Java图书管理系统实现-蒲公英云

今天来实现了一下Java的小项目：图书管理系统

文件：

在这里插入图片描述

代码部分：

Book:

package bookManagement.Book;
public class Book {
    private String name;
    private String author;
    private double price;
    private String type;
    private boolean isBorrowed;
    public Book(String name, String author, double price, String type) {
        this.name = name;
        this.author = author;
        this.price = price;
        this.type = type;
        this.isBorrowed = false;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAuthor() {
        return author;
    }
    public void setAuthor(String author) {
        this.author = author;
    }
    public double getPrice() {
        return price;
    }
    public void setPrice(double price) {
        this.price = price;
    }
    public String getType() {
        return type;
    }
    public void setType(String type) {
        this.type = type;
    }
    public boolean isBorrowed() {
        return isBorrowed;
    }
    public void setBorrowed(boolean borrowed) {
        isBorrowed = borrowed;
    }
    @Override
    public String toString() {
        return "Book{" +
                "name='" + name + '\'' +
                ", author='" + author + '\'' +
                ", price=" + price +
                ", type='" + type + '\'' +
                ", isBorrowed=" + isBorrowed +
                '}';
    }
}

bookList:

package bookManagement.Book;
import java.util.Iterator;
import java.util.LinkedList;
public class bookList {
    public static final LinkedList<Book> booksList = new LinkedList<>();
    public static final LinkedList<String> booksName = new LinkedList<>();
    static {
        booksList.add(new Book("水浒传", "施耐庵", 85.5, "小说"));
        booksList.add(new Book("三国演义", "罗贯中", 120.6, "小说"));
        booksList.add(new Book("红楼梦", "曹雪芹", 99.9, "小说"));
        booksList.add(new Book("西游记", "吴承恩", 66.6, "小说"));
        booksName.add("水浒传");
        booksName.add("三国演义");
        booksName.add("红楼梦");
        booksName.add("西游记");
    }
    public void addBook(Book book) {
        if (booksName.contains(book.getName())) {
            System.out.println("该书目已存在！");
            return;
        }
        booksList.add(book);
        booksName.add(book.getName());
    }
    public Book findBook(String bookName) {
        if (booksName.contains(bookName)) {
            Iterator<Book> iterator = booksList.iterator();
            while (iterator.hasNext()) {
                Book book = iterator.next();
                if (book.getName().equals(bookName)) {
                    return book;
                }
            }
        } else {
            System.out.println("书架上没有该书目！");
        }
        return null;
    }
    public void deleteBook(String bookName) {
        if (booksName.contains(bookName)) {
            Iterator<Book> iterator = booksList.iterator();
            while (iterator.hasNext()) {
                Book book = iterator.next();
                if (book.getName().equals(bookName)) {
                    booksList.remove(book);
                    booksName.remove(bookName);
                    System.out.println("删除成功！");
                    return;
                }
            }
        } else {
            System.out.println("删除失败！书架上没有该书目！");
        }
    }
    public void showBooks() {
        Iterator<Book> iterator = booksList.iterator();
        while (iterator.hasNext()) {
            Book book = iterator.next();
            System.out.println(book);
        }
    }
    public void borrowBook(String bookName) {
        Book book = findBook(bookName);
        if (booksName.contains(bookName)) {
            if (book.isBorrowed()) {
                System.out.println("该书已被借出！");
            } else {
                System.out.println("借书成功！！！");
                book.setBorrowed(true);
            }
        } else {
            System.out.println("借阅失败！书架上没有该书目！");
        }
    }
    public void returnBook(String bookName) {
        Book book = findBook(bookName);
        if (book == null) {
            System.out.println("书架上没有该书");
        } else if (booksName.contains(bookName) && book.isBorrowed()) {
            System.out.println("还书成功！！！");
            book.setBorrowed(false);
        }
    }
    public void updateBook(String bookName, double price, String type) {
        Book book = findBook(bookName);
        if (book == null) {
            System.out.println("书架上没有该书！");
        } else {
            book.setPrice(price);
            book.setType(type);
            System.out.println("更新成功！");
        }
    }
}

Operation:

package bookManagement.Operation;
import bookManagement.Book.bookList;
public interface Operation {
    void operation(bookList booklist);
}

add:

package bookManagement.Operation;
import bookManagement.Book.Book;
import bookManagement.Book.bookList;
import java.util.Scanner;
public class addOperation implements Operation {
    @Override
    public void operation(bookList booklist) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入你需要添加的书的名称：");
        String name = sc.nextLine();
        System.out.println("请输入该书的作者：");
        String author = sc.nextLine();
        System.out.println("请输入该书的价格：");
        double price = sc.nextDouble();
        System.out.println("请输入该书的类型：");
        String type = sc.nextLine();
        Book book = new Book(name, author, price, type);
        booklist.addBook(book);
    }
}

borrow:

package bookManagement.Operation;
import bookManagement.Book.bookList;
import java.util.Scanner;
public class borrowOperation implements Operation {
    @Override
    public void operation(bookList booklist) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入你要借阅的书名：");
        String name = sc.nextLine();
        booklist.borrowBook(name);
    }
}

delete:

package bookManagement.Operation;
import bookManagement.Book.bookList;
import java.util.Scanner;
public class deleteOperation implements Operation {
    @Override
    public void operation(bookList booklist) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入你要删除的书名：");
        String name = sc.nextLine();
        booklist.deleteBook(name);
    }
}

find:

package bookManagement.Operation;
import bookManagement.Book.Book;
import bookManagement.Book.bookList;
import java.util.Scanner;
public class findOperation implements Operation {
    @Override
    public void operation(bookList booklist) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入你要查找的书名：");
        String name = sc.nextLine();
        Book book = booklist.findBook(name);
        System.out.println(book);
    }
}

return:

package bookManagement.Operation;
import bookManagement.Book.bookList;
import java.util.Scanner;
public class returnOperation implements Operation {
    @Override
    public void operation(bookList booklist) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入你要归还的书名：");
        String name = sc.nextLine();
        booklist.returnBook(name);
    }
}

show:

package bookManagement.Operation;
import bookManagement.Book.bookList;
public class showOperation implements Operation {
    @Override
    public void operation(bookList booklist) {
        booklist.showBooks();
    }
}

update:

package bookManagement.Operation;
import bookManagement.Book.bookList;
import java.util.Scanner;
public class updateOperation implements Operation {
    @Override
    public void operation(bookList booklist) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入你需要更新的书的名称：");
        String name = sc.nextLine();
        System.out.println("请输入更新后的的价格：");
        double price = sc.nextDouble();
        System.out.println("请输入更新后的的类型：");
        String type = sc.nextLine();
        booklist.updateBook(name, price, type);
    }
}

User:

package bookManagement.User;
import bookManagement.Book.bookList;
import bookManagement.Operation.Operation;
public abstract class User {
    protected String name;
    protected Operation[] operations;
    // 根据用户输入执行相应操作
    public abstract int menu();
    public void doOperation(int choice, bookList bookList) {
        operations[choice - 1].operation(bookList);
    }
}

AdminUser：

package bookManagement.User;
import bookManagement.Operation.*;
import java.util.Scanner;
public class AdminUser extends User {
    private Scanner sc = new Scanner(System.in);
    public AdminUser(String name) {
        this.name = name;
        operations = new Operation[]{
                new addOperation(),
                new deleteOperation(),
                new updateOperation(),
                new findOperation(),
                new showOperation(),
        };
    }
    @Override
    public int menu() {
        Scanner sc = new Scanner(System.in);
        System.out.println("====================================");
        System.out.println("欢迎" + this.name + "登录图书管理系统");
        System.out.println("1.添加书籍");
        System.out.println("2.删除书籍");
        System.out.println("3.更新书籍");
        System.out.println("4.查找书籍");
        System.out.println("5.显示当前书籍列表");
        System.out.println("-1.退出");
        System.out.println("请输入您的选择");
        System.out.println("====================================");
        int select = sc.nextInt();
        if (select == -1) {
            close();
        }
        return select;
    }
    public void close() {
        sc.close();
    }
}

OrdinaryUser ：

package bookManagement.User;
import bookManagement.Operation.*;
import java.util.Scanner;
public class OrdinaryUser extends User {
    private Scanner sc = new Scanner(System.in);
    public OrdinaryUser(String name) {
        this.name = name;
        operations = new Operation[]{
                new showOperation(),
                new findOperation(),
                new borrowOperation(),
                new returnOperation(),
        };
    }
    @Override
    public int menu() {
        System.out.println("====================================");
        System.out.println("欢迎" + this.name + "登录图书管理系统");
        System.out.println("1.显示当前书籍列表");
        System.out.println("2.查询书籍");
        System.out.println("3.借阅书籍");
        System.out.println("4.归还书籍");
        System.out.println("-1.退出");
        System.out.println("请输入您的选择");
        int select = sc.nextInt();
        System.out.println("====================================");
        if (select == -1) {
            close();
        }
        return select;
    }
    public void close() {
        sc.close();
    }
}

Main：

package bookManagement;
import bookManagement.Book.bookList;
import bookManagement.User.AdminUser;
import bookManagement.User.OrdinaryUser;
import bookManagement.User.User;
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        bookList bookList = new bookList();
        User user = login();
        while (true) {
            int select = user.menu();
            if (select == -1) {
                System.out.println("Bye~~");
                System.exit(0);
            }
            user.doOperation(select, bookList);
        }
    }
    public static User login() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入您的姓名");
        String name = scanner.nextLine();
        System.out.println("请输入您的身份，1表示普通用户，0表示管理员");
        int who = scanner.nextInt();
        if (who == 1) {
            return new OrdinaryUser(name);
        } else {
            return new AdminUser(name);
        }
    }
}