Problem with JavaFX WebView about Access-Control-Allow-Origin

I use a javafx webview in my plugin, and I have a problem in cross domain.

I use :

System.setProperty("sun.net.http.allowRestrictedHeaders", "true");


It works well in my demo:

public class App extends Application
{
    @Override
    public void start(Stage primaryStage) throws Exception
    {
        TrustManager trm = new X509TrustManager() {
            public X509Certificate[] getAcceptedIssuers() {return null;}
            public void checkClientTrusted(X509Certificate[] certs, String authType) {}
            public void checkServerTrusted(X509Certificate[] certs, String authType) {}
        };

        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, new TrustManager[] { trm }, null);
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
        WebView browser = new WebView();

        WebEngine webEngine = browser.getEngine();
        WebConsoleListener.setDefaultListener(new WebConsoleListener() {
            @Override
            public void messageAdded(WebView webView, String message, int lineNumber, String sourceId) {
                System.out.println("Console: [" + sourceId + ":" + lineNumber + "] " + message);
            }
        });
        webEngine.getLoadWorker().stateProperty()
            .addListener((obs, oldValue, newValue) -> {
                System.out.println("state property ->" + obs.toString());
                if (newValue == Worker.State.SUCCEEDED) {
                    System.out.println("finished loading");
                }
            }); // addListener()
        webEngine.getLoadWorker().exceptionProperty().addListener(new ChangeListener<Throwable>() {
            @Override
            public void changed(ObservableValue<? extends Throwable> ov, Throwable t, Throwable t1) {
                System.out.println("Received exception: "+t1.getMessage());
            }
        });
        webEngine.load(url);

        StackPane root = new StackPane();
        root.getChildren().add(browser);

        primaryStage.setScene(new Scene(root, 600, 600));
        primaryStage.show();
    }

    public static void main(String[] args)
    {
        System.setProperty("sun.net.http.allowRestrictedHeaders", "true");

        launch(args);
    }
}

but that doesn't works in the plugin, even if I added

System.setProperty("sun.net.http.allowRestrictedHeaders", "true");

before

webEngine.load(url);

and I log the info System.getProperty("sun.net.http.allowRestrictedHeaders"), the value is "true"



So, how to allow webview cross domain access