学生管理系统

学生管理系统:增删改查

Main.java

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import java.util.ArrayList;
import java.util.Scanner;

public class Main {
    static int choiceAdmin;
    static Scanner sc = new Scanner(System.in);
    static ArrayList<User> arrayListUser = new ArrayList<>();
    static ArrayList<Student> arrayListStudent = new ArrayList<>();

    public static void main(String[] args) {
        while (true) {
            interfaceMain();
        }
    }

    public static void interfaceMain() {
        System.out.println("-------------欢迎来到学生管理系统----------------");
        System.out.println("请选择你的身份");
        System.out.println("1.学生");
        System.out.println("2.管理员");
        System.out.println("请输入你的选择：");
        choiceAdmin = sc.nextInt();
        if (choiceAdmin == 1) {
            interfaceUser();
        } else if (choiceAdmin == 2) {
            interfaceUser();
        } else {
            System.out.println("输入错误，请重新输入");
        }
    }

    public static void interfaceStudent() {
        System.out.println("----------------------------------------------");
        System.out.println("请选择你的操作");
        System.out.println("1.查看个人信息");
        System.out.println("2.修改个人信息");
        System.out.println("3.退出");
        System.out.println("请输入你的选择：");
    }

    public static void interfaceAdmin() {
        System.out.println("----------------------------------------------");
        System.out.println("请选择你的操作");
        System.out.println("1.查看学生信息");
        System.out.println("2.添加学生信息");
        System.out.println("3.修改学生信息");
        System.out.println("4.删除学生信息");
        System.out.println("5.查看所有信息");
        System.out.println("6.退出");
        System.out.println("请输入你的选择：");
    }

    public static void interfaceUser() {
        System.out.println("----------------------------------------------");
        System.out.println("请选择你的操作");
        System.out.println("1.登录");
        System.out.println("2.注册");
        System.out.println("3.忘记密码");
        System.out.println("4.退出");
        System.out.println("请输入你的选择：");
        int choice = sc.nextInt();
        switch (choice) {
            case 2:
                register();
                break;
        }
    }

    //注册
    public static boolean register() {
        User user = new User();
        //选择身份
            if (choiceAdmin == 1) {
                user.setCharacter(1);
            } else if (choiceAdmin == 2) {
                user.setCharacter(2);
            } else {
                System.out.println("输入错误，请重新输入");
            }
        //验证用户名
        String name;
        while (true) {
            System.out.println("请输入你的用户名:");
            name = sc.next();
            if (checkUserName(arrayListUser, name)) {
                break;
            } else {
                System.out.println("用户名不符合规范，请重新输入");
            }
        }
        user.setName(name);
        //验证密码
        String password1, password2;
        while (true) {
            System.out.println("请输入你的密码:");
            password1 = sc.nextLine();
            System.out.println("请再次输入你的密码:");
            password2 = sc.nextLine();
            if (password2.equals(password1)) {
                user.setPassword(password1);
                break;
            }
            System.out.println("两次密码不一致，请重新输入");
        }
        //验证身份证
        String identity_id;
        while (true) {
            System.out.println("请输入你的身份证号:");
            identity_id = sc.nextLine();
            if (checkIdentityId(identity_id)) {
                break;
            } else {
                System.out.println("身份证号不符合规范，请重新输入");
            }
        }
        user.setIdentity_id(identity_id);
        //验证手机号
        String phone;
        while (true) {
            System.out.println("请输入你的手机号:");
            phone = sc.nextLine();
            if (checkPhone(phone)) {
                break;
            }
            System.out.println("手机号不符合规范，请重新输入");
        }
        return true;
    }

    //验证注册的用户名
    public static boolean checkUserName(ArrayList<User> ListUser, String name) {
        if (name.length() < 3 || name.length() > 15) {
            return false;//用户名长度不符合
        }
        for (int i = 0; i < ListUser.size(); i++) {
            if (ListUser.get(i).getName().equals(name)) {
                return false;//用户名已存在
            }
        }
        for (int i = 0; i < name.length(); i++) {
            if (name.charAt(i) < '0' || name.charAt(i) > '9') {
                return false;//用户名包含非法字符
            }
        }
        return true;//用户名符合规范
    }

    //验证注册的身份证号
    public static boolean checkIdentityId(String identity_id) {
        if (identity_id.length() != 18) {
            return false;//身份证号长度不符合
        }
        if (identity_id.charAt(0) == 0) {
            return false;//身份证号首位为0
        }
        for (int i = 0; i < 17; i++) {
            if (identity_id.charAt(i) < '0' || identity_id.charAt(i) > '9') {
                return false;//身份证号包含非法字符
            }
        }
        if (identity_id.charAt(17) < '0' || identity_id.charAt(17) > '9' || identity_id.charAt(17) != 'X' || identity_id.charAt(17) != 'x') {
            return false;//身份证号最后一位不是数字
        }
        return true;//身份证号符合规范
    }

    //验证注册的手机号
    public static boolean checkPhone(String phone) {
        if (phone.length() != 11) {
            return false;//手机号长度不符合
        }
        if (phone.charAt(0) != '1') {
            return false;//手机号首位不是1
        }
        for (int i = 0; i < 11; i++) {
            if (phone.charAt(i) < '0' || phone.charAt(i) > '9') {
                return false;//手机号包含非法字符
            }
        }
        return true;//手机号符合规范
    }
}

Student.java

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public class Student {
    private String name;
    private char gender;
    private int age;
    private int id;

    public Student() {
    }

    public Student(String name, char gender, int age,int id) {
        this.name = name;
        this.gender = gender;
        this.age = age;
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public char getGender() {
        return gender;
    }

    public void setGender(char gender) {
        this.gender = gender;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }
}

User.java

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public class User {
    private String name;
    private String password;
    private int character;//1.学生 2.管理员
    private String identity_id;
    private String phone;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public int getCharacter() {
        return character;
    }

    public void setCharacter(int character) {
        this.character = character;
    }

    public User() {
    }

    public User(String name, String password, int character, String identity_id, String phone) {
        this.name = name;
        this.password = password;
        this.character = character;
        this.identity_id = identity_id;
        this.phone = phone;
    }

    public String getIdentity_id() {
        return identity_id;
    }

    public void setIdentity_id(String identity_id) {
        this.identity_id = identity_id;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }
}