为了回答这个问题，我使用了以下答案：
获取被单击的项目：https : //stackoverflow.com/a/9012576
根据项目获取XPATH：https：//stackoverflow.com/a/58677712
运行js脚本并将信息发送到python：https : //stackoverflow.com/a/55294356
将所有这些部分结合在一起，您将获得以下解决方案：
├── main.py└── xpath_from_element.js
main.py
import osfrom PyQt5 import QtCore, QtWidgets, QtWebEngineWidgets, QtWebChannelfrom jinja2 import TemplateCURRENT_DIR = os.path.dirname(os.path.realpath(__file__))class Element(QtCore.QObject): def __init__(self, name, parent=None): super(Element, self).__init__(parent) self._name = name @property def name(self): return self._name def script(self): return ""class WebEnginePage(QtWebEngineWidgets.QWebEnginePage): def __init__(self, parent=None): super(WebEnginePage, self).__init__(parent) self.loadFinished.connect(self.onLoadFinished) self._objects = [] self._scripts = [] def add_object(self, obj): self._objects.append(obj) @QtCore.pyqtSlot(bool) def onLoadFinished(self, ok): print("Finished loading: ", ok) if ok: self.load_qwebchannel() self.add_objects() def load_qwebchannel(self): file = QtCore.QFile(":/qtwebchannel/qwebchannel.js") if file.open(QtCore.QIODevice.ReadOnly): content = file.readAll() file.close() self.runJavascript(content.data().depre()) if self.webChannel() is None: channel = QtWebChannel.QWebChannel(self) self.setWebChannel(channel) def add_objects(self): if self.webChannel() is not None: objects = {obj.name: obj for obj in self._objects} self.webChannel().registerObjects(objects) _script = """ {% for obj in objects %} var {{obj}}; {% endfor %} new QWebChannel(qt.webChannelTransport, function (channel) { {% for obj in objects %} {{obj}} = channel.objects.{{obj}}; {% endfor %} }); """ self.runJavascript(Template(_script).render(objects=objects.keys())) for obj in self._objects: if isinstance(obj, Element): self.runJavascript(obj.script())class Helper(Element): xpathClicked = QtCore.pyqtSignal(str) def script(self): js = "" file = QtCore.QFile(os.path.join(CURRENT_DIR, "xpath_from_element.js")) if file.open(QtCore.QIODevice.ReadOnly): content = file.readAll() file.close() js = content.data().depre() js += """ document.addEventListener('click', function(e) { e = e || window.event; var target = e.target || e.srcElement; var xpath = Elements.DOMPath.xPath(target, false); {{name}}.receive_xpath(xpath); }, false);""" return Template(js).render(name=self.name) @QtCore.pyqtSlot(str) def receive_xpath(self, xpath): self.xpathClicked.emit(xpath)if __name__ == "__main__": import sys app = QtWidgets.QApplication(sys.argv) xpath_helper = Helper("xpath_helper") xpath_helper.xpathClicked.connect(lambda xpath: print("clicked", xpath)) view = QtWebEngineWidgets.QWebEngineView() page = WebEnginePage() page.add_object(xpath_helper) view.setPage(page) view.load(QtCore.QUrl("https://www.qt.io")) view.show() sys.exit(app.exec_())xpath_from_element.js
// Copyright 2018 The Chromium Authors. All rights reserved.// Use of this source pre is governed by a BSD-style license that can be// found in the LICENSE file.Elements = {};Elements.DOMPath = {};Elements.DOMPath.xPath = function (node, optimized) { if (node.nodeType === Node.document_NODE) { return '/'; } const steps = []; let contextNode = node; while (contextNode) { const step = Elements.DOMPath._xPathValue(contextNode, optimized); if (!step) { break; } // Error - bail out early. steps.push(step); if (step.optimized) { break; } contextNode = contextNode.parentNode; } steps.reverse(); return (steps.length && steps[0].optimized ? '' : '/') + steps.join('/');};Elements.DOMPath._xPathValue = function (node, optimized) { let ownValue; const ownIndex = Elements.DOMPath._xPathIndex(node); if (ownIndex === -1) { return null; } // Error. switch (node.nodeType) { case Node.ELEMENT_NODE: if (optimized && node.getAttribute('id')) { return new Elements.DOMPath.Step('/Elements.DOMPath._xPathIndex = function (node) { // Returns -1 in case of error, 0 if no siblings matching the same expression, // <XPath index among the same expression-matching sibling nodes> otherwise. function areNodesSimilar(left, right) { if (left === right) { return true; } if (left.nodeType === Node.ELEMENT_NODE && right.nodeType === Node.ELEMENT_NODE) { return left.localName === right.localName; } if (left.nodeType === right.nodeType) { return true; } // XPath treats CDATA as text nodes. const leftType = left.nodeType === Node.CDATA_SECTION_NODE ? Node.TEXT_NODE : left.nodeType; const rightType = right.nodeType === Node.CDATA_SECTION_NODE ? Node.TEXT_NODE : right.nodeType; return leftType === rightType; } const siblings = node.parentNode ? node.parentNode.children : null; if (!siblings) { return 0; } // Root node - no siblings. let hasSameNamedElements; for (let i = 0; i < siblings.length; ++i) { if (areNodesSimilar(node, siblings[i]) && siblings[i] !== node) { hasSameNamedElements = true; break; } } if (!hasSameNamedElements) { return 0; } let ownIndex = 1; // XPath indices start with 1. for (let i = 0; i < siblings.length; ++i) { if (areNodesSimilar(node, siblings[i])) { if (siblings[i] === node) { return ownIndex; } ++ownIndex; } } return -1; // An error occurred: |node| not found in parent's children.};Elements.DOMPath.Step = class { constructor(value, optimized) { this.value = value; this.optimized = optimized || false; } toString() { return this.value; }};
