【0727作业】实现登录注册

傷城~ 2021-11-01 10:32 304阅读 0赞

**需求：**

**1、登录账号唯一，在注册时验证输入的账号是否可用，若已存在，则不可用，若不存在则可用**

**2、登录时使用账号密码进行验证**

1 package login;
     2 
     3 public class Login {
     4     private String accounts;//登录账户
     5     private String password;//登录密码
     6     private String phone;//手机号
     7     public String getPhone() {
     8         return phone;
     9     }
    10     public void setPhone(String phone) {
    11         this.phone = phone;
    12     }
    13     public String getAccounts() {
    14         return accounts;
    15     }
    16     public void setAccounts(String accounts) {
    17         this.accounts = accounts;
    18     }
    19     public String getPassword() {
    20         return password;
    21     }
    22     public void setPassword(String password) {
    23         this.password = password;
    24     }
    25     
    26     public Login() {
    27         // TODO Auto-generated constructor stub
    28     
    29     }
    30     public Login(String accounts, String password, String phone) {
    31         super();
    32         this.accounts = accounts;
    33         this.password = password;
    34         this.phone = phone;
    35     }
    36     
    37 }

1 package login;
     2 
     3 import java.util.HashMap;
     4 import java.util.Scanner;
     5 import java.util.Set;
     6 
     7 8 
     9 public class LoginSystem {
    10     static Scanner sc = new Scanner(System.in);
    11 
    12     public static void main(String[] args) {
    13         // 初始化信息
    14         Login user1 = new Login("asd00000", "123456", "13900000000");
    15         Login user2 = new Login("qwe00000", "234567", "15900000000");
    16         Login user3 = new Login("zxc00000", "345678", "13800000000");
    17 
    18         HashMap<String, Login> map = new HashMap<>();
    19         map.put(user1.getAccounts(), user1);
    20         map.put(user2.getAccounts(), user2);
    21         map.put(user3.getAccounts(), user3);
    22 
    23         System.out.println("***欢迎进入系统大厅***");
    24         System.out.println("请选择：1、登录 2、注册、3、退出系统");
    25         String change = sc.next();
    26         switch (change) {
    27         case "1":
    28             System.out.print("请输入登录账户：");
    29             String account = sc.next();
    30             System.out.print("请输入登录密码：");
    31             String password = sc.next();
    32             // 判断验证登录信息（核查账户与密码匹配）
    33             if (map.containsKey(account) && map.get(account).getPassword().equals(password)) {
    34                 System.out.println("登录成功！!正在加载系统...");
    35             } else if (map.containsKey(account) && !map.get(account).getPassword().equals(password)) {
    36                 System.out.println("密码错误！已退出登录！");
    37             } else {
    38                 System.out.println("输入账户不正确！登录失败！");
    39             }
    40             break;
    41         case "2":
    42             System.out.println("请输入注册账户：");
    43             String addAccount = sc.next();
    44             if (map.containsKey(addAccount)) {
    45                 System.out.println("账户已存在，注册失败！");
    46                 break;
    47             } else {
    48                 System.out.println("请输入注册密码：");
    49                 String addPassword = sc.next();
    50                 System.out.println("请输入手机号码：");
    51                 String addPhone = sc.next();
    52                 System.out.println("注册成功！");
    53                 System.out.println("您的登录账户为：" + addAccount + "，登录密码为：" + addPassword + ",预留手机号为：" + addPhone);
    54             }
    55             break;
    56         default:
    57             System.out.println("成功退出登录系统！");
    58         }
    59     }
    60 
    61 }

转载于:https://www.cnblogs.com/yanglanlan/p/11261095.html