如何在Java中使用WebKit从加载的页面中获取html

import javafx.application.Application;
import javafx.concurrent.Worker;
import javafx.scene.Scene;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
import netscape.javascript.JSObject;

public class WebViewExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        WebView webView = new WebView();
        WebEngine webEngine = webView.getEngine();

        // 监听页面加载完成事件
        webEngine.getLoadWorker().stateProperty().addListener((observable, oldValue, newValue) -> {
            if (newValue == Worker.State.SUCCEEDED) {
                // 页面加载完成后执行JavaScript代码获取HTML内容
                String html = (String) webEngine.executeScript("document.documentElement.outerHTML");
                System.out.println(html);
            }
        });

        // 加载页面
        webEngine.load("https://www.example.com");

        primaryStage.setScene(new Scene(webView, 800, 600));
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}