我是Java和sqlite数据库的新手。我正在尝试使用eclipse中的java将数据从数据库加载到表格视图中的一些代码。现在，这就是当我从数据库加载数据时，我想添加一个包含复选框（未选中）的额外列。有人可以建议我如何实现它？请注意，当我运行代码时，它工作得非常好并且没有显示错误....我能够看到表中的所有记录而没有任何错误。只是想要一个未选中的复选框添加到每一行，以便当我点击它时，我可以做一些事情。多数民众赞成我的目标..
这是我到目前为止所尝试的内容..我有两个课程： - 1. sqliteConnection.java（用于连接） 2. employeeinfo.java类，用于将数据库中的数据加载到表和其他功能中。
import java.sql.*;
import javax.swing.*;
public class sqliteConnection {
Connection conn = null;
public static Connection dbConnector()
{
try{
Class.forName("org.sqlite.JDBC");
Connection conn = DriverManager.getConnection("jdbc:sqlite:C:\\Users\\user\\Downloads\\Documents\\MyJavaProjects\\Phone\\Employee.sqlite");
JOptionPane.showMessageDialog(null, "Connection Succesful");
return conn;
}
catch(Exception e)
{
JOptionPane.showMessageDialog(null, e);
return null;
}
}
public sqliteConnection() {
// TODO Auto-generated constructor stub
}
}
employeeinfo.java -
import java.awt.BorderLayout;
public class employeeinfo extends JFrame {
private JPanel contentPane;
private JTable table;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
employeeinfo frame = new employeeinfo();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
Connection connection = null;
private JTextField textField;
private JTextField textField_1;
private JTextField textField_2;
private JTextField textField_3;
public employeeinfo() {
connection = sqliteConnection.dbConnector();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 842, 457);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel lblJframe = new JLabel("Jframe2");
lblJframe.setBounds(47, 37, 46, 14);
contentPane.add(lblJframe);
JButton btnLoad = new JButton("Load");
btnLoad.addActionListener(new ActionListener() {
PreparedStatement pat;
public void actionPerformed(ActionEvent arg0) {
try {
String query = "select eid,Name,Surname,Age from EmployeeInfo ";
pat = connection.prepareStatement(query);
ResultSet rs = pat.executeQuery();
table.setModel(DbUtils.resultSetToTableModel(rs));
}
catch (Exception e)
{
}
}
});
btnLoad.setBounds(104, 33, 89, 23);
contentPane.add(btnLoad);
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(429, 48, 370, 232);
contentPane.add(scrollPane);
table = new JTable();
scrollPane.setViewportView(table);
JLabel lblName = new JLabel("EID");
lblName.setBounds(10, 98, 46, 21);
contentPane.add(lblName);
textField = new JTextField();
textField.setBounds(107, 99, 126, 20);
contentPane.add(textField);
textField.setColumns(10);
JLabel lblName_1 = new JLabel("Name");
lblName_1.setBounds(10, 154, 46, 14);
contentPane.add(lblName_1);
textField_1 = new JTextField();
textField_1.setColumns(10);
textField_1.setBounds(107, 151, 126, 20);
contentPane.add(textField_1);
JLabel lblSurname = new JLabel("Surname");
lblSurname.setBounds(10, 204, 46, 14);
contentPane.add(lblSurname);
textField_2 = new JTextField();
textField_2.setColumns(10);
textField_2.setBounds(104, 201, 126, 20);
contentPane.add(textField_2);
JLabel lblAge = new JLabel("Age");
lblAge.setBounds(10, 278, 46, 14);
contentPane.add(lblAge);
textField_3 = new JTextField();
textField_3.setColumns(10);
textField_3.setBounds(104, 275, 126, 20);
contentPane.add(textField_3);
JButton btnSave = new JButton("Save");
btnSave.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
PreparedStatement pat;
try {
String query = "insert into EmployeeInfo(EID,name,surname,age) values(?,?,?,?)";
pat = connection.prepareStatement(query);
pat.setString(1, textField.getText());
pat.setString(2, textField_1.getText());
pat.setString(3, textField_2.getText());
pat.setString(4, textField_3.getText());
pat.execute();
JOptionPane.showMessageDialog(null, "Data Saved successfully");
pat.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
});
btnSave.setBounds(72, 349, 89, 23);
contentPane.add(btnSave);
JButton btnClear = new JButton("Clear");
btnClear.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText("");
textField_1.setText("");
textField_2.setText("");
textField_3.setText("");
}
});
btnClear.setBounds(206, 349, 89, 23);
contentPane.add(btnClear);
JButton btnUpdate = new JButton("Update");
btnUpdate.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try
{
String query="Update EmployeeInfo set EID='"+textField.getText()+"',Name='"+textField_1.getText()+"'"
+",Surname='"+textField_2.getText()+"',Age='"+textField_3.getText()+"'where EID='"+textField.getText()+"'";
// JOptionPane.showMessageDialog(null, query);
PreparedStatement pst=connection.prepareStatement(query);
pst.execute();
JOptionPane.showMessageDialog(null, "Data Saved successfully");
pst.close();
}
catch(Exception f)
{
f.printStackTrace();
}
}
});
btnUpdate.setBounds(323, 349, 89, 23);
contentPane.add(btnUpdate);
JButton btnDelete = new JButton("Delete");
btnDelete.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try
{
String query="delete from EmployeeInfo where EID='"+textField.getText()+"'";
// JOptionPane.showMessageDialog(null, query);
PreparedStatement pst=connection.prepareStatement(query);
pst.execute();
JOptionPane.showMessageDialog(null, "Data deleted successfully");
pst.close();
}
catch(Exception ex)
{
ex.printStackTrace();
}
}
});
btnDelete.setBounds(453, 349, 89, 23);
contentPane.add(btnDelete);
}
}
答案 0 :(得分：0)
我建议您首先浏览this article，这是一种将数据从ResultSet加载到DefaultTableModel的简单方法。在此之后，您必须进行一些小的更改，例如，您必须向ColumnNames的Vector添加另一个列标题，并为复选框添加一列。然后，当您从ResultSet处理每一行时，您需要使用复选框向行Vector添加一个布尔值。