使用 PyQt4 抓取 Javascript 驱动的网页 - 如何访问需要身份验证的页面?

发布于 10-24 03:53 字数 1265 浏览 5 评论 0原文

我必须在我们公司的内联网上抓取一个非常非常简单的页面,以便自动化我们的一个内部流程(返回函数的输出是否成功)。

我找到了以下示例:

import sys
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from PyQt4.QtWebKit import *

class Render(QWebPage):
  def __init__(self, url):
    self.app = QApplication(sys.argv)
    QWebPage.__init__(self)
    self.loadFinished.connect(self._loadFinished)
    self.mainFrame().load(QUrl(url))
    self.app.exec_()

  def _loadFinished(self, result):
    self.frame = self.mainFrame()
    self.app.quit()

url = 'http://sitescraper.net'
r = Render(url)
html = r.frame.toHtml()

来自 http://blog .sitescraper.net/2010/06/scraping-javascript-webpages-in-python.html 它几乎是完美的。我只需要能够提供身份验证即可查看该页面。

我一直在浏览 PyQt4 的文档,我承认其中很多内容超出了我的理解范围。如果有人可以提供帮助,我将不胜感激。

编辑: 不幸的是,gruszczy 的方法对我不起作用。当我通过 urllib2 完成类似的操作时,我使用了以下代码并且它起作用了......

username = 'user'
password = 'pass'

req = urllib2.Request(url)
base64string = base64.encodestring('%s:%s' % (username, password))[:-1]
authheader = "Basic %s" % base64string
req.add_header("Authorization", authheader)

handle = urllib2.urlopen(req)

I have to scrape a very, very simple page on our company's intranet in order to automate one of our internal processes (returning a function's output as successful or not).

I found the following example:

import sys
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from PyQt4.QtWebKit import *

class Render(QWebPage):
  def __init__(self, url):
    self.app = QApplication(sys.argv)
    QWebPage.__init__(self)
    self.loadFinished.connect(self._loadFinished)
    self.mainFrame().load(QUrl(url))
    self.app.exec_()

  def _loadFinished(self, result):
    self.frame = self.mainFrame()
    self.app.quit()

url = 'http://sitescraper.net'
r = Render(url)
html = r.frame.toHtml()

From http://blog.sitescraper.net/2010/06/scraping-javascript-webpages-in-python.html and it's almost perfect. I just need to be able to provide authentication to view the page.

I've been looking through the documentation for PyQt4 and I'll admit a lot of it is over my head. If anyone could help, I'd appreciate it.

Edit:
Unfortunately gruszczy's method didn't work for me. When I had done something similar through urllib2, I used the following code and it worked...

username = 'user'
password = 'pass'

req = urllib2.Request(url)
base64string = base64.encodestring('%s:%s' % (username, password))[:-1]
authheader = "Basic %s" % base64string
req.add_header("Authorization", authheader)

handle = urllib2.urlopen(req)

如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。

扫码二维码加入Web技术交流群

发布评论

需要 登录 才能够评论, 你可以免费 注册 一个本站的账号。

评论(2

后知后觉2024-10-31 03:53:31

我想通了。这就是我最终得到的结果,以防它对其他人有帮助。

#!/usr/bin/python
# -*- coding: latin-1 -*-
import sys
import base64
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from PyQt4.QtWebKit import *
from PyQt4 import QtNetwork

class Render(QWebPage):
  def __init__(self, url):
    self.app = QApplication(sys.argv)

    username = 'username'
    password = 'password'

    base64string = base64.encodestring('%s:%s' % (username, password))[:-1]
    authheader = "Basic %s" % base64string

    headerKey = QByteArray("Authorization")
    headerValue = QByteArray(authheader)

    url = QUrl(url)
    req = QtNetwork.QNetworkRequest()
    req.setRawHeader(headerKey, headerValue)
    req.setUrl(url)

    QWebPage.__init__(self)
    self.loadFinished.connect(self._loadFinished)


    self.mainFrame().load(req)
    self.app.exec_()

  def _loadFinished(self, result):
    self.frame = self.mainFrame()
    self.app.quit()

def main():
    url = 'http://www.google.com'
    r = Render(url)
    html = r.frame.toHtml()

I figured it out. Here's what I ended up with in case it can help someone else.

#!/usr/bin/python
# -*- coding: latin-1 -*-
import sys
import base64
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from PyQt4.QtWebKit import *
from PyQt4 import QtNetwork

class Render(QWebPage):
  def __init__(self, url):
    self.app = QApplication(sys.argv)

    username = 'username'
    password = 'password'

    base64string = base64.encodestring('%s:%s' % (username, password))[:-1]
    authheader = "Basic %s" % base64string

    headerKey = QByteArray("Authorization")
    headerValue = QByteArray(authheader)

    url = QUrl(url)
    req = QtNetwork.QNetworkRequest()
    req.setRawHeader(headerKey, headerValue)
    req.setUrl(url)

    QWebPage.__init__(self)
    self.loadFinished.connect(self._loadFinished)


    self.mainFrame().load(req)
    self.app.exec_()

  def _loadFinished(self, result):
    self.frame = self.mainFrame()
    self.app.quit()

def main():
    url = 'http://www.google.com'
    r = Render(url)
    html = r.frame.toHtml()
肥爪爪2024-10-31 03:53:31

试试这个:

  url = QUrl(url)
  url.setUserName(username)
  url.setPassword(password)
  self.mainFrame().load(url)

Try this:

  url = QUrl(url)
  url.setUserName(username)
  url.setPassword(password)
  self.mainFrame().load(url)
~没有更多了~
我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站,即表示您同意使用 Cookies 和您的相关数据。
原文