【JavaSE】图书管理系统源码

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【JavaSE】图书管理系统源码

2023-07-25 07:37| 来源: 网络整理| 查看: 265

一：简介

此图书管理系统项目是利用类，抽象类，封装，继承，多态，接口等进行的一个代码练习。

二：核心需求

1、简单的用户界面（控制台界面）登录界面管理员界面用户界面

2、管理员需要实现的功能查阅书籍增加书籍删除书籍打印书籍列表退出

3、普通用户需要实现的功能查询书籍借阅书籍归还书籍退出

三: 类的设计 1. 创建图书相关的类

先创建 package book

创建 Book 类, 表示一本书

package book; public class Book { private String name; private String author; private int price; private String type; private boolean status; public Book(String name, String author, int price, String type) { this.name = name; this.author = author; this.price = price; this.type = type; } 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 int getPrice() { return price; } public void setPrice(int price) { this.price = price; } public String getType() { return type; } public void setType(String type) { this.type = type; } public boolean isStatus() { return status; } public void setStatus(boolean status) { this.status = status; } @Override public String toString() { return "Book{" + "name='" + name + '\'' + ", author='" + author + '\'' + ", price=" + price + ", type='" + type + '\'' + ", status=" + ((status == true) ? " 借出 " : " 未借出 ") + '}'; } }

创建 BookList 类, 用来保存 N 本书

package book; public class BookList { private Book[] books; private int usedSize; public BookList() { this.books = new Book[10]; books[0] = new Book("三国演义","罗贯中",72,"小说"); books[1] = new Book("西游记","吴承恩",32,"小说"); books[2] = new Book("水浒传","施耐庵",52,"小说"); this.usedSize = 3; } public void setBooks(int pos,Book book) { this.books[pos] = book; } public Book getBooks(int pos) { return this.books[pos]; } public int getUsedSize() { return usedSize; } public void setUsedSize(int usedSize) { this.usedSize = usedSize; } } 2. 创建操作相关的类

先创建 package operation

package operation; import book.BookList; public interface IOperation { void work(BookList bookList); }

接下来创建一组操作类, 每个类对应一个用户的动作 1.添加书籍

package operation; import book.Book; import book.BookList; import java.util.Scanner; public class AddOperation implements IOperation{ @Override public void work(BookList bookList) { Scanner scanner = new Scanner(System.in); System.out.println("请输入图书的名字"); String name = scanner.nextLine(); System.out.println("请输入图书的作者"); String author = scanner.nextLine(); System.out.println("请输入图书的价格"); int price = scanner.nextInt(); System.out.println("请输入图书的类型"); String type = scanner.next(); Book book = new Book(name,author,price,type); bookList.setBooks(bookList.getUsedSize(),book); bookList.setUsedSize(bookList.getUsedSize()+1); } }

2.借阅书籍

package operation; import book.Book; import book.BookList; import java.util.Scanner; public class BorrowOperation implements IOperation{ @Override public void work(BookList bookList) { Scanner scanner = new Scanner(System.in); System.out.println("请输入要借阅的图书的名字"); String name = scanner.nextLine(); int i = 0; for (; i book.setStatus(true); break; } } if(i >= bookList.getUsedSize()) { System.out.println("没有要借阅的这本书!"); return; } } }

3.删除书籍

package operation; import book.Book; import book.BookList; import java.util.Scanner; public class DelOperation implements IOperation { @Override public void work(BookList bookList) { Scanner scanner = new Scanner(System.in); System.out.println("请输入要删除的图书的名字"); String name = scanner.nextLine(); int i = 0; for (; i break; } } if(i >= bookList.getUsedSize()) { System.out.println("没有要删除的这本书!"); return; } int pos = i; for (int j = pos; j @Override public void work(BookList bookList) { System.out.println("展示图书"); for (int i = 0; i @Override public void work(BookList bookList) { System.exit(1); System.out.println("成功退出系统！"); } }

6.查找书籍

package operation; import book.Book; import book.BookList; import java.util.Scanner; public class FindOperation implements IOperation { @Override public void work(BookList bookList) { Scanner scanner = new Scanner(System.in); System.out.println("请输入要查找的图书的名字"); String name = scanner.nextLine(); int i = 0; for (; i System.out.println(book); break; } } if(i >= bookList.getUsedSize()) { System.out.println("没有要查找的这本书!"); return; } } }

7.归还书籍

package operation; import book.Book; import book.BookList; import java.util.Scanner; public class ReturnOperation implements IOperation { @Override public void work(BookList bookList) { Scanner scanner = new Scanner(System.in); System.out.println("请输入要归还的图书的名字"); String name = scanner.nextLine(); int i = 0; for (; i book.setStatus(false); break; } } if(i >= bookList.getUsedSize()) { System.out.println("没有要归还的这本书!"); return; } } } 3. 创建用户相关的类

先创建 package user

创建 User 类, 这是一个抽象类

package user; import book.BookList; import operation.IOperation; public abstract class User { public String name; public IOperation[] operations; public User(String name) { this.name = name; } public abstract int menu(); public void doOperation(int choice, BookList bookList) { this.operations[choice].work(bookList); } }

创建普通用户类, 是 User 的子类

package user; import operation.*; import java.util.Scanner; public class NormalUser extends User { public NormalUser(String name) { super(name); this.operations = new IOperation[]{ new ExitOperation(), new FindOperation(), new BorrowOperation(), new ReturnOperation() }; } @Override public int menu() { Scanner scanner = new Scanner(System.in); System.out.println("普通用户菜单"); System.out.println("============================"); System.out.println("Hello " + this.name + " 欢迎使用图书管理系统！"); System.out.println("1.查找图书"); System.out.println("2.借阅图书"); System.out.println("3.归还图书"); System.out.println("0.退出系统"); System.out.println("============================"); int choice = scanner.nextInt(); return choice; } }

创建管理员用户类

package user; import operation.*; import java.util.Scanner; public class AdminUser extends User { public AdminUser(String name) { super(name); this.operations = new IOperation[] { new ExitOperation(), new FindOperation(), new AddOperation(), new DelOperation(), new DisplayOperation() }; } @Override public int menu() { Scanner scanner = new Scanner(System.in); System.out.println("管理员菜单"); System.out.println("============================"); System.out.println("hello " + this.name + " 欢迎使用图书系统！"); System.out.println("1.查找图书"); System.out.println("2.新增图书"); System.out.println("3.删除图书"); System.out.println("4.显示图书"); System.out.println("0.退出系统"); System.out.println("============================"); int choice = scanner.nextInt(); return choice; } } 4. 进行整合

创建 Main 类和 main 方法, 搭建整体逻辑

import book.BookList; import user.AdminUser; import user.NormalUser; import user.User; import java.util.Scanner; public class Main { public static User login() { Scanner scanner = new Scanner(System.in); System.out.println("请输入你的姓名："); String name = scanner.nextLine(); System.out.println("请输入你的身份：1-》管理员 0-》普通用户"); int choice = scanner.nextInt(); if (choice == 1) { return new AdminUser(name); } else { return new NormalUser(name); } } public static void main(String[] args) { BookList bookList = new BookList(); User user = login(); while (true) { int choice = user.menu(); user.doOperation(choice,bookList); } } }

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【JavaSE】图书管理系统源码

【JavaSE】图书管理系统源码

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