自动填充Java中的WebView字段

将值(登录凭据)输入到屏幕黄色部分的JavaFX字段中,然后在登录页面出现时自动在WebView(屏幕的白色部分)中发布(使用w3c dom api).

import javafx.application.Application;
import javafx.beans.property.*;
import javafx.beans.value.*;
import javafx.event.*;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.scene.web.*;
import javafx.stage.Stage;
import org.w3c.dom.*;
import org.w3c.dom.html.*;

public class WebViewFormPost extends Application {
    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage stage) {
        final TextField fxUsername = new TextField();
        fxUsername.setPrefColumnCount(20);
        final TextField fxPassword = new PasswordField();

        final BooleanProperty loginAttempted = new SimpleBooleanProperty(false);

        final WebView webView = new WebView();
        webView.setPrefWidth(1000);
        final WebEngine engine = webView.getEngine();
        engine.documentproperty().addListener(new changelistener<Document>() {
            @Override
            public void changed(ObservableValue<? extends Document> ov,Document oldDoc,Document doc) {
                if (doc != null && !loginAttempted.get()) {
                    if (doc.getElementsByTagName("form").getLength() > 0) {
                        HTMLFormElement form = (HTMLFormElement) doc.getElementsByTagName("form").item(0);
                        if ("/oam/server/sso/auth_cred_submit".equals(form.getAttribute("action"))) {
                            HTMLInputElement username = null;
                            HTMLInputElement password = null;
                            NodeList nodes = form.getElementsByTagName("input");
                            for (int i = 0; i < nodes.getLength(); i++) {
                                HTMLInputElement input = (HTMLInputElement) nodes.item(i);
                                switch (input.getName()) {
                                    case "ssousername":
                                        username = input;
                                        break;
                                    case "password":
                                        password = input;
                                        break;
                                }
                            }

                            if (username != null && password != null) {
                                loginAttempted.set(true);
                                username.setValue(fxUsername.getText());
                                password.setValue(fxPassword.getText());
                                form.submit();
                            }
                        }
                    }
                }
            }
        });
        engine.getLoadWorker().exceptionproperty().addListener(new changelistener<Throwable>() {
            @Override
            public void changed(ObservableValue<? extends Throwable> ov,Throwable oldException,Throwable exception) {
                System.out.println("Load Exception: " + exception);
            }
        });

        GridPane inputGrid = new GridPane();
        inputGrid.setHgap(10);
        inputGrid.setVgap(10);
        inputGrid.addRow(0,new Label("Username: "),fxUsername);
        inputGrid.addRow(0,new Label("Password: "),fxPassword);

        Button fxLoginButton = new Button("Login to Oracle Forums");
        fxLoginButton.setonAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent t) {
                if (notEmpty(fxPassword.getText()) && notEmpty(fxPassword.getText())) {
                    loginAttempted.set(false);
                    engine.load("https://forums.oracle.com/community/developer/english/java/javafx/login.jspa");
                }
            }
        });
        fxLoginButton.setDefaultButton(true);
        ProgressIndicator fxLoadProgress = new ProgressIndicator(0);
        fxLoadProgress.progressproperty().bind(webView.getEngine().getLoadWorker().progressproperty());
        fxLoadProgress.visibleproperty().bind(webView.getEngine().getLoadWorker().runningproperty());

        HBox loginPane = new HBox(10);
        loginPane.getChildren().setAll(
                fxLoginButton,fxLoadProgress
        );

        final VBox layout = new VBox(10);
        layout.setStyle("-fx-background-color: cornsilk; -fx-padding: 10;");
        layout.getChildren().addAll(
                new Label("Enter your Oracle Web Account credentials"),inputGrid,loginPane,webView
        );
        VBox.setVgrow(webView,Priority.ALWAYS);

        stage.setScene(new Scene(layout));
        stage.show();

        fxUsername.requestFocus();
    }

    private boolean notEmpty(String s) {
        return s != null && !"".equals(s);
    }
}

上述应用程序改编自Submitting HTML Forms with JavaFX Webview以前的Oracle论坛问题.

如果您没有Oracle技术网络帐户来测试上述程序,可以在此处注册一个：https://myprofile.oracle.com/EndUser/faces/profile/createUser.jspx.

使用JQuery发布到WebView

另一种实现,我实际上更喜欢使用JavaScript jQuery来内省DOM并执行帖子而不是使用Java DOM apis.有一个使用jQuery on any arbitrary webpage hosted in a WebView的示例.因此,您可以将来自此自动WebView表单帖子和jQuery托管的WebView示例的想法组合在一起,以创建使用JQuery执行帖子的版本.