEblOns66/vdenMxoC0fD8llUzSNb0lBpm9WOGzVBPZ9G+pfrZVEF75nfDVaVUKzydZghcJU/nUH9XU0p1rCEQDc/LiWtusvsxw6aulPKtfUv1s9utzX7pYN1e1JGIqOSwsW5jalPX2DNU9ONOcc29UhcZ/ZgZqqWns7a9GLH62f8Z66xu/KD6nshaatjcWgdeE+kmZ6g16xMKamr6UMf2Y2aojl5pde21XbwftfkzsK6j/ofvPDP9WsPGs477Ppqyo+aPPqHrFdds6kMd20/HuhleW4uRWD/af/ZYg+QNp5ccNs3UTWqQnKGmqtnXw2ZsTTR7XuXvm5nVZovlpWaO6+TaJjYEAqV61hCYoGaYrLkIh026pj6qCZr5+5ZYpM0Gq5m64YwbNsPozumXrskZnsPRsAl2CvbtOPb8ODOs/eh0Wnf6WLsJZxuzECpZM9QPOzk1rw9qRfuWWNvPBusiOVdvquRz9X24h129jLywNmnn1xyPq1nLqDFtL9y3VD/BSnjn7M4c60Y92M9n+/EdfFgSqSn1xRsthIKmHgL2YU5b082oiX2kZPTTCRd2fW/mWN8/1+0NY6fz8f2SiGyG6wEZfG2INQTUj7+Kam5TNf/642tGy4/wP91L9xOuIZqP7zzelPJaGSywwAILLLDAAgsssMACCyywwAILLLDA+mWwvDC+2BYR791QKXUjIuLfmbzbk6KVTmJ5X+LZBq8fhiO7YXzxKdFKN7HC+OLdkoic6+9bOhFphs1TopXOzllNpdTf+qNMPs8kie7HZNcmjFY6i+VHYQPtUtdJonR2beJopbtYvTBsYFxaOklkvjwlWuku1nWYCDWXU0eHpsyXp0Qr3cUahP/MbjJ9lzq0Zr5kxiTrHx9Nzj0VrXQWy4uyiyYK2tcrrb4OFGXFJFceRjzpaKWzWE2zHpV4dPtC4nm3sTHJT+FQS0Ur3cXyw18z8qI5yaSx2/kxSTOr9Sq8Gf7PsXrhr0eYfN5ulMZey49WXmbEJN3Fim6GJgraDdPYgeTHJPsZMUlXsWp/3odLzAvtcmWNl7yYZJARk3QUqzN6qvuuXS717e9cj5cjKYxWjo1JuokVJhyDpojcq7slEc+8gFDqH+9pMUlHsb4bqq8NEak9vv9NRJr61zNMPjI3WpkRk+RNKW9KwQILLLDAAgsssMACCyywwAILLLDAAgsssMACCyywwAILLLDAAgsssMACCyywwAILLLDAAgsssMACCyywwAILLLDAAgsssMACCyywwAILLLDAAgsssMACCyywwAILLLDAAgsssMpi7YBVULEV/cx3EGu7UqzV6GdHDmLtRYe3XR5r+bz4437d1ogd3UZ5rBdn0Q/PNlyzOo1hrZTHkoPY550ftBxqW+34oZ1KBVivz+ej7VWBtXg2H1irVWDNydDal0qw5HAOrE4WK8KqzcGF2JCKsObgQvSlMizZdnxs+QsVYsnykcNUp41pnrUnePRe2HHW6mBRKsYSWfZPHJQ621+f8i3OpC/4XrVca43pX3k5/ja02veDYIEFFlhggQUWWGCBBRZYYIEFFlhggQUWWGCBBdazY+2AU4DleCK5ZEsEmh1PJJdsiUCz24nkki0ZaHY6kVzWKhVodjeR/AyB5nlJJFcSaJ6XRHI1gWaG1jSB5kMsJg8017gQpwg0cyFOE2jeZmxNEWh2OpFceaDZ4UTycwSa3UwkP1+g+RXPOHmB5v8A5Tz/tpGY9IQAAAAASUVORK5CYII=">
</p>
Content-Type: multipart/alternative; boundary=001a114442124f125f053789c367
--001a114442124f125f053789c367
Content-Type: text/plain; charset=UTF-8
This is a test message
--001a114442124f125f053789c367
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<h1>This is a test message</h1>
<p>
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ABOo35HAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQA=
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AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWwvIjAAAATHR=
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</p>
--001a114442124f125f053789c367--
内容类型：多部分/备选；边界=001a114442124f125f053789c367
--001a114442124f125f053789c367
内容类型：文本/纯文本；字符集=UTF-8
这是一条测试消息
--001a114442124f125f053789c367
内容类型：text/html；字符集=UTF-8
内容传输编码：引用可打印
这是一条测试消息
--001a114442124f125f053789c367--
零件中插入了一个3D
使用gmail api在电子邮件中嵌入图像的正确方法是什么
附加
经过进一步调查，我意识到如果我将电子邮件中的=3D
转换回=
，图像仍然会被破坏
我认为问题可能与我的base64编码数据在电子邮件源代码中被分割成多行有关。在使用带引号的可打印HTML时，“=”字符是转义字符，因此，=3D只是转义的equals
这封电子邮件可能还有其他问题。我不认为它是3D的
尝试将您的消息馈送到消息lint实用程序，看看它是否有任何抱怨
我决定添加图像作为附件，而不是使用嵌入式base64编码。这是我新的test.html
文件
<h1>This is a test message</h1>
<p>
<img src="cid:asdfgh">
</p>
这是一条测试消息
这是我的密码
"""Send an email message from the user's account.
"""
import base64
from email.mime.audio import MIMEAudio
from email.mime.base import MIMEBase
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import mimetypes
import os
from apiclient import errors
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 create_message(sender, to, subject, message_text):
"""Create a message for an email.
Args:
sender: Email address of the sender.
to: Email address of the receiver.
subject: The subject of the email message.
message_text: The text of the email message.
Returns:
An object containing a base64url encoded email object.
"""
message = MIMEText(message_text,'html')
message['to'] = to
message['from'] = sender
message['subject'] = subject
return {'raw': base64.urlsafe_b64encode(message.as_string())}
def create_multipart_message(sender, to, subject, message_text):
message = MIMEMultipart()
message['to'] = to
message['from'] = sender
message['subject'] = subject
msg = MIMEText(message_text,'html')
message.attach(msg)
return message
def attach_file_to_multipart_message(message, file, content_id=None):
content_type, encoding = mimetypes.guess_type(file)
if content_type is None or encoding is not None:
content_type = 'application/octet-stream'
main_type, sub_type = content_type.split('/', 1)
if main_type == 'text':
fp = open(file, 'rb')
msg = MIMEText(fp.read(), _subtype=sub_type)
fp.close()
elif main_type == 'image':
fp = open(file, 'rb')
msg = MIMEImage(fp.read(), _subtype=sub_type)
fp.close()
elif main_type == 'audio':
fp = open(file, 'rb')
msg = MIMEAudio(fp.read(), _subtype=sub_type)
fp.close()
else:
fp = open(file, 'rb')
msg = MIMEBase(main_type, sub_type)
msg.set_payload(fp.read())
fp.close()
filename = os.path.basename(file)
msg.add_header('Content-Disposition', 'attachment', filename=filename)
if content_id:
msg.add_header('Content-ID', '<%s>' % content_id)
message.attach(msg)
def finalize_message(message):
return {"raw": base64.urlsafe_b64encode(message.as_string())}
if __name__ == "__main__":
from login import service
m = create_multipart_message("xxxx@gmail","xxxx@gmail.com","test message", open("test.html").read())
attach_file_to_multipart_message(m, "placeholder.png", "asdfgh")
m_final = finalize_message(m)
send_message(service, "me", m_final)
”从用户帐户发送电子邮件。
"""
导入base64
从email.mime.audio导入MIMEAudio
从email.mime.base导入MIMEBase
从email.mime.image导入MIMEImage
从email.mime.multipart导入MIMEMultipart
从email.mime.text导入MIMEText
导入模拟类型
导入操作系统
从apiclient导入错误
def发送消息（服务、用户id、消息）：
“”“发送电子邮件。
Args：
服务：授权的Gmail API服务实例。
用户id：用户的电子邮件地址。特殊值“我”
可用于指示经过身份验证的用户。
消息：要发送的消息。
返回：
发送消息。
"""
尝试：
message=（service.users（）.messages（）.send（userId=user\u id，body=message）
.execute（））
打印“消息Id:%s”%Message['Id']
回信
除了errors.HttpError，错误：
“打印”发生错误：%s“%s”错误
def创建邮件（发件人、收件人、主题、邮件文本）：
“”“为电子邮件创建消息。
Args：
发件人：发件人的电子邮件地址。
收件人：收件人的电子邮件地址。
主题：电子邮件的主题。
message_text：电子邮件的文本。
返回：
包含base64url编码的电子邮件对象的对象。
"""
message=MIMEText（message_text，'html'）
消息['to']=to
邮件['from']=发件人
消息['subject']=主题
返回{'raw'：base64.urlsafe_b64encode（message.as_string（））}
def创建多部分消息（发件人、收件人、主题、消息文本）：
message=MIMEMultipart（）
消息['to']=to
邮件['from']=发件人
消息['subject']=主题
msg=MIMEText（消息文本，'html'）
消息。附加（msg）
回信
def attach_file_to_multipart_message（message，file，content_id=None）：
内容类型，编码=mimetypes.guess类型（文件）
如果内容类型为“无”或编码不是“无”：
内容类型='应用程序/八位字节流'
主类型，子类型=内容类型。拆分（'/'，1）
如果main_type==“text”：
fp=打开（文件“rb”）
msg=MIMEText（fp.read（），_subtype=sub_type）
fp.close（）
elif main_type=='image'：
fp=打开（文件“rb”）
msg=MIMEImage（fp.read（），_subtype=sub_type）
fp.close（）
elif main_type==“音频”：
fp=打开（文件“rb”）
msg=MIMEAudio（fp.read（），_subtype=sub_type）
fp.close（）
其他：
fp=打开（文件“rb”）
msg=MIMEBase（主类型、子类型）
msg.set_有效负载（fp.read（））
fp.close（）
filename=os.path.basename（文件）
msg.add_头（'Content-Disposition'，'attachment'，filename=filename）
如果内容id为：
msg.add_头（'Content-ID'，''%Content_-ID）
消息。附加（msg）
def finalize_消息（消息）：
返回{“raw”：base64.urlsafe_b64encode（message.as_string（））}
如果名称=“\uuuuu main\uuuuuuuu”：
从登录导入服务
m=创建多部分消息（“xxxx@gmail","xxxx@gmail.com，“测试消息”，打开（“test.html”）.read（）
将文件附加到多部分消息（m，“placeholder.png”、“asdfgh”）
m_final=最终确定消息（m）
发送信息（服务“我”，m_最终版）
使用这种方法，我能够在html电子邮件中显示图像。3D来自电子邮件使用的内容可打印编码。请注意邮件中的“内容传输编码：引用可打印”。从文章“引用的可打印编码转义具有相等符号（=）和字符值的2字符十六进制ASCII表示形式的特殊字符。例如，正文中的任何相等符号均替换为“=3D”，其中3D是ASCII排序序列中相等符号的十六进制表示形式。”图像是否显示在Gmail或其他基于浏览器的电子邮件客户端中？如果是这样，那么问题就出在你的电子邮件客户端上。电子邮件的经验法则：像1995年一样编写HTML。@frnhr浏览器和thunderbird都不能显示图像，即使我可以在测试HTML文件中看到图像。
"""Send an email message from the user's account.
"""
import base64
from email.mime.audio import MIMEAudio
from email.mime.base import MIMEBase
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import mimetypes
import os
from apiclient import errors
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 create_message(sender, to, subject, message_text):
"""Create a message for an email.
Args:
sender: Email address of the sender.
to: Email address of the receiver.
subject: The subject of the email message.
message_text: The text of the email message.
Returns:
An object containing a base64url encoded email object.
"""
message = MIMEText(message_text,'html')
message['to'] = to
message['from'] = sender
message['subject'] = subject
return {'raw': base64.urlsafe_b64encode(message.as_string())}
def create_multipart_message(sender, to, subject, message_text):
message = MIMEMultipart()
message['to'] = to
message['from'] = sender
message['subject'] = subject
msg = MIMEText(message_text,'html')
message.attach(msg)
return message
def attach_file_to_multipart_message(message, file, content_id=None):
content_type, encoding = mimetypes.guess_type(file)
if content_type is None or encoding is not None:
content_type = 'application/octet-stream'
main_type, sub_type = content_type.split('/', 1)
if main_type == 'text':
fp = open(file, 'rb')
msg = MIMEText(fp.read(), _subtype=sub_type)
fp.close()
elif main_type == 'image':
fp = open(file, 'rb')
msg = MIMEImage(fp.read(), _subtype=sub_type)
fp.close()
elif main_type == 'audio':
fp = open(file, 'rb')
msg = MIMEAudio(fp.read(), _subtype=sub_type)
fp.close()
else:
fp = open(file, 'rb')
msg = MIMEBase(main_type, sub_type)
msg.set_payload(fp.read())
fp.close()
filename = os.path.basename(file)
msg.add_header('Content-Disposition', 'attachment', filename=filename)
if content_id:
msg.add_header('Content-ID', '<%s>' % content_id)
message.attach(msg)
def finalize_message(message):
return {"raw": base64.urlsafe_b64encode(message.as_string())}
if __name__ == "__main__":
from login import service
m = create_multipart_message("xxxx@gmail","xxxx@gmail.com","test message", open("test.html").read())
attach_file_to_multipart_message(m, "placeholder.png", "asdfgh")
m_final = finalize_message(m)
send_message(service, "me", m_final)