如何通过rabbitmq发送带有附加数据的图片？

import pika

# 连接到RabbitMQ服务器
connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
channel = connection.channel()

# 声明一个队列
channel.queue_declare(queue='image_queue')

# 读取图片文件
with open('image.jpg', 'rb') as file:
    image_data = file.read()

# 构建消息体，将图片和附加数据打包成一个字典
message = {
    'image': image_data,
    'additional_data': {
        'description': '这是一张美丽的图片',
        'author': 'John Doe'
    }
}

# 发送消息
channel.basic_publish(exchange='', routing_key='image_queue', body=message)

# 关闭连接
connection.close()

import pika

# 连接到RabbitMQ服务器
connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
channel = connection.channel()

# 声明一个队列
channel.queue_declare(queue='image_queue')

# 定义消息处理函数
def process_image(ch, method, properties, body):
    # 解析消息体，获取图片和附加数据
    message = eval(body)
    image_data = message['image']
    additional_data = message['additional_data']

    # 处理图片和附加数据
    # ...

    # 确认消息已经处理完毕
    ch.basic_ack(delivery_tag=method.delivery_tag)

# 消费消息
channel.basic_consume(queue='image_queue', on_message_callback=process_image)

# 开始消费
channel.start_consuming()