PyQt5 QWebEngineView 不显示任何内容

Question

所以我正在使用 PyQt5 和 QtWebEngineView 构建一个简单的 Web 浏览器，它工作正常，但是当我在地址栏中键入内容并按回车键时，当前页面发生变化但输入的网址没有加载，屏幕仍然空白。

它也不适用于 https://

"""A Simple Web Browser Written in Python and PyQt5"""

import sys

from PyQt5.QtCore import QUrl
from PyQt5.QtGui import QIcon
from PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5.QtWidgets import QApplication, QMainWindow, QToolBar, QAction, QLineEdit


class PyChromeWindow(QMainWindow):
    DEFAULT_SEARCH_ENGINE = QUrl("https://www.google.com")

    def __init__(self):
        super(PyChromeWindow, self).__init__()
        self.browser = QWebEngineView(self)
        self.browser.setUrl(self.DEFAULT_SEARCH_ENGINE)

        # ToolBar
        self.browser_tool_bar = QToolBar()
        self.addToolBar(self.browser_tool_bar)

        # Back Action
        self.back_btn = QAction(QIcon('./resources/back_arrow16px.png'), 'Back')
        self.back_btn.triggered.connect(self.browser.back)
        self.browser_tool_bar.addAction(self.back_btn)

        # Forward Action
        self.forward_action = QAction(QIcon('./resources/forward_arrow16px.png'), 'Forward')
        self.forward_action.triggered.connect(self.browser.forward)
        self.browser_tool_bar.addAction(self.forward_action)

        # Refresh Action
        self.refresh_action = QAction(QIcon('./resources/refresh_icon16px.png'), 'Refresh')
        self.refresh_action.triggered.connect(self.browser.reload)
        self.browser_tool_bar.addAction(self.refresh_action)

        # Home Action
        self.home_action = QAction(QIcon('./resources/home_icon16px.png'), 'Home')
        self.home_action.triggered.connect(lambda: self.browser.setUrl(self.DEFAULT_SEARCH_ENGINE))
        self.browser_tool_bar.addAction(self.home_action)

        # Address Bar
        self.address_bar = QLineEdit()
        self.address_bar.returnPressed.connect(self.navigate_to_url)
        self.browser_tool_bar.addWidget(self.address_bar)

        self.setCentralWidget(self.browser)
        self.showMaximized()

    def navigate_to_url(self):
        """Navigate to a specific URL"""
        url = QUrl(self.address_bar.text())
        self.browser.load(url)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    app.setApplicationName("PyChrome")
    window = PyChromeWindow()
    app.exec_()

Answer 1

"www.google.com" 不是 QWebEngineView 的有效 url，在这种情况下，您必须使用 QUrl::fromUserInput() 推导出有效的 url.

url = QUrl.fromUserInput(self.address_bar.text())

PyQt5 QWebEngineView 不显示任何内容

PyQt5 QWebEngineView not Displaying Anything

python

pyqt

pyqt5

qtwebengine