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
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#!/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.shot()
sys.exit(app.exec_())
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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
64位操作系统下对应PyQt安装包
Python3可直接使用pip命令安装PyQt5库,如:
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pip3 install PyQt5 - sip
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方法二、使用selenium
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#!/usr/bin/env python
# -*- coding: UTF-8 -*-
import time
from selenium import webdriver
browser = webdriver.Firefox()
browser.set_window_size( 1055 , 800 )
browser.find_element_by_id( "idClose" ).click()
time.sleep( 5 )
browser.save_screenshot( "shot.png" )
browser.quit()
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PS:selenium
库同样可以使用pip命令安装:
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pip install selenium
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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。
原文链接:https://blog.csdn.net/wang1472jian1110/article/details/72642605