Question

以某种方式调试数据被完全检索，并且resultModel实际上有列名和行数据。虽然在搜索后编译并在Netbeans中运行时，表格消失，甚至没有数据显示列名。这是代码：

private void search(){
    String[][] rowData = new String[0][4];
    String[] columns = {"appointmentid", "fname", "lname", "registration", "make", "model", "engine", "year", "mileage", "type", "date", "time"};
    resultModel = new DefaultTableModel(rowData,columns);
     add(new JScrollPane(jTable1));

    jTable1 = new JTable(resultModel);

    jTable1.setAutoCreateRowSorter(true); 

     try{
        Model_Customer[] appointment = Controller_ManageCustomer.FindCustomers(Searchtxt.getText());
        resultModel.setRowCount(0);
        for(int i = 0; i < appointment.length; i++)
            resultModel.insertRow(i,new Object[]{appointment[i].GetID(),appointment[i].GetFName(), appointment[i].GetLName(), appointment[i].GetRegistration(), appointment[i].GetMake(), appointment[i].GetModel(), appointment[i].GetEngine(), appointment[i].GetYear(), appointment[i].GetMileage(), appointment[i].GetType(), appointment[i].GetDate(), appointment[i].GetTime()});

    }catch(Exception ex){
        JOptionPane.showMessageDialog(this,ex.getMessage(),"Error",JOptionPane.ERROR_MESSAGE);
    }

}
  DefaultTableModel resultModel

Answer 1

可能只是我......但这看起来很可疑......

add(new JScrollPane(jTable1));
jTable1 = new JTable(resultModel);

更不用说，你去构建一个漂亮的新DefaultTableModel，但实际上并没有将它应用于屏幕上的任何实际内容......

尝试更像......

resultModel = new DefaultTableModel(rowData,columns);

 try{
    Model_Customer[] appointment = Controller_ManageCustomer.FindCustomers(Searchtxt.getText());
    resultModel.setRowCount(0);
    for(int i = 0; i < appointment.length; i++) {
        resultModel.insertRow(i,new Object[]{appointment[i].GetID(),appointment[i].GetFName(), appointment[i].GetLName(), appointment[i].GetRegistration(), appointment[i].GetMake(), appointment[i].GetModel(), appointment[i].GetEngine(), appointment[i].GetYear(), appointment[i].GetMileage(), appointment[i].GetType(), appointment[i].GetDate(), appointment[i].GetTime()});
    }

    if (jTable1 == null) {
        jTable1 = new JTable(resultModel);
        add(new JScrollPane(jTable1));
    } else {
        jTable1.setModel(resultModel);
    }

}catch(Exception ex){
    JOptionPane.showMessageDialog(this,ex.getMessage(),"Error",JOptionPane.ERROR_MESSAGE);
}

现在，就个人而言，我只需创建JTable并将其添加到屏幕上，不管它，只需更改TableModel，只要您想要更新它的内容...... < / p>

Swing使用MVC范例的形式，这意味着它将视图与模型分开，这意味着当您想要更改JTable所显示的内容（视图）时，您只需更改模特......

从数据库（通过Netbeans）向jTable添加数据没有错误，但表格消失

1 个答案: