Java登录界面简单设计

 package cn.com.view;

 import java.awt.Color;
 import java.awt.Font;
 import java.awt.SystemColor;
 import java.awt.Toolkit;
 import java.awt.event.ActionEvent;
 import java.awt.event.MouseEvent;

 import javax.swing.ImageIcon;
 import javax.swing.JButton;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
 import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JPasswordField;
 import javax.swing.JProgressBar;
 import javax.swing.JTextField;

 import sun.awt.HorizBagLayout;

 import cn.com.beans.UserInfoBean;
 import cn.com.beans.UserInfoViewBean;
 import cn.com.daos.UserInfoDAO;
 import cn.com.listeners.LoginFrame_btnLogin_ActionListener;
 import cn.com.listeners.LoginFrame_btnReset_ActionListener;
 import cn.com.listeners.LoginFrame_lblRegist_MouseListener;

 public class LoginFrame extends JFrame {
     JPanel pnlMain;
     JButton btnLogin;
     JButton btnReset;
     JLabel lblUserName;
     JLabel lblUserPwd;
     JLabel lblTitle;
     JLabel lblRegist;
     JTextField txtUserName;
     JPasswordField pwdUserPwd;
     JProgressBar progressBar;
     JLabel lblLoginStat;

     public LoginFrame() {
         pnlMain = new JPanel(null);
         btnLogin = new JButton("登录");
         btnReset = new JButton("重置");
         lblUserName = new JLabel("用户名：");
         lblUserPwd = new JLabel("密  码：");
         lblTitle = new JLabel("用户登录");
         lblRegist = new JLabel("注册");
         txtUserName = new JTextField();
         pwdUserPwd = new JPasswordField();
         progressBar = new JProgressBar();
         progressBar.setIndeterminate(false);
         progressBar.setOrientation(JProgressBar.HORIZONTAL);
         progressBar.setForeground(new Color(0, 255, 0));
         progressBar.setBounds(286, 348, 146, 14);
         init();
     }

     private void init() {
         // TODO Auto-generated method stub
         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         setIconImage(Toolkit.getDefaultToolkit().getImage("image\\e.jpg"));
         this.setBounds(100, 100, 559, 351);
         this.setLocationRelativeTo(null);
         this.setResizable(false);
         this.getContentPane().setLayout(null);
         getContentPane().setBackground(new Color(255, 255, 255));

         JLabel label = new JLabel("人事管理系统用户登录");
         label.setFont(new Font("楷体", Font.PLAIN, 40));
         label.setBackground(Color.WHITE);
         label.setBounds(79, 10, 400, 43);
         this.getContentPane().add(label);

         JLabel lblNewLabel = new JLabel("图片");
         lblNewLabel.setBounds(10, 63, 250, 250);
         this.getContentPane().add(lblNewLabel);
         lblNewLabel.setIcon(new ImageIcon("D:\\Workspaces\\PMSys\\image\\login.jpg"));

         JLabel lblUserName = new JLabel("用户名：");
         lblUserName.setFont(new Font("华文楷体", Font.BOLD, 15));
         lblUserName.setBounds(270, 100, 65, 28);
         this.getContentPane().add(lblUserName);

         JLabel lblUserPwd = new JLabel("密   码：");
         lblUserPwd.setFont(new Font("华文楷体", Font.BOLD, 15));
         lblUserPwd.setBounds(270, 163, 65, 25);
         this.getContentPane().add(lblUserPwd);

         txtUserName = new JTextField();
         txtUserName.setText("请输入用户名");
         txtUserName.setBounds(345, 97, 173, 31);
         txtUserName.setBackground(new Color(255, 255, 204));
         this.getContentPane().add(txtUserName);
         txtUserName.setColumns(10);

         pwdUserPwd = new JPasswordField();
         pwdUserPwd.setFont(new Font("宋体", Font.BOLD, 20));
         pwdUserPwd.setBounds(345, 160, 173, 28);
         pwdUserPwd.setBackground(new Color(255, 255, 204));
         this.getContentPane().add(pwdUserPwd);

         JButton btnLogin = new JButton("登录");

         btnLogin.setBounds(272, 217, 93, 43);
         this.getContentPane().add(btnLogin);

         JButton btnReset = new JButton("重置");

         btnReset.setBounds(427, 217, 93, 43);
         this.getContentPane().add(btnReset);

         lblLoginStat = new JLabel("登录中>>>>");
         lblLoginStat.setForeground(Color.RED);
         lblLoginStat.setFont(new Font("华文楷体", Font.BOLD, 15));
         lblLoginStat.setBounds(270,270,246,14);
         this.getContentPane().add(lblLoginStat);
         lblLoginStat.setVisible(false);

         progressBar.setBounds(272,284,246,14);
         progressBar.setIndeterminate(true);
         progressBar.setVisible(false);
         this.getContentPane().add(progressBar);
         this.setVisible(true);

         //添加监听事件
         btnLogin.addActionListener(new LoginFrame_btnLogin_ActionListener(this));
         btnReset.addActionListener(new LoginFrame_btnReset_ActionListener(this));
         lblRegist.addMouseListener(new LoginFrame_lblRegist_MouseListener(this));
     }

     public void btnLogin_actionPerformed(ActionEvent e){
         // TODO Auto-generated method stub

         progressBar.setVisible(true);
         lblLoginStat.setVisible(true);
         UserInfoDAO dao = new UserInfoDAO();
         String userName = this.txtUserName.getText();
         String userPwd = new String(this.pwdUserPwd.getPassword());
         if(dao.validateByNameAndPwd(userName, userPwd)) {
             UserInfoViewBean ab = dao.getUserListInfoByUserName(userName);
             new MainFrame(ab);
             this.dispose();
         }else {
 //            JOptionPane.showMessageDialog(null, "用户名或密码错误","错误",JOptionPane.ERROR_MESSAGE);
             int n = JOptionPane.showConfirmDialog(null, "密码错误，是否重新登录？", "提示",JOptionPane.YES_NO_OPTION);
             if(n == 0){
                 //progressBar.setIndeterminate(false);
                 progressBar.setVisible(false);
                 lblLoginStat.setVisible(false);
             }else{
                 System.exit(0);
             }

         }
     }
         //重置监听事件
     public void btnReset_actionPerformed(ActionEvent e) {
         // TODO Auto-generated method stub
         this.txtUserName.setText("");
         this.pwdUserPwd.setText("");
     }

     public void lblRegist_mouseClicked(MouseEvent e) {
     } 

 }