AWS lambda 通过 SES> ParamValidationError 发送带有附件的电子邮件：参数验证失败

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。有没有人通过 lambda 函数使用 lambda 和通过 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)

发现这个错误：

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