如何在pyqt5文本浏览器上打印连续数据

问题描述

我创建了一个手动网络套接字并且我卡住了。 查询）如果按下连接（此处为关闭）按钮（创建连接），如果再次按下按钮，则如何在 pyqt5 GUI 的文本浏览器上打印从服务器接收的连续/实时数据，如果再次按下按钮，它应该被切换，即它应该停止接收数据（连接关闭）。

我的代码是

from PyQt5 import QtCore,QtGui,QtWidgets
from websocket import create_connection

class Ui_MainWindow(object):
    def connect(self,MainWindow):
        ws = create_connection("ws://192.168.0.205/ws")
        self.textbrowser_2.append("Connection created")
        while 1:
            self.textbrowser_2.append(ws.recv())
            print(ws.recv())

        
def setupUi(self,MainWindow):
    MainWindow.setobjectName("MainWindow")
    MainWindow.resize(800,600)
    self.centralwidget = QtWidgets.QWidget(MainWindow)
    self.centralwidget.setobjectName("centralwidget")
    self.pushButton = QtWidgets.QPushButton(self.centralwidget)
    self.pushButton.setGeometry(QtCore.QRect(700,70,81,61))
    font = QtGui.QFont()
    font.setBold(True)
    font.setWeight(75)
    self.pushButton.setFont(font)
    self.pushButton.setobjectName("pushButton")
    self.label = QtWidgets.QLabel(self.centralwidget)
    self.label.setGeometry(QtCore.QRect(50,191,51))
    font = QtGui.QFont()
    font.setPointSize(12)
    font.setBold(True)
    font.setWeight(75)
    self.label.setFont(font)
    self.label.setobjectName("label")
    self.label_2 = QtWidgets.QLabel(self.centralwidget)
    self.label_2.setGeometry(QtCore.QRect(30,60,51))
    font = QtGui.QFont()
    font.setPointSize(12)
    font.setBold(True)
    font.setWeight(75)
    self.label_2.setFont(font)
    self.label_2.setobjectName("label_2")
    self.label_3 = QtWidgets.QLabel(self.centralwidget)
    self.label_3.setGeometry(QtCore.QRect(160,130,141,81))
    font = QtGui.QFont()
    font.setPointSize(12)
    font.setBold(True)
    font.setWeight(75)
    self.label_3.setFont(font)
    self.label_3.setobjectName("label_3")
    self.label_4 = QtWidgets.QLabel(self.centralwidget)
    self.label_4.setGeometry(QtCore.QRect(20,200,201,61))
    font = QtGui.QFont()
    font.setPointSize(12)
    font.setBold(True)
    font.setWeight(75)
    self.label_4.setFont(font)
    self.label_4.setobjectName("label_4")
    self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
    self.pushButton_2.setGeometry(QtCore.QRect(690,260,51))
    font = QtGui.QFont()
    font.setPointSize(12)
    font.setBold(True)
    font.setWeight(75)
    self.pushButton_2.setFont(font)
    self.pushButton_2.setobjectName("pushButton_2")
    self.label_5 = QtWidgets.QLabel(self.centralwidget)
    self.label_5.setGeometry(QtCore.QRect(20,330,251,21))
    font = QtGui.QFont()
    font.setPointSize(12)
    font.setBold(True)
    font.setWeight(75)
    self.label_5.setFont(font)
    self.label_5.setobjectName("label_5")
    self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
    self.lineEdit.setGeometry(QtCore.QRect(82,601,61))
    self.lineEdit.setobjectName("lineEdit")
    self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
    self.lineEdit_2.setGeometry(QtCore.QRect(20,250,651,71))
    self.lineEdit_2.setobjectName("lineEdit_2")
    self.textbrowser = QtWidgets.QTextbrowser(self.centralwidget)
    self.textbrowser.setGeometry(QtCore.QRect(260,150,381,51))
    self.textbrowser.setobjectName("textbrowser")
    self.textbrowser_2 = QtWidgets.QTextbrowser(self.centralwidget)
    self.textbrowser_2.setGeometry(QtCore.QRect(30,360,731,192))
    self.textbrowser_2.setobjectName("textbrowser_2")
    MainWindow.setCentralWidget(self.centralwidget)
    self.menubar = QtWidgets.QMenuBar(MainWindow)
    self.menubar.setGeometry(QtCore.QRect(0,800,21))
    self.menubar.setobjectName("menubar")
    MainWindow.setMenuBar(self.menubar)
    self.statusbar = QtWidgets.QStatusBar(MainWindow)
    self.statusbar.setobjectName("statusbar")
    MainWindow.setStatusBar(self.statusbar)

    self.pushButton.clicked.connect(self.connect)

    self.retranslateUi(MainWindow)
    QtCore.QMetaObject.connectSlotsByName(MainWindow)

def retranslateUi(self,MainWindow):
    _translate = QtCore.QCoreApplication.translate
    MainWindow.setwindowTitle(_translate("MainWindow","MainWindow"))
    self.pushButton.setText(_translate("MainWindow","Close"))
    self.label.setText(_translate("MainWindow","Server loaction"))
    self.label_2.setText(_translate("MainWindow","URL"))
    self.label_3.setText(_translate("MainWindow","Status :"))
    self.label_4.setText(_translate("MainWindow","Request"))
    self.pushButton_2.setText(_translate("MainWindow","Send"))
    self.label_5.setText(_translate("MainWindow","Message Log"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

解决方法

首先，不要修改 QtDesigner 生成的代码，因此要应用我的解决方案，您必须重新生成 .py 文件并将其命名为 gui.py：pyuic5 filename.ui -o gui.py -x。

另一方面，不要使用 websocket 模块，因为它是为同步逻辑设计的，在这种情况下，最好使用 QtWebSockets 模块，它允许您使用 Qt 事件循环与 websocket 进行交互。

import sys

from PyQt5 import QtCore,QtWidgets,QtWebSockets

from gui import Ui_MainWindow


class MainWindow(QtWidgets.QMainWindow):
    def __init__(self,parent=None):
        super().__init__(parent)
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)

        self.socket = QtWebSockets.QWebSocket()
        self.socket.textMessageReceived.connect(self.handle_text_message_received)

        self.ui.pushButton.clicked.connect(self.connect_to_websocket)

    def connect_to_websocket(self):
        if self.socket.state() == QtNetwork.QAbstractSocket.UnconnectedState:
            url = "ws://192.168.0.205/ws"
            self.socket.open(QtCore.QUrl(url))
        elif self.socket.state() == QtNetwork.QAbstractSocket.ConnectedState:
            self.socket.close()

    def handle_text_message_received(self,message):
        self.ui.textBrowser_2.append(message)


if __name__ == "__main__":
    import sys

    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())