Python使用PyQt实现网页加载过程

pip install PyQt5 PyQtWebEngine

import sys
from PyQt5.QtCore import QUrl
from PyQt5.QtWidgets import QApplication, QMainWindow, QVBoxLayout, QWidget
from PyQt5.QtWebEngineWidgets import QWebEngineView

class WebBrowser(QMainWindow):
    def __init__(self):
        super().__init__()

        # 设置窗口标题和大小
        self.setWindowTitle("PyQt WebView Example")
        self.setGeometry(100, 100, 1024, 768)

        # 创建QWebEngineView
        self.browser = QWebEngineView()

        # 加载网页
        self.browser.setUrl(QUrl("https://www.example.com"))  # 默认加载的网页

        # 将QWebEngineView添加到主窗口
        self.setCentralWidget(self.browser)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = WebBrowser()
    window.show()
    sys.exit(app.exec_())

# 加载本地文件
self.browser.setUrl(QUrl.fromLocalFile("/path/to/your/file.html"))

from PyQt5.QtWidgets import QLineEdit, QToolBar

class WebBrowser(QMainWindow):
    def __init__(self):
        super().__init__()

        # 设置窗口标题和大小
        self.setWindowTitle("PyQt WebView with Navigation")
        self.setGeometry(100, 100, 1024, 768)

        # 创建QWebEngineView
        self.browser = QWebEngineView()

        # 创建导航栏
        self.navbar = QToolBar()
        self.addToolBar(self.navbar)

        # 添加URL输入框
        self.url_bar = QLineEdit()
        self.url_bar.returnPressed.connect(self.navigate_to_url)
        self.navbar.addWidget(self.url_bar)

        # 添加后退、前进按钮
        back_button = self.navbar.addAction("Back")
        back_button.triggered.connect(self.browser.back)
        forward_button = self.navbar.addAction("Forward")
        forward_button.triggered.connect(self.browser.forward)

        # 加载默认网页
        self.browser.setUrl(QUrl("https://www.example.com"))
        self.url_bar.setText("https://www.example.com")

        # 将QWebEngineView添加到主窗口
        self.setCentralWidget(self.browser)

        # 监听URL变化
        self.browser.urlChanged.connect(self.update_url_bar)

    def navigate_to_url(self):
        """导航到用户输入的URL"""
        url = self.url_bar.text()
        self.browser.setUrl(QUrl(url))

    def update_url_bar(self, url):
        """更新URL输入框"""
        self.url_bar.setText(url.toString())

# 执行JavaScript
self.browser.page().runJavaScript("alert('Hello from PyQt!');")