一个简单的示例，通过mqtt发送一张jpeg图片。

mqtt_pub_jpeg.py

import os
import paho.mqtt.client as mqtt

# MQTT 代理地址和端口
broker_address = "192.168.xx.xx"
broker_port = 1883

# 文件路径
file_path = "160x128_demo_.jpg"

# MQTT 主题
topic = "miniTV/frame"

 
def on_connect(client, userdata, flags, rc):
    print("Connected with result code " + str(rc))
    # 打开文件并发送内容
    with open(file_path, "rb") as file:
        file_content = file.read()
        client.publish(topic, file_content)
    
    # 断开连接
    client.disconnect()


 
def main():
    # 连接到 MQTT 代理
    client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION1)
    
    client.connect(broker_address, broker_port)
    client.on_connect = on_connect
    #连接用户名和密码
    #client.username_pw_set('agile-user', 'agile-pwd') 
    client.loop_forever()

    
main()