pyqt4啓用插件時出現分段錯誤（核心轉儲）

Question

我正在使用PyQt4/QtWebKit在python網絡瀏覽器上工作，我需要啓用插件以便呈現Flash內容。

當我加入這行，我得到一個核心轉儲QWebSettings.globalSettings（）的setAttribute（QWebSettings.PluginsEnabled，真）

我的系統

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Linux的rwilson-的Aspire-E5-521 3.16 .0-47泛型＃63〜14.04.1 Ubuntu的SMP週五8月14日22時56分59秒UTC 2015年x86_64的x86_64的x86_64的GNU/Linux的

PyQt的版本

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（Qt的版本：「，「4.8 .6'）
（ 'SIP版本：'， '4.15.5'）
（ 'PyQt的版本：'， '4.10.4'）

這裏是所有的代碼

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#!/usr/bin/env python 


from PyQt4 import QtCore, QtGui, QtNetwork, QtWebKit 
from PyQt4.QtWebKit import QWebSettings 

QWebSettings.globalSettings().setAttribute(QWebSettings.PluginsEnabled, True) 

try: 
    import jquery_rc3 
except ImportError: 
    import jquery_rc2 


class MainWindow(QtGui.QMainWindow): 
    def __init__(self, url): 
     super(MainWindow, self).__init__() 

     self.progress = 0 

     fd = QtCore.QFile(":/jquery.min.js") 

     if fd.open(QtCore.QIODevice.ReadOnly | QtCore.QFile.Text): 
      self.jQuery = QtCore.QTextStream(fd).readAll() 
      fd.close() 
     else: 
      self.jQuery = '' 

     QtNetwork.QNetworkProxyFactory.setUseSystemConfiguration(True) 

     self.view = QtWebKit.QWebView(self) 
     self.view.load(url) 
     self.view.loadFinished.connect(self.adjustLocation) 
     self.view.titleChanged.connect(self.adjustTitle) 
     self.view.loadProgress.connect(self.setProgress) 
     self.view.loadFinished.connect(self.finishLoading) 

     self.locationEdit = QtGui.QLineEdit(self) 
     self.locationEdit.setSizePolicy(QtGui.QSizePolicy.Expanding, 
       self.locationEdit.sizePolicy().verticalPolicy()) 
     self.locationEdit.returnPressed.connect(self.changeLocation) 

     toolBar = self.addToolBar("Navigation") 
     toolBar.addAction(self.view.pageAction(QtWebKit.QWebPage.Back)) 
     toolBar.addAction(self.view.pageAction(QtWebKit.QWebPage.Forward)) 
     toolBar.addAction(self.view.pageAction(QtWebKit.QWebPage.Reload)) 
     toolBar.addAction(self.view.pageAction(QtWebKit.QWebPage.Stop)) 
     toolBar.addWidget(self.locationEdit) 

     viewMenu = self.menuBar().addMenu("&View") 
     viewSourceAction = QtGui.QAction("Page Source", self) 
     viewSourceAction.triggered.connect(self.viewSource) 
     viewMenu.addAction(viewSourceAction) 

     effectMenu = self.menuBar().addMenu("&Effect") 
     effectMenu.addAction("Highlight all links", self.highlightAllLinks) 

     self.rotateAction = QtGui.QAction(
       self.style().standardIcon(
         QtGui.QStyle.SP_FileDialogDetailedView), 
       "Turn images upside down", self, checkable=True, 
       toggled=self.rotateImages) 
     effectMenu.addAction(self.rotateAction) 

     toolsMenu = self.menuBar().addMenu("&Tools") 
     toolsMenu.addAction("Remove GIF images", self.removeGifImages) 
     toolsMenu.addAction("Remove all inline frames", 
       self.removeInlineFrames) 
     toolsMenu.addAction("Remove all object elements", 
       self.removeObjectElements) 
     toolsMenu.addAction("Remove all embedded elements", 
       self.removeEmbeddedElements) 
     self.setCentralWidget(self.view) 
     self.setUnifiedTitleAndToolBarOnMac(True) 

    def viewSource(self): 
     accessManager = self.view.page().networkAccessManager() 
     request = QtNetwork.QNetworkRequest(self.view.url()) 
     reply = accessManager.get(request) 
     reply.finished.connect(self.slotSourceDownloaded) 

    def slotSourceDownloaded(self): 
     reply = self.sender() 
     self.textEdit = QtGui.QTextEdit(None) 
     self.textEdit.setAttribute(QtCore.Qt.WA_DeleteOnClose) 
     self.textEdit.show() 
     self.textEdit.setPlainText(QtCore.QTextStream(reply).readAll()) 
     self.textEdit.resize(600, 400) 
     reply.deleteLater() 

    def adjustLocation(self): 
     self.locationEdit.setText(self.view.url().toString()) 

    def changeLocation(self): 
     url = QtCore.QUrl.fromUserInput(self.locationEdit.text()) 
     self.view.load(url) 
     self.view.setFocus() 

    def adjustTitle(self): 
     if 0 < self.progress < 100: 
      self.setWindowTitle("%s (%s%%)" % (self.view.title(), self.progress)) 
     else: 
      self.setWindowTitle(self.view.title()) 

    def setProgress(self, p): 
     self.progress = p 
     self.adjustTitle() 

    def finishLoading(self): 
     self.progress = 100 
     self.adjustTitle() 
     self.view.page().mainFrame().evaluateJavaScript(self.jQuery) 
     self.rotateImages(self.rotateAction.isChecked()) 

    def highlightAllLinks(self): 
     code = """$('a').each(
        function() { 
         $(this).css('background-color', 'yellow') 
        } 
       )""" 
     self.view.page().mainFrame().evaluateJavaScript(code) 

    def rotateImages(self, invert): 
     if invert: 
      code = """ 
       $('img').each(
        function() { 
         $(this).css('-webkit-transition', '-webkit-transform 2s'); 
         $(this).css('-webkit-transform', 'rotate(180deg)') 
        } 
       )""" 
     else: 
      code = """ 
       $('img').each(
        function() { 
         $(this).css('-webkit-transition', '-webkit-transform 2s'); 
         $(this).css('-webkit-transform', 'rotate(0deg)') 
        } 
       )""" 

     self.view.page().mainFrame().evaluateJavaScript(code) 

    def removeGifImages(self): 
     code = "$('[src*=gif]').remove()" 
     self.view.page().mainFrame().evaluateJavaScript(code) 

    def removeInlineFrames(self): 
     code = "$('iframe').remove()" 
     self.view.page().mainFrame().evaluateJavaScript(code) 

    def removeObjectElements(self): 
     code = "$('object').remove()" 
     self.view.page().mainFrame().evaluateJavaScript(code) 

    def removeEmbeddedElements(self): 
     code = "$('embed').remove()" 
     self.view.page().mainFrame().evaluateJavaScript(code) 


if __name__ == '__main__': 

    import sys 

    app = QtGui.QApplication(sys.argv) 

    if len(sys.argv) > 1: 
     url = QtCore.QUrl(sys.argv[1]) 
    else: 
     url = QtCore.QUrl('http://www.google.com/ncr') 

    browser = MainWindow(url) 
    browser.show() 

    sys.exit(app.exec_()) 

Answer 1

你在使用QWebSettings之前需要有一個QApplication的實例。

嘗試將違規行移動至MainWindow.__init__。