Java GUI使用一个Jtextfield进行文本和数字输入

我有一个DAO类，其中包含一些方法，例如通过ID和数据库中的名称获取员工 . 方法正常 .

现在我决定使用IntelliJ IDEA的GUI Designer创建一个简单的表单 . 我希望能够在同一个JtextField中输入ID（int值）或名称（String值），并在单击“Submit”按钮后显示结果 . 是否可以或者我应该为每种类型的输入创建额外的JTextField和JButton对？

现在我可以使actionPerformed方法只对方法searchEmployees（按名称）和getAllEmployees正常工作（如果用户单击带有空JTextField的JButton，它只会生成“SELECT * FROM employees”） . 我是构建GUI应用程序的新手，因此欢迎所有改进代码的建议 .

这是我的代码

public class EmployeeApp extends JFrame {
private JPanel panelMain;
private JButton searchButton;
private JScrollPane scrollPane;
private JTextField idTextField;
private JLabel lastNameLabel;

private EmployeesDao employeesDao;


public EmployeeApp() {

    // create the DAO
    try {
        employeesDao = new EmployeesDao();
    } catch (Exception exc) {
        JOptionPane.showMessageDialog(this, "Error: " + exc, "Error", JOptionPane.ERROR_MESSAGE);
    }

    searchButton.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {

            try {
                String searchValue = idTextField.getText();

                List<Employee> employees;

                if (searchValue != null && searchValue.trim().length() > 0) {
                    employees = employeesDao.searchEmployees(searchValue);
                } else {
                    employees = employeesDao.getAllEmployees();
                }
                for (Employee temp : employees) {
                    System.out.println(temp);
                }

            } catch (Exception exc) {
                JOptionPane.showMessageDialog(EmployeeApp.this, "Error: " + exc, "Error", JOptionPane.ERROR_MESSAGE);

            }

        }
    });
}

public static void main(String[] args) {
    JFrame frame = new JFrame("EmployeeApp");
    frame.setContentPane(new EmployeeApp().panelMain);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);
}}

Edit: 我试图修改try / catch块，现在当我在JTextField中输入一个数字时，getEmployeeById方法正常工作 . 但是当输入一个字符串时，我得到一个NumberFormatException .

searchButton.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            String searchValue = idTextField.getText();
            List<Employee> employees;
            Employee employee;

            try {
                int numValue = Integer.parseInt(searchValue);
                employee = employeesDao.getEmployeeById(numValue);
                System.out.println(employee);

                if (searchValue != null && searchValue.trim().length() > 0) {
                    employees = employeesDao.searchEmployees(searchValue);
                }

                else {
                    employees = employeesDao.getAllEmployees();
                }
                for (Employee temp : employees) {
                    System.out.println(temp);
                }

            } catch (Exception exc) {
                JOptionPane.showMessageDialog(EmployeeApp.this, "Error: " + exc, "Error", JOptionPane.ERROR_MESSAGE);

            }

        }
    });