从jtable中使用netbeans从mysql中检索数据

Question

我想从数据库检索到jTable的数据。我使用NetBeans 8.1。我无法让它工作。

我用这个代码中插入：

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { 
    String name = jTextField1.getText(); 
    String father = jTextField2.getText(); 
    String mother = jTextField3.getText(); 
    String line1 = jTextField4.getText(); 
    String line2 = jTextField5.getText(); 
    String line3 = jTextField11.getText(); 
    String roll = jTextField6.getText(); 
    String school = jTextField7.getText(); 
    String hobby1 = jTextField8.getText(); 
    String hobby2=jTextField9.getText(); 
    String hobby3 = jTextField10.getText(); 
    String address = line1 + " " + line2 + " " + line3; 
    //String hobby = hobby1 + " " + hobby2 + " " + hobby3; 
    java.text.SimpleDateFormat fmt = new java.text.SimpleDateFormat("dd-MM-yyyy"); 
    String date = fmt.format(jDateChooser1.getDate()); 
    try{ 
     Class.forName("com.mysql.jdbc.Driver"); 
     Connection con = DriverManager.getConnection(
        "jdbc:mysql://127.0.0.1:3306/pritam", "root", "root"); 
     PreparedStatement ps = con.prepareStatement(
        "insert into basic_info values(?,?,?,?,?,?,?)"); 
     ps.setString(1, name); 
     ps.setString(2, father); 
     ps.setString(3, mother); 
     ps.setString(4, roll); 
     ps.setString(5, date); 
     ps.setString(6 ,address); 
     // ps.setString(7, hobby); 
     ps.setString(7, school); 
     ps.executeUpdate(); 
     con.close(); 
    }catch(Exception E) { 
     System.out.println(E); 
    } 

我如何在JTable中检索数据？

Answer 1

你需要实现一个AbstractTableModel上为：（这里只给在这里的例子）

NameTableModel.java

public class NameTableModel extends AbstractTableModel { 

    String[] columnNames = {"Id", "Name","Father", "Mother","Hobby" }; 
    Object[][] data; 

    public int getColumnCount() { 
     return columnNames.length; 
    } 

    public int getRowCount() { 
     return data.length; 
    } 

    public String getColumnName(int col) { 
     return columnNames[col]; 
    } 

    public Object getValueAt(int row, int col) { 
     return data[row][col]; 
    } 

    public void setValueAt(Object value, int row, int col) { 
      data[row][col] = value; 
      fireTableCellUpdated(row, col); 
    }   
} 

NameStoreUI.java

public class NameStoreUI extends javax.swing.JPanel { 

    public NameStoreUI() { 
     initComponents(); 
     loadData(); 
    } 
    void loadData() 
    { 

     NameTableModel model = new NameTableModel(); 
     NameDAO m = new NameDAO(); 
     Object[][] data_x = m.list(); 
     model.data = data_x; 
     tableData.setModel(model); 
    } 

NameDAO.java

public Object[][] list() 
    { 
     try 
     { 
      s = con.createStatement(); 
      rs = s.executeQuery("SELECT * FROM name_table"); 

      ArrayList mylist = new ArrayList(); 

      int column_count = rs.getMetaData().getColumnCount(); 

      while (rs.next()) 
      { 
       String[] s = {rs.getString("id"),rs.getString("name"),rs.getString("father"),rs.getString("mother"),rs.getString("hobby")}; 
       mylist.add(s); 
      } 

      Object[][] o = new Object[mylist.size()][column_count]; 

      int i, j; 
      for(i = 0 ; i < mylist.size() ; i++) 
      { 
       o[i] = (String[])mylist.get(i); 
      } 

      return o; 

     } 
     catch(SQLException s) 
     { 
      System.out.println("Error in list()"); 
     } 
     return null; 
    } 

我希望你明白了。