Python网页截图 Python实现的网页截图功能【PyQt4与selenium组件】
wang1472jian1110 人气:0本文实例讲述了Python实现的网页截图功能。分享给大家供大家参考,具体如下:
方法一、使用PyQt4的QtWebKit组件
#!/usr/bin/env python # -*- coding: UTF-8 -*- import sys import os.path from PyQt4 import QtGui,QtCore,QtWebKit class PageShotter(QtGui.QWidget): def __init__(self,url,filename,parent=None): QtGui.QWidget.__init__(self,parent) self.url = url self.filename = filename self.webpage = None def shot(self): webview = QtWebKit.QWebView(self) webview.load(QtCore.QUrl(self.url)) self.webpage = webview.page() self.connect(webview,QtCore.SIGNAL("loadFinished(bool)"),self.save_page) def save_page(self,finished): #print finished if finished: print u"开始截图!" size = self.webpage.mainFrame().contentsSize() print u"页面宽:%d,页面高:%d" % (size.width(),size.height()) self.webpage.setViewportSize(QtCore.QSize(size.width()+16,size.height())) img = QtGui.QImage(size, QtGui.QImage.Format_ARGB32) painter = QtGui.QPainter(img) self.webpage.mainFrame().render(painter) painter.end() filename= self.filename; if img.save(filename): filepath = os.path.join(os.path.dirname(__file__), filename) print u"截图完毕:%s" % filepath else: print u"截图失败"; else: print u"网页加载失败!" self.close() if __name__=="__main__": app = QtGui.QApplication(sys.argv) shotter = PageShotter("https://www.qb5200.com/", 'shot.png') shotter.shot() sys.exit(app.exec_())
运行后输出:
QFont::setPixelSize: Pixel size <= 0 (0)
开始截图!
页面宽:1058,页面高:9819
截图完毕:C:\py\jb51PyDemo\src\Demo\shot.png
注:
Python2的32位操作系统安装包可至此下载:https://www.qb5200.com/softs/548192.html
64位操作系统下对应PyQt安装包可至此下载:https://www.qb5200.com/softs/548197.html)
Python3可直接使用pip命令安装PyQt5库,如:
pip3 install PyQt5-sip
方法二、使用selenium
#!/usr/bin/env python # -*- coding: UTF-8 -*- import time from selenium import webdriver browser = webdriver.Firefox() browser.set_window_size(1055, 800) browser.get("https://www.qb5200.com/") browser.find_element_by_id("idClose").click() time.sleep(5) browser.save_screenshot("shot.png") browser.quit()
PS:selenium
库同样可以使用pip命令安装:
pip install selenium
另外,使用selenium时还需要下载geckodriver来驱动第三方浏览器,对于selenium3.x版本都会使用geckodriver来驱动firefox,所以需要下载geckodriver.exe,下载地址:https://github.com/mozilla/geckodriver/releases
下载后将geckodriver.exe放在C:\Python27即可(查看环境变量path中是否添加C:\Python27该路径)
希望本文所述对大家Python程序设计有所帮助。
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