图书馆里系统新增禁止用户登录和新增注释

图书馆里系统新增

用户禁止登录

在Users中增加检验字段

private String name;
private String password;
private Books books;
public static int setlogin=1;

通过管理员的命令将字段改为0

public static void Stopusers()
{
    System.out.println("您已经开启禁止用户登陆权限");
   Users.setlogin=0;
}

并在用户登录中增加检验代码

if(Users.setlogin==0)
{
    System.out.println("您已经被禁止登录 即可返回");
    Login();
}

给全文增加注释

package com.day01;

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

public class Booksystem {
    static ArrayList<Books> libraries = new ArrayList<Books>();//储存图书馆图书的集合
    static ArrayList<Books> Usersbooks = new ArrayList<Books>();//储存被借出去的书的集合
    static ArrayList<Users> UsersDatas=new ArrayList<Users>();//储存用户信息的集合
    public static void main(String[] args) {//开始界面 判断行为方式
        Circulate: while (true) {

            System.out.println("——————————欢迎来到懒洋洋的图书管理系统——————————");
            System.out.println("请选择：1.登录/注册");
            System.out.println("请选择：2.退出");
            Scanner scanner = new Scanner(System.in);
            String choice = scanner.nextLine();
            switch (choice) {
                case "1":
                         Login();//进入登录
                    break;
                case "2":
                    break Circulate;//立即推出
                default:
                    System.out.println("输入错误，请在输入一次");
            }
        }
    }
    public static void Login()//登录/注册方式
    {
        System.out.println("请选择1.管理员登录");
        System.out.println("请选择2.用户登录");
        System.out.println("请选择3.用户注册");
        Scanner scanner = new Scanner(System.in);
        String choice = scanner.nextLine();
        switch (choice) {
            case "1"-> BossLogin();//管理员登陆
            case "2"->UsersLogin(UsersDatas);//用户登录
            case"3"->Enroll();//注册
        }
    }
    public static void BossLogin() {//管理员登陆
        Boss boss = new Boss();
        while (true) {
            System.out.println("请输入管理员的用户名");
            Scanner scanner = new Scanner(System.in);
            String Bossname = scanner.nextLine();
            System.out.println("请输入管理员的密码");
            String password = scanner.nextLine();
            if (Bossname.equals(boss.getName()) && password.equals(boss.getPassword())) {
                System.out.println("欢迎您！亲爱的管理员");
                BossChoice();
                break;
            } else {
                System.out.println("您的用户名或密码输入错误，请在输入一次");
            }
        }
    }
    public static void UsersLogin(ArrayList<Users> UsersDatas)//用户登录
    {
        Users user = new Users();
        if(Users.setlogin==0)
        {
            System.out.println("您已经被禁止登录 即可返回");
            Login();
        }
       while (true) {
           int flag=1;
           System.out.println("请输入用户的用户名");
           Scanner scanner = new Scanner(System.in);
           String Usersname = scanner.nextLine();
           System.out.println("请输入用户的密码");
           String password = scanner.nextLine();
           for (int i = 0; i < UsersDatas.size(); i++) {
               if (Usersname.equals(UsersDatas.get(i).getName()) && password.equals(UsersDatas.get(i).getPassword())) {
                   System.out.println("恭喜您！登录成功");
                   flag=0;
                   user=UsersDatas.get(i);
                   UserChoice(user);
                   break;
               }
           }
        if (flag==1) {
            System.out.println("不好意思账号或密码错误，请在输入一次");
        }

       }
    }
    public static void Enroll() {//用户注册
        String answer="";
        do {
            System.out.println("欢迎来到用户注册页面");
            System.out.println("请输入您想要的用户名");
            Scanner scanner = new Scanner(System.in);
            String Username = scanner.nextLine();
            System.out.println("恭喜您！输入成功");
            System.out.println("请输入你想要的密码");
            String Password = scanner.nextLine();
            System.out.println("恭喜您输入成功！");
            System.out.println("您的账号是" + Username + ", " + "您的密码是" + Password);
            Users user = new Users();
            user.setName(Username);
            user.setPassword(Password);
            UsersDatas.add(user);
            System.out.println("您是否还需要注册y/n");
             answer = scanner.nextLine();
        }
        while (answer.equals("y"));
        Login();

    }
    public static void UserChoice(Users user)//用户的操作选项
    {
        System.out.println("亲爱的用户，请选择你的操作");
        System.out.println("1.查看图书馆里所有书");
        System.out.println("2.我要借书了！");
        System.out.println("3.我要还书了");
        System.out.println("4.我要对书进行评价");
        System.out.println("5.退出");
        Scanner scanner = new Scanner(System.in);
        String choice = scanner.nextLine();
        switch (choice) {
            case "1"->UserBookSawAll(libraries,user);//用户查看图书馆里所有的书
            case"2"->BorrowBook(libraries, Usersbooks,user);//用户借书
            case"3"->Returnbook(libraries, Usersbooks,user);//用户还书
            case"4"->Appraisebook();//用户评价书
            case"5"->Login();//用户退出
        }
    }
    public static void UserBookSawAll(ArrayList<Books> libraries, Users user)//用户查看图书馆里的所有书
    {
        for (int i = 0; i <libraries.size() ; i++) {
            System.out.println(libraries.get(i).getId()+" "+libraries.get(i).getName()+" "+libraries.get(i).getAuthor());
        }
        System.out.println("查看完毕 返回主页面");
        UserChoice(user);
    }
    public static void BorrowBook(ArrayList<Books> libraries,ArrayList<Books> Usersbooks, Users user )//用户借书
    {
        System.out.println("请输入你要所要借书的id");
        Scanner scanner = new Scanner(System.in);
       String Bookid = scanner.nextLine();
        for (int i = 0; i < libraries.size() ; i++) {
            if (libraries.get(i).getId().equals(Bookid)) {
                Usersbooks.add(libraries.get(i));
                user.setBooks(libraries.get(i));
                libraries.remove(i);

            }
        }
        System.out.println("恭喜你，借书完毕，即将返回主页面");
        UserChoice(user);
    }
    public static void Returnbook(ArrayList<Books> libraries,ArrayList<Books> Usersbooks, Users user )//用户还书
    {
        System.out.println("请输入你要所要还书的id");
        Scanner scanner = new Scanner(System.in);
        String id = scanner.nextLine();
        for (int i = 0; i < Usersbooks.size() ; i++) {
            if (Usersbooks.get(i).getId().equals(id)) {
                libraries.add(Usersbooks.get(i));
                user.setBooks(null);
                Usersbooks.remove(i);
            }
        }
        System.out.println("恭喜你，还书完毕，即将返回主页面");
        UserChoice(user);
    }
    public static void Appraisebook()//用户评价书
    {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要评价书的id");
        int id = scanner.nextInt();
        System.out.println("请输入对书的评论");
        String appraise=scanner.nextLine();
        System.out.println("我对"+libraries.get(id)+"的评价是"+appraise);

    }
    public static void BossChoice()//管理员的操作面板
    {
        System.out.println("亲爱的管理员，请选择你的操作");
        System.out.println("1.录入书籍");
        System.out.println("2.移除书籍");
        System.out.println("3.查看所有书籍");
        System.out.println("4.查看所有用户借的书");
        System.out.println("5.查看所有用户");
        System.out.println("6.禁止用户登录");
        System.out.println("7.退出登录并返回主界面");
        Scanner scanner = new Scanner(System.in);
        String choice = scanner.nextLine();
        switch (choice) {
            case "1"->BookInput();//录入书籍
            case"2"-> BookRemove(libraries);//移除书籍
            case "3"->BookSeeAll(libraries);//查看所有的书籍
            case"4"-> BossSawUser(Usersbooks);//查看用户借的所有的书
            case"5"->BossSeeAllUsersdate(UsersDatas);//查看用户的信息 如果借了书 显示用户名和借了的书
            case"6"->Stopusers();//禁止用户登录
            case"7"->Login();//退出
        }
    }
    public static void BookInput()//管理员插入书籍
    {
        String choose="";
        do {
            Books book = new Books();
            System.out.println("请输入这本书的id");
            Scanner scanner = new Scanner(System.in);
            String Bookid = scanner.nextLine();
            book.setId(Bookid);
            System.out.println("请输入这本书的名字");
            String Bookname = scanner.nextLine();
            book.setName(Bookname);
            System.out.println("请输入这本书的作者");
            String Bookauthor = scanner.nextLine();
            book.setAuthor(Bookauthor);
            libraries.add(book);
            System.out.println("添加成功");
            System.out.println("您是否还想添加书？");
            System.out.println("请输入y/n");
            choose = scanner.nextLine();
        }
        while (choose.equals("y"));
        BossChoice();

    }
    public static void BookRemove(ArrayList<Books> libraries) {//管理员移除书籍
        int flage=1;
        System.out.println("请输入你要删除书的id");
        Scanner scanner = new Scanner(System.in);
        String Bookid = scanner.nextLine();
        for (int i = 0; i < libraries.size(); i++) {
            if (libraries.get(i).getId().equals(Bookid)) {
                libraries.remove(i);
                System.out.println("恭喜你，删除成功");
                flage=0;
            }
        }
        if(flage==1)
        {
            System.out.println("您要删除的书不存在");
        }
        BossChoice();
    }
    public static void BookSeeAll(ArrayList<Books> libraries){//管理员查看所有的书
        for (int i = 0; i <libraries.size() ; i++) {
            System.out.println(libraries.get(i).getId()+" "+libraries.get(i).getName()+" "+libraries.get(i).getAuthor());
        }
        BossChoice();
    }
    public static void BossSawUser(ArrayList<Books> Usersbooks)//管理员查看所有被借了的书
    {
        for (int i = 0; i < Usersbooks.size() ; i++) {
            System.out.println(Usersbooks.get(i).getId()+" "+Usersbooks.get(i).getName()+" "+Usersbooks.get(i).getAuthor());
        }
        BossChoice();
    }
    public static void BossSeeAllUsersdate(ArrayList<Users> UsersDatas)//管理员查看用户的信息 如果借了书 显示被借的书
    {
        for (int i = 0; i< UsersDatas.size() ; i++) {
            System.out.println(UsersDatas.get(i).getName());
            if(UsersDatas.get(i).getBooks()!=null)
            {
                System.out.println("该用户借了"+UsersDatas.get(i).getBooks().getName());
            }
        }
        BossChoice();
    }
    public static void Stopusers()//禁止用户登录
    {
        System.out.println("您已经开启禁止用户登陆权限");
       Users.setlogin=0;
    }
}