注册页面

package Client;

//看到背景图后不能看到jlabel的标签
import java.awt.Color;
import java.awt.Container;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
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.JTextField;
import DB.UserDB;


public class Register extends JFrame {
private static final long serialVersionUID = 1L;
private JTextField userName; // 用户名
private JPasswordField password; // 密码
private JPasswordField password2; // 密码
private JLabel lableUser;
private JLabel lablePwd;
private JLabel lablePwd2;
private JButton btnRegister;


public Register() {


BackgroundPanel background = new BackgroundPanel((new ImageIcon("image/bg.jpg")).getImage());
// new ImageIcon("");


background.setBounds(0, 0, 500, 500);


// JLabel label = new JLabel(background);// 把背景图片显示在标签里
// label.setBounds(0, 0, background.getIconWidth(),
// background.getIconHeight());// 把标签的大小位置设置为图片刚好填充整个面板
// System.out.println(background.getIconWidth());
// this.getLayeredPane().setLayout(null);
// // 把背景图片添加到分层窗格的最底层作为背景
// this.getLayeredPane().add(label, new Integer(Integer.MIN_VALUE));
// this.setSize(background.getIconWidth(), background.getIconHeight());
// this.setLocationRelativeTo(null);// 居中显示
// this.setAlwaysOnTop(true);// 顶层显示
// this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);


// // 创建一个容器
Container con = this.getContentPane();
 
con.add(background);
// // 用户号码登录输入框
userName = new JTextField();
userName.setBounds(200, 50, 250, 40);
userName.setFont(new Font("宋体", Font.BOLD, 20));
// 登录输入框旁边的文字
lableUser = new JLabel("填写用户名");
lableUser.setBounds(80, 50, 150, 40);
lableUser.setFont(new Font("宋体", Font.BOLD, 20));
// 密码输入框
password = new JPasswordField();
password.setBounds(200, 100, 250, 40);
password.setFont(new Font("宋体", Font.BOLD, 20));
password2 = new JPasswordField();
password2.setBounds(200, 150, 250, 40);
password2.setFont(new Font("宋体", Font.BOLD, 20));
// 密码输入框旁边的文字
lablePwd = new JLabel("填写密码");
lablePwd.setBounds(100, 100, 100, 40);
lablePwd.setFont(new Font("宋体", Font.BOLD, 20));
lablePwd2 = new JLabel("重填密码");
lablePwd2.setBounds(100, 150, 100, 40);
lablePwd2.setFont(new Font("宋体", Font.BOLD, 20));

lablePwd = new JLabel("密码");
lablePwd.setBounds(200, 190, 50, 40);
lablePwd.setFont(new Font("宋体", Font.BOLD, 20));
lablePwd.setForeground(Color.RED);

// 注册按钮
btnRegister = new JButton("注册");
btnRegister.setBounds(200, 220, 150, 50);
btnRegister.setFont(new Font("宋体", Font.BOLD, 20));
btnRegister.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String name = userName.getText();
String pwd1 = String.valueOf(password.getPassword());
String pwd2 = String.valueOf(password2.getPassword());
registerUser(name, pwd1, pwd2);
}
});
// 所有组件用容器装载
con.add(lableUser);
con.add(lablePwd);
con.add(lablePwd2);
con.add(userName);
con.add(password);
con.add(password2);
con.add(btnRegister);
this.setTitle("Register Hello");// 设置窗口标题
this.setLayout(null);// 设置布局方式为绝对定位
this.setBounds(0, 0, 550, 350);
Image image = new ImageIcon("image/icon.png").getImage();
this.setIconImage(image);// 设置窗体的标题图标
this.setResizable(false);// 窗体大小不能改变
this.setLocationRelativeTo(null);// 居中显示
this.setVisible(true);// 窗体可见
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);


}


// 注册方法
private void registerUser(String name, String pwd1, String pwd2) {
if (pwd1.equals(pwd2)) {
UserDB c = new UserDB(name, pwd2);
if (c.addsql() == true) {
JOptionPane.showMessageDialog(new JFrame(), "注册成功！\n请记住您的账号和密码", "恭喜", JOptionPane.CLOSED_OPTION);
} else {
JOptionPane.showMessageDialog(new JFrame(), "注册失败,换个用户名试试吧！", "错误", JOptionPane.ERROR_MESSAGE);
}
} else {
JOptionPane.showMessageDialog(new JFrame(), "两次输入密码不相同！", "错误", JOptionPane.ERROR_MESSAGE);
password.setText("");
password2.setText("");


}
}


class BackgroundPanel extends JPanel {
Image im;


public BackgroundPanel(Image im) {
this.im = im;
this.setOpaque(true);
}


// Draw the back ground.
public void paintComponent(Graphics g) {
super.paintComponents(g);
g.drawImage(im, 0, 0, this.getWidth(), this.getHeight(), this);


}
}


}