如何在 QTextBrowser 中显示可点击的超链接

Question

我创建了一个 GUI，您可以在其中输入内容，在搜索栏中，它直接进入 dadduckgo 并搜索输入的元素，然后在 QTextBrowser 中打印所有超链接。但链接不可点击。我不知道如何使它可点击。如果你们能帮助我，我将不胜感激。 主要功能是input_value，我写了后端流程。这是我的代码：

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import QDialog, QApplication
from PyQt5.QtCore import QAbstractTableModel, Qt
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
import time
import pyautogui


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(875, 648)
        MainWindow.setAutoFillBackground(False)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.searchforpoi = QtWidgets.QPushButton(self.centralwidget)
        self.searchforpoi.setGeometry(QtCore.QRect(730, 20, 111, 34))
        self.searchforpoi.setObjectName("searchforpoi")
        self.searchforpoi.clicked.connect(self.input_value)
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setGeometry(QtCore.QRect(20, 20, 691, 31))
        self.lineEdit.setCursor(QtGui.QCursor(QtCore.Qt.IBeamCursor))
        self.lineEdit.setObjectName("lineEdit")
        self.textBrowser = QtWidgets.QTextBrowser(self.centralwidget)
        self.textBrowser.setGeometry(QtCore.QRect(25, 71, 821, 551))
        self.textBrowser.setObjectName("textBrowser")
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

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

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "POI Updation app"))
        self.searchforpoi.setText(_translate("MainWindow", "Search for POI"))

    def input_value(self):
        options = webdriver.ChromeOptions()
        options.headless = True
        textboxValue = self.lineEdit.text()
        browser = webdriver.Chrome()
        browser.implicitly_wait(30)
        browser.maximize_window()

        browser.get("http://www.duckduckgo.com")
        elem = browser.find_element_by_name("q")
        elem.clear()

        elem.send_keys(textboxValue)
        elem.submit()

        lists = browser.find_elements_by_class_name("result__url__domain")

        for a in browser.find_elements_by_xpath('.//a'):
            ab = a.get_attribute('href')
            self.textBrowser.append(ab)

        browser.quit()


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_())

编辑：- 当链接被点击时，它应该打开一个默认的网络浏览器并且 QTextBrowser 应该保留所有其他的链接。

Answer 1

消耗大量时间的任务必须在辅助线程中执行并通过信号发送信息，另一方面，将url作为文本传递并不能使其可点击，你应该做的是使用“href” .为了不更改页面，QTextBrowser（未删除链接）必须将属性OpenLinks 设为 False。要在操作系统默认浏览器中打开 url，您必须使用 QDesktopServices.openUrl():

import threading

from PyQt5 import QtCore, QtGui, QtWidgets

from selenium import webdriver
from selenium.webdriver.common.keys import Keys


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(875, 648)
        MainWindow.setAutoFillBackground(False)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.searchforpoi = QtWidgets.QPushButton(self.centralwidget)
        self.searchforpoi.setGeometry(QtCore.QRect(730, 20, 111, 34))
        self.searchforpoi.setObjectName("searchforpoi")

        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setGeometry(QtCore.QRect(20, 20, 691, 31))
        self.lineEdit.setCursor(QtGui.QCursor(QtCore.Qt.IBeamCursor))
        self.lineEdit.setObjectName("lineEdit")
        self.textBrowser = QtWidgets.QTextBrowser(self.centralwidget)
        self.textBrowser.setGeometry(QtCore.QRect(25, 71, 821, 551))
        self.textBrowser.setObjectName("textBrowser")
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

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

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "POI Updation app"))
        self.searchforpoi.setText(_translate("MainWindow", "Search for POI"))


class DriverWorker(QtCore.QObject):
    urlsSignals = QtCore.pyqtSignal(list)

    def get_urls(self, text):
        threading.Thread(target=self._task, args=(text,), daemon=True).start()

    def _task(self, text):
        options = webdriver.ChromeOptions()
        options.headless = True
        browser = webdriver.Chrome()
        browser.implicitly_wait(30)
        browser.maximize_window()

        browser.get("http://www.duckduckgo.com")
        elem = browser.find_element_by_name("q")
        elem.clear()

        elem.send_keys(text)
        elem.submit()

        lists = browser.find_elements_by_class_name("result__url__domain")

        urls = []
        for a in browser.find_elements_by_xpath(".//a"):
            ab = a.get_attribute("href")
            urls.append(ab)
        self.urlsSignals.emit(urls)
        browser.quit()


class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setupUi(self)
        self.searchforpoi.clicked.connect(self.input_value)
        self.worker = DriverWorker()
        self.worker.urlsSignals.connect(self.on_urls)
        self.textBrowser.anchorClicked.connect(QtGui.QDesktopServices.openUrl)
        self.textBrowser.setOpenLinks(False)

    @QtCore.pyqtSlot()
    def input_value(self):
        textboxValue = self.lineEdit.text()
        self.worker.get_urls(textboxValue)

    @QtCore.pyqtSlot(list)
    def on_urls(self, urls):
        self.textBrowser.clear()
        for url in urls:
            html = """<a href="{url}">{url}</a>""".format(url=url)
            self.textBrowser.append(html)


if __name__ == "__main__":
    import sys

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