我如何通过单击按钮清除带有 javaFX 的 WebView 的内容?
How i can clear the WebView's content with javaFX by clicking on a button?
我想知道如何通过使用javaFX点击一个按钮来清除webview的内容?那我该怎么做呢?例如:WebView1 包含 google 网页,同时单击按钮应该清除此页面
您可以通过加载一些空内容来清除网络视图:
webView.getEngine().loadContent("");
完整示例:
import java.util.regex.Pattern;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
public class WebBrowser extends Application {
private TextField textField ;
private WebView webView ;
@Override
public void start(Stage primaryStage) {
webView = new WebView();
textField = new TextField("https://www.google.com");
textField.setOnAction(e -> load());
load();
Button clearButton = new Button("Clear");
clearButton.setOnAction(e -> webView.getEngine().loadContent(""));
BorderPane root = new BorderPane(webView, new HBox(10, textField, clearButton), null, null, null);
textField.setPadding(new Insets(5));
root.setPadding(new Insets(5));
Scene scene = new Scene(root, 800, 600);
primaryStage.setScene(scene);
primaryStage.show();
}
private void load() {
String url = makeUrl(textField.getText()) ;
webView.getEngine().load(url);
textField.setText(url);
}
private String makeUrl(String text) {
if (Pattern.matches("[a-zA-Z]+:.+", text)) {
return text ;
} else return "http://"+text ;
}
public static void main(String[] args) {
launch(args);
}
}
我想知道如何通过使用javaFX点击一个按钮来清除webview的内容?那我该怎么做呢?例如:WebView1 包含 google 网页,同时单击按钮应该清除此页面
您可以通过加载一些空内容来清除网络视图:
webView.getEngine().loadContent("");
完整示例:
import java.util.regex.Pattern;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
public class WebBrowser extends Application {
private TextField textField ;
private WebView webView ;
@Override
public void start(Stage primaryStage) {
webView = new WebView();
textField = new TextField("https://www.google.com");
textField.setOnAction(e -> load());
load();
Button clearButton = new Button("Clear");
clearButton.setOnAction(e -> webView.getEngine().loadContent(""));
BorderPane root = new BorderPane(webView, new HBox(10, textField, clearButton), null, null, null);
textField.setPadding(new Insets(5));
root.setPadding(new Insets(5));
Scene scene = new Scene(root, 800, 600);
primaryStage.setScene(scene);
primaryStage.show();
}
private void load() {
String url = makeUrl(textField.getText()) ;
webView.getEngine().load(url);
textField.setText(url);
}
private String makeUrl(String text) {
if (Pattern.matches("[a-zA-Z]+:.+", text)) {
return text ;
} else return "http://"+text ;
}
public static void main(String[] args) {
launch(args);
}
}