Question

我已阅读有关编辑TableView的所有主题，但我无法找到适合我案例的解决方案。我提出这个问题，因为我有一个小应用程序，处理ScoreBoardCard，这是mysql数据库表。因此，当我进入我应该编辑TableView的阶段时，我按下我想要编辑的列没有任何事情发生，更新db的代码什么也没做，因为我没有更改单元格。这是代码我的舞台：

public class UnosCiljanihVrednosti  {

 static Stage stgAdminAdding = new Stage();

  static private ObservableList<Scb>data1;

  ViewAdmin object=new ViewAdmin();

  public static TableView<Scb> table1;
  static String c1; 
  static TextField perspektiva;
  static TextField cilj;
  static TextField mera;
  static  TextField ciljanavrednost;
  static ComboBox comboBox;
  static ResultSet rs = null;

public static void unosCiljanihVrednosti() {

     BorderPane root = new BorderPane();
      HBox hbox = new HBox();
    Label naslov = new Label("PERFORMANSE-NOVE CILJANE VREDNOSTI");
    naslov.setFont(new Font(24));
    hbox.setAlignment(Pos.CENTER);
    hbox.getChildren().add(naslov);
    hbox.setAlignment(Pos.CENTER);
    Insets ins1 = new Insets(5, 10, 10, 10);
    hbox.setPadding(ins1);






    javafx.scene.layout.VBox vboxMenuAdmin = new javafx.scene.layout.VBox();
    vboxMenuAdmin.setAlignment(Pos.CENTER);
    Insets ins = new Insets(5, 10, 10, 10);
    vboxMenuAdmin.setPadding(ins);
    Button btSacuvaj = new Button("Sačuvaj");
    btSacuvaj.setMinSize(100, 50);
    btSacuvaj.setOnAction((ActionEvent event) -> {
       sacuvaj();
    });

    HBox hboxTabela=new HBox();
    Insets ins3 = new Insets(50,850, 50, 50);
    hboxTabela.setPadding(ins3);
    table1 = new TableView<>();
    data1= FXCollections.observableArrayList();
     loadDataFromDataBase(table1);

    table1.setEditable(true);
    table1.getSelectionModel().setCellSelectionEnabled(true);

    TableColumn<Scb, String> column1=new TableColumn("Perspektiva");
    column1.setMinWidth(350);
    column1.setCellValueFactory(new PropertyValueFactory<>("perspektiva"));


    TableColumn<Scb, String> column2=new TableColumn("Cilj");
    column2.setMinWidth(400);
    column2.setCellValueFactory(new PropertyValueFactory("cilj"));


    TableColumn<Scb, String> column3=new TableColumn("Mera");
    column3.setMinWidth(350);
    column3.setCellValueFactory(new PropertyValueFactory("mera"));

    TableColumn<Scb, Double> column4=new TableColumn("Ciljana Vrednost");
    column4.setMinWidth(400);
    column4.setCellValueFactory(new PropertyValueFactory("ciljanavrednost"));

    table1.getColumns().addAll(column1,column2,column3,column4);


    column4.setOnEditCommit(event -> {
Scb scb = event.getRowValue();
scb.setCiljanavrednost(event.getNewValue());

updateData("ciljanavrednost", event.getNewValue(), scb.getMera());
});

    HBox hbox4=new HBox();
    Insets ins4 = new Insets(50,350, 50, 50);
    hbox4.setPadding(ins4);



    HBox hboxDugmici=new HBox();
      Insets ins2 = new Insets(50, 50, 50, 1450);
    hboxDugmici.setPadding(ins2);
    hboxDugmici.setSpacing(20);
    hboxDugmici.getChildren().addAll(btSacuvaj);

    HBox donjiHBox=new HBox();
    donjiHBox.getChildren().addAll(hboxDugmici);
    //Image logo=new Image("logo.png");
    //ImageView vLogo=new ImageView(logo);
    Button otvaranje = new Button("Dugme");
   // vboxMenuAdmin.getChildren().addAll(btDodavanje, btBrisanje);
   // menu.getChildren().add(menuBar);
    root.setTop(hbox);

    root.setCenter(table1);
    root.setBottom(donjiHBox);
    root.setRight(hbox4);
    Scene scene = new Scene(root, 1920, 1000);

  /*   ViewAdmin.stgAdmin.setTitle("");
    ViewAdmin.stgAdmin.setResizable(false);
    ViewAdmin.stgAdmin.setScene(scene);
    ViewAdmin.stgAdmin.show();
    */
    stgAdminDodavanje.setTitle("");
    stgAdminDodavanje.setResizable(false);
    stgAdminDodavanje.setScene(scene);
    stgAdminDodavanje.show();

}

private static void sacuvaj() {
   stgAdminDodavanje.close();
   ViewAdmin.stgAdmin.show();

}

public static void loadDataFromDataBase(TableView table){
     try {
         Class.forName("com.mysql.jdbc.Driver");
        CONNECTION =DriverManager.getConnection(URL, USERNAME, PASSWORD);
         data1=FXCollections.observableArrayList();
         ResultSet rs= CONNECTION.createStatement().executeQuery("SELECT* FROM bsc");
         while(rs.next()){
             data1.add(new Scb(rs.getString("perspektiva"),rs.getString("cilj"),rs.getString("mera"),rs.getDouble("ciljanavrednost")));
             System.out.println(rs.getString("cilj"));
         }

         CONNECTION.close();

    } catch (ClassNotFoundException | SQLException ex) {
         Logger.getLogger(AzuriranjePostojecihPerformansi.class.getName()).log(Level.SEVERE, null, ex);
     }
     table.setItems(data1);

 }


 public void getRow() {

    TablePosition pos = table1.getSelectionModel().getSelectedCells().get(0);
    int row = pos.getRow();
    TableColumn col = pos.getTableColumn();

    String data1 = (String) col.getCellObservableValue(row).getValue();
    System.out.println(data1);

}
private static void updateData(String column, Double newValue, String id) {
    try (
    Connection connection = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/cs102-projekat", "root", "");
    PreparedStatement stmt = connection.prepareStatement("UPDATE bsc SET  ciljanavrednost = ? WHERE  mera = ?");
) {

    stmt.setDouble(1, newValue);
    stmt.setString(2, id);
    stmt.execute();
} catch (SQLException ex) {
    System.err.println("Error");
    // if anything goes wrong, you will need the stack trace:
    ex.printStackTrace(System.err);
}
}






}

Answer 1

试试这个：

column4.setCellFactory(TextFieldTableCell.forTableColumn());
        column4.setOnEditCommit(
                new EventHandler<CellEditEvent<Scb, Double>>() {
            @Override
            public void handle(CellEditEvent<Scb, Double> t) {
                ((Scb) t.getTableView().getItems().get(
                        t.getTablePosition().getRow())).setYourField(t.getNewValue());
            //updateYourData((Scb) t.getRowValue());
            } });

TableView在javafx中编辑DB表

1 个答案: