Java编写ATM机模拟系统(连接数据库)

墨蓝 2023-01-08 05:22 141阅读 0赞

**本篇是完整代码，我还上传了资源，资源里有完整的代码和数据库驱动，可以直接下载使用**

*初学java，在代码上的理解不够，写出的代码极为冗长，有不少的缺陷，等日后慢慢完善，若是有好的建议，请与我分享*  
一、工作任务  
输入给定的卡号和密码（初始卡号为62250028和密码为123456）时，系统能登录ATM柜员机系统，用户可以按照以下规则进行操作：  
1、查询余额：初始余额为10000元；  
2、ATM取款：每次取款金额为100的倍数，总额不超过5000元，支取金额不允许透支；  
3、ATM存款：不能出现负存款；  
4、修改密码：新密码长度不小于6位，不允许出现6位完全相同的情况，只有旧密码正确，新密码符合要求，且两次输入相同的情况下才可以成功修改密码；  
5、采用数据库存储数据，可以实现 GUI界面，也可以实现功能，结果打印到控制台上。  
二、系统设计  
**1.连接数据库类**(其他类想连接数据库，直接调用这个类即可)

package ATM;
    //此类的功能是连接数据库
    import java.sql.Connection;
    import java.sql.DriverManager;
    
    //连接数据库
    public class GetDBConnection { 
    	//DBName:数据库名 ，id : 用户名（root）password:数据库密码
    	public static Connection ConnectDB(String DBName,String id,String password) { 
    		Connection con = null;
    		String uri="jdbc:mysql://127.0.0.1:3306/"+DBName+"?useSSL=true&characterEncoding=utf-8";
    		try { 
    			Class.forName("com.mysql.jdbc.Driver");//加载驱动
    		} catch (Exception e) { }
    				
    		try { 
    			con = DriverManager.getConnection(uri,id,password);//连接
    		} catch (Exception e) { }
    		
    		return con;
    	}
    }

**2、方法类**（查询，存款，取款，改密码等方法都写在这个类中，是整篇代码的核心。其他类只是设计页面，想完成功能都需要调用这个类中的代码）

package ATM;
    //此页是基本方法页，所有的方法都放在本页，其他类通过调用本页方法来实现功能
    import java.sql.Connection;
    import java.sql.PreparedStatement;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    
    //atm的增删改查
    public class Basic_operation{ 
    	//以下三个接数据库增删改查所用的变量
    	public String sql;
    	public PreparedStatement ps;
    	public static Connection con;
    	
    	public static String cardID="";//用户卡号
    	public static String password="123456";//用户登陆密码(默认为123456)
    	
    	public static String password2="";//新密码(修改密码)
    	public static String password3="";//确认新密码(修改密码)
    	
    	public static String balanceFixed ="0";//盛放余额的变量
    	public String s="";//接收各个方法返回值的变量
    	
    	//构造方法
    	Basic_operation() { 
    		//连接数据库
    		con = GetDBConnection.ConnectDB("atmBankDatabase", "root", "");
    		if(con == null) { 
    			System.out.println("数据库连接失败");
    			return;
    		}
    		sql="select balance from account where id=?;";
    		try { 
    			
    			ps=con.prepareStatement(sql);
    			ps.setString(1, cardID);
    			ResultSet rs =ps.executeQuery();//向数据库发送数据查询语句
    			while(rs.next()) { 
    				balanceFixed = rs.getString("balance");
    			}
    		} catch (SQLException e) { 
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}	
    	}
    	
    	//数据库的增删改查都是固定的操作
    	//1.查余额
    	public String select(String cardID) throws SQLException { 
    		String 
    		sql="select balance from account where id=?;";
    		ps=con.prepareStatement(sql);
    		ps.setString(1, cardID);
    		ResultSet rs =ps.executeQuery();//向数据库发送数据查询语句
    		while(rs.next()) { 
    			balanceFixed = rs.getString("balance"); 
    		}
    		double balance_number = Double.parseDouble(balanceFixed); 
    		System.out.println("当前账户余额："+balance_number);
    		balanceFixed = String.valueOf(balance_number);
    		s="当前账户余额："+balanceFixed;
    		return s;
    	}
    	
    
    	//2.取款
    	public String Withdrawal(String cardID,String take_money2) { 
    		//take_money要取的钱数
    		boolean isNum = take_money2.matches("[0-9]+");
    		if(isNum) { 
    			double take_money = Double.parseDouble(take_money2);
    			if(take_money<=5000) { 
    				if(take_money%100 == 0) { 
    					try { 
    						//balance_number:数字格式的余额，用于和将要取的金额做比较
    						double balance_number = Double.parseDouble(balanceFixed);
    						if(take_money<=balance_number) { 
    							sql="update account set balance=?-? where id=?;";
    							ps=con.prepareStatement(sql);
    							ps.setDouble(1, balance_number);//余额
    							ps.setDouble(2, take_money);//要取的金额
    							ps.setString(3, cardID);
    							ps.executeUpdate();//注意这个executeUpdate,和查询的不一样
    							balance_number=balance_number-take_money;
    							balanceFixed=String.valueOf(balance_number);
    							System.out.println("取款成功,当前余额为："+balanceFixed);
    							s="取款成功,当前余额为："+balanceFixed;
    						}else { 
    							System.out.println("余额不足,请重新输入");
    							s="余额不足,请重新输入";
    							//Withdrawal(cardID,take_money);
    						}
    					} catch (SQLException e) { 
    						System.out.println("取款出错");
    						s="取款出错";
    					}
    				}else { 
    					System.out.println("取款金额必须是100的整数倍,请重新输入");
    					s="取款金额必须是100的整数倍,请重新输入";
    				}
    				
    			}else { 
    				System.out.println("单次取款金额不得超过5000,请重新输入");
    				s="单次取款金额不得超过5000,请重新输入";
    			}
    		}else { 
    			s="取款失败,您的输入为非数字";
    			System.out.println("取款失败,您的输入为非数字");
    		}
    		
    		
    		return s;
    	}
    	
    	//3.存款
    	public String deposit(String cardID,String m) { 
    	//用正则表达式来限制输入，确保输入是字母时不会运行异常
    		boolean isNum = m.matches("[0-9]+");
    		if(isNum) { 
    			double add_money2 = Double.parseDouble(m);
    			if(add_money2>0) { 
    				if(add_money2%100 == 0) { 
    					try { 
    						//balance_number:数字格式的余额，用于和将要取的金额做比较
    						double balance_number = Double.parseDouble(balanceFixed);
    			
    							sql="update account set balance=?+? where id=?;";
    							ps=con.prepareStatement(sql);
    							ps.setDouble(1, balance_number);//余额
    							ps.setDouble(2, add_money2);//要存的金额
    							ps.setString(3, cardID);
    							ps.executeUpdate();
    							balance_number=balance_number+add_money2;
    							balanceFixed=String.valueOf(balance_number);
    							s="存款成功 当前余额为:"+balanceFixed;
    							System.out.println("存款成功");
    							System.out.println("当前余额为："+balanceFixed);
    
    					} catch (SQLException e) { 
    						System.out.println("存款出错");	
    					}
    				}else { 
    					s="存款金额必须是100的整数倍,请重新输入";
    					System.out.println("存款金额必须是100的整数倍,请重新输入");
    				}
    			}else { 
    				s="不得输入负数,请重新输入";
    				System.out.println("不得输入负数,请重新输入");
    			}
    		}else { 
    			s="存款失败,您的输入为非数字";
    			System.out.println("存款失败,您的输入为非数字");
    		}
    		return s;
    	}
    	//4.修改密码
    	public String changePassword(String cardID,String password,String password2,String password3) { 
    		String yuanPassword="";//原密码
    		sql="select apassword from account where id=?;";
    		try { 
    			ps=con.prepareStatement(sql);
    			ps.setString(1, cardID);
    			ResultSet rs =ps.executeQuery();//向数据库发送数据查询语句
    			while(rs.next()) { 
    				yuanPassword=rs.getString("apassword");
    			}
    			
    			if(yuanPassword.equals(password)) { 
    				if(password2.length()>=6) { 
    					char[] a = password2.toCharArray();
    					if(a[0]==a[1]&&a[1]==a[2]&&a[2]==a[3]&&a[3]==a[4]&&a[4]==a[5]) { 
    						System.out.println("不可以设置全部数字相同的密码");
    						s="不可以设置全部数字相同的密码";
    					}else { 
    						if(password2.equals(password3)) { 
    							sql="update account set apassword=? where id=?;";
    							ps = con.prepareStatement(sql);
    							ps.setString(1, password2);
    							ps.setString(2, cardID);
    							ps.executeUpdate();
    							System.out.println("密码修改成功");
    							s="密码修改成功";
    						}else { 
    							System.out.println("两次密码不相同，请重新输入");
    							s="两次密码不相同，请重新输入";
    						}
    					}
    				}else { 
    					System.out.println("修改失败，密码长度不可小于6位");
    					s="修改失败，密码长度不可小于6位";
    				}
    			}else { 
    				System.out.println("原密码错误，请重新输入");
    				s="原密码错误，请重新输入";
    			}
    		} catch (SQLException e) { 
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    		return s;
    	}
    	
    	//5.登陆
    	public String jlogin(String cardID,String password) { 
    		String newCardID="0";
    		String newPassword="0";
    		sql="select id,apassword from account where id=?;";
    		try { 
    			ps=con.prepareStatement(sql);
    			ps.setString(1, cardID);
    			ResultSet rs =ps.executeQuery();//向数据库发送数据查询语句
    				while(rs.next()) { 
    					newCardID= rs.getString("id"); 
    					newPassword=rs.getString("apassword");
    				}
    			if(cardID.equals(newCardID) && password.equals(newPassword)) { 
    				System.out.println("登陆成功");
    				s = "登陆成功";
    			    this.cardID=cardID;//使另一个类可以调用这个cardID
    				
    			}else { 
    				System.out.println("用户名或密码不正确,请重新输入");
    				s="用户名或密码不正确,请重新输入";
    			}
    		} catch (SQLException e) { 
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    		return s;
    	}
    	
    	public static void main(String[] args) { 
    		// TODO Auto-generated method stub
    		Basic_operation a = new Basic_operation();
    	}
    
    }

**3.登陆页面**(程序必须在此页开始运行)  
*这个账号输入有缺陷，只能输入8位的数字账号，第9位会自动进入到密码输入的那一行（我的知识有限，只能这么做了），要是账号是其他位数的，只能修改代码了*  
用了3个面板，  
![登陆页面][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2MjM0MjA5_size_16_color_FFFFFF_t_70_pic_center]

package ATM;
    //此页是登陆界面
    import java.awt.Color;
    import java.awt.Font;
    import java.awt.GridLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.util.Date;
    
    import javax.swing.BorderFactory;
    import javax.swing.Box;
    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.JScrollPane;
    import javax.swing.JTextArea;
    import javax.swing.JTextField;
    
    //登陆界面设置三个画板，一个用来放置账户和密码文本框，另一个用来放置数字键盘，另一个用来放置文本域
    public class OpenLogin extends JFrame implements ActionListener{ 
    	Basic_operation basi = new Basic_operation();//调用Basic_operation类中写好的方法
    	JFrame frame;
    	JPanel p,p2,p3;//三个画板
    	//panel面板中内容
    	JTextField jtext = new JTextField(20);//文本框
    	JPasswordField jpass = new JPasswordField(20);//密码框
    	JButton b=new JButton("登陆");
    	JButton b2=new JButton("退出");
    	//panel2面板中内容
    	JButton bt[] =new JButton[14];
    	//panel3面板中内容
    	JTextArea jtarea = new JTextArea(" 欢迎来到建设银行！ ",6,40);//文本域
    	
    	public OpenLogin() { 
    		open_login();
    	}
    	
    	public void open_login() { 
    		frame = new JFrame();
    		setTitle("ATM登陆界面");
    		
    		//盒式布局
    		Box boxHP = Box.createHorizontalBox();
    		Box boxHP2 = Box.createHorizontalBox();
    		Box boxVP = Box.createVerticalBox();
    		//1.创建一个JPanel对象，里面存放一个JTextField和JPasswordField组件
    			p = new JPanel(new GridLayout(5,3,0,15));
    			init();
    		//2.创建一个panel对象p2，并且设置它的布局管理器为GridLayout
    			p2 = new JPanel();
    			init2();
    		//向panel3面板中添加文本域 
    			p3 = new JPanel(new GridLayout(1,1,10,10));
    			init3();
    		//3.把panel和panel2添加到frame中
    			boxHP.add(p);
    			boxHP.add(p2);
    			boxHP2.add(p3);
    			boxVP.add(boxHP);
    			boxVP.add(boxHP2);
    			add(boxVP);
    
    		//设置windowListener,监听用户点击x的动作，若点击x，则关闭窗口
    			setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    		//设置最佳大小，pack方法
    		//pack()使setBounds(x, y, width, height);失灵
    			pack();
    			setVisible(true);//设置可见
    	}
    
    	void init() { 
    		Box boxH,boxH2;//水平
    		boxH = Box.createHorizontalBox();
    		boxH2 = Box.createHorizontalBox();
    		
    		boxH.add(new JLabel("账号:"));
    		boxH.add(jtext);
    		boxH2.add(new JLabel("密码:"));
    		boxH2.add(jpass);
    		
    		p.setBorder(BorderFactory.createTitledBorder("登陆区域:"));
    		p.add(new JLabel("请在确定周围环境安全的前提下操作:"));
    		p.add(boxH);
    		p.add(boxH2);
    		p.add(b);
    		p.add(b2);
    	}
    	
    	void init2() { 
    		p2.setBorder(BorderFactory.createTitledBorder("数字键盘:")); 
    		p2.setLayout(new GridLayout(4,3,7,7));//4行3列
    		//4.往panel2中添加内容
    		for(int i=1;i<13;i++) { 
    			 String jbutton=String.valueOf(i);
    			 bt[i]=new JButton(jbutton);
    			 if(i==10||i==11||i==12) { 
    				if(i==10) { 
    					p2.add(bt[i]);
    					bt[i].setText("更正");
    					bt[i].setBackground(Color.ORANGE);//设置按钮的背景颜色为橙色
    				}
    				if(i==11) { 
    					p2.add(bt[i]);
    					bt[i].setText("0");
    				}
    				if(i==12) { 
    					p2.add(bt[i]);
    					bt[i].setText("退格");
    					bt[i].setForeground(Color.red);
    				}
    			}else{ 
    					p2.add(bt[i]);
    			}
    		 }
    	}
    	void init3() { 
    		p3.setBorder(BorderFactory.createTitledBorder("提示信息:")); 
    		jtarea.setForeground(Color.blue);
    		jtarea.setFont(new Font("宋体",Font.BOLD,20));
    		//jtarea.setAlignmentX(CENTER_ALIGNMENT);
    		jtarea.setEditable(false);//使文本域不可被操作
    		jtarea.setLineWrap(true);//一行的内容大于文本框的长度就自动换行
    		p3.add(new JScrollPane(jtarea));//添加带滚动条的文本框
    		
    		//调用监听的方法
    		setMyCommandListener();
    	}
    	
    	public void setMyCommandListener() { 
    		//注册监听
    		b.addActionListener(this);//登陆按钮
    		b2.addActionListener(this);//退出按钮
    		for(int i=1;i<13;i++) { 
    			bt[i].addActionListener(this);
    		}
    	}
    
    		@Override
    		public void actionPerformed(ActionEvent e) { 
    			String s="";
    			String s2="";
    			String mi="";
    			String com="";
    			com = e.getActionCommand();
    			//日期
    			Date date=new Date();
    			String ktime=String.format("%tY年%<tm月%<td日%<ta%<tI:%<tM:%<tS:",date);
    			
    			if(jtext.getText().length()!=8) { 
    				for(int i=0;i<=9;i++) { 
    					String num = String.valueOf(i);
    					if(com.equals(num)) { 
    						s2=jtext.getText()+com;
    						jtext.setText(s2); 
    					}
    				}
    				if(com.equals("退格")) { 
    					s2=jtext.getText();
    		            if(s2.length()>0)
    		            	jtext.setText(s2.substring(0,s2.length()-1));
    				}
    				if(com.equals("更正")) { 
    					s2="";
    					jtext.setText(s2);
    				}
    				jtext.requestFocus();//使光标一直保持在文本框中
    			}else{ 
    				for(int i=0;i<=9;i++) { 
    					String num = String.valueOf(i);
    					if(com.equals(num)) { 
    						mi=jpass.getText()+com;
    						jpass.setText(mi);
    					}
    				}
    				if(com.equals("退格")) { 
    					mi=jpass.getText();
    		            if(mi.length()>0)
    		            	jpass.setText(mi.substring(0,mi.length()-1));
    		            else { 
    		            	s=jtext.getText();
    			            if(s.length()>0)
    			                jtext.setText(s.substring(0,s.length()-1));
    		            }
    				}
    				if(com.equals("更正")) { 
    					mi="";
    					jpass.setText(mi);
    				}	
    				jpass.requestFocus();//使光标一直保持在密码框之中
    			}
    			if(com.equals("登陆")) { 
    				s=basi.jlogin(jtext.getText(),jpass.getText());
    				if(s.equals("登陆成功")) { 
    					jtarea.append("\n"+ktime+s);
    					//打开另一个页面并关闭当前页面
    					new All();
    					dispose();
    				}else { 
    					jtarea.append("\n"+ktime+"登陆失败");
    					JOptionPane.showMessageDialog(b,"用户名或密码不正确,请重新输入","消息提示框",JOptionPane.WARNING_MESSAGE);
    				}
    			}
    			if(e.getSource()==b2){ 
    				//点击退出按钮，则关闭页面
    				dispose();
    			}
    		}		
    	
    	public static void main(String[] args) { 
    		OpenLogin alogin = new OpenLogin();
    	}
    }

**4.功能选择页面**  
*此页面的返回会回到登陆页面*  
用了两个面板，两行文字是一个，底下的按钮是另一个  
![功能选择页面][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2MjM0MjA5_size_16_color_FFFFFF_t_70_pic_center 1]

package ATM;
    //这个页面是综合页面
    import java.awt.Color;
    import java.awt.FlowLayout;
    import java.awt.Font;
    import java.awt.GridLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.sql.SQLException;
    
    import javax.swing.Box;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JTextArea;
    
    public class All extends JFrame implements ActionListener{ 
    	Basic_operation basi2 = new Basic_operation();//调用Basic_operation类中写好的方法
    	JFrame jframe = new JFrame();
    	JPanel p,p2;
    	//****************功能页面*************************
    	JLabel jn_labal;
    	JLabel jn_labal2;
    	JButton jn_deposit = new JButton("存款deposit");//存款
    	JButton jn_cash = new JButton("取款cash");//取款
    	JButton jn_pin = new JButton("改密pin ");//改密
    	JButton jn_exit = new JButton("取卡exit");//退出
    	
    	JTextArea jarea2 = new JTextArea();
    	
    	public All() { 
    		try { 
    			String s = basi2.select(basi2.cardID);
    			jarea2.append("\n"+"\n"+"\t"+"\t"+s+"\t"+"\t"+"\n"+"\n");
    			jall();
    		} catch (SQLException e) { 
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    	}
    	
    	public void jall(){ 
    	//p是功能页面
    		p = new JPanel();
    		jnjt();
    	//p2是查询界面
    		p2 = new JPanel();
    		jnjt2();
    
    		Box BoxV = Box.createVerticalBox();
    		BoxV.add(p);
    		BoxV.add(p2);
    		
    		add(BoxV);
    		
    		//注册监听
    		jn_deposit.addActionListener(this);
    		jn_cash.addActionListener(this);
    		jn_pin.addActionListener(this);
    		jn_exit.addActionListener(this);
    		
    	//设置windowListener,监听用户点击x的动作，若点击x，则关闭窗口
    		setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    	//设置最佳大小，pack方法
    		pack();
    		setVisible(true);//设置可见
    	}
    	
    	public void jnjt() { 
    		p.setLayout(new GridLayout(2,1));//2行1列
    		setTitle("功能选择界面");
    		setLayout(new FlowLayout());//设置流式布局
    		jn_labal = new JLabel(" 请选择服务类型");
    		jn_labal2 = new JLabel("建设银行");
    		jn_labal2.setFont(new Font("宋体",Font.BOLD,30));
    		jn_labal.setForeground(new Color(30, 144, 255));
    		jn_labal.setFont(new Font("宋体",Font.BOLD,20));
    		jn_labal2.setForeground(new Color(0, 255,255));
    		p.add(jn_labal2);
    		p.add(jn_labal);
    		
    	}
    	private void jnjt2() { 
    		// TODO Auto-generated method stub
    		p2.setLayout(new GridLayout(3,3));//4行3列
    		
    		//布局
    		Box boxH,boxH2,boxH3;//水平
    		boxH = Box.createHorizontalBox();
    		boxH2 = Box.createHorizontalBox();
    		boxH3 = Box.createHorizontalBox();
    		
    		boxH.add(jn_cash);
    		boxH.add(Box.createHorizontalStrut(260));
    		boxH.add(jn_deposit);
    		//设置文本域的属性
    		jarea2.setForeground(new Color(255, 255, 255));
    		jarea2.setBackground(new Color(30, 144, 255));
    		jarea2.setFont(new Font("宋体",Font.BOLD,15));
    		jarea2.setEditable(false);//使文本域不可被操作
    		boxH2.add(jarea2);
    		boxH3.add(jn_exit);
    		boxH3.add(Box.createHorizontalStrut(260));
    		boxH3.add(jn_pin);
    		jn_exit.setBackground(new Color(227, 23, 13));//设置按钮的背景颜色为红色
    		p2.add(boxH);
    		p2.add(boxH2);
    		p2.add(boxH3);
    	}
    	
    	@Override
    	public void actionPerformed(ActionEvent e) { 
    		// TODO Auto-generated method stub
    		if(e.getSource()==jn_cash) { 
    			new Cash();//打开取款页面
    			dispose();
    		}
    		if(e.getSource()==jn_deposit) { 
    			new Deposit();//打开存款页面
    			dispose();
    		}
    		if(e.getSource()==jn_pin) { 
    			new Pin();//打开改密类
    			dispose();
    		}
    		if(e.getSource()==jn_exit) { 
    			new OpenLogin();//退卡之后打开登陆类
    			dispose();
    		}
    	}
    	
    	public static void main(String[] args) { 
    		// TODO Auto-generated method stub
    		All a = new All();
    	}
    }

**5.取款页面**(可以在文本框内输入自定义的金额)  
*此页面的返回会回到功能选择页面*  
![取款页面][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2MjM0MjA5_size_16_color_FFFFFF_t_70_pic_center 2]

package ATM;
    //这个是取款页面
    import java.awt.BorderLayout;
    import java.awt.Font;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.Box;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JOptionPane;
    import javax.swing.JPanel;
    import javax.swing.JTextField;
    
    public class Cash extends JFrame implements ActionListener{ 
    	Basic_operation basi2 = new Basic_operation();//调用Basic_operation类中写好的方法
    	JFrame jframe = new JFrame();
    	JPanel jp = new JPanel();
    	JLabel lable = new JLabel(" 请输入取款金额");
    	JTextField textf = new JTextField();//文本框
    	JButton button = new JButton("返回 ");
    	JButton button2 = new JButton("100元 ");
    	JButton button3 = new JButton("500元 ");
    	JButton button4 = new JButton("1000元");
    	JButton button5 = new JButton("3000元");
    	JButton button6 = new JButton("5000元");
    	JButton button7 = new JButton("更正 ");
    	JButton button8 = new JButton("确认 ");
    	public Cash() { 
    		//构造方法
    		setTitle("取款界面");
    		//******************************************************
    		//为页面布局
    		jp_one();
    		add(jp);
    		//******************************************************
    		//设置windowListener,监听用户点击x的动作，若点击x，则关闭窗口
    		    setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    		//设置最佳大小，pack方法
    		    pack();
    			setVisible(true);//设置可见
    	}
    	public void jp_one() { 
    		// TODO Auto-generated method stub
    		jp.setLayout(new BorderLayout());
    		lable.setFont(new Font("宋体",Font.BOLD,20));
    		textf.setBounds(150, 50, 110, 40);
    		add(textf);
    		//以下是按钮
    		Box BoxV = Box.createVerticalBox(); 
    		
    		Box BoxH = Box.createHorizontalBox();
    		BoxH.add(Box.createVerticalStrut(50));
    		Box BoxH2 = Box.createHorizontalBox();
    		BoxH2.add(Box.createVerticalStrut(50));
    		Box BoxH3 = Box.createHorizontalBox();
    		BoxH3.add(Box.createVerticalStrut(50));
    		Box BoxH4 = Box.createHorizontalBox();
    		BoxH4.add(Box.createVerticalStrut(50));
    		
    		BoxH.add(button);
    		BoxH.add(Box.createHorizontalStrut(260));
    		BoxH.add(button5);
    		
    		BoxH2.add(button2);
    		BoxH2.add(Box.createHorizontalStrut(260));
    		BoxH2.add(button6);
    		
    		BoxH3.add(button3);
    		BoxH3.add(Box.createHorizontalStrut(260));
    		BoxH3.add(button7);
    		
    		BoxH4.add(button4);
    		BoxH4.add(Box.createHorizontalStrut(260));
    		BoxH4.add(button8);
    
    		BoxV.add(BoxH);
    		BoxV.add(BoxH2);
    		BoxV.add(BoxH3);
    		BoxV.add(BoxH4);
    		jp.add(lable,BorderLayout.NORTH);
    		jp.add(BoxV);
    		
    		//注册监听
    		button.addActionListener(this);
    		button2.addActionListener(this);
    		button3.addActionListener(this);
    		button4.addActionListener(this);
    		button5.addActionListener(this);
    		button6.addActionListener(this);
    		button7.addActionListener(this);
    		button8.addActionListener(this);
    	}
    	@Override
    	public void actionPerformed(ActionEvent e) { 
    		// TODO Auto-generated method stub
    		String number = textf.getText();
    		if(e.getSource()==button) { 
    			new All();
    			dispose();
    		}
    		if(e.getSource()==button2) { 
    			textf.setText("100");
    			//basi2.Withdrawal(basi2.cardID, "100");
    		}
    		if(e.getSource()==button3) { 
    			textf.setText("500");
    			//basi2.Withdrawal(basi2.cardID, "100");
    		}
    		if(e.getSource()==button4) { 
    			textf.setText("1000");
    			//basi2.Withdrawal(basi2.cardID, "100");
    		}
    		if(e.getSource()==button5) { 
    			textf.setText("3000");
    			//basi2.Withdrawal(basi2.cardID, "100");
    		}
    		if(e.getSource()==button6) { 
    			textf.setText("5000");
    			//basi2.Withdrawal(basi2.cardID, "100");
    		}
    		if(e.getSource()==button7) { 
    			//更正
    			textf.setText("");
    		}
    		if(e.getSource()==button8) { 
    			String s = basi2.Withdrawal(basi2.cardID, number);
    			JOptionPane.showMessageDialog(button8,s,"消息提示框",JOptionPane.WARNING_MESSAGE);
    		}
    	}
    	
    	public static void main(String[] args) { 
    		// TODO Auto-generated method stub
    		Cash a = new Cash();
    	}
    }

**6.存款页面**(和取款代码页面基本相同，有点细小的差异)  
*此页面的返回会回到功能选择页面*  
![存款页面][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2MjM0MjA5_size_16_color_FFFFFF_t_70_pic_center 3]

package ATM;
    //这个是存款页面
    import java.awt.BorderLayout;
    import java.awt.Font;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.Box;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JOptionPane;
    import javax.swing.JPanel;
    import javax.swing.JTextField;
    
    public class Deposit extends JFrame implements ActionListener{ 
    	Basic_operation basi2 = new Basic_operation();//调用Basic_operation类中写好的方法
    	JFrame jframe = new JFrame();
    	JPanel jp = new JPanel();
    	JLabel lable = new JLabel(" 请输入存款金额");
    	JTextField textf = new JTextField();//文本框
    	JButton button = new JButton("返回 ");
    	JButton button2 = new JButton("100元 ");
    	JButton button3 = new JButton("500元 ");
    	JButton button4 = new JButton("1000元");
    	JButton button5 = new JButton("3000元");
    	JButton button6 = new JButton("5000元");
    	JButton button7 = new JButton("更正 ");
    	JButton button8 = new JButton("确认 ");
    	public Deposit() { 
    		//构造方法
    		setTitle("存款界面");
    		//******************************************************
    		//为页面布局
    		jp_one();
    		add(jp);
    		//******************************************************
    		//设置windowListener,监听用户点击x的动作，若点击x，则关闭窗口
    		    setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    		//设置最佳大小，pack方法
    		    pack();
    			setVisible(true);//设置可见
    	}
    	public void jp_one() { 
    		// TODO Auto-generated method stub
    		jp.setLayout(new BorderLayout());
    		lable.setFont(new Font("宋体",Font.BOLD,20));
    		textf.setBounds(150, 50, 110, 40);
    		add(textf);
    		//以下是按钮
    		Box BoxV = Box.createVerticalBox(); 
    		
    		Box BoxH = Box.createHorizontalBox();
    		BoxH.add(Box.createVerticalStrut(50));
    		Box BoxH2 = Box.createHorizontalBox();
    		BoxH2.add(Box.createVerticalStrut(50));
    		Box BoxH3 = Box.createHorizontalBox();
    		BoxH3.add(Box.createVerticalStrut(50));
    		Box BoxH4 = Box.createHorizontalBox();
    		BoxH4.add(Box.createVerticalStrut(50));
    		
    		BoxH.add(button);
    		BoxH.add(Box.createHorizontalStrut(260));
    		BoxH.add(button5);
    		
    		BoxH2.add(button2);
    		BoxH2.add(Box.createHorizontalStrut(260));
    		BoxH2.add(button6);
    		
    		BoxH3.add(button3);
    		BoxH3.add(Box.createHorizontalStrut(260));
    		BoxH3.add(button7);
    		
    		BoxH4.add(button4);
    		BoxH4.add(Box.createHorizontalStrut(260));
    		BoxH4.add(button8);
    
    		BoxV.add(BoxH);
    		BoxV.add(BoxH2);
    		BoxV.add(BoxH3);
    		BoxV.add(BoxH4);
    		jp.add(lable,BorderLayout.NORTH);
    		jp.add(BoxV);
    		
    		//注册监听
    		button.addActionListener(this);
    		button2.addActionListener(this);
    		button3.addActionListener(this);
    		button4.addActionListener(this);
    		button5.addActionListener(this);
    		button6.addActionListener(this);
    		button7.addActionListener(this);
    		button8.addActionListener(this);
    	}
    	@Override
    	public void actionPerformed(ActionEvent e) { 
    		// TODO Auto-generated method stub
    		String number = textf.getText();
    		if(e.getSource()==button) { 
    			new All();
    			dispose();
    		}
    		if(e.getSource()==button2) { 
    			textf.setText("100");
    			//basi2.Withdrawal(basi2.cardID, "100");
    		}
    		if(e.getSource()==button3) { 
    			textf.setText("500");
    			//basi2.Withdrawal(basi2.cardID, "100");
    		}
    		if(e.getSource()==button4) { 
    			textf.setText("1000");
    			//basi2.Withdrawal(basi2.cardID, "100");
    		}
    		if(e.getSource()==button5) { 
    			textf.setText("3000");
    			//basi2.Withdrawal(basi2.cardID, "100");
    		}
    		if(e.getSource()==button6) { 
    			textf.setText("5000");
    			//basi2.Withdrawal(basi2.cardID, "100");
    		}
    		if(e.getSource()==button7) { 
    			//更正
    			textf.setText("");
    		}
    		if(e.getSource()==button8) { 
    			String s = basi2.deposit(basi2.cardID, number);
    			JOptionPane.showMessageDialog(button8,s,"消息提示框",JOptionPane.WARNING_MESSAGE);
    		}
    	}
    	
    	public static void main(String[] args) { 
    		// TODO Auto-generated method stub
    		Deposit a = new Deposit();
    	}
    }

**7.修改密码页面**  
*此页面的返回会回到功能选择页面*  
![修改密码页面][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2MjM0MjA5_size_16_color_FFFFFF_t_70_pic_center 4]

package ATM;
    
    import java.awt.Color;
    import java.awt.Font;
    import java.awt.GridLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    
    import javax.swing.Box;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JOptionPane;
    import javax.swing.JPanel;
    import javax.swing.JTextField;
    
    //修改密码页面
    public class Pin extends JFrame implements ActionListener{ 
    	Basic_operation basi2 = new Basic_operation();//调用Basic_operation类中写好的方法
    	JFrame jframe = new JFrame();
    	JPanel p = new JPanel();
    	JLabel title = new JLabel("请在确定周围环境安全的前提下操作:");
    	JLabel label = new JLabel(" 请输入原密码 ");
    	JTextField text = new JTextField();
    	JLabel label2 = new JLabel(" 请输入新密码 ");
    	JTextField text2 = new JTextField();
    	JLabel label3 = new JLabel("再次输入新密码");
    	JTextField text3 = new JTextField();
    	JButton button = new JButton("返回");
    	JButton button2 = new JButton("确认"); 
    	public Pin() { 
    		setTitle("修改密码页面");
    		p.setBackground(new Color(30, 144, 255));
    		//调用方法
    		p_in();
    		add(p);
    		//设置windowListener,监听用户点击x的动作，若点击x，则关闭窗口
    	    setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    	    //设置最佳大小，pack方法
    	    pack();
    	    setVisible(true);//设置可见
    	}
    	
    	private void p_in() { 
    		// TODO Auto-generated method stub
    		p.setLayout(new GridLayout(6, 1, 0, 15));
    		title.setFont(new Font("宋体",Font.BOLD,15));
    		Box boxH,boxH2,boxH3,boxH4;//水平
    		boxH = Box.createHorizontalBox();
    		boxH2 = Box.createHorizontalBox();
    		boxH3 = Box.createHorizontalBox();
    		boxH4 = Box.createHorizontalBox();
    		boxH.add(label);
    		boxH.add(text);
    		boxH2.add(label2);
    		boxH2.add(text2);
    		boxH3.add(label3);
    		boxH3.add(text3);
    		boxH4.add(Box.createHorizontalStrut(80));
    		boxH4.add(button);
    		boxH4.add(Box.createHorizontalStrut(100));
    		boxH4.add(button2);
    		boxH4.add(Box.createHorizontalStrut(80));
    		p.add(title);
    		p.add(boxH);
    		p.add(boxH2);
    		p.add(boxH3);
    		p.add(boxH4);
    		//添加监听
    		button.addActionListener(this);
    		button2.addActionListener(this);
    	}
    
    	@Override
    	public void actionPerformed(ActionEvent e) { 
    		// TODO Auto-generated method stub
    		if(e.getSource()==button) { 
    			new All();
    			dispose();
    		}
    		if(e.getSource()==button2) { 
    			String s = basi2.changePassword(basi2.cardID, text.getText(), text2.getText(), text3.getText());
    			JOptionPane.showMessageDialog(button2,s,"消息提示框",JOptionPane.WARNING_MESSAGE);
    		}
    	}
    	
    	public static void main(String[] args) { 
    		// TODO Auto-generated method stub
    		Pin a = new Pin();
    	}
    
    }

**注：以上类都需要在java软件中运行，我将数据库代码放在下面，数据库代码要在MySql中运行**  
*开放权限是非常重要的一步*

create database atmBankDatabase;
    use atmBankDatabase;
    create table account(
    	id varchar(20) not null default '62250028' primary key,/*卡号*/
        aname varchar(15) not null,
        apassword varchar(15) not null default '123456',
        balance double not null default '10000'/*余额*/
    )engine=InnoDB default charset=utf8;
    
    /*将指导书中的用户添加到表中*/
    insert into account values('62250028','张三','123456','10000');
    insert into account values('62250027','李四','123456','10000');
    insert into account values('62250026','王五','123456','10000');
    
    grant all PRIVILEGES on *.* to root@'%' identified by '';/*开放root权限*/
    select * from account;

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2MjM0MjA5_size_16_color_FFFFFF_t_70_pic_center]: /images/20221119/0ebcefa2ada0414fac46818c1b03b16c.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2MjM0MjA5_size_16_color_FFFFFF_t_70_pic_center 1]: /images/20221119/652ac98c3980418886732759a01aaf3a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2MjM0MjA5_size_16_color_FFFFFF_t_70_pic_center 2]: /images/20221119/4673c29b950c4d97b65b0b79370d20e7.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2MjM0MjA5_size_16_color_FFFFFF_t_70_pic_center 3]: /images/20221119/ab0b16638f444ea3bdb9323829ad4211.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ2MjM0MjA5_size_16_color_FFFFFF_t_70_pic_center 4]: /images/20221119/6ccab67ecd094d23be7496068f8f4939.png