我正在使用PYQT5创建一个验证码收割机，以存储令牌并将其传递到特定网站。问题是，当我尝试使用js函数存储它时，它会向我返回此错误：“ js：未捕获（承诺）为空”]
但是当我尝试window.alert（grecaptcha.getResponse（））时，它可以工作，因此会生成令牌。不幸的是，我什至无法将它们保存在文本文件中
from PyQt5 import QtCore, QtGui, QtWidgets, QtWebEngineWidgets, QtWebChannel
class Backend(QtCore.QObject):
valueChanged = QtCore.pyqtSignal(str)
def __init__(self, parent=None):
super().__init__(parent)
self._value = ""
@QtCore.pyqtProperty(str)
def value(self):
return self._value
@value.setter
def value(self, v):
self._value = v
self.valueChanged.emit(v)
class Widget(QtWidgets.QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.webEngineView = QtWebEngineWidgets.QWebEngineView()
lay = QtWidgets.QVBoxLayout(self)
lay.addWidget(self.webEngineView, stretch=1)
backend = Backend(self)
backend.valueChanged.connect(self.foo_function)
self.channel = QtWebChannel.QWebChannel()
self.channel.registerObject("backend", backend)
self.webEngineView.page().setWebChannel(self.channel)
self.webEngineView.page().setUrl(QtCore . QUrl("https://www.google.com/recaptcha/api2/demo"))
self.webEngineView.page().setHtml("{}".format("""<html>
<head>
<title>Captcha Harvester</title>
<style type="text/css">
body {
margin: 1em 5em 0 5em;
font-family: sans-serif;
background-color: #4D4746
}
p {
font-family: sans-serif;
color: #F3F0F0
}
</style>
</head>
<body>
<p>CrepChef | Token Harvester</p>
<div class="g-recaptcha" data-sitekey="6Le-wvkSAAAAAPBMRTvw0Q4Muexq9bi0DJwx_mJ-" data-callback="submitToken"></div>
<p id="tokens">Available Tokens: 0</p>
<p>Captcha Sitekey: {{ sitekey }}</p>
<p>Domain: {{ domain }}</p>
<script type="text/javascript">
function submitToken() {
var backend = null;
new QWebChannel(qt.webChannelTransport, function (channel) {
backend = channel.objects.backend;
});
backend.value = grecaptcha.getResponse();
grecaptcha.reset()
}
</script>
<script type="text/javascript" src=static/scripts/jquery-3.2.1.min.js></script>
<script type="text/javascript" src=static/scripts/captcha.js></script>
<script type="text/javascript" src="https://www.google.com/recaptcha/api.js"></script>
</body>
</html>
"""), baseUrl=QtCore.QUrl("https://www.google.com/recaptcha/api2/demo"))
#path = "/test.html"
#self.webEngineView.setUrl(QtCore.QUrl.fromLocalFile(path))
@QtCore.pyqtSlot(str)
def foo_function(self, value):
print(value)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = Widget()
w.show()
sys.exit(app.exec_())
除了稍微重写逻辑之外，我还删除了不必要的链接：
rom PyQt5 import QtCore, QtGui, QtWidgets, QtWebEngineWidgets, QtWebChannel
class Backend(QtCore.QObject):
valueChanged = QtCore.pyqtSignal(str)
def __init__(self, parent=None):
super().__init__(parent)
self._value = ""
@QtCore.pyqtProperty(str, notify=valueChanged)
def value(self):
return self._value
@value.setter
def value(self, v):
self._value = v
self.valueChanged.emit(v)
HTML = """
<html>
<head>
<script src="qrc:///qtwebchannel/qwebchannel.js"></script>
<title>Captcha Harvester</title>
<style type="text/css">
body {
margin: 1em 5em 0 5em;
font-family: sans-serif;
background-color: #4D4746
}
p {
font-family: sans-serif;
color: #F3F0F0
}
</style>
<script type="text/javascript">
var backend = null;
new QWebChannel(qt.webChannelTransport, function (channel) {
backend = channel.objects.backend;
});
var verifyCallback = function(response) {
backend.value = response;
};
var onloadCallback = function() {
grecaptcha.render('example3', {
'sitekey' : '6Le-wvkSAAAAAPBMRTvw0Q4Muexq9bi0DJwx_mJ-',
'callback' : verifyCallback,
});
};
</script>
</head>
<body>
<p>CrepChef | Token Harvester</p>
<div id="example3"></div>
<p id="tokens">Available Tokens: 0</p>
<p>Captcha Sitekey: {{ sitekey }}</p>
<p>Domain: {{ domain }}</p>
<script src="https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit" async defer></script>
</body>
</html>
"""
class Widget(QtWidgets.QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.webEngineView = QtWebEngineWidgets.QWebEngineView()
lay = QtWidgets.QVBoxLayout(self)
lay.addWidget(self.webEngineView, stretch=1)
backend = Backend(self)
backend.valueChanged.connect(self.foo_function)
self.channel = QtWebChannel.QWebChannel()
self.channel.registerObject("backend", backend)
self.webEngineView.page().setWebChannel(self.channel)
self.webEngineView.page().setHtml(
HTML, baseUrl=QtCore.QUrl("https://www.google.com/recaptcha/api2/demo"),
)
@QtCore.pyqtSlot(str)
def foo_function(self, value):
print(value)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = Widget()
w.show()
sys.exit(app.exec_())
``