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python--mqtt 后台消息的接收与转发 # coding=utf-8 #接收数据代码模块 import paho.mqtt.client as mqtt import json def on_message(client, userdata, msg,user_id = XXX): data = str(msg.payload) jsonDict = json.loads(data) if(jsonDict is not None) and (jsonDict.has_key('runData')): if (jsonDict['runData'] is not None): userId = jsonDict['runData'].get("userId", None) if(userId == user_id): print("主题--:"+msg.topic+" 消息:"+str(msg.payload)) if(jsonDict is not None) and (jsonDict.has_key('configData')): if (jsonDict['configData'] is not None): userId = jsonDict['configData'].get("userId", None) if(userId == user_id): print("主题--:"+msg.topic+" 消息:"+str(msg.payload)) # 当连接上服务器后回调此函数 def on_connect(client, userdata, flags, rc): print("Connected with result code "+str(rc))
# 从服务器接受到消息后回调此函数 # def on_message(client, userdata, msg): # print("主题:"+msg.topic+" 消息:"+str(msg.payload))
def on_subscribe(client, userdata, mid, granted_qos): print "On Subscribed: qos = %d" % granted_qos # print "client: "+ str(client) + " userdata :"+str(userdata) + " mid:"+str(mid) + " granted_qos:"+str(granted_qos) def on_log(client, userdata, level, buf): print "%s: %s"%(level,buf) client = mqtt.Client() client.on_connect = on_connect #设置连接上服务器回调函数 client.on_message = on_message #设置接收到服务器消息回调函数 client.connect(host=xxxxxx,port=xxx) #连接服务器,端⼝为xxx,维持⼼跳为60秒 client.loop_forever() #产⽣数据模块 |
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