Question

我通过pyqt5做了一些收到的tcp包对话框这段代码是加载对话框，在qthread中调用receive tcp包我想将数据包数据发送到对话框怎么发送？

这是我的代码。

import sys
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
import socketserver


class MyTCPHandler(socketserver.StreamRequestHandler):
    def handle(self):
        try:
            data = self.rfile.read(28)
            # how to send packet data to dialog?

        except Exception as e:
            print('MyTCPHandler.handle exception error: ', e)


class TestThread(QThread):
    HOST, PORT = '192.168.0.100', 8484

    def __init__(self, parent=None):
        super().__init__()

    def receive_packet(self):
        socketserver.TCPServer.allow_reuse_address = True
        server = socketserver.TCPServer((self.HOST, self.PORT), MyTCPHandler)
        server.serve_forever()

    def run(self):
        print('run thread')
        self.receive_packet()


class TestGUI(QDialog):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.btn1 = QPushButton("start thread", self)
        self.textbox1 = QLineEdit(self)
        vertBox = QVBoxLayout()
        vertBox.addWidget(self.btn1)
        vertBox.addWidget(self.textbox1)
        self.setLayout(vertBox)
        self.setGeometry(700, 500, 300, 100)
        self.btn1.clicked.connect(self.threadStart)
        self.show()

        self.th = TestThread(self)


    @pyqtSlot()
    def threadStart(self):
        self.th.start()


if __name__ == '__main__':
    app = QApplication(sys.argv)
    form = TestGUI()
    app.exec_()

Answer 1

要发送可以使用QMetaObject.invokeMethod()的线程的信息，所以必须通过GUI，在这种情况下，我们利用QThread的父级是GUI。

您可以设置一个新属性以将GUI传递给处理程序，并从处理程序通过self.server访问该属性。

最后，我们实现了一个接收信息的插槽。

import sys
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
import socketserver


class MyTCPHandler(socketserver.StreamRequestHandler):
    def handle(self):
        try:
            data = self.rfile.read(28)
            QMetaObject.invokeMethod(self.server.w, "setData",
                Qt.QueuedConnection, Q_ARG(bytes, data))

        except Exception as e:
            print('MyTCPHandler.handle exception error: ', e)


class TestThread(QThread):
    HOST, PORT = '192.168.0.102', 8000
    def __init__(self, parent=None):
        super().__init__(parent)

    def receive_packet(self):
        socketserver.TCPServer.allow_reuse_address = True
        server = socketserver.TCPServer((self.HOST, self.PORT), MyTCPHandler)
        server.w = self.parent()
        server.serve_forever()

    def run(self):
        print('run thread')
        self.receive_packet()


class TestGUI(QDialog):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.btn1 = QPushButton("start thread", self)
        self.textbox1 = QLineEdit(self)
        vertBox = QVBoxLayout()
        vertBox.addWidget(self.btn1)
        vertBox.addWidget(self.textbox1)
        self.setLayout(vertBox)
        self.setGeometry(700, 500, 300, 100)
        self.btn1.clicked.connect(self.threadStart)
        self.show()

        self.th = TestThread(self)

    @pyqtSlot(bytes)
    def setData(self, data):
        print(data)

    @pyqtSlot()
    def threadStart(self):
        self.th.start()


if __name__ == '__main__':
    app = QApplication(sys.argv)
    form = TestGUI()
    sys.exit(app.exec_())

@Plus：带信号

import sys
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
import socketserver


class MyTCPHandler(socketserver.StreamRequestHandler):
    def handle(self):
        try:
            data = self.rfile.read(28)
            self.server.qthread.dataChanged.emit(data)

        except Exception as e:
            print('MyTCPHandler.handle exception error: ', e)


class TestThread(QThread):
    HOST, PORT = '192.168.0.102', 8000
    dataChanged = pyqtSignal(bytes)
    def __init__(self, parent=None):
        super().__init__(parent)

    def receive_packet(self):
        socketserver.TCPServer.allow_reuse_address = True
        server = socketserver.TCPServer((self.HOST, self.PORT), MyTCPHandler)
        server.qthread = self
        server.serve_forever()

    def run(self):
        print('run thread')
        self.receive_packet()


class TestGUI(QDialog):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.btn1 = QPushButton("start thread", self)
        self.textbox1 = QLineEdit(self)
        vertBox = QVBoxLayout()
        vertBox.addWidget(self.btn1)
        vertBox.addWidget(self.textbox1)
        self.setLayout(vertBox)
        self.setGeometry(700, 500, 300, 100)
        self.btn1.clicked.connect(self.threadStart)
        self.show()

        self.th = TestThread(self)
        self.th.dataChanged.connect(self.setData)

    @pyqtSlot(bytes)
    def setData(self, data):
        print(data)

    @pyqtSlot()
    def threadStart(self):
        self.th.start()


if __name__ == '__main__':
    app = QApplication(sys.argv)
    form = TestGUI()
    sys.exit(app.exec_())

如何将数据包发送到对话框？

1 个答案: