python - AWS lambda 通过 SES 发送带附件的电子邮件 > ParamValidationError : Parameter validation failed

Question

我正在使用 AWS lambda 通过 Amazon SES 发送带有附件的电子邮件。存储在 S3 存储桶中的附件文件。有没有人有使用 lambda 和通过 lambda 函数通过 ses 发送电子邮件的经验？

这是我的代码:

import boto3
from email.mime.text import MIMEText
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart

ses = boto3.client('ses')
s3_client = boto3.client('s3')

to_emails = ["xxx", "xxx"]

COMMASPACE = ', '

def lambda_handler(event, context):
    # create raw email
    msg = MIMEMultipart()
    msg['Subject'] = 'Email subject'
    msg['From'] = 'xxx'
    msg['To'] = COMMASPACE.join(to_emails)  ## joined the array of email strings
    # edit: didn't end up using this ^

    part = MIMEText('Attached is an important CSV')
    msg.attach(part)

    file_name = s3_client.download_file('x_file', 'x.jpg', '/tmp/x.jpg')

    if file_name:
        part = MIMEApplication(open(file_name, "rb").read())
        part.add_header('Content-Disposition', 'attachment', filename=file_name)
        msg.attach(part)

    ses.send_raw_email(RawMessage=msg.as_string(), Source=msg['From'], Destinations=to_emails)

found this error:

Parameter validation failed:
Invalid type for parameter RawMessage, value: Content-Type: multipart/mixed; boundary="===============1951926695068149774=="
MIME-Version: 1.0
Subject: Email subject
From: xxx
To: xxx, xxx

--===============1951926695068149774==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit

Attached is an important CSV
--===============1951926695068149774==--
, type: <type 'str'>, valid types: <type 'dict'>: ParamValidationError
Traceback (most recent call last):
  File "/var/task/lambda_function.py", line 33, in lambda_handler
    ses.send_raw_email(RawMessage=msg.as_string(), Source=msg['From'], Destinations=to_emails)
  File "/var/runtime/botocore/client.py", line 278, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/var/runtime/botocore/client.py", line 548, in _make_api_call
    api_params, operation_model, context=request_context)
  File "/var/runtime/botocore/client.py", line 601, in _convert_to_request_dict
    api_params, operation_model)
  File "/var/runtime/botocore/validate.py", line 270, in serialize_to_request
    raise ParamValidationError(report=report.generate_report())
ParamValidationError: Parameter validation failed:
Invalid type for parameter RawMessage, value: Content-Type: multipart/mixed; boundary="===============1951926695068149774=="
MIME-Version: 1.0
Subject: Email subject
From: xxx
To:xxx, xxx

--===============1951926695068149774==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit

Attached is an important CSV
--===============1951926695068149774==--
, type: <type 'str'>, valid types: <type 'dict'>

Answer 1

要解决您应该使用的问题:

ses.send_raw_email(RawMessage={
                       'Data': msg.as_string(),
                   }, 
                   Source=msg['From'], 
                   Destinations=to_emails
                   )

如 documentation 中所述