问JavaFX多次打开和关闭舞台的正确方法

EN

@FXML
void showSecondView(MouseEvent event) throws IOException {


               
                FXMLLoader loader = new FXMLLoader();

                loader.setLocation(Main.class.getResource("/View_FXML/generaRichiesta.fxml"));
                Pane secondPageLayout = loader.load();
                SecondController secCon = loader.getController();
             

                stage = new Stage();
                stage.setScene(new Scene(secondPageLayout));

             
                stage.setTitle("Second Stage");


                stage.show();

}

public void initialize(URL url, ResourceBundle resourceBundle) {
                         
        //sending request to server and calling the following function to update the
        //view withe the received object
        
       Platform.runLater(
            () -> {
               //setting the view node "textField" with the object received from server
               //if I print this value on console I always get the object correctly but
               //it is loaded only the first time. When i call this function from a button it always
               //works but I should do it manually
               textField.setText().receivedObject.toString(); 
              
            }
        );
}