加载任意位置的fxml文件

package sample.fxml; import java.io.File; import java.io.FileFilter; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.InputStream; import java.net.URL; import java.util.ArrayList; import java.util.List; import javafx.application.Application; import javafx.collections.FXCollections; import javafx.collections.ObservableList; import javafx.event.ActionEvent; import javafx.fxml.FXML; import javafx.fxml.FXMLLoader; import javafx.fxml.JavaFXBuilderFactory; import javafx.scene.Scene; import javafx.scene.control.ListView; import javafx.scene.control.TextField; import javafx.scene.layout.Pane; import javafx.stage.DirectoryChooser; import javafx.stage.Modality; import javafx.stage.Stage; public class FXMLMain extends Application { private URL location; private Stage stage; public Stage getStage(){ return stage; } public Pane loadFXML(InputStream in) { FXMLLoader loader = new FXMLLoader(); loader.setBuilderFactory(new JavaFXBuilderFactory()); loader.setLocation(location); try { Pane pane = (Pane)loader.load(in); Page page = (Page)loader.getController(); page.setMain(this); return pane; } catch (Exception ex) { ex.printStackTrace(); return null; } } public void popupWindow(Pane root, Stage stage) { showStage(root, stage, this.stage); } private void showStage(Pane root, Stage stage, Stage parent) { Scene scene = new Scene(root); stage.setScene(scene); stage.sizeToScene(); stage.setResizable(false); if (parent != null) { stage.initModality(Modality.WINDOW_MODAL); stage.initOwner(parent); } stage.setScene(scene); stage.sizeToScene(); stage.show(); } @Override public void start(Stage stage) throws Exception { String fxml = "FxmlSelection.fxml"; location = FXMLMain.class.getResource(fxml); Pane pane = loadFXML(FXMLMain.class.getResourceAsStream(fxml)); if (pane == null) return; showStage(pane, stage, null); this.stage = stage; } public static void main(String[] args) { Application.launch(FXMLMain.class, (java.lang.String[])null); } }