我是 JavaFx 的新手,并且不熟悉在当前阶段使用 filechooser 来获取文件名和文件路径。
我创建了测试代码来显示我遇到的问题......
test_main.java
package view;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class test_main extends Application {
@Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("/view/Sample.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
这是我在同一个 View 包中的 sample.fxml 页面:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane fx:id="sample_page" prefHeight="681.0" prefWidth="503.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="view.SampleController">
<children>
<Button fx:id="btn_import_file" layoutX="403.0" layoutY="532.0" mnemonicParsing="false" text="Import File" />
</children>
</AnchorPane>
这是我的 SampleController.java 类:
package view;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;
import javafx.stage.FileChooser;
import java.io.File;
public class SampleController implements Initializable {
@FXML
private AnchorPane samplePage;
@FXML
private Button btn_test_dialog;
//this tests the operation of the alert dialog
//private Stage export_chooser_stage;
@FXML
private Button export_posts_all;
// this tests the file path select
@FXML
private Button btnImportFile;
// this tests the import file path and name.
//===================================================================================================================
/*
* This method will initialiise the UI
*/
@Override
public void initialize(URL url, ResourceBundle rb)
{
//--------------------------------------------------------------------------------------------------------------------
/*
* This is the btn_import_file.setOnAction((event)
*/
btnImportFile.setOnAction((event) ->
{
Stage primaryStage=(Stage) samplePage.getScene().getWindow();
//Stage primaryStage=new Stage();
primaryStage.setTitle("JavaFX App");
FileChooser fileChooser = new FileChooser();
Button button = new Button("Select File");
button.setOnAction(e -> {
File selectedFile = fileChooser.showOpenDialog(primaryStage);
String FileNamePath=selectedFile.toString();
System.out.println("File name and path to file :"+FileNamePath);
});
//VBox vBox = new VBox(button);
//Scene scene = new Scene(vBox, 960, 600);
//primaryStage.setScene(sample_page.getScene());
primaryStage.getScene();
primaryStage.show();
});
// this closes the btn_test_dialog.setOnAction((event) -> event
}// close public void initialize(URL url, ResourceBundle rb)
}// close public class SampleController implements Initializable
会发生什么:
1.页面加载并显示“导入文件”按钮
- 当一个 onClick 的“导入文件”没有任何反应。
onClick“导入文件”时的预期行为应该是:
操作系统文件选择对话框应出现在与“导入文件”按钮相同的阶段上方。选择文件和路径应在控制台中打印文件名和文件路径:
显然我的代码存在问题,因为我是 Java FX 的新手。
有人能帮助我吗?