超市收银系统项目

效果显示：

controller

public class Supermarket {
   static Scanner sc = new Scanner(System.in);

   public static void main(String[] args) {
        System.out.println("*********欢迎使用超市收银系统********");
        System.out.println("1.会员登录\t2.员工登录\t0.退出系统");
        System.out.println("请选择登录：");
        LoginServiceImpl loginServiceImpl = new LoginServiceImpl();
        String number;
        String password;
        switch (count(sc)) {
            case 1:
                System.out.println("请输入账号：");
                number = sc.next();
                System.out.println("请输入11位手机号码：");
                password = IsPhoneNumber.isPhoneNumber(sc.next());
                number=loginServiceImpl.vipLogin(number, password);
                new PageServiceImpl().vipPage(number);
                break;
            case 2:
                System.out.println("请输入账号：");
                number = sc.next();
                System.out.println("请输入密码：");
                password = sc.next();
                Employee employee = loginServiceImpl.employeeLogin(number, password);
                employeeSelect(employee);
                break;
            case 0:
                System.out.println("欢迎再次使用!");
                System.exit(0);
            default:
                System.out.println("输入有误,返回主界面");
                main(null);
        }
        
    }
   
    public static int count(Scanner sc) {//防止键盘输入错误

        int i;
        while (true) {
            String s = sc.next();
            if (s.length() > 1) {
                System.out.println("输入有误,返回主界面");
                main(null);
            } else if (s.charAt(0) >= 48 && s.charAt(0) <= 51) {
                i = Integer.parseInt(s);
                break;
            } else {
                System.out.println("输入有误,返回主界面");
               main(null); 
            }
        }
      return i;
    }
    
  //判断员工种类
    public static void employeeSelect(Employee employee){
        PageServiceImpl psi = new PageServiceImpl();
        if (employee.getRole()==1){
           psi.adminPage(employee.getNumber());
        }else if (employee.getRole()==2){
           psi.cashierPage(employee.getNumber());
        }else if (employee.getRole()==3){
           psi.buyerPage(employee.getNumber());
        }
    }
}

gitee地址： 

Supermarket-Project: 超市收银系统,包括会员登录和员工登录。员工分为管理员,收银员和管理员。每一位角色都有相应的权限。 (gitee.com)