通过JavaFX中的WebEngine，使用JS中的脚本将值插入密码字段

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 JavaFXWebEngineExample extends Application {

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

        // 加载网页
        webEngine.load("https://example.com/login.html");

        // 监听加载完成事件
        webEngine.getLoadWorker().stateProperty().addListener((observable, oldValue, newValue) -> {
            if (newValue == Worker.State.SUCCEEDED) {
                // 执行JS脚本
                JSObject window = (JSObject) webEngine.executeScript("window");
                window.setMember("javaApp", new JavaApp());
                webEngine.executeScript("javaApp.insertPassword('myPassword')");
            }
        });

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

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

    public class JavaApp {
        public void insertPassword(String password) {
            // 获取密码字段的DOM元素并插入值
            JSObject passwordField = (JSObject) webEngine.executeScript("document.getElementById('password')");
            passwordField.setMember("value", password);
        }
    }
}