Jtable中的删除按钮 [英] Delete button in a Jtable

问题描述

我在Jtable的每一行中添加了一个按钮，但是没有任何动作.按钮删除"必须从我的Jtable以及我的数据库中删除该行.我想到要使用map，该map包含数据库中的行号和id，但是我是栈，因此无法继续执行该逻辑.

I added a button in each row of my Jtable, but without action. The button "delete" must delete the row from my Jtable and also my database. I thought of using map, the map contains the row number and id in my database, but i'm stack, i couldn't continue with that logic.

这是我的代码:

public class Fenetre extends JFrame {

    Statement stmt;
    Map<Integer,Integer> row_table  = new HashMap<Integer,Integer>();
public Fenetre(){     
    this.setLocationRelativeTo(null);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    this.setTitle("JTable");
    this.setSize(600, 140);

    String requeteListeUser=" SELECT * FROM COMPTE_UTILISATEUR";
    try{
    stmt= (Statement) new Connexion().getConnection().createStatement();
    ResultSet resultat= stmt.executeQuery(requeteListeUser);
     resultat.last(); 
     String  title[] = {"Nom","Prenom","Matricule","Action"};
     int rowCount = resultat.getRow();

     Object[][] data  = new Object[rowCount][4];

     JTable tableau = new JTable(data,title);

    // this.tableau = new JTable(model);
    tableau.getColumn("Action").setCellRenderer(new ButtonRenderer());

     this.getContentPane().add(new JScrollPane(tableau), BorderLayout.CENTER); 

     int i=0;
        resultat.beforeFirst(); // on repositionne le curseur avant la première ligne 
        while(resultat.next()) //tant qu'on a quelque chose à lire
        {   
            //Remplire le tableau à deux dimensions Data[][] 
            for(int j=1;j<=4;j++)
            {
                 if(j != 4)data[i][j-1]=resultat.getObject(j)+"";
                 else data[i][j-1] = new JButton("Supprimer");

            }

            i++; 
            row_table.put(i, resultat.getInt("id_utilisateur"));

        }    
    }
    catch(SQLException ex){
    System.out.println(ex);
    }   
  }

  //Classe model customized
  class ZModel extends AbstractTableModel{
    private Object[][] data;
    private String[] title;

    //Constructor
    public ZModel(Object[][] data, String[] title){
      this.data = data;
      this.title = title;
    }

    //Number of columns
    public int getColumnCount() {
      return this.title.length;
    }

    //Number of rows
    public int getRowCount() {
      return this.data.length;
    }

    //The value at the specified  à l'emplacement spécifié
    public Object getValueAt(int row, int col) {
      return this.data[row][col];
    }   
  }

 public class ButtonRenderer extends JButton implements TableCellRenderer{

 public Component getTableCellRendererComponent(JTable table,Objectvalue,booleanisSelected, boolean isFocus, int row, int col) {
      //On écrit dans le bouton ce que contient la cellule
      setText("Suuprimer");
      //On retourne notre bouton
      return this;
     } }
  public static void main(String[] args){
    Fenetre fen = new Fenetre();
    fen.setVisible(true);
  }
}

推荐答案

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Check out Table Button Column. It shows how to use a JButton as a renderer and editor for a column. All you need to do is write the custom Action for the editor.

该链接给出了 Delete Action 的简单示例，该操作删除了TableModel中的一行.您需要修改Action才能从数据库中删除该行.

The link gives a simple example of a Delete Action that deletes a row from the TableModel. You would need to modify the Action to remove the row from the Database.

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