Java（仿QQ）

未完待续

项目流程：

前要：

数据库的处理

1.首先我们把下载的MySQL打开，得到这样一个界面

2.我们输入我们之前设定的数据库密码，就正式可以操作数据库

3.接着我们首先创建一个数据库

创建数据库的语句格式为：

create database 数据库名;

4.接下来我们再在此数据库下创建一个数据表，我们首先要使用这个数据库

使用数据库的语句格式为：

use 数据库名;

然后在创建数据表
创建数据表的语句格式为：

CREATE TABLE IF NOT EXISTS 表单名字 (
   number VARCHAR(30),
   username VARCHAR(30),
   password VARCHAR(30),
   PRIMARY KEY ( number )
)ENGINE=InnoDB DEFAULT CHARSET=utf8;

这样子就建立了一个表单
然后我们在插入数据
数据表中插入数据的语句格式为：

INSERT INTO 表单名字 ( number,username,password )
          VALUES( 1, 123456,123456);

这时候我们在
得到表单信息的语句格式：

select * from 表单名字;

我们就可以得到一个表单数据
具体实例如下

使用的工具类：
1.界面居中的工具类：

package qqtools;

import java.awt.Component;
import java.awt.Toolkit;

public class GUItools {
	// JAVA提供的GUI默认工具类对象
	static Toolkit kit = Toolkit.getDefaultToolkit();

	// 将指定组件屏幕居中
	public static void center(Component c) {
		int x = (kit.getScreenSize().width - c.getWidth()) / 2;
		int y = (kit.getScreenSize().height - c.getHeight()) / 2;
		c.setLocation(x, y);
	}
}

2.连接数据库的工具类

package qqtools;

import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;

public class JDBCUTils {
	//连接数据库
	public static java.sql.Connection getConnection() throws SQLException, ClassNotFoundException {
		Class.forName("com.mysql.jdbc.Driver");
		String url = "jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8";
		String username = "root";//数据库用户名
		String password = "wankun.20011126";//数据库密码
		java.sql.Connection conn = DriverManager.getConnection(url, username, password);//获取数据库连接
		return conn;
	}
	
	//关闭数据库连接，释放资源
	public static void release(Statement stmt, Connection conn) {
		if (stmt != null) {
			try {
				stmt.close();
			} catch (SQLException e) {
				// TODO 自动生成的 catch 块
				e.printStackTrace();
			}
			stmt = null;
		}
		if (conn != null) {
			try {
				conn.close();
			} catch (SQLException e) {
				// TODO 自动生成的 catch 块
				e.printStackTrace();
			}
			conn = null;
		}

	}

	public static void release(ResultSet rs, Statement stmt, Connection conn) {
		if (rs != null) {
			try {
				rs.close();
			} catch (SQLException e) {
				// TODO 自动生成的 catch 块
				e.printStackTrace();
			}
			rs = null;
		}
		release(stmt, conn);
	}
}

3.生成验证码的工具类：

在这里插入代码片package qqtools;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.util.Random;

import javax.swing.JPanel;

public class VerificationTools extends JPanel {
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	static StringBuilder sb;

	public void paint(Graphics g) {
		int width = 160; // 定义验证码图片的宽度
		int height = 40; // 定义验证码图片的高度
		g.setColor(Color.LIGHT_GRAY); // 设置上下文颜色
		g.fillRect(0, 0, width, height); // 填充验证码背景
		g.setColor(Color.BLACK); // 设置上下文颜色
		g.drawRect(0, 0, width - 1, height - 1); // 绘制边框
		// 绘制干扰点
		Random r = new Random();
		for (int i = 0; i < 100; i++) {
			int x = r.nextInt(width) - 2;
			int y = r.nextInt(height) - 2;
			g.drawOval(x, y, 2, 2);
		}
		g.setFont(new Font("黑体", Font.BOLD, 30)); // 设置验证码字体
		g.setColor(Color.BLUE); // 设置验证码颜色
		// 产生随机验证码
		char[] chars = ("0123456789abcdefghijkmnopqrstuvwxyzABCDEFG" + "HIJKLMNPQRSTUVWXYZ").toCharArray();
		sb = new StringBuilder();
		for (int i = 0; i < 4; i++) {
			int pos = r.nextInt(chars.length);
			char c = chars[pos];
			sb.append(c + " ");
		}
		g.drawString(sb.toString(), 20, 30); // 写入验证码
	}

	public static String string() {
		return sb.toString().replace(" ", "");
	}
}

1.登录界面：

登录界面主要使用的有
1.LoginFrame.java

package qq.view;

import java.sql.SQLException;

import javax.swing.JFrame;
import javax.swing.JPopupMenu;

import qq.Component.ButtomPanel;
import qq.Component.TopPanel;
import qq.controller.RegisterFrameController;
import qq.service.LoginService;
import qqtools.GUItools;

@SuppressWarnings("serial")
public abstract class LoginFrame extends JFrame {
	public LoginFrame() {
		this.init();// 初始化操作
		this.addComponent();// 添加组件
		this.addListener();// 添加监听器
	}

	private void init() {
		JPopupMenu.setDefaultLightWeightPopupEnabled(false);
		this.setSize(532, 405);// 窗体大小与位置
		this.setUndecorated(true);// 设置JFrame窗口边框不显示
		this.setResizable(false); // 禁止改变窗口大小
		GUItools.center(this);// 设置窗口在屏幕上的位置
	}

	private void addComponent() {
		this.add(new TopPanel());// 上半部分的布局
		this.add(new ButtomPanel());// 下半部分的布局
	}

	// 添加监听器
	private void addListener() {
		TopPanel.getExitbutton().addActionListener(event -> this.dispose());
		TopPanel.getMinimizebutton().addActionListener(event -> this.setExtendedState(JFrame.ICONIFIED));
		TopPanel.getSetupbutton().addActionListener(event -> this.setExtendedState(JFrame.MAXIMIZED_BOTH));
		ButtomPanel.getJb().addActionListener(event -> {
			try {
				LoginService.Login();
			} catch (ClassNotFoundException e) {
				// TODO 自动生成的 catch 块
				e.printStackTrace();
			} catch (SQLException e) {
				// TODO 自动生成的 catch 块
				e.printStackTrace();
			}
		});
		ButtomPanel.getRegister().addActionListener(event ->{
				new RegisterFrameController().setVisible(true);
			
		});
	}
}

package qq.Component;

import java.awt.*;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;

@SuppressWarnings("serial")
public class TopPanel extends Panel {
	// 上半部分的背景图
	private static ImageIcon image = new ImageIcon("QQ.jpg");
	private static ImageIcon image1 = new ImageIcon("qqtx.jpg");
	private static JLabel background = new JLabel(image);
	private static JLabel backgrounds = new JLabel(image1);
	// 关闭按钮
	private static JButton exitbutton = new JButton();
	private static ImageIcon exitsquare = new ImageIcon("exitbutton.jpg");
	// 最小化按钮
	private static JButton minimizebutton = new JButton();
	private static ImageIcon minimizesquare = new ImageIcon("minimizebutton.jpg");
	// 设置按钮
	private static JButton setupbutton = new JButton();
	private static ImageIcon setupsquare = new ImageIcon("setupbutton.jpg");

	public TopPanel() {
		this.init();// 初始化操作
		this.addComponent();// 添加组件
	}

	private void init() {
		this.setLayout(null);
		this.setBackground(new Color(255, 255, 255));// 设置背景颜色
		this.setBounds(0, 0, image.getIconWidth() + image1.getIconWidth(),
				image.getIconHeight() + image1.getIconHeight());// 设置panel的位置
		background.setBounds(0, 0, image.getIconWidth(), image.getIconHeight());// 设置背景图片的位置及尺寸
		this.add(background);
		backgrounds.setBounds(-5, image.getIconHeight(), image1.getIconWidth(), image1.getIconHeight());// 设置背景图片的位置及尺寸
		this.add(backgrounds);
	}

	private void addComponent() {
		// 退出按钮
		getExitbutton().setIcon(exitsquare);// 把图片放到按钮上
		getExitbutton().setBounds(532 - exitsquare.getIconWidth(), 0, exitsquare.getIconWidth(),
				exitsquare.getIconHeight());// 设置按钮的位置和大小
		getExitbutton().setBorderPainted(false);// 取消按钮边框效果
		this.add(getExitbutton());// 将按钮添加到panel中
		// 最小化按钮
		getMinimizebutton().setIcon(minimizesquare);
		getMinimizebutton().setBounds(532 - exitsquare.getIconWidth() - minimizesquare.getIconWidth() - 6, 0,
				minimizesquare.getIconWidth() - 1, minimizesquare.getIconHeight());
		getMinimizebutton().setBorderPainted(false);
		this.add(getMinimizebutton());
		// 设置按钮
		getSetupbutton().setIcon(setupsquare);
		getSetupbutton().setBounds(
				532 - exitsquare.getIconWidth() - minimizesquare.getIconWidth() - setupsquare.getIconWidth(), 0,
				setupsquare.getIconWidth(), setupsquare.getIconHeight());
		getSetupbutton().setBorderPainted(false);
		this.add(getSetupbutton());
	}

	public static JButton getExitbutton() {
		return exitbutton;
	}

	public void setExitbutton(JButton exitbutton) {
		TopPanel.exitbutton = exitbutton;
	}

	public static JButton getMinimizebutton() {
		return minimizebutton;
	}

	public void setMinimizebutton(JButton minimizebutton) {
		TopPanel.minimizebutton = minimizebutton;
	}

	public static JButton getSetupbutton() {
		return setupbutton;
	}

	public static void setSetupbutton(JButton setupbutton) {
		TopPanel.setupbutton = setupbutton;
	}
}

package qq.Component;

import java.awt.*;

import javax.swing.*;

@SuppressWarnings("serial")
public class ButtomPanel extends Panel {
	private static String str[] = { "1169580201", "1519179206", "8436115200" };
	private static JComboBox<Object> centerjco = new JComboBox<Object>(str);
	private static JPasswordField jpaCenter = new JPasswordField();
	private static JCheckBox jch2 = new JCheckBox("自动登录");
	private static JCheckBox jch1 = new JCheckBox("记住密码");
	private static JLabel label = new JLabel("找回密码");
	private static ImageIcon image1 = new ImageIcon("login.jpg");
	private static JButton jb = new JButton(image1);
	private static JButton register = new JButton("注册账号");

	public ButtomPanel() {
		this.init();// 初始化操作
		this.addComponent();// 添加组件
	}

	public void init() {
		this.setLayout(null);// 设置panel的布局格式
		this.setBackground(new Color(255, 255, 255));// 设置panel的背景颜色
		this.setBounds(16, 320, 400, 400);// 设置panel的位置和大小
	}

	public void addComponent() {
		// 添加账号下拉框
		getCenterjco().setEditable(true);
		getCenterjco().setBounds(118, 200, 297, 43);
		getCenterjco().setFont(new Font("Calibri ", 15, 27)); // 设置下拉框内容字体
		this.add(getCenterjco());

		// 创建一个JPasswordField密码框组件
		getJpaCenter().setFont(new Font("Calibri ", 15, 27)); // 设置密码框字体
		getJpaCenter().setBounds(118, 249, 297, 43);// 设置密码框的位置和大小
		this.add(getJpaCenter());

		// 创建自动登录和记住密码多选框组件
		jch2.setBackground(new Color(255, 255, 255));
		jch2.setFocusPainted(false);
		jch2.setFont(new Font("宋体", 0, 12));
		jch2.setBounds(118, 300, 80, 20);
		this.add(jch2);
		jch1.setBackground(new Color(255, 255, 255));
		jch1.setFocusPainted(false);// 设置选中时不显示边框
		jch1.setFont(new Font("宋体", 0, 13));
		jch1.setBounds(240, 300, 80, 20);
		this.add(jch1);

		// 添加注册账号超链接
		label.setFont(new Font("宋体", 0, 13));
		label.setBounds(363, 300, 80, 20);
		this.add(label);

		// 添加登录按钮
		getJb().setFont(new Font("宋体", 0, 13));
		getJb().setBounds(118, 330, image1.getIconWidth(), image1.getIconHeight());
		getJb().setFocusPainted(false);
		getJb().setBorderPainted(false);
		this.add(getJb());

		// 添加注册账号超链接
		register.setFont(new Font("宋体", 0, 13));
		register.setBounds(0, 370, 100, 20);
		register.setBackground(new Color(255, 255, 255));
		register.setBorderPainted(false);
		this.add(register);
	}

	public static JButton getJb() {
		return jb;
	}

	public static void setJb(JButton jb) {
		ButtomPanel.jb = jb;
	}

	public static JPasswordField getJpaCenter() {
		return jpaCenter;
	}

	public static void setJpaCenter(JPasswordField jpaCenter) {
		ButtomPanel.jpaCenter = jpaCenter;
	}

	public static JComboBox<Object> getCenterjco() {
		return centerjco;
	}

	public static void setCenterjco(JComboBox<Object> centerjco) {
		ButtomPanel.centerjco = centerjco;
	}

	public static JButton getRegister() {
		return register;
	}

	public static void setRegister(JButton register) {
		ButtomPanel.register = register;
	}
}

package qq.service;

import java.sql.ResultSet;
import java.sql.SQLException;

import qq.Component.ButtomPanel;
import qq.app.QQAPP;
import qq.controller.EnterFrameController;
import qq.controller.UnenterFrameController;
import qqtools.JDBCUTils;

public class LoginService {
	public static void Login() throws ClassNotFoundException, SQLException {
		char[] values = ButtomPanel.getJpaCenter().getPassword();
		String password = new String(values);
		String username = ButtomPanel.getCenterjco().getSelectedItem().toString();
		java.sql.Connection conn = null;
		java.sql.Statement stmt = null;
		ResultSet rs = null;
		boolean flag = false;
		conn = JDBCUTils.getConnection();//连接数据库
		stmt = conn.createStatement();
		String sql = "select * from QQ";//sql语句
		rs = stmt.executeQuery(sql);//执行语句
		while (rs.next()) {
			if (password.equals(rs.getString("password")) && username.equals(rs.getString("username"))) {
				flag = true;
				break;
			}
		}
		
		if (flag) {
			System.out.println("登录成功");
			QQAPP.getLoginFrame().dispose();
			new EnterFrameController().setVisible(true);
		} else {
			System.out.print("登录失败");
			new UnenterFrameController().setVisible(true);
		}
	}

}

2.注册界面

package qq.view;

import java.awt.Color;
import java.sql.SQLException;

import javax.swing.JFrame;
import javax.swing.JPopupMenu;

import qq.Component.RegisterPanel;
import qq.service.RegisterService;
import qqtools.GUItools;

@SuppressWarnings("serial")
public class RegisterFrame extends JFrame {
	public RegisterFrame() {
		this.init();// 初始化操作
		this.addComponent();// 添加组件
		this.addListener();// 添加监听器
	}

	private void init() {
		JPopupMenu.setDefaultLightWeightPopupEnabled(false);
		this.setSize(532, 405);// 窗体大小与位置
		this.setUndecorated(true);// 设置JFrame窗口边框不显示
		this.setResizable(false); // 禁止改变窗口大小
		GUItools.center(this);// 设置窗口在屏幕上的位置
		this.setBackground(new Color(255, 255, 255));// 设置背景颜色
	}

	private void addComponent() {
		this.add(new RegisterPanel());
	}

	// 添加监听器
	private void addListener() {
		RegisterPanel.getExitbutton().addActionListener(event -> this.dispose());
		RegisterPanel.getMinimizebutton().addActionListener(event -> this.setExtendedState(JFrame.ICONIFIED));
		RegisterPanel.getSetupbutton().addActionListener(event -> {
			try {
				RegisterService.Register();
			} catch (ClassNotFoundException | SQLException e) {
				// TODO 自动生成的 catch 块
				e.printStackTrace();
			}
		});
	}
}

package qq.Component;

import java.awt.Color;
import java.awt.Font;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

import qqtools.VerificationTools;

@SuppressWarnings("serial")
public class RegisterPanel extends JPanel {
	private static ImageIcon image = new ImageIcon("Register.jpg");
	private static JLabel background = new JLabel(image);
	private static JButton exitbutton = new JButton();
	private static ImageIcon exitsquare = new ImageIcon("exitbutton2.jpg");
	private static JButton minimizebutton = new JButton();
	private static ImageIcon minimizesquare = new ImageIcon("minimizebutton2.jpg");
	private static JLabel label1 = new JLabel("昵称:");
	private static JTextField input = new JTextField(20);
	private static JLabel label2 = new JLabel("密码:");
	private static JPasswordField jpaCenter = new JPasswordField();
	private static JLabel label3 = new JLabel("电话号码:");
	private static JTextField phonenumber = new JTextField(11);
	private static JLabel label4=new JLabel("验证码:");
	private static JTextField  Verification= new JTextField(11);
	private static VerificationTools vt=new VerificationTools();
	private static JButton setupbutton = new JButton();
	private static ImageIcon setupsquare = new ImageIcon("register1(1).jpg");

	public RegisterPanel() {
		this.init();// 初始化操作
		this.addComponent();// 添加组件
	}

	private void init() {
		this.setLayout(null);
		this.setBackground(new Color(255, 255, 255));// 设置背景颜色
		this.setBounds(0, 0, image.getIconWidth(), image.getIconHeight());// 设置panel的位置
		background.setBounds(0, 0, image.getIconWidth(), image.getIconHeight());// 设置背景图片的位置及尺寸
		this.add(background);
	}

	private void addComponent() {
		getExitbutton().setIcon(exitsquare);// 把图片放到按钮上
		getExitbutton().setBounds(532 - exitsquare.getIconWidth() + 5, 2, exitsquare.getIconWidth(),
				exitsquare.getIconHeight());// 设置按钮的位置和大小
		getExitbutton().setBorderPainted(false);// 取消按钮边框效果
		this.add(getExitbutton());// 将按钮添加到panel中
		getMinimizebutton().setIcon(minimizesquare);
		getMinimizebutton().setBounds(532 - exitsquare.getIconWidth() - minimizesquare.getIconWidth() + 5, 1,
				minimizesquare.getIconWidth(), minimizesquare.getIconHeight());
		getMinimizebutton().setBorderPainted(false);
		this.add(getMinimizebutton());
		getSetupbutton().setIcon(setupsquare);
		getSetupbutton().setBounds(120, 330, setupsquare.getIconWidth(), setupsquare.getIconHeight());
		getSetupbutton().setBorderPainted(false);
		this.add(getSetupbutton());
		label1.setFont(new Font("Calibri ", 15, 27));
		label1.setBounds(0, 40, 100, 100);
		this.add(label1);
		input.setFont(new Font("Calibri ", 15, 27)); 
		input.setBounds(118, 70, 297, 43);
		this.add(input);
		label2.setFont(new Font("Calibri ", 15, 27));
		label2.setBounds(0, 125, 70, 50);
		this.add(label2);
		getJpaCenter().setFont(new Font("Calibri ", 15, 27)); // 设置密码框字体
		getJpaCenter().setBounds(118, 125, 297, 43);// 设置密码框的位置和大小
		this.add(getJpaCenter());
		label3.setFont(new Font("Calibri ", 15, 27));
		label3.setBounds(0, 155, 170, 100);
		this.add(label3);
		phonenumber.setFont(new Font("Calibri ", 15, 27)); 
		phonenumber.setBounds(118, 185, 297, 43);
		this.add(phonenumber);
		label4.setFont(new Font("Calibri ", 15, 27));
		label4.setBounds(0, 250, 100, 50);
		this.add(label4);
		Verification.setFont(new Font("Calibri ", 15, 27)); 
		Verification.setBounds(118, 250, 135, 43);
		this.add(Verification);
		vt.setBounds(263, 250, 150, 60);
		this.add(vt);

	}
	public static JButton getSetupbutton() {
		return setupbutton;
	}

	public static void setSetupbutton(JButton setupbutton) {
		UnenterPanel.setSetupbutton(setupbutton);
	}

	public static ImageIcon getSetupsquare() {
		return setupsquare;
	}

	public static void setSetupsquare(ImageIcon setupsquare) {
		UnenterPanel.setSetupsquare(setupsquare);
	}

	public static JButton getMinimizebutton() {
		return minimizebutton;
	}

	public static void setMinimizebutton(JButton minimizebutton) {
		UnenterPanel.setMinimizebutton(minimizebutton);
	}

	public static ImageIcon getMinimizesquare() {
		return minimizesquare;
	}

	public static void setMinimizesquare(ImageIcon minimizesquare) {
		UnenterPanel.setMinimizesquare(minimizesquare);
	}

	public static ImageIcon getImage() {
		return image;
	}

	public static void setImage(ImageIcon image) {
		UnenterPanel.setImage(image);
	}

	public static JButton getExitbutton() {
		return exitbutton;
	}

	public static void setExitbutton(JButton exitbutton) {
		UnenterPanel.setExitbutton(exitbutton);
	}

	public static ImageIcon getExitsquare() {
		return exitsquare;
	}

	public static void setExitsquare(ImageIcon exitsquare) {
		UnenterPanel.setExitsquare(exitsquare);
	}

	public static JPasswordField getJpaCenter() {
		return jpaCenter;
	}

	public static void setJpaCenter(JPasswordField jpaCenter) {
		RegisterPanel.jpaCenter = jpaCenter;
	}


	public static void setBackground(JLabel background) {
		RegisterPanel.background = background;
	}

	public static JLabel getLabel1() {
		return label1;
	}

	public static void setLabel1(JLabel label1) {
		RegisterPanel.label1 = label1;
	}

	public static JTextField getInput() {
		return input;
	}

	public static void setInput(JTextField input) {
		RegisterPanel.input = input;
	}

	public static JLabel getLabel2() {
		return label2;
	}

	public static void setLabel2(JLabel label2) {
		RegisterPanel.label2 = label2;
	}

	public static JLabel getLabel3() {
		return label3;
	}

	public static void setLabel3(JLabel label3) {
		RegisterPanel.label3 = label3;
	}

	public static JTextField getPhonenumber() {
		return phonenumber;
	}

	public static void setPhonenumber(JTextField phonenumber) {
		RegisterPanel.phonenumber = phonenumber;
	}

	public static JLabel getLabel4() {
		return label4;
	}

	public static void setLabel4(JLabel label4) {
		RegisterPanel.label4 = label4;
	}

	public static JTextField getVerification() {
		return Verification;
	}

	public static void setVerification(JTextField verification) {
		Verification = verification;
	}

	public static VerificationTools getVt() {
		return vt;
	}

	public static void setVt(VerificationTools vt) {
		RegisterPanel.vt = vt;
	}
	
}

package qq.service;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Random;

import qq.Component.RegisterPanel;
import qqtools.JDBCUTils;
import qqtools.VerificationTools;

public class RegisterService {
	@SuppressWarnings("unused")
	public static void Register() throws ClassNotFoundException, SQLException {
		char[] values = RegisterPanel.getJpaCenter().getPassword();
		String password = new String(values);
		String username = RegisterPanel.getInput().getText();
		String phonenumber = RegisterPanel.getPhonenumber().getText();
		String code = RegisterPanel.getVerification().getText();
		java.sql.Connection conn = null;
		java.sql.Statement stmt = null;
		ResultSet rs = null;
		boolean flag = false;
		conn = JDBCUTils.getConnection();// 连接数据库
		stmt = conn.createStatement();
		String sql = "select * from QQ";// sql语句
		rs = stmt.executeQuery(sql);// 执行语句
		while (rs.next()) {
			if (username.equals(rs.getString("username")) && phonenumber.equals(rs.getString("phonenumber"))) {
				flag = true;
				break;
			}
		}
		if (!flag && code.equals(VerificationTools.string())) {
			Random r = new Random();
			StringBuilder sb;
			char[] chars = ("0123456789").toCharArray();
			sb = new StringBuilder();
			for (int i = 1; i <= 10; i++) {
				int pos = r.nextInt(chars.length);
				char c = chars[pos];
				sb.append(c);
			}
			sql = "select * from QQ";// sql语句
			rs = stmt.executeQuery(sql);// 执行语句
			boolean flag1 = false, flag2 = false;
			String number = null;
			while (rs.next()) {
				if (username.equals(rs.getString("username"))) {
					flag1 = true;
				}
				if (phonenumber.equals(rs.getString("phonenumber"))) {
					flag2 = true;
				}
			}
			System.out.println("账号为"+sb);
			sql = "INSERT INTO QQ(number,nickname,username,password,phonenumber)" + "VALUES(" + "15" + "," + "\""
					+ username + "\"" + "," + sb + "," + password + "," + phonenumber + ");";
			System.out.println(sql);
			int re = stmt.executeUpdate(sql);// 执行语句
		} else {
			System.out.print("注册失败");
		}
	}
}

3.登录成功界面：

package qq.view;

import javax.swing.*;

import qq.Component.EnterPanel;

@SuppressWarnings("serial")
public class EnterFrame extends JFrame {
	public EnterFrame() {
		this.init();// 初始化操作
		this.addComponent();// 添加组件
		this.addListener();// 添加监听器
	}

	private void init() {
		JPopupMenu.setDefaultLightWeightPopupEnabled(false);
		this.setUndecorated(true);// 设置JFrame窗口边框不显示
		this.setResizable(false); // 禁止改变窗口大小
		this.setLayout(null);
		this.setBounds(1500, 200, 348, 695);

	}

	private void addComponent() {
		this.add(new EnterPanel());
	}

	// 添加监听器
	private void addListener() {
		EnterPanel.getExitbutton().addActionListener(event -> this.dispose());
		EnterPanel.getMinimizebutton().addActionListener(event -> this.setExtendedState(JFrame.ICONIFIED));
	}
}

package qq.Component;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;

@SuppressWarnings("serial")
public class EnterPanel extends JPanel {
	private static ImageIcon image = new ImageIcon("enter.jpg");
	private static JLabel background = new JLabel(image);
	private static JButton exitbutton = new JButton();
	private static ImageIcon exitsquare = new ImageIcon("exitbutton1.jpg");
	private static JButton minimizebutton = new JButton();
	private static ImageIcon minimizesquare = new ImageIcon("minimizebutton1.jpg");

	public EnterPanel() {
		this.init();// 初始化操作
		this.addComponent();// 添加组件
	}

	private void init() {
		this.setLayout(null);
		this.setBounds(0, 0, image.getIconWidth(), image.getIconHeight());// 设置panel的位置
		background.setBounds(0, 0, image.getIconWidth(), image.getIconHeight());// 设置背景图片的位置及尺寸
		this.add(background);
	}

	private void addComponent() {
		getExitbutton().setIcon(exitsquare);// 把图片放到按钮上
		getExitbutton().setBounds(image.getIconWidth() - exitsquare.getIconWidth(), 0, exitsquare.getIconWidth(),
				exitsquare.getIconHeight());// 设置按钮的位置和大小
		getExitbutton().setBorderPainted(false);// 取消按钮边框效果
		this.add(getExitbutton());// 将按钮添加到panel中
		// 最小化按钮
		getMinimizebutton().setIcon(minimizesquare);
		getMinimizebutton().setBounds(
				image.getIconWidth() - exitsquare.getIconWidth() - minimizesquare.getIconWidth() + 6, 0,
				minimizesquare.getIconWidth() - 1, minimizesquare.getIconHeight());
		getMinimizebutton().setBorderPainted(false);
		this.add(getMinimizebutton());
	}

	public static JButton getExitbutton() {
		return exitbutton;
	}

	public static void setExitbutton(JButton exitbutton) {
		EnterPanel.exitbutton = exitbutton;
	}

	public static JButton getMinimizebutton() {
		return minimizebutton;
	}

	public static void setMinimizebutton(JButton minimizebutton) {
		EnterPanel.minimizebutton = minimizebutton;
	}
}

4.登录失败界面：

package qq.view;

import javax.swing.*;

import qq.Component.UnenterPanel;
import qqtools.GUItools;

@SuppressWarnings("serial")
public class UnenterFrame extends JFrame {
	public UnenterFrame() {
		this.init();// 初始化操作
		this.addComponent();// 添加组件
		this.addListener();// 添加监听器
	}

	private void init() {
		JPopupMenu.setDefaultLightWeightPopupEnabled(false);
		this.setSize(532, 405);// 窗体大小与位置
		this.setUndecorated(true);// 设置JFrame窗口边框不显示
		this.setResizable(false); // 禁止改变窗口大小
		GUItools.center(this);// 设置窗口在屏幕上的位置
	}

	private void addComponent() {
		this.add(new UnenterPanel());
	}

	// 添加监听器
	private void addListener() {
		UnenterPanel.getExitbutton().addActionListener(event -> this.dispose());
		UnenterPanel.getMinimizebutton().addActionListener(event -> this.setExtendedState(JFrame.ICONIFIED));
		UnenterPanel.getSetupbutton().addActionListener(event -> this.dispose());
	}
}

package qq.Component;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;

@SuppressWarnings("serial")
public class UnenterPanel extends JPanel {
	private static ImageIcon image = new ImageIcon("unenter.jpg");
	private static JLabel background = new JLabel(image);
	private static JButton exitbutton = new JButton();
	private static ImageIcon exitsquare = new ImageIcon("exitbutton2.jpg");
	private static JButton minimizebutton = new JButton();
	private static ImageIcon minimizesquare = new ImageIcon("minimizebutton2.jpg");
	private static JButton setupbutton = new JButton();
	private static ImageIcon setupsquare = new ImageIcon("setupbutton2.jpg");

	public UnenterPanel() {
		this.init();// 初始化操作
		this.addComponent();// 添加组件
	}

	private void init() {
		this.setLayout(null);
		this.setBounds(0, 0, image.getIconWidth(), image.getIconHeight());// 设置panel的位置
		background.setBounds(0, 0, image.getIconWidth(), image.getIconHeight());// 设置背景图片的位置及尺寸
		this.add(background);
	}

	private void addComponent() {
		getExitbutton().setIcon(exitsquare);// 把图片放到按钮上
		getExitbutton().setBounds(532 - exitsquare.getIconWidth(), 0, exitsquare.getIconWidth(),
				exitsquare.getIconHeight());// 设置按钮的位置和大小
		getExitbutton().setBorderPainted(false);// 取消按钮边框效果
		this.add(getExitbutton());// 将按钮添加到panel中
		getMinimizebutton().setIcon(minimizesquare);
		getMinimizebutton().setBounds(532 - exitsquare.getIconWidth() - minimizesquare.getIconWidth() + 5, 0,
				minimizesquare.getIconWidth(), minimizesquare.getIconHeight());
		getMinimizebutton().setBorderPainted(false);
		this.add(getMinimizebutton());
		getSetupbutton().setIcon(setupsquare);
		getSetupbutton().setBounds(422, 375, setupsquare.getIconWidth(), setupsquare.getIconHeight());
		getSetupbutton().setBorderPainted(false);
		this.add(getSetupbutton());

	}

	public static JButton getSetupbutton() {
		return setupbutton;
	}

	public static void setSetupbutton(JButton setupbutton) {
		UnenterPanel.setupbutton = setupbutton;
	}

	public static ImageIcon getSetupsquare() {
		return setupsquare;
	}

	public static void setSetupsquare(ImageIcon setupsquare) {
		UnenterPanel.setupsquare = setupsquare;
	}

	public static JButton getMinimizebutton() {
		return minimizebutton;
	}

	public static void setMinimizebutton(JButton minimizebutton) {
		UnenterPanel.minimizebutton = minimizebutton;
	}

	public static ImageIcon getMinimizesquare() {
		return minimizesquare;
	}

	public static void setMinimizesquare(ImageIcon minimizesquare) {
		UnenterPanel.minimizesquare = minimizesquare;
	}

	public static ImageIcon getImage() {
		return image;
	}

	public static void setImage(ImageIcon image) {
		UnenterPanel.image = image;
	}

	public static JButton getExitbutton() {
		return exitbutton;
	}

	public static void setExitbutton(JButton exitbutton) {
		UnenterPanel.exitbutton = exitbutton;
	}

	public static ImageIcon getExitsquare() {
		return exitsquare;
	}

	public static void setExitsquare(ImageIcon exitsquare) {
		UnenterPanel.exitsquare = exitsquare;
	}
}