loginframe.java

好的超市源码供大家下载

package view.frame;

import java.awt.Color;
import java.awt.Font;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

import view.com.CenterDialog;
import view.com.GBC;
import view.com.factory.MainFrameFactory;
import view.com.factory.PosFrameFactory;
import view.com.getcomponent.button.GetButton;

import dao.UserPwdDao;

/**
 * @version 2008年04月 超市管理系统
 * @author linfeng,tanwenjie
 */
public class LoginFrame extends JDialog implements ActionListener {

  /**
   * dialog 对话框 gbl GridBagLayout布局器 user 用户名称s pwd 用户密码 user_type 用户类型 welcome
   * 一个提示welcome标签 hint 一个提示用户信息标签 user_typeBox 下拉列表 user_tf 用户文本框 pwd_tf 密码文本框
   * 
   */
  public static JDialog dialog;
  private GridBagLayout gbl;
  private JLabel user, pwd, user_type, welcome, hint;
  private JComboBox user_typeBox;
  public static JTextField user_tf;
  private JPasswordField pwd_tf;
  private JButton ok, cancel;
  private UserPwdDao upd = new UserPwdDao();

  public LoginFrame() {
    // 获得规格的对话框
    dialog = new CenterDialog().getCenterDialog(dialog, 3, true);
    // 设对话框标题
    dialog.setTitle("用户登录");
    // 设置布局
    gbl = new GridBagLayout();
    dialog.setLayout(gbl);

    // 构造两个按钮，并添加相应事件
    ok = new GetButton().getButton("登录", "icon/登录.gif", "登录");
    ok.addActionListener(this);
    cancel = new GetButton().getButton("退出", "icon/退出.gif", "退出");
    cancel.addActionListener(this);

    // 初始化各种组件
    user = new JLabel("用户名称");
    user.setFont(new Font("Serif", Font.BOLD, 12));
    user.setForeground(Color.WHITE);
    pwd = new JLabel("用户密码");
    pwd.setFont(new Font("Serif", Font.BOLD, 12));
    pwd.setForeground(Color.WHITE);
    user_type = new JLabel("用户类型");
    user_type.setFont(new Font("Serif", Font.BOLD, 12));
    user_type.setForeground(Color.WHITE);
    welcome = new JLabel("超市管理系统", new ImageIcon("icon/login.png"),
        SwingConstants.CENTER);
    welcome.setFont(new Font("Serif", Font.PLAIN, 20));
    welcome.setForeground(Color.ORANGE);
    hint = new JLabel("用户名默认为admin,密码为123456");
    hint.setFont(new Font("Serif", Font.BOLD, 14));
    hint.setForeground(Color.PINK);
    user_tf = new JTextField("admin", 14);
    pwd_tf = new JPasswordField("123456", 14);

    // 设置GridBagLayout布局
    dialog.add(welcome, new GBC(0, 0, 2, 1).setAnchor(GBC.CENTER));
    dialog.add(user, new GBC(0, 1).setAnchor(GBC.EAST));
    dialog.add(user_tf, new GBC(1, 1).setFill(GBC.WEST).setInset(1));
    dialog.add(pwd, new GBC(0, 2).setAnchor(GBC.EAST));
    dialog.add(pwd_tf, new GBC(1, 2).setFill(GBC.WEST).setInset(1));
    dialog.add(user_type, new GBC(0, 3).setAnchor(GBC.EAST));
    dialog.add(this.initalComboBox(), new GBC(1, 3).setFill(GBC.WEST).setInset(
        1));
    dialog.add(ok, new GBC(0, 4).setAnchor(GBC.EAST));
    dialog.add(cancel, new GBC(1, 4).setAnchor(GBC.EAST));
    dialog.add(hint, new GBC(0, 6, 2, 1).setAnchor(GBC.CENTER));
    dialog.getContentPane().setBackground(Color.BLACK);
    dialog.setVisible(true);
  }

  /**
   * 初始化用户类型的下拉列表框
   * 
   * @return user_typeBox 返回一个用户类型下拉列表框
   */
  public JComboBox initalComboBox() {
    user_typeBox = new JComboBox();
    user_typeBox.setEditable(false);
    user_typeBox.addItem("系统管理员");
    user_typeBox.addItem("POS端用户");
    return user_typeBox;
  }

  /**
   * 事件处理:对用户输入的用户名称,用户密码,用户类型与数据库中进行核对
   */
  public void actionPerformed(ActionEvent e) {
    String name = e.getActionCommand();
    if (e.getActionCommand().equals("登录")) {
      if (user_tf.getText().equals("")) {
        JOptionPane.showMessageDialog(null, "用户名不能为空");
        return;
      }
      if (new String(pwd_tf.getPassword()).equals("")) {
        JOptionPane.showMessageDialog(null, "密码不能为空");
        return;
      }
      if (upd.findUser(user_tf.getText(), String.valueOf(pwd_tf.getPassword()),
          user_typeBox.getSelectedItem().toString())) {
        if (user_typeBox.getSelectedItem().toString().equals("系统管理员")) {
          MainFrameFactory.getInstance(name).getContainer();
          dialog.setVisible(false);
          dialog.dispose();
        } else if (user_typeBox.getSelectedItem().toString().equals("POS端用户")) {
          PosFrameFactory.getInstance(name).getContainer();
          dialog.setVisible(false);
          dialog.dispose();
        }
      } else {
        JOptionPane.showMessageDialog(null, "用户名或密码错误", "提示",
            JOptionPane.ERROR_MESSAGE);
      }
    } else if (e.getActionCommand().equals("退出")) {
      int ch = JOptionPane.showConfirmDialog(null, "确实退出系统？", "友情提示",
          JOptionPane.YES_NO_OPTION);
      if (ch == JOptionPane.YES_OPTION) {
        dialog.setVisible(false);
        dialog.dispose();
      }
    }
  }

  /**
   * @param args
   *            从命令行输入的字符串
   */
  public static void main(String[] args) {
    try {
      UIManager
          .setLookAndFeel("com.birosoft.liquid.LiquidLookAndFeel");
    } catch (InstantiationException e1) {

      e1.printStackTrace();
    } catch (IllegalAccessException e1) {

      e1.printStackTrace();
    } catch (UnsupportedLookAndFeelException e1) {

      e1.printStackTrace();
    } catch (ClassNotFoundException e) {

    }
    new LoginFrame();
  }
}