如何向RabbitMQ发送整型参数？

import pika

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

# 声明一个消息队列
channel.queue_declare(queue='my_queue')

# 要发送的整型参数
my_integer = 123

# 将整型参数转换为字符串，并发送到消息队列
channel.basic_publish(exchange='', routing_key='my_queue', body=str(my_integer))

# 关闭连接
connection.close()