employeeswingview.java

对XML和DB的CURD的基本操作.使用的两个比较常用的组合设计模式：MVC模式+DAO模式。

package com.mycompany.myapp.view.swing;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.List;
import java.util.Vector;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

import com.mycompany.myapp.control.ControllerInterface;
import com.mycompany.myapp.model.Employee;
import com.mycompany.myapp.service.EmployeeManager;

public class EmployeeSwingView implements ActionListener {
	private ControllerInterface<Employee, Long> controller;
	private JTable table = null;
	private DefaultTableModel defaultModel = null;

	public EmployeeSwingView(
			ControllerInterface<Employee, Long> employeeController,
			EmployeeManager manager) {
		this.controller = employeeController;
		//manager.registerObserver((EmployeeObserver) this);
	}

	/**
	 * Create all Swing components
	 */
	public void createView() {
		JFrame f = new JFrame();
		String[] columnName = { "id", "first name", "last name",
				"phone number", "address" };
		List<Employee> employeeList = controller.getAll();
		Object[][] data = new Object[employeeList.size()][columnName.length];
		for (int i = 0; i < employeeList.size(); i++) {
			Employee employee = (Employee) employeeList.get(i);
			data[i] = new String[] { String.valueOf(employee.getId()),
					employee.getFirstName(), employee.getLastName(),
					employee.getPhoneNumber(), employee.getAddress() };
		}
		defaultModel = new DefaultTableModel(data, columnName);
		table = new JTable(defaultModel);
		table.setPreferredScrollableViewportSize(new Dimension(450, 100));
		JScrollPane s = new JScrollPane(table);
		JPanel panel = new JPanel();
		JButton b = new JButton("Add");
		panel.add(b);
		b.addActionListener(this);
		b = new JButton("Save");
		panel.add(b);
		b.addActionListener(this);
		b = new JButton("Remove");
		panel.add(b);
		b.addActionListener(this);
		Container contentPane = f.getContentPane();
		contentPane.add(panel, BorderLayout.NORTH);
		contentPane.add(s, BorderLayout.CENTER);
		f.setTitle("EmployeeCRUD");
		f.pack();
		f.setVisible(true);
		f.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
			}
		});
	}

	public void actionPerformed(ActionEvent e) {
		int selectedRowIndex = table.getSelectedRow();
		if (e.getActionCommand().equals("Add")) {
			List<Employee> employeeList = controller.getAll();
			Vector newRowVector = new Vector();
			String newElm;
			if(!employeeList.isEmpty()){
				Employee lastEmployee = (Employee) employeeList.get(employeeList
						.size() - 1);
				newElm = String.valueOf(lastEmployee.getId() + 1);
			}
			else{
				newElm = "0";
			}
			newRowVector.addElement(newElm);
			defaultModel.addRow(newRowVector);
		} else if (e.getActionCommand().equals("Remove")) {
			String id = (String) defaultModel.getValueAt(selectedRowIndex, 0);
			controller.remove(Long.valueOf(id));
			defaultModel.removeRow(selectedRowIndex);
		} else if (e.getActionCommand().equals("Save")) {
			String id = (String) defaultModel.getValueAt(selectedRowIndex, 0);
			String firstName = (String) defaultModel.getValueAt(
					selectedRowIndex, 1);
			String lastName = (String) defaultModel.getValueAt(
					selectedRowIndex, 2);
			String phoneNumber = (String) defaultModel.getValueAt(
					selectedRowIndex, 3);
			String address = (String) defaultModel.getValueAt(selectedRowIndex,
					4);
			Employee employee = null;
			employee = controller.get(Long.valueOf(id));
			if (employee != null) {
				employee.setFirstName(firstName);
				employee.setLastName(lastName);
				employee.setPhoneNumber(phoneNumber);
				employee.setAddress(address);
				controller.update(employee);
			} else {
				employee = new Employee();
				employee.setFirstName(firstName);
				employee.setLastName(lastName);
				employee.setPhoneNumber(phoneNumber);
				employee.setAddress(address);
				controller.insert(employee);
			}
		}
	}
}