拦截请求内容
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QWebEngineView/BlockRequestData.py
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QWebEngineView/BlockRequestData.py
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2020年2月18日
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@author: Irony
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@site: https://pyqt5.com https://github.com/892768447
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@email: 892768447@qq.com
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@file: QWebEngineView.BlockRequestData
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@description: 拦截请求内容
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"""
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from PyQt5.QtCore import QUrl, QFile, QIODevice
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from PyQt5.QtWebEngineCore import QWebEngineUrlSchemeHandler,\
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QWebEngineUrlRequestInterceptor, QWebEngineUrlScheme # @UnresolvedImport
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from PyQt5.QtWebEngineWidgets import QWebEngineView, QWebEngineProfile
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__Author__ = 'Irony'
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__Copyright__ = 'Copyright (c) 2019'
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__Version__ = 'Version 1.0'
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# 自定义url协议头
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class UrlSchemeHandler(QWebEngineUrlSchemeHandler):
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def requestStarted(self, job):
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url = job.requestUrl().toString()
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if url == 'myurl://png':
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file = QFile('Data/app.png', job)
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file.open(QIODevice.ReadOnly)
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job.reply(b'image/png', file)
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# 请求拦截器
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class RequestInterceptor(QWebEngineUrlRequestInterceptor):
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def interceptRequest(self, info):
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url = info.requestUrl().toString()
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# 这里演示只是拦截所有png图片,可自由发挥比如拦截js文件,修改后再返回
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if url.endswith('.png'):
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# 原理在于重定向到自己的url协议里
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info.redirect(QUrl('myurl://png'))
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class Window(QWebEngineView):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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self.resize(800, 600)
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# 首先获取默认的url协议
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h1 = QWebEngineUrlScheme.schemeByName(b'http')
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h2 = QWebEngineUrlScheme.schemeByName(b'https')
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# 这里需要修改增加本地文件和跨域支持
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CorsEnabled = 0x80 # 5.14才增加
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h1.setFlags(h1.flags() |
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QWebEngineUrlScheme.SecureScheme |
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QWebEngineUrlScheme.LocalScheme |
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QWebEngineUrlScheme.LocalAccessAllowed |
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CorsEnabled)
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h2.setFlags(h2.flags() |
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QWebEngineUrlScheme.SecureScheme |
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QWebEngineUrlScheme.LocalScheme |
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QWebEngineUrlScheme.LocalAccessAllowed |
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CorsEnabled)
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# 安装url拦截器和自定义url协议处理
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de = QWebEngineProfile.defaultProfile() # @UndefinedVariable
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de.setRequestInterceptor(RequestInterceptor(self))
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de.installUrlSchemeHandler(b'myurl', UrlSchemeHandler(self))
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if __name__ == '__main__':
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import sys
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from PyQt5.QtWidgets import QApplication
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app = QApplication(sys.argv)
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w = Window()
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w.show()
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w.load(QUrl('https://www.baidu.com/'))
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sys.exit(app.exec_())
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BIN
QWebEngineView/Data/app.png
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QWebEngineView/Data/app.png
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@ -6,6 +6,7 @@
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- [网页整体截图](#3网页整体截图)
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- [网页整体截图](#3网页整体截图)
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- [同网站不同用户](#4同网站不同用户)
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- [同网站不同用户](#4同网站不同用户)
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- [拦截请求](#5拦截请求)
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- [拦截请求](#5拦截请求)
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- [拦截请求内容](#6拦截请求内容)
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## 1、获取Cookie
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## 1、获取Cookie
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[运行 GetCookie.py](GetCookie.py)
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[运行 GetCookie.py](GetCookie.py)
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@ -44,3 +45,11 @@
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通过`QWebEngineUrlRequestInterceptor`中的`interceptRequest`方法对每个请求做拦截过滤
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通过`QWebEngineUrlRequestInterceptor`中的`interceptRequest`方法对每个请求做拦截过滤
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![BlockRequest](ScreenShot/BlockRequest.gif)
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![BlockRequest](ScreenShot/BlockRequest.gif)
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## 6、拦截请求内容
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[运行 BlockRequestData.py](BlockRequestData.py)
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这里用了一个投巧的办法,原理是先通过`QWebEngineUrlRequestInterceptor`中的`interceptRequest`方法对每个请求做拦截过滤,
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发现目标url后重定向到`QWebEngineUrlSchemeHandler`实现的自定义协议头返回数据
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![BlockRequestData](ScreenShot/BlockRequestData.png)
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QWebEngineView/ScreenShot/BlockRequestData.png
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QWebEngineView/ScreenShot/BlockRequestData.png
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@ -139,6 +139,7 @@ https://pyqt.site 论坛是专门针对PyQt5学习和提升开设的网站,分
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- [网页整体截图](QWebEngineView/ScreenShotPage.py)
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- [网页整体截图](QWebEngineView/ScreenShotPage.py)
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- [同网站不同用户](QWebEngineView/SiteDiffUser.py)
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- [同网站不同用户](QWebEngineView/SiteDiffUser.py)
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- [拦截请求](QWebEngineView/BlockRequest.py)
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- [拦截请求](QWebEngineView/BlockRequest.py)
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- [拦截请求内容](QWebEngineView/BlockRequestData.py)
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- [浏览器下载文件](Test/partner_625781186/6.QWebEngineView下载文件)
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- [浏览器下载文件](Test/partner_625781186/6.QWebEngineView下载文件)
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- [打印网页](Test/partner_625781186/17_打印预览qwebengineview)
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- [打印网页](Test/partner_625781186/17_打印预览qwebengineview)
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