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Comment remplir une TableView avec des données de base de données

J'ai essayé de charger un TableView avec des données interrogées à partir d'une base de données, mais je n'arrive pas à le faire fonctionner.

C’est la première fois que je tente d’essayer de remplir une base de données avec des éléments de requête de base de données, au cas où mon code me semblerait immodéré et loin d’être bon.

Le FXML a été réalisé via JavaFx SceneBuilder.

C'est la classe de requête de base de données:

import Java.sql.Connection;
import Java.sql.DriverManager;
import Java.sql.ResultSet;
import Java.sql.SQLException;
import Java.sql.Statement;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.scene.control.TableView;

public class StudentInfo {
    static String JDBC_DRIVER = "org.h2.Driver";
    static String DB_URL = "jdbc:h2:file:C:/WAKILI/WAKILIdb";
    //  Database credentials
    static final String USER = "sa";
    static final String PASS = "";

    public static Connection conn = null;
    @FXML
    private TableView<StudentInfo> lovelyStudents;

    private ObservableList data;

    // Public static ObservableList<COA> getAllCOA(){
    public void getAllstudentInfo() {
        Statement st = null;
        ResultSet rs;
        String driver = "org.h2.Driver";

        try {
            Class.forName(driver);
            conn = DriverManager.getConnection(DB_URL, USER, PASS);
            st = conn.createStatement();
            String recordQuery = ("SELECT id, KIWI FROM KIWI");

            rs = st.executeQuery(recordQuery);
            while (rs.next()) {
                ObservableList row = FXCollections.observableArrayList();

                for (int i = 1; i <= rs.getMetaData().getColumnCount(); i++) {
                    row.add(rs.getString(i));
                    System.out.println(row);
                }

                data.add(row);

            }
            lovelyStudents.setItems(data);

        } catch (ClassNotFoundException | SQLException ex) {
            // CATCH SOMETHING
        }
    }
}

Voici le script FXML généré via le générateur de scènes JavaFx:

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

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

<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="700.0" xmlns:fx="http://javafx.com/fxml" fx:controller="wakiliproject.SampleController">
  <children>
    <TableView prefHeight="400.0" prefWidth="700.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
      <columns>
        <TableColumn prefWidth="75.0" text="Column X" />
      </columns>
    </TableView>
  </children>
</AnchorPane>
javasqljavafxtableview
6
ORey

Voici la meilleure solution pour les données de remplissage à la tableView à partir de la base de données.

import Java.sql.Connection;
import Java.sql.ResultSet;
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableColumn.CellDataFeatures;
import javafx.scene.control.TableView;
import javafx.stage.Stage;
import javafx.util.Callback;

/**
 * 
 * @author Narayan
 */

public class DynamicTable extends Application{

    //TABLE VIEW AND DATA
    private ObservableList<ObservableList> data;
    private TableView tableview;

    //MAIN EXECUTOR
    public static void main(String[] args) {
        launch(args);
    }

    //CONNECTION DATABASE
    public void buildData(){
          Connection c ;
          data = FXCollections.observableArrayList();
          try{
            c = DBConnect.connect();
            //SQL FOR SELECTING ALL OF CUSTOMER
            String SQL = "SELECT * from CUSTOMer";
            //ResultSet
            ResultSet rs = c.createStatement().executeQuery(SQL);

            /**********************************
             * TABLE COLUMN ADDED DYNAMICALLY *
             **********************************/
            for(int i=0 ; i<rs.getMetaData().getColumnCount(); i++){
                //We are using non property style for making dynamic table
                final int j = i;                
                TableColumn col = new TableColumn(rs.getMetaData().getColumnName(i+1));
                col.setCellValueFactory(new Callback<CellDataFeatures<ObservableList,String>,ObservableValue<String>>(){                    
                    public ObservableValue<String> call(CellDataFeatures<ObservableList, String> param) {                                                                                              
                        return new SimpleStringProperty(param.getValue().get(j).toString());                        
                    }                    
                });

                tableview.getColumns().addAll(col); 
                System.out.println("Column ["+i+"] ");
            }

            /********************************
             * Data added to ObservableList *
             ********************************/
            while(rs.next()){
                //Iterate Row
                ObservableList<String> row = FXCollections.observableArrayList();
                for(int i=1 ; i<=rs.getMetaData().getColumnCount(); i++){
                    //Iterate Column
                    row.add(rs.getString(i));
                }
                System.out.println("Row [1] added "+row );
                data.add(row);

            }

            //FINALLY ADDED TO TableView
            tableview.setItems(data);
          }catch(Exception e){
              e.printStackTrace();
              System.out.println("Error on Building Data");             
          }
      }


      @Override
      public void start(Stage stage) throws Exception {
        //TableView
        tableview = new TableView();
        buildData();

        //Main Scene
        Scene scene = new Scene(tableview);        

        stage.setScene(scene);
        stage.show();
      }
}

Voici le Référence

Merci..

14
Java Man
public TableView queryToTable(String sql) {
    TableView result = new TableView();
    ObservableList data = FXCollections.observableArrayList();

    jdbcTemplate.query(sql, (rs)->{
        for(int i=0 ; i<rs.getMetaData().getColumnCount(); i++){
            final int j = i;
            TableColumn col = new TableColumn(rs.getMetaData().getColumnName(i+1));
            col.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<ObservableList,String>,ObservableValue<String>>(){
                public ObservableValue<String> call(TableColumn.CellDataFeatures<ObservableList, String> param) {
                    return new SimpleStringProperty(param.getValue().get(j).toString());
                }
            });
            result.getColumns().addAll(col);
        }

        while(rs.next()){
            ObservableList<String> row = FXCollections.observableArrayList();
            for(int i=1 ; i<=rs.getMetaData().getColumnCount(); i++)
                row.add(rs.getString(i));
            data.add(row);
        }
        return null;
    });
    return result;
}
0
Alisher Gulov

Si Database contient différents types de données, pas uniquement String, l'attribution de type de colonne est préférable pour rendre dynamique:

package sample;

import javafx.application.Application;
import javafx.beans.property.*;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.stage.Stage;
import Java.sql.*;
import Java.util.ArrayList;
import Java.util.TimeZone;

//Author: Yerbol
//SQL database "sqlbase_schema" contains a Table "sqlbase_table" with 3 columns: "id" (Integer(INT(11))), "name" (String(VARCHAR(45))), "married" (Boolean(TINYINT(1)));

public class Main extends Application {
    private TableView<Person> tableView = new TableView<>();

    @Override
    public void start(Stage primaryStage) throws SQLException, ClassNotFoundException {
        //Show window
        buildData();
        Parent root = tableView;
        primaryStage.setScene(new Scene(root, 300, 275));
        primaryStage.show();
    }

    public void buildData() throws ClassNotFoundException, SQLException {

        Connection dbConnection;
        //SQL Database connection params
        String dbHost = "localhost";
        String dbPort = "3306";
        String dbUser = "root";
        String dbPassword = "12345";
        String dbName = "sqlbase_schema";
        String dbTableName = "sqlbase_table";
        String select = "SELECT * FROM " + dbTableName;
        String connectionString = "jdbc:mysql://" + dbHost + ":" + dbPort +"/" + dbName+"?useLegacyDatetimeCode=false&amp&serverTimezone=" + TimeZone.getDefault().getID();
        Class.forName("com.mysql.cj.jdbc.Driver");

        //Connecting to Database
        dbConnection = DriverManager.getConnection(connectionString, dbUser, dbPassword);

        //Extracting data from Databasee
        ResultSet resultSet = null;
        try {
            PreparedStatement preparedStatement = dbConnection.prepareStatement(select);
            resultSet = preparedStatement.executeQuery();

        } catch (SQLException e) {
            e.printStackTrace();
        }

        ObservableList dbData = FXCollections.observableArrayList(dataBaseArrayList(resultSet));

        //Giving readable names to columns
        for(int i=0 ; i<resultSet.getMetaData().getColumnCount(); i++) {
            TableColumn column = new TableColumn<>();
            switch (resultSet.getMetaData().getColumnName(i+1)) {
                case "id":
                    column.setText("ID #");
                    break;
                case "name":
                    column.setText("Person Name");
                    break;
                case "married":
                    column.setText("Marital Status");
                    break;
                default: column.setText(resultSet.getMetaData().getColumnName(i+1)); //if column name in SQL Database is not found, then TableView column receive SQL Database current column name (not readable)
                    break;
            }
            column.setCellValueFactory(new PropertyValueFactory<>(resultSet.getMetaData().getColumnName(i+1))); //Setting cell property value to correct variable from Person class.
            tableView.getColumns().add(column);
        }

        //Filling up tableView with data
        tableView.setItems(dbData);
    }

    public class Person {

        IntegerProperty id = new SimpleIntegerProperty(); //variable names should be exactly as column names in SQL Database Table. In case if you want to use <int> type instead of <IntegerProperty>, then you need to use getter/setter procedures instead of xxxProperty() below
        StringProperty name = new SimpleStringProperty();
        BooleanProperty married = new SimpleBooleanProperty();

        public IntegerProperty idProperty() { //name should be exactly like this [IntegerProperty variable name (id) + (Property) = idProperty] (case sensitive)
            return id;
        }

        public StringProperty nameProperty() {
            return name;
        }

        public BooleanProperty marriedProperty() {
            return married;
        }

        public Person(int idValue, String nameValue, boolean marriedValue) {
            id.set(idValue);
            name.set(nameValue);
            married.set(marriedValue);
        }

        Person(){}
    }

    //extracting data from ResulSet to ArrayList
    private ArrayList dataBaseArrayList(ResultSet resultSet) throws SQLException {
        ArrayList<Person> data =  new ArrayList<>();
        while (resultSet.next()) {
            Person person = new Person();
            person.id.set(resultSet.getInt("id"));
            person.name.set(resultSet.getString("name"));
            person.married.set(resultSet.getBoolean("married"));
            data.add(person);
        }
        return data;
    }

    public static void main(String[] args) {
        launch(args);
    }
}

Dans cet exemple, la base de données SQL "sqlbase_schema" contient une table "sqlbase_table" à 3 colonnes: "id" (Integer (INT (11))), "name" (String (VARCHAR (45))), "married (Boolean (TINYINT) (1)));

0
Yerbol