San*_*wat 9 javascript javafx javafx-2
我试图在JavaFX按钮单击事件上从JavaFX WebView调用JavaScript函数.
我使用以下代码,但它不起作用:
try {
File file = new File("F:\\inputfile\\hello.htm");
WebEngine webengine = webview.getEngine();
webengine.load(file.toURI().toURL().toString());
} catch(Exception ex) {
ex.printStackTrace();
}
在任何按钮单击我想test()在html文件中执行JavaScript方法:
webengine.executeScript("test()");
而html文件中的JavaScript方法是:
<script language="javascript">
function test()
{
window.scrollBy(0, 20);
}
</script>
Mah*_*raa 13
我使用你的代码如下,它的工作原理
package org.im.oor;
import java.io.File;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
/**
*
* @author maher
*/
public class main extends Application {
@Override
public void start(Stage primaryStage) {
Button btn = new Button();
btn.setText("fire JS");
btn.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
if (webengine != null)
{
webengine.executeScript("test()");
}
}
});
publishServices();
StackPane root = new StackPane();
// root.getChildren().add(btn);
HBox hh = new HBox();
hh.getChildren().add(btn);
hh.getChildren().add(webview);
root.getChildren().add(hh);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
}
private WebEngine webengine;
private static WebView webview;
private void publishServices() {
try {
webview = new WebView();
webview.setVisible(true);
webengine = webview.getEngine();
webengine.setJavaScriptEnabled(true);
File file = new File("c:\\hello.html");
System.out.println(file.exists() + " file exitence");
webengine.load(file.toURI().toURL().toString());
} catch (Exception ex) {
System.err.print("error " + ex.getMessage());
ex.printStackTrace();
}
}
/**
* The main() method is ignored in correctly deployed JavaFX application.
* main() serves only as fallback in case the application can not be
* launched through deployment artifacts, e.g., in IDEs with limited FX
* support. NetBeans ignores main().
*
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
c:\ hello.html的内容
<html>
<header>
<script language="javascript">
function test()
{
//window.scrollBy(0,20);
document.body.style.backgroundColor="#00f3f3";
alert('test');
}
</script>
</header>
<body>test
<a href='#' onclick="test();">fire for test</a>
</body>
</html>
检查此代码并让我知道..只是一些点:
检查你是否真的可以访问该文件..
让你编程简单,如果其工作JS <==> JavaFX的测试,那么你可以更进一步,使用更先进的功能,JS