从SQLite中的数据填充JavaFX中的TableView

我试图从SQLite数据库中的数据填充TableView，但我遇到了一个非常奇怪的场景，我无法理解是什么导致了它

tableview只填充两列，不填充其余列。最终显示TableView时，不会填充带有“NO”和“Date Created”的Tablecolumns

但是，此代码在“Title”和“Description”TableView列中显示来自SQLite数据库的数据

请有鹰眼的人帮我找出我在这个代码上的错误。我花了一天的大部分时间试图找出我哪里做错了，但我似乎没有弄清楚我做得不对是什么。我将非常感谢在这方面的任何帮助

这是我的密码

主类

大宗报价

大宗报价

FXML

大宗报价

大宗报价

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您的财产命名有错误。 getDateCreated和IdNO的函数与 命名约定

替换

public  SimpleStringProperty datecreated = new SimpleStringProperty();
public  SimpleStringProperty idno = new SimpleStringProperty();

与

---

看一下命名

非常感谢@Inge指出我的命名约定是问题的原因。我还更改了以下内容：；dateCreatedCol.setCellValueFactory（//new PropertyValueFactory（“datecreated”）//错误的new PropertyValueFactory（“datecreated”）//正确；还有这一点；noCol.setCellValueFactory（//new PropertyValueFactory（“idno”）//错误的new PropertyValueFactory（“idno”）//正确；现在它工作得很好。非常感谢。

<?xml version="1.0" encoding="UTF-8"?>

<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>

<SplitPane dividerPositions="0.5" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" orientation="VERTICAL" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="notedb.test.ListNotesUIController">
        <items>
            <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="100.0" prefWidth="160.0">
                <children>
                    <SplitPane dividerPositions="0.5" layoutX="186.0" layoutY="-2.0" orientation="VERTICAL" prefHeight="196.0" prefWidth="598.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
                        <items>
                            <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="100.0" prefWidth="160.0">
                                <children>
                                    <Button alignment="TOP_CENTER" contentDisplay="TEXT_ONLY" layoutX="484.0" layoutY="22.0" mnemonicParsing="false" onAction="#newNote" prefHeight="54.0" prefWidth="66.0" text="New Note" textAlignment="CENTER" wrapText="true" />
                                </children>
                            </AnchorPane>
                            <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="100.0" prefWidth="160.0">
                                <children>
                                    <GridPane layoutX="126.0" layoutY="2.0" prefHeight="94.0" prefWidth="596.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
                                        <columnConstraints>
                                            <ColumnConstraints hgrow="SOMETIMES" maxWidth="441.0" minWidth="10.0" prefWidth="441.0" />
                                            <ColumnConstraints hgrow="SOMETIMES" maxWidth="292.0" minWidth="10.0" prefWidth="155.0" />
                                        </columnConstraints>
                                        <rowConstraints>
                                            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
                                        </rowConstraints>
                                        <children>
                                            <TextField fx:id="m_search" onAction="#searchNotes" />
                                            <Label fx:id="labelNOs" alignment="CENTER" prefHeight="17.0" prefWidth="94.0" text="4 Notes" GridPane.columnIndex="1" />
                                        </children>
                                    </GridPane>
                                </children>
                            </AnchorPane>
                        </items>
                    </SplitPane>
                </children>
            </AnchorPane>
            <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="100.0" prefWidth="160.0">
                <children>
                    <GridPane layoutX="181.0" layoutY="98.0" prefHeight="196.0" prefWidth="598.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
                        <columnConstraints>
                            <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
                        </columnConstraints>
                        <rowConstraints>
                            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
                            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
                        </rowConstraints>
                        <children>
                            <Pane prefHeight="200.0" prefWidth="200.0" GridPane.rowIndex="1">
                                <children>
                                    <Button layoutX="95.0" layoutY="24.0" mnemonicParsing="false" prefHeight="54.0" prefWidth="100.0" text="Delete" />
                                    <Button fx:id="btn_medit" layoutX="389.0" layoutY="24.0" mnemonicParsing="false" onAction="#editNoteRow" prefHeight="54.0" prefWidth="94.0" text="Edit" />
                                </children>
                            </Pane>
                            <TableView id="tableNotes" fx:id="tableNotes" editable="true" prefHeight="200.0" prefWidth="200.0">
                                <columns>
                                    <TableColumn id="noCol" fx:id="noCol" text="NO">
                                    </TableColumn>
                                    <TableColumn id="titleCol" fx:id="titleCol" text="Title">
                                    </TableColumn>
                                    <TableColumn id="dateCreatedCol" fx:id="dateCreatedCol" text="Date Created">
                                    </TableColumn>                                    
                                    <TableColumn id="descriptionCol" fx:id="descriptionCol" text="Description">
                                    </TableColumn>
                                </columns>
                            </TableView>
                        </children>
                    </GridPane>
                </children>
            </AnchorPane>
        </items>
    </SplitPane>

public class ListNotesUIController implements Initializable {


    @FXML
    private Label label;

    @FXML
    private Label labelNOs;

    @FXML
    private Button newNote;

    @FXML
    private Button btn_medit;    

    @FXML
    private TextField m_search;

    @FXML
    private TableView tableNotes;

    @FXML
    private TableColumn titleCol;

    @FXML
    private TableColumn descriptionCol;

    @FXML
    private TableColumn dateCreatedCol;

    @FXML
    private TableColumn noCol;

    //START | SQLITE
    private static Connection con;
    private static Statement stat;
    private PreparedStatement prep;
    //END | SQLITE

    private ObservableList <Note> dataNotes; 

    DataBank dbank = new DataBank();    

    @FXML
    private void handleButtonAction(ActionEvent event) {
        System.out.println("You clicked me!");
        label.setText("Hello World!");
    }

    @FXML
    private void editNoteRow(ActionEvent event) {

    }

    @FXML
    private void newNote(ActionEvent event) throws IOException {

    }


    @FXML
    private void searchNotes(ActionEvent event){

    }

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        dataNotes = FXCollections.observableArrayList();

        noCol.setCellValueFactory(
                new PropertyValueFactory<Note, String>("idno")
        );
        dateCreatedCol.setCellValueFactory(
                new PropertyValueFactory<Note, String>("datecreated")
        );
        titleCol.setCellValueFactory(
                new PropertyValueFactory<Note, String>("title")
        );
        descriptionCol.setCellValueFactory(
                new PropertyValueFactory<Note, String>("description")
        );


        try {            
            SQLiteConfig config = new SQLiteConfig();
            con = DriverManager.getConnection("jdbc:sqlite:Note.db");
            stat = con.createStatement();
            stat.executeUpdate("CREATE TABLE IF NOT EXISTS NotesDB (idno INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, Title VARCHAR(500), Description VARCHAR(1000), DateCreated DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL);");

            ResultSet rs = con.createStatement().executeQuery("SELECT idno, Title, DateCreated, Description FROM NotesDB");
            while (rs.next()) {
                Note nt = new Note();
                nt.idno.set(rs.getString("idno"));
                nt.title.set(rs.getString("Title"));
                nt.datecreated.set(rs.getString("DateCreated"));
                nt.description.set(rs.getString("Description"));
                dataNotes.add(nt);                
            }            
            tableNotes.setItems(dataNotes);

        } catch (SQLException ex) {
            Logger.getLogger(ListNotesUIController.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

}

public class Note {

    public  SimpleStringProperty title = new SimpleStringProperty();
    public  SimpleStringProperty description = new SimpleStringProperty();
    public  SimpleStringProperty datecreated = new SimpleStringProperty();
    public  SimpleStringProperty idno = new SimpleStringProperty();

    public String getTitle() {
        return title.get();
    }

    public void setTitle(String titleStr) {
        title.set(titleStr);
    }

    public String getDescription() {
        return description.get();
    }

    public void setDescription(String descriptionStr) {
        description.set(descriptionStr);
    }

    public String getDateCreated() {
        return datecreated.get();
    }

    public void setDateCreated(String datecreatedStr) {
        datecreated.set(datecreatedStr);
    }

    public String getIdNO() {
        return idno.get();
    }

    public void setIdNO(String idnoStr) {
        idno.set(idnoStr);
    }
}

public  SimpleStringProperty datecreated = new SimpleStringProperty();
public  SimpleStringProperty idno = new SimpleStringProperty();

public  SimpleStringProperty dateCreated = new SimpleStringProperty();
public  SimpleStringProperty idNO = new SimpleStringProperty();