我试图在JavaFX按钮点击事件中从JavaFX WebView调用JavaScript函数。
我正在使用以下代码,但它无效:
try {
File file = new File("F:\\inputfile\\hello.htm");
WebEngine webengine = webview.getEngine();
webengine.load(file.toURI().toURL().toString());
} catch(Exception ex) {
ex.printStackTrace();
}
在任何按钮上单击我想在html文件中执行test()
JavaScript方法:
webengine.executeScript("test()");
html文件中的JavaScript方法是:
<script language="javascript">
function test()
{
window.scrollBy(0, 20);
}
</script>
答案 0 :(得分:10)
我使用了您的代码如下,它可以正常工作
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>
检查此代码并告诉我们.. 只是关于这一点:
检查您是否真的可以访问该文件..
让你的程序变得简单,以测试它是否正在运行JS&lt; ==&gt; JavaFX,然后你可以进一步使用更高级的JS函数
答案 1 :(得分:0)
我试图使用 JavaFX 自动登录到一个站点。在我的 Windows 开发机器上,我能够找到控件并将其转换为 HtmlInputElement 或 HtmlButtonElementImpl 并单击该项目。在 linux 上移动到 openjfx 11.0.2,这给了我一个未实现的链接错误 一段时间后,我找到了几个帖子,我能够将 javascript 注入页面,然后执行 javascript 以单击按钮。
final String injectedScript = "script = document.createElement('script');\n" +
"var head = document.getElementsByTagName(\"head\")[0];\n" +
"script.type = 'text/javascript';\n" +
"var t = document.createTextNode(\"function jsclick(ctrl){document.getElementById(ctrl).click()}\");\n" +
"script.appendChild(t);" +
"head.appendChild(script);";
webEngine.documentProperty().addListener((ov, oldDoc, doc) -> {
if (doc != null ) {
webEngine.executeScript(injectedScript);
processLoginPage(webEngine, doc);
}
});
处理表单时,提交它(做一个form.submit不起作用):
Element d = doc.getElementById("logon_button");
//HTMLButtonElementImpl b = ((HTMLButtonElementImpl) d);
//b.click();
webEngine.executeScript("jsclick('logon_button')");