为什么使用 Flask Mail 发送的文本附件是空的?

Why text attachment sent using Flask Mail is empty?

我正在尝试使用带有 .txt 文件附件的 Flask-Mail 发送电子邮件。到目前为止,要么我收到错误,要么电子邮件发送了 .txt。文件是空白的我试过两种方法:

遵循文档的一种方式:

with current_app.open_resource("sample.txt") as fp:
    msg.attach("sample.txt","text/plain", fp.read())

这会导致错误:

TypeError: 'exceptions.IOError' object is not callable

没有open_resource方法我也试过了:

 msg.attach("sample.txt","text/plain")
    mail.send(msg)

这导致电子邮件发送但 .txt。附件是空白的。

完整 try/except 区块下方

try: 
    msg = Message("New File",
              sender="SENDER",
              recipients=["RECIPIENT"])
    msg.body = "Hello Flask message sent from Flask-Mail"
    with current_app.open_resource("sample.txt") as fp:
        msg.attach("sample.txt","text/plain", fp.read())
    mail.send(msg)
except Exception as e:
    return e
return "file was successfully sent"

为了正确发送附件,我缺少什么?

根据Flask-Mail documentation,这应该是完美的:

with current_app.open_resource("sample.txt") as fp:
    msg.attach("sample.txt","text/plain", fp.read())
mail.send(msg)
  • 其中 current_app.open_resource("sample.txt") 打开文件 sample.txt 读取位置
  • 并且 msg.attach("sample.txt","text/plain", fp.read()) 使用 sample.txt 作为附件名称附加它
  • 终于mail.send(msg)发送邮件

确保您的 sample.txt 文件位置正确,如果它不起作用,请通过 app.config['DEBUG'] = True 启用调试并查看错误是什么。