使用pyQT5显示网页的实现步骤

• 1、pyqtwebengine安装库

开发环境配置请参考博文：

【python】在pycharm中使用pyqt5进行gui开发的基本流程

1、pyqtwebengine安装库

加载网页需要使用pyqtwebengine库，可以使用import pyqt5.qtwebenginewidgets测试是否有这个库，如果没有，需要先安装

pip install pyqtwebengine -i https://pypi.douban.com/simple/

2、设计窗体

在qt designer里面，没有webengine窗体，只能在程序中创建，先将其他的部分放好。
这儿放置了一个lineedit，用于输入网址，一个按钮

3、生成代码

使用pyuic生成代码，生成的代码为：

# -*- coding: utf-8 -*-

# form implementation generated from reading ui file 'web.ui'
#
# created by: pyqt5 ui code generator 5.15.4
#
# warning: any manual changes made to this file will be lost when pyuic5 is
# run again.  do not edit this file unless you know what you are doing.


from pyqt5 import qtcore, qtgui, qtwidgets


class ui_mainwindow(object):
    def setupui(self, mainwindow):
        mainwindow.setobjectname("mainwindow")
        mainwindow.resize(1200, 700)
        self.centralwidget = qtwidgets.qwidget(mainwindow)
        self.centralwidget.setobjectname("centralwidget")
        self.lineedit = qtwidgets.qlineedit(self.centralwidget)
        self.lineedit.setgeometry(qtcore.qrect(20, 10, 631, 31))
        self.lineedit.setobjectname("lineedit")
        self.pushbutton = qtwidgets.qpushbutton(self.centralwidget)
        self.pushbutton.setgeometry(qtcore.qrect(690, 10, 90, 30))
        self.pushbutton.setobjectname("pushbutton")
        mainwindow.setcentralwidget(self.centralwidget)
        self.menubar = qtwidgets.qmenubar(mainwindow)
        self.menubar.setgeometry(qtcore.qrect(0, 0, 1200, 23))
        self.menubar.setobjectname("menubar")
        mainwindow.setmenubar(self.menubar)
        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", "mainwindow"))
        self.lineedit.settext(_translate("mainwindow", "http://www.baidu.com"))
        self.pushbutton.settext(_translate("mainwindow", "打开"))

4、添加代码

引入库文件

from pyqt5 import qtcore, qtgui, qtwidgets,qtwebenginewidgets

1、添加webengine窗体

        ## 创建web窗体
        self.qwebengine = qtwebenginewidgets.qwebengineview(mainwindow)
        self.qwebengine.setgeometry(20, 50, 1600, 600)

2、创建按钮功能

        ## 创建连接
        self.pushbutton.clicked.connect(self.open_url)

3、编写按钮函数

    def open_url(self):
        url=self.lineedit.text()
        self.qwebengine.load(qtcore.qurl(url))

4、添加启动程序

import sys

if __name__ == '__main__':
    app = qtwidgets.qapplication(sys.argv)
    mainwindow = qtwidgets.qmainwindow()  # 创建窗体对象
    ui = ui_mainwindow()  # 创建pyqt设计的窗体对象
    ui.setupui(mainwindow)  # 调用窗体的方法对对象进行初始化设置
    mainwindow.show()  # 显示窗体
    sys.exit(app.exec_())  # 程序关闭时退出进程

5、完整代码

# -*- coding: utf-8 -*-

# form implementation generated from reading ui file 'web.ui'
#
# created by: pyqt5 ui code generator 5.15.4
#
# warning: any manual changes made to this file will be lost when pyuic5 is
# run again.  do not edit this file unless you know what you are doing.


from pyqt5 import qtcore, qtgui, qtwidgets,qtwebenginewidgets


class ui_mainwindow(object):
    def setupui(self, mainwindow):
        mainwindow.setobjectname("打开网页")
        mainwindow.resize(1640, 700)
        self.centralwidget = qtwidgets.qwidget(mainwindow)
        self.centralwidget.setobjectname("centralwidget")
        self.lineedit = qtwidgets.qlineedit(self.centralwidget)
        self.lineedit.setgeometry(qtcore.qrect(20, 10, 630, 30))
        self.lineedit.setobjectname("lineedit")
        self.pushbutton = qtwidgets.qpushbutton(self.centralwidget)
        self.pushbutton.setgeometry(qtcore.qrect(690, 10, 90, 30))
        self.pushbutton.setobjectname("pushbutton")
        mainwindow.setcentralwidget(self.centralwidget)
        self.menubar = qtwidgets.qmenubar(mainwindow)
        self.menubar.setgeometry(qtcore.qrect(0, 0, 1200, 23))
        self.menubar.setobjectname("menubar")
        mainwindow.setmenubar(self.menubar)
        self.statusbar = qtwidgets.qstatusbar(mainwindow)
        self.statusbar.setobjectname("statusbar")
        mainwindow.setstatusbar(self.statusbar)

        self.retranslateui(mainwindow)
        qtcore.qmetaobject.connectslotsbyname(mainwindow)

        ## 创建web窗体
        self.qwebengine = qtwebenginewidgets.qwebengineview(mainwindow)
        self.qwebengine.setgeometry(20, 50, 1600, 600)

        ## 创建连接
        self.pushbutton.clicked.connect(self.open_url)

    def retranslateui(self, mainwindow):
        _translate = qtcore.qcoreapplication.translate
        mainwindow.setwindowtitle(_translate("mainwindow", "打开网页"))
        self.lineedit.settext(_translate("mainwindow", "http://www.baidu.com"))
        self.pushbutton.settext(_translate("mainwindow", "打开"))


    def open_url(self):
        url=self.lineedit.text()
        self.qwebengine.load(qtcore.qurl(url))

import sys

if __name__ == '__main__':
    app = qtwidgets.qapplication(sys.argv)
    mainwindow = qtwidgets.qmainwindow()  # 创建窗体对象
    ui = ui_mainwindow()  # 创建pyqt设计的窗体对象
    ui.setupui(mainwindow)  # 调用窗体的方法对对象进行初始化设置
    mainwindow.show()  # 显示窗体
    sys.exit(app.exec_())  # 程序关闭时退出进程

6、运行

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