用pyqt5简单实现Mqtt调试助手-初学python

最近在学习pyqt5，因为我们是做远程物联网设备的，所以就做个mqtt调试助手来练手。第一次做这种程序，没有加异常处理，会有很多不足，欢迎留言拍砖，直接上代码了

这个是程序入口，

 # 使用前先安装pyqt5和mqtt包
 # 方法：
 # pip install PyQt5
 # pip install paho-mqtt
 
 import sys
 import time
 
 from PyQt5.Qt import *
 from paho.mqtt import client as mqtt
 from TszsUI import Ui_MainWindow
 
 class Window(QMainWindow,Ui_MainWindow):
     def __init__(self):
         super().__init__()
         self.setupUi(self)
 
     def mqttlj(self):
         client_id = time.strftime('%Y%m%d%H%M%S', time.localtime(time.time()))
         self.client = mqtt.Client(client_id)
         self.client.username_pw_set(self.Username, self.Password)
         self.client.on_connect = self.on_connect
         self.client.on_message = self.on_message
         self.client.connect(self.HOST, int(self.PORT), 60)
         # client.loop_forever()  # 用这一句，服务器可以链接上，但是程序会阻塞在这里，使ui处于假死状态，所以换下面一句
         self.client.loop_start() # 用loop_start()程序会自动开新的线程连接并等待消息的到来
         print(self.Username, self.Password, self.HOST, self.PORT)
 
     def conn_Ck(self):
         self.Username = self.Name_lineEdit.text()   # 用户名
         self.Password = self.Pwd_lineEdit.text()    #密码
         self.HOST = self.Ip_lineEdit.text()       #host 地址
         self.PORT = self.Port_lineEdit.text()    #端口号
         self.SubTopic = self.Sub_lineEdit.text() # 订阅的主题
         self.PubTopic = self.Pub_lineEdit.text() # 发布的主题
         print(self.PubTopic)
         self.mqttlj()
         print("连接")
 
     def dk_puBtn(self):
         self.client.loop_stop()
         self.Conn_label.setText("连接断开")
         self.dk_Button.setEnabled(False)
         self.pushButton.setEnabled(True)
         print("断开链接")
 
     def send_Ck(self):
         self.payload = self.textEdit.toPlainText()
         self.on_publish(self.PubTopic,self.payload)
         print(self.PubTopic)
         print(self.payload)
         print("发送")
 
     def on_connect(self,client, userdata, flags, rc):
         if rc == 0:  # rc连接标志，成功会返回0
             print(rc)
             self.Conn_label.setText("连接成功")
             self.dk_Button.setEnabled(True)
             self.pushButton.setEnabled(False)
         print("Connected with result code " + str(rc))
         print(userdata)
         print(flags)
         client.subscribe(self.SubTopic)
 
     def on_message(self,client, userdata, msg):
         mm = str(msg.payload).split("'")  # 把接收到的字符串分割 ，分隔符是单引号 ‘
         missige=mm[1] # 取出收到的消息         print(msg.topic+" " + ":" + missige) #打印接收的消息
         self.Rece_text.append(msg.topic+" " + ":" + missige)
 
     def on_publish(self,topic,payload,qos = 1):  # 发布消息函数
         self.client.publish(topic,payload,qos)
 
 if __name__ =='__main__':
     app = QApplication(sys.argv)
     window = Window()
 
     window.show()
     sys.exit(app.exec_())

界面ui实现，是通过pyuic转过来的

 # -*- coding: utf-8 -*-
 
 # Form implementation generated from reading ui file 'Mqtt.ui'
 #
 # Created by: PyQt5 UI code generator 5.14.0
 #
 # WARNING! All changes made in this file will be lost!
 
 from PyQt5 import QtCore, QtGui, QtWidgets
 
 class Ui_MainWindow(object):
     def setupUi(self, MainWindow):
         MainWindow.setObjectName("MainWindow")
         MainWindow.setWindowModality(QtCore.Qt.NonModal)
         MainWindow.resize(500, 600)
         MainWindow.setMinimumSize(QtCore.QSize(500, 600))
         MainWindow.setMaximumSize(QtCore.QSize(500, 600))
         self.centralwidget = QtWidgets.QWidget(MainWindow)
         self.centralwidget.setObjectName("centralwidget")
         self.groupBox = QtWidgets.QGroupBox(self.centralwidget)
         self.groupBox.setGeometry(QtCore.QRect(10, 10, 471, 211))
         self.groupBox.setObjectName("groupBox")
         self.gridLayout = QtWidgets.QGridLayout(self.groupBox)
         self.gridLayout.setObjectName("gridLayout")
         self.Name_label = QtWidgets.QLabel(self.groupBox)
         self.Name_label.setObjectName("Name_label")
         self.gridLayout.addWidget(self.Name_label, 0, 0, 1, 1)
         self.Name_lineEdit = QtWidgets.QLineEdit(self.groupBox)
         self.Name_lineEdit.setObjectName("Name_lineEdit")
         self.gridLayout.addWidget(self.Name_lineEdit, 0, 1, 1, 3)
         self.Pwd_label = QtWidgets.QLabel(self.groupBox)
         self.Pwd_label.setObjectName("Pwd_label")
         self.gridLayout.addWidget(self.Pwd_label, 1, 0, 1, 1)
         self.Pwd_lineEdit = QtWidgets.QLineEdit(self.groupBox)
         self.Pwd_lineEdit.setObjectName("Pwd_lineEdit")
         self.gridLayout.addWidget(self.Pwd_lineEdit, 1, 1, 1, 3)
         self.IP_label = QtWidgets.QLabel(self.groupBox)
         self.IP_label.setObjectName("IP_label")
         self.gridLayout.addWidget(self.IP_label, 2, 0, 1, 1)
         self.Ip_lineEdit = QtWidgets.QLineEdit(self.groupBox)
         self.Ip_lineEdit.setObjectName("Ip_lineEdit")
         self.gridLayout.addWidget(self.Ip_lineEdit, 2, 1, 1, 3)
         self.Port_label = QtWidgets.QLabel(self.groupBox)
         self.Port_label.setObjectName("Port_label")
         self.gridLayout.addWidget(self.Port_label, 3, 0, 1, 1)
         self.Port_lineEdit = QtWidgets.QLineEdit(self.groupBox)
         self.Port_lineEdit.setObjectName("Port_lineEdit")
         self.gridLayout.addWidget(self.Port_lineEdit, 3, 1, 1, 3)
         self.Sub_label = QtWidgets.QLabel(self.groupBox)
         self.Sub_label.setObjectName("Sub_label")
         self.gridLayout.addWidget(self.Sub_label, 4, 0, 1, 1)
         self.Sub_lineEdit = QtWidgets.QLineEdit(self.groupBox)
         self.Sub_lineEdit.setObjectName("Sub_lineEdit")
         self.gridLayout.addWidget(self.Sub_lineEdit, 4, 1, 1, 3)
         self.Pub_label = QtWidgets.QLabel(self.groupBox)
         self.Pub_label.setObjectName("Pub_label")
         self.gridLayout.addWidget(self.Pub_label, 5, 0, 1, 1)
         self.Pub_lineEdit = QtWidgets.QLineEdit(self.groupBox)
         self.Pub_lineEdit.setObjectName("Pub_lineEdit")
         self.gridLayout.addWidget(self.Pub_lineEdit, 5, 1, 1, 3)
         self.State_label = QtWidgets.QLabel(self.groupBox)
         self.State_label.setObjectName("State_label")
         self.gridLayout.addWidget(self.State_label, 6, 0, 1, 1)
         self.Conn_label = QtWidgets.QLabel(self.groupBox)
         self.Conn_label.setStyleSheet("color: rgb(0, 0, 255);")
         self.Conn_label.setObjectName("Conn_label")
         self.gridLayout.addWidget(self.Conn_label, 6, 1, 1, 1)
         self.pushButton = QtWidgets.QPushButton(self.groupBox)
         self.pushButton.setObjectName("pushButton")
         self.gridLayout.addWidget(self.pushButton, 6, 2, 1, 1)
         self.dk_Button = QtWidgets.QPushButton(self.groupBox)
         self.dk_Button.setEnabled(False)
         self.dk_Button.setObjectName("dk_Button")
         self.gridLayout.addWidget(self.dk_Button, 6, 3, 1, 1)
         self.groupBox_2 = QtWidgets.QGroupBox(self.centralwidget)
         self.groupBox_2.setGeometry(QtCore.QRect(10, 230, 471, 121))
         self.groupBox_2.setObjectName("groupBox_2")
         self.Rece_text = QtWidgets.QTextEdit(self.groupBox_2)
         self.Rece_text.setGeometry(QtCore.QRect(10, 20, 451, 91))
         self.Rece_text.setObjectName("Rece_text")
         self.groupBox_3 = QtWidgets.QGroupBox(self.centralwidget)
         self.groupBox_3.setGeometry(QtCore.QRect(10, 360, 471, 141))
         self.groupBox_3.setObjectName("groupBox_3")
         self.textEdit = QtWidgets.QTextEdit(self.groupBox_3)
         self.textEdit.setGeometry(QtCore.QRect(10, 20, 451, 111))
         self.textEdit.setObjectName("textEdit")
         self.Send_pushButton = QtWidgets.QPushButton(self.centralwidget)
         self.Send_pushButton.setGeometry(QtCore.QRect(330, 520, 141, 23))
         self.Send_pushButton.setObjectName("Send_pushButton")
         MainWindow.setCentralWidget(self.centralwidget)
         self.menubar = QtWidgets.QMenuBar(MainWindow)
         self.menubar.setGeometry(QtCore.QRect(0, 0, 500, 23))
         self.menubar.setObjectName("menubar")
         MainWindow.setMenuBar(self.menubar)
         self.statusbar = QtWidgets.QStatusBar(MainWindow)
         self.statusbar.setObjectName("statusbar")
         MainWindow.setStatusBar(self.statusbar)
 
         self.retranslateUi(MainWindow)
         self.pushButton.clicked.connect(MainWindow.conn_Ck)
         self.Send_pushButton.clicked.connect(MainWindow.send_Ck)
         self.dk_Button.clicked.connect(MainWindow.dk_puBtn)
         QtCore.QMetaObject.connectSlotsByName(MainWindow)
 
     def retranslateUi(self, MainWindow):
         _translate = QtCore.QCoreApplication.translate
         MainWindow.setWindowTitle(_translate("MainWindow", "MQTT调试助手"))
         self.groupBox.setTitle(_translate("MainWindow", "连接配置"))
         self.Name_label.setText(_translate("MainWindow", "用  户  名："))
         self.Name_lineEdit.setText(_translate("MainWindow", "name"))
         self.Pwd_label.setText(_translate("MainWindow", "密      码："))
         self.Pwd_lineEdit.setText(_translate("MainWindow", "pass"))
         self.IP_label.setText(_translate("MainWindow", "IP  地  址："))
         self.Ip_lineEdit.setText(_translate("MainWindow", "ip"))
         self.Port_label.setText(_translate("MainWindow", "端  口  号："))
         self.Port_lineEdit.setText(_translate("MainWindow", ""))
         self.Sub_label.setText(_translate("MainWindow", "订阅的主题："))
         self.Sub_lineEdit.setText(_translate("MainWindow", "sub/"))
         self.Pub_label.setText(_translate("MainWindow", "发布的主题："))
         self.Pub_lineEdit.setText(_translate("MainWindow", "pub/"))
         self.State_label.setText(_translate("MainWindow", "连接状态："))
         self.Conn_label.setText(_translate("MainWindow", "连接断开"))
         self.pushButton.setText(_translate("MainWindow", "连接"))
         self.dk_Button.setText(_translate("MainWindow", "断开"))
         self.groupBox_2.setTitle(_translate("MainWindow", "数据接收"))
         self.groupBox_3.setTitle(_translate("MainWindow", "数据发送"))
         self.textEdit.setHtml(_translate("MainWindow", "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n"
 "<html><head><meta name=\"qrichtext\" content=\"1\" /><style type=\"text/css\">\n"
 "p, li { white-space: pre-wrap; }\n"
 "</style></head><body style=\" font-family:\'SimSun\'; font-size:9pt; font-weight:400; font-style:normal;\">\n"
 "<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"><span style=\" font-family:\'SimSun\';\">qweqwe</span></p></body></html>"))
         self.Send_pushButton.setText(_translate("MainWindow", "发送"))