QWebView怎么模拟用户点击

QWebView如何模拟用户点击

# -*- coding: utf-8 -*-
"""
Created on Sun Sep 15 18:17:47 2013

@author: Administrator
"""

#!/usr/bin/env python

from PyQt4 import QtCore, QtGui

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

class DlgWebTest(QDialog):
    def __init__(self, *args, **argvs ):
        super(DlgWebTest, self).__init__(*args, **argvs)
        self.webView = QWebView(self)
        self.webView.loadFinished.connect(self.finishLoading)
        self.showMaximized()
        self.webView.showMaximized()
        self.first_load = True

    def setUrl(self, url):
        self.webView.setUrl(url)
  
    def finishLoading(self):
        # Begin document inspection.
        print('finisthloading')
        frame = self.webView.page().mainFrame()
        document = frame.documentElement()
        time.sleep(3)
        self.next_page(document)
#        self.parse_taobao(document)
#        self.test(document)
#        print(frame.url())
    
    def next_page(self,document):
        btn_next = document.findFirst('a[class="page-next"]')
        print('review',btn_next)
        print(btn_next.document())
        print(btn_next.toPlainText())
        btn_next.evaluateJavaScript("this.click()")
    
    def parse_taobao(self,document):
        review = document.findFirst('a[data-index="1"]')
        print('review',review)
        print(review.document())
        review.evaluateJavaScript("this.click()")
        print(review.toPlainText())
        print(review.tagName())
        review.evaluateJavaScript("click()")
#        document.evaluateJavaScript("document.getAttribute('className').click()")
        
    def test(self,document):
        z = document.findFirst('input[id="kw"]')
        z.setAttribute('value',u'我不知道')
        
        btn = document.findFirst('input[id="su"]')
        btn.evaluateJavaScript("this.click()")
#        document.evaluateJavaScript("document.getElementById('su').click()")
        
 
    def examineChildElements(self, parentElement):
        # Traverse the document.
       
        element = parentElement.firstChild()
        while not element.isNull():
            self.examineChildElements(element)
            element = element.nextSibling()
#            print(element.attribute())


if __name__ == '__main__':
    import sys
    app = QtGui.QApplication(sys.argv)
    url = 'http://item.taobao.com/item.htm?id=19655021071#reviews'
#    baidu = 'http://www.baidu.com'
    window = DlgWebTest()
    window.show()
    window.setUrl(QtCore.QUrl(url))

    sys.exit(app.exec_())

模拟加载百度网页时（test函数），可以点击，
我的问题是，在parse_taobao函数中，可以找到评价详情这个元素，但review.evaluateJavaScript("this.click()")，这句执行不了。没效果

麻烦帮忙看看如何解决，谢谢

[解决办法]

QWebElement btn = document.findFirst("input[type=submit]");
btn.evaluateJavaScript("this.click()");

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