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JavaFX FileChooser文件选择器、DirectoryChooser目录选择器

作者：Monodyee | 2024-02-18 10:06:43

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javafx.stage.directorychooser;

参考：https://www.yiibai.com/javafx/javafx_filechooser.html

参考：https://blog.csdn.net/dorma_bin/article/details/78856952

创建一个窗口，在窗口中放置两个按键：“Choose File”与“Choose Folder”。

当“Choose File”按键发生鼠标点击事件，打开文件选择器。如果用户选择了某一个文件，并点击“打开”，在控制台输出该文件的绝对路径。

当“Choose Folder”按键发生鼠标点击事件，打开目录选择器。如果用户选择了某一个文件，并点击“选择文件夹”，在控制台输出该文件的绝对路径。

  1.  1 import java.io.File;
  2.  2 
  3.  3 import javafx.application.Application;
  4.  4 import javafx.event.ActionEvent;
  5.  5 import javafx.event.EventHandler;
  6.  6 import javafx.geometry.Insets;
  7.  7 import javafx.geometry.Pos;
  8.  8 import javafx.scene.Scene;
  9.  9 import javafx.scene.control.Button;
  10. 10 import javafx.scene.layout.GridPane;
  11. 11 import javafx.stage.DirectoryChooser;
  12. 12 import javafx.stage.FileChooser;
  13. 13 import javafx.stage.FileChooser.ExtensionFilter;
  14. 14 import javafx.stage.Stage;
  15. 15 
  16. 16 public class Main extends Application {
  17. 17 
  18. 18     public static void main(String[] args) {
  19. 19         launch(args);
  20. 20     }
  21. 21     
  22. 22     @Override
  23. 23     public void start(Stage primaryStage) throws Exception {
  24. 24         // Create a pane to hold a button
  25. 25         GridPane pane = new GridPane();
  26. 26         pane.setStyle("-fx-border-color: green;");
  27. 27         pane.setAlignment(Pos.CENTER);
  28. 28         pane.setPadding(new Insets(10, 10, 10, 10));
  29. 29         pane.setHgap(10);
  30. 30         pane.setVgap(10);
  31. 31         
  32. 32         // Create a button to choose a file
  33. 33         Button btChooseFile = new Button("Choose File");
  34. 34         pane.add(btChooseFile, 0, 0);
  35. 35         
  36. 36         // Create a button to choose a directory
  37. 37         Button btChooseDirectory = new Button("Choose Folder");
  38. 38         pane.add(btChooseDirectory, 1, 0);
  39. 39                 
  40. 40         // Set the primary stage properties
  41. 41         primaryStage.setScene(new Scene(pane, 400, 200));
  42. 42         primaryStage.setTitle("Starting...");
  43. 43         primaryStage.setResizable(false);
  44. 44         primaryStage.show();
  45. 45         
  46. 46         // 
  47. 47         btChooseFile.setOnAction(new EventHandler<ActionEvent>() {
  48. 48             @Override
  49. 49             public void handle(ActionEvent event) {
  50. 50                 FileChooser fileChooser = new FileChooser();
  51. 51                 fileChooser.setTitle("Choose File");
  52. 52 //                fileChooser.getExtensionFilters().add(new ExtensionFilter("Text Files", "*.txt"));
  53. 53 //                fileChooser.getExtensionFilters().add(new ExtensionFilter("All Files", "*.*"));
  54. 54                 fileChooser.getExtensionFilters().addAll(new ExtensionFilter("Text Files", "*.txt"), new ExtensionFilter("All Files", "*.*"));
  55. 55                 File file = fileChooser.showOpenDialog(primaryStage);
  56. 56                 if (file != null) {
  57. 57                     System.out.println(file.getAbsolutePath());
  58. 58                 }
  59. 59             }
  60. 60         });
  61. 61         
  62. 62         btChooseDirectory.setOnAction(new EventHandler<ActionEvent>() {
  63. 63             @Override
  64. 64             public void handle(ActionEvent event) {
  65. 65                 DirectoryChooser directoryChooser = new DirectoryChooser();
  66. 66                 directoryChooser.setTitle("Choose Folder");
  67. 67                 File directory = directoryChooser.showDialog(new Stage());
  68. 68                 if (directory != null) {
  69. 69                     System.out.println(directory.getAbsolutePath());
  70. 70                 }
  71. 71             }
  72. 72         });
  73. 73     }
  74. 74 }

运行程序的UI：

点击按键“Choose File”，控制台的输出(有异常？)，以及UI：

  1. Qt: Untested Windows version 10.0 detected!
  2. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  3. log4cplus:ERROR Please initialize the log4cplus system properly.
  4. Qt: Untested Windows version 10.0 detected!
  5. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  6. log4cplus:ERROR Please initialize the log4cplus system properly.
  7. Qt: Untested Windows version 10.0 detected!
  8. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  9. log4cplus:ERROR Please initialize the log4cplus system properly.
  10. Qt: Untested Windows version 10.0 detected!
  11. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  12. log4cplus:ERROR Please initialize the log4cplus system properly.
  13. Qt: Untested Windows version 10.0 detected!
  14. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  15. log4cplus:ERROR Please initialize the log4cplus system properly.
  16. Qt: Untested Windows version 10.0 detected!
  17. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  18. log4cplus:ERROR Please initialize the log4cplus system properly.
  19. Qt: Untested Windows version 10.0 detected!
  20. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  21. log4cplus:ERROR Please initialize the log4cplus system properly.
  22. Qt: Untested Windows version 10.0 detected!
  23. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  24. log4cplus:ERROR Please initialize the log4cplus system properly.
  25. Qt: Untested Windows version 10.0 detected!
  26. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  27. log4cplus:ERROR Please initialize the log4cplus system properly.
  28. Qt: Untested Windows version 10.0 detected!
  29. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  30. log4cplus:ERROR Please initialize the log4cplus system properly.
  31. Qt: Untested Windows version 10.0 detected!
  32. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  33. log4cplus:ERROR Please initialize the log4cplus system properly.
  34. Qt: Untested Windows version 10.0 detected!
  35. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  36. log4cplus:ERROR Please initialize the log4cplus system properly.
  37. Qt: Untested Windows version 10.0 detected!
  38. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  39. log4cplus:ERROR Please initialize the log4cplus system properly.
  40. Qt: Untested Windows version 10.0 detected!
  41. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  42. log4cplus:ERROR Please initialize the log4cplus system properly.
  43. Qt: Untested Windows version 10.0 detected!
  44. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  45. log4cplus:ERROR Please initialize the log4cplus system properly.
  46. Qt: Untested Windows version 10.0 detected!
  47. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  48. log4cplus:ERROR Please initialize the log4cplus system properly.
  49. Qt: Untested Windows version 10.0 detected!
  50. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  51. log4cplus:ERROR Please initialize the log4cplus system properly.
  52. Qt: Untested Windows version 10.0 detected!
  53. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  54. log4cplus:ERROR Please initialize the log4cplus system properly.
  55. Qt: Untested Windows version 10.0 detected!
  56. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  57. log4cplus:ERROR Please initialize the log4cplus system properly.
  58. Qt: Untested Windows version 10.0 detected!
  59. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  60. log4cplus:ERROR Please initialize the log4cplus system properly.

选择某一个文件，并点击按键“打开”，控制台输出：

J:\PrtSc\20190321\33.png

点击按键“Choose Folder”，控制台的输出(有异常？)，以及UI：

  1. Qt: Untested Windows version 10.0 detected!
  2. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  3. log4cplus:ERROR Please initialize the log4cplus system properly.
  4. Qt: Untested Windows version 10.0 detected!
  5. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  6. log4cplus:ERROR Please initialize the log4cplus system properly.
  7. Qt: Untested Windows version 10.0 detected!
  8. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  9. log4cplus:ERROR Please initialize the log4cplus system properly.
  10. Qt: Untested Windows version 10.0 detected!
  11. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  12. log4cplus:ERROR Please initialize the log4cplus system properly.
  13. Qt: Untested Windows version 10.0 detected!
  14. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  15. log4cplus:ERROR Please initialize the log4cplus system properly.
  16. Qt: Untested Windows version 10.0 detected!
  17. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  18. log4cplus:ERROR Please initialize the log4cplus system properly.
  19. Qt: Untested Windows version 10.0 detected!
  20. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  21. log4cplus:ERROR Please initialize the log4cplus system properly.
  22. Qt: Untested Windows version 10.0 detected!
  23. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  24. log4cplus:ERROR Please initialize the log4cplus system properly.
  25. Qt: Untested Windows version 10.0 detected!
  26. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  27. log4cplus:ERROR Please initialize the log4cplus system properly.
  28. Qt: Untested Windows version 10.0 detected!
  29. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  30. log4cplus:ERROR Please initialize the log4cplus system properly.
  31. Qt: Untested Windows version 10.0 detected!
  32. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  33. log4cplus:ERROR Please initialize the log4cplus system properly.
  34. Qt: Untested Windows version 10.0 detected!
  35. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  36. log4cplus:ERROR Please initialize the log4cplus system properly.
  37. Qt: Untested Windows version 10.0 detected!
  38. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  39. log4cplus:ERROR Please initialize the log4cplus system properly.
  40. Qt: Untested Windows version 10.0 detected!
  41. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  42. log4cplus:ERROR Please initialize the log4cplus system properly.
  43. Qt: Untested Windows version 10.0 detected!
  44. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  45. log4cplus:ERROR Please initialize the log4cplus system properly.
  46. Qt: Untested Windows version 10.0 detected!
  47. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  48. log4cplus:ERROR Please initialize the log4cplus system properly.
  49. Qt: Untested Windows version 10.0 detected!
  50. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  51. log4cplus:ERROR Please initialize the log4cplus system properly.
  52. Qt: Untested Windows version 10.0 detected!
  53. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  54. log4cplus:ERROR Please initialize the log4cplus system properly.
  55. Qt: Untested Windows version 10.0 detected!
  56. log4cplus:ERROR No appenders could be found for logger (AdSyncNamespace).
  57. log4cplus:ERROR Please initialize the log4cplus system properly.

选择某一个文件夹，并点击按键“选择文件夹”，控制台输出：

J:\PrtSc\20190321
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