在html中使用波斯语字体发送Flask邮件批量HTML电子邮件

Question

with mail.connect() as conn:
for user in selectemail:
    message1 = request.form['htmltext']
    sender='garni.kh@gmail.com'
    subject = "hello, %s " %user[1]
    msg = Message(recipients=[user[0]],
                  html=message1,
                  subject=subject,
                  sender=sender
                  )

    conn.send(msg)

当我在我的html中使用时，这段代码运行良好          

正常​​英语 - 字体

但是当我使用波斯语时它不起作用。

     <h1>فونت فارسی</h1>

我在Flask中有这个错误：

     builtins.UnicodeEncodeError
     UnicodeEncodeError: 'ascii' codec can't encode character '\u0633' in position 659:     ordinal not in range(128)

这是烧瓶中的完整错误：

    File "d:\Python33\lib\site-packages\flask-0.10-py3.3.egg\flask\app.py", line 1836,   in __call__
    return self.wsgi_app(environ, start_response)
    File "d:\Python33\lib\site-packages\flask-0.10-py3.3.egg\flask\app.py", line 1820,  in wsgi_app
    response = self.make_response(self.handle_exception(e))
    File "d:\Python33\lib\site-packages\flask-0.10-py3.3.egg\flask\app.py", line 1403, in handle_exception
     reraise(exc_type, exc_value, tb)
     File "d:\Python33\lib\site-packages\flask-0.10-py3.3.egg\flask\_compat.py", line 33, in reraise
    raise value
    File "d:\Python33\lib\site-packages\flask-0.10-py3.3.egg\flask\app.py", line 1817,  in wsgi_app
    response = self.full_dispatch_request()
   File "d:\Python33\lib\site-packages\flask-0.10-py3.3.egg\flask\app.py", line 1477,   in full_dispatch_request
   rv = self.handle_user_exception(e)
   File "d:\Python33\lib\site-packages\flask-0.10-py3.3.egg\flask\app.py", line 1381,          in handle_user_exception
    reraise(exc_type, exc_value, tb)
   File "d:\Python33\lib\site-packages\flask-0.10-py3.3.egg\flask\_compat.py", line 33,  in reraise
   raise value
   File "d:\Python33\lib\site-packages\flask-0.10-py3.3.egg\flask\app.py", line 1475,   in full_dispatch_request
    rv = self.dispatch_request()
   File "d:\Python33\lib\site-packages\flask-0.10-py3.3.egg\flask\app.py", line 1461,       in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
   File "D:\contact\contactweb\flaskapp.py", line 160, in gotomailing
   conn.send(msg)
   File "d:\Python33\lib\site-packages\flask_mail.py", line 168, in send
    message.as_string())
   File "d:\Python33\lib\smtplib.py", line 745, in sendmail
    msg = _fix_eols(msg).encode('ascii')

Answer 1

根本问题是，当您将str（{2}上的unicode）传递给smtplib.sendmail时，字符串将被编码为bytes为ASCII。当你传入的只是ASCII字符时一切正常，但是一旦传入一组非ASCII字符（如فونتفارسی），你就会得到编码错误。

修复只是自己将消息编码为字节，提供正确的编码：

msg = Message(recipients=[user[0]],
              html=message1.encode("utf-8"),
              subject=subject,
              sender=sender
              )

message1.encode("utf-8")会将unicode str转换为bytes的流，表示UTF-8编码中的那些字符。当smtplib.sendmail检查消息内容时，它将看到它已经是一个字节流，并且不会再次尝试对其进行编码（从而解决您的问题）。