我有一个JavaFx TableView,每一行都有一个带删除按钮的列,点击该按钮时删除TableRow ,以及H2数据库中的相应条目 通过Hibernate 。
到目前为止,我没有得到任何东西。按钮点击没有任何反应。即使我手动分配项主键,如下所示:
NewBeautifulKiwi toDelete = (NewBeautifulKiwi) session.get(NewBeautifulKiwi.class, 97);
请帮我做这项工作;按钮单击以删除它所属的TableRow以及填充该特定TableRow的数据库项。到目前为止,ButtonClick上根本没有任何事情发生。
提前谢谢。
聚苯乙烯。
按钮也会打印在列为空的位置。如果你帮助我解决了这个问题,并且只有行数据上的按钮
,那也会有所帮助课程提取:
public class HomeController implements Initializable {
@FXML
public static TableView<NewBeautifulKiwi> KIWI_TABLE;
@FXML
private TableColumn<NewBeautifulKiwi, Object> KiwiAction;
// Initializes the controller class.
@Override
public void initialize(URL url, ResourceBundle rb) {
KiwiAction.setCellValueFactory(new PropertyValueFactory<NewBeautifulKiwi, Object>("KiwiAction"));
KiwiAction.setCellFactory(new Callback<TableColumn<NewBeautifulKiwi, Object>, TableCell<NewBeautifulKiwi, Object>>() {
@Override
public TableCell<NewBeautifulKiwi, Object> call(TableColumn<NewBeautifulKiwi, Object> param) {
final Button button;
Image image = new Image(getClass().getResourceAsStream("/MediaTools/Error.png"));
final ImageView imageView = new ImageView();
imageView.setFitHeight(16);
imageView.setFitWidth(16);
imageView.setImage(image);
button = new Button("", imageView);
final TableCell<NewBeautifulKiwi, Object> cell = new TableCell<NewBeautifulKiwi, Object>() {
@Override
public void updateItem(Object item, boolean empty) {
if (item != null) {
super.updateItem(item, empty);
final VBox vbox = new VBox(0);
button.setAlignment(Pos.CENTER);
button.maxWidth(32);
button.getStyleClass().add("deleteButton");
final TableCell<NewBeautifulKiwi, Object> c = this;
button.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
TableRow tableRow = c.getTableRow();
NewBeautifulKiwi item = (NewBeautifulKiwi) tableRow.getTableView().getItems().get(tableRow.getIndex());
Session session = HibernateUtil.getSessionFactory().openSession();
session.beginTransaction();
NewBeautifulKiwi toDelete = (NewBeautifulKiwi) session.get(NewBeautifulKiwi.class, item);
session.delete(toDelete);
session.getTransaction().commit();
session.flush();
session.close();
System.out.println("Deleted");
}
});
vbox.getChildren().add(button);
setGraphic(vbox);
}
}
};
cell.setGraphic(button);
return cell;
}
});
});
Kiwi.setCellValueFactory(new PropertyValueFactory<NewBeautifulKiwi, String>("Kiwi"));
}