Question

我使用TableView开发JavaFX应用程序，我想在其中显示来自MySQL数据库的数据。当我单击按钮显示所有数据时，在表视图中只显示一行，其中包含MySQL的行ID，其他列仍为空。

控制器：

public class FXMLDocumentController implements Initializable {
    private Label label;

    @FXML
    private TableView table;
    @FXML
    private TextField uname;
    @FXML
    private PasswordField pass;
    @FXML
    private Button add;
    @FXML
    private Button del;
    @FXML
    private TableColumn tc1;
    @FXML
    private TableColumn tc2;
    @FXML
    private TableColumn tc3;

    private ObservableList<ShowData>data;
    private Connection1 c;  
    private void handleButtonAction(ActionEvent event) {
        System.out.println("You clicked me!");
        label.setText("Hello World!");
    }

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        c= new Connection1();
    }    

    private void onClick(ActionEvent event) throws IOException {
        Stage stage=new Stage();
        Parent root = FXMLLoader.load(getClass().getResource("/Box/FXML.fxml"));
        Scene scene = new Scene(root);
        stage.setScene(scene);
        stage.show();
    }

    @FXML
    private void onAdd(ActionEvent event) {
    }

    @FXML
    private void onDelete(ActionEvent event) {
    }

    @FXML
    private void onOpen(ActionEvent event) {
        try {
            Connection conn=c.Connect();
            data=FXCollections.observableArrayList();
            ResultSet rs=conn.createStatement().executeQuery("SELECT * FROM logs");
            while (rs.next()) {                
                data.add(new ShowData(rs.getString(1), rs.getString(2), rs.getString(3)));
            }
        } catch (SQLException ex) {
            System.err.println("Error"+ex);
        }
       tc1.setCellValueFactory(new PropertyValueFactory("id"));
       tc2.setCellValueFactory(new PropertyValueFactory("username"));
       tc3.setCellValueFactory(new PropertyValueFactory("msg"));
      table.setItems(null);
      table.setItems(data);
    }
}

我没有收到任何错误。当我改为例如：

data.add(new ShowData(rs.getString(2), rs.getString(1), rs.getString(3)));

在第一列显示用户名，在其他两列中没有。我的代码出了什么问题？

这是ShowData类 -

package javafxapplication7;
public class ShowData {

    private final StringProperty id;
    private final StringProperty username;
    private final StringProperty msg;

    public ShowData(String id, String username, String msg) {
        this.id = new SimpleStringProperty(id);
        this.username = new SimpleStringProperty(username);
        this.msg = new SimpleStringProperty(msg);
    }

    public String getId() {
        return id.get();
    }

    public String getuname() {
        return username.get();
    }

    public String getpass() {
        return msg.get();
    }

    public void setId(String value) {
        id.setValue(value);
    }

    public void setUname(String value) {
        username.setValue(value);
    }

    public void setPass(String value) {
        msg.setValue(value);
    }

    public StringProperty idproper(){
        return id;
    }

    public StringProperty unameproper(){
        return username;
    }

    public StringProperty passproper(){
        return msg;
    }
}

将MySQL与JavaFX TableView一起使用

0 个答案: