如何使用 python 将加密的 PDF 附加到 gmail 的附件

Question

我有这段代码可以将文件附加到 gmail。它适用于其他文件类型但在处理“加密的 pdf”时（但文件可以正常查看或手动附加到 gmail 而无需输入密码）此功能添加的 gmail 中的 'pdf' 附件需要密码才能看法。有谁知道如何解决？我没有该文件的密码，因为它只是我老板想发送给客户以供参考的密码。

   def create_message_with_attachment():
        message = MIMEMultipart()
        message = MIMEText(message_data, "plain")     
        message.attach(message )
        
        
        message['to'] = "test@gmail.com"
        message['cc'] = "cc@gmail.com"
        message['subject'] = "testing sub"
        file= "test.pdf" # this file is encrypted, can view and print and edit the text box 
        just_fun = True        
        #BEGIN attach files to attachment of the email
        id= 1 #just to be used in cid 
        if just_fun:      
          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().decode("utf-8"), _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()
               elif main_type == "pdf":
                    fp = open(file, 'rb')
                    msg = MIMEApplication(fp.read(), _subtype = sub_type)
               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)
               message.attach(msg)


        raw_message = base64.urlsafe_b64encode(message.as_string().encode("utf-8"))
        return {'raw': raw_message.decode("utf-8")}

这是上述代码输出的图像示例。已附加并发送加密的 PDF，但打开时会询问密码。 enter image description here

感谢阅读

Answer 1

我从 post 中找到了一个关于附加过程后 pdf 显示为空的解决方案。所以下面是我自己的问题的答案。 .

def create_message_with_attachment():
        message = MIMEMultipart()
        message = MIMEText(message_data, "plain")     
        message.attach(message )
        message['to'] = "test@gmail.com"
        message['cc'] = "cc@gmail.com"
        message['subject'] = "testing sub"
        file= "test.pdf" # this file is encrypted, can view and print and edit the text box 
        just_fun = True        
        #BEGIN attach files to attachment of the email
        id= 1 #just to be used in cid 
        if just_fun:      
          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().decode("utf-8"), _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()
               elif main_type == "pdf":
                    fp = open(file, 'rb')
                    msg = MIMEApplication(fp.read(), _subtype = sub_type)
               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)
               #need to encode the pdf here before attach
               import email.encoders #import this one to encode
               email.encoders.encode_base64(msg)
               # now can attach the pdf file to the message
               message.attach(msg)
        raw_message = base64.urlsafe_b64encode(message.as_string().encode("utf-8"))
        return {'raw': raw_message.decode("utf-8")}

@Tomek Jurkiewicz 引用的答案

如何使用 python 将加密的 PDF 附加到 gmail 的附件

How to attach Encrypted PDF to gmail's attachment using python

python

gmail-api