猿创征文 |【JAVA小程序】图书管理系统（继承 多态 接口 链表 一应俱全）附源码

谢谢你陪着稀奇古怪的我

大家好，这里是新一，请多关照🙈🙉🙊。在本篇博客中，新一将会为大带来JAVA小程序——图书管理系统，干货满满哟。（以下结果均在IDEA中编译）希望在方便自己复习的同时也能帮助到大家。😜😜😜🥇🥈🥉

废话不多说，直接进入我们的文章。

文章目录

🥇图书管理系统

既然我们前面介绍了继承，多态，接口等等一系列知识，那么今天新一就带大家来实战一波，面向对象—— 图书管理系统。

1.🥈 基础框架介绍

首先，我们想到，既然是图书管理系统，那肯定必须要有书，书——就是一个对象，一本书吗？当然不是，我们需要的是一堆书——链表存储，存储对象为书
还有用户——对象，以及我们形形色色的功能——对象

于是我们整理出了以下内容：

一、简单的登录
1.用户名和密码输入(简易）
2.管理员判定
二、管理端
1.整理书籍(该功能为可扩展功能)
2.查阅书籍
3.增加书籍
4.删除书籍
5.打印书籍列表
6.退出
三、用户端
1.查询书籍
2.借阅书籍
3.归还书籍
4.退出

于是我们便有了思路，建立三个包，分别是book包——用来存放图书信息，operation包——用来存放功能，user包——用来存放用户这个对象与main函数入口，包以及各函数接口如下：

2.🥈 book包

这里主要存放我们图书有关的类

2.1🥉 Book类——数据有关信息

packagebook;publicclassBook{privateString name;privateString author;privateint price;privateString type;privateboolean isBorrowed;publicBook(String name,String author,int price,String type){this.name = name;this.author = author;this.price = price;this.type = type;}publicStringgetName(){return name;}publicvoidsetName(String name){this.name = name;}publicStringgetAuthor(){return author;}publicvoidsetAuthor(String author){this.author = author;}publicintgetPrice(){return price;}publicvoidsetPrice(int price){this.price = price;}publicStringgetType(){return type;}publicvoidsetType(String type){this.type = type;}publicbooleanisBorrowed(){return isBorrowed;}publicvoidsetBorrowed(boolean borrowed){
        isBorrowed = borrowed;}@OverridepublicStringtoString(){return"Book{"+"name='"+ name +'\''+", author='"+ author +'\''+", price="+ price +", type='"+ type +'\''+(isBorrowed ==true?"， 该书已借出 ":"， 未借出 ")+'}';}}

2.2🥉 BookList类——链表存储书籍

packagebook;publicclassBookList{ListNode head;publicBookList(){ListNode listNode1 =newListNode(newBook("未闻花名","长井龙雪",45,"爱情"));ListNode listNode2 =newListNode(newBook("你的名字","新海诚",48,"爱情"));ListNode listNode3 =newListNode(newBook("天气之子","新海诚",56,"爱情"));ListNode listNode4 =newListNode(newBook("咒术回战","芥见下下",46,"战斗"));ListNode listNode5 =newListNode(newBook("一拳超人","ONE",43,"战斗"));ListNode listNode6 =newListNode(newBook("千与千寻","宫崎骏",42,"奇幻"));
        listNode1.next = listNode2;
        listNode2.next = listNode3;
        listNode3.next = listNode4;
        listNode4.next = listNode5;
        listNode5.next = listNode6;this.head = listNode1;}publicListNodegetHead(){return head;}publicvoidsetHead(ListNode head){this.head = head;}publicintsize(){int count =0;ListNode cur =this.head;while(cur !=null){
            count++;
            cur = cur.next;}return count;}}

2.3🥉 ListNode类——链表节点信息

packagebook;publicclassListNode{publicBook val;publicListNode next;publicListNode(Book val){this.val = val;}}

3.🥈 user包

这里主要存放我们面向用户的功能以及主函数main

3.1🥉 User类——用户接口

packageuser;importbook.BookList;importoperation.IOperation;publicabstractclassUser{protectedString name;protectedIOperation[] iOperations;publicUser(String name){this.name = name;}publicabstractintmenu();publicvoiddoWork(int choice,BookList bookList){
        iOperations[choice].work(bookList);}}

3.2🥉 AdminUser类——管理员

packageuser;importoperation.*;importjava.util.Scanner;publicclassAdminUserextendsUser{publicAdminUser(String name){super(name);this.iOperations =newIOperation[]{newExitOperation(),newFindOperation(),newAddOperation(),newDelOperation(),newDisplayOperation(),newRemoveOperation(),};}publicintmenu(){System.out.println("===========管理员菜单===========");System.out.println("hello "+this.name +" 欢迎来到图书管理系统");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("5.清空书架");System.out.println("0.退出系统");System.out.println("==============================");Scanner scanner =newScanner(System.in);int choice = scanner.nextInt();return choice;}}

3.3🥉 NormalUser类——普通用户

packageuser;importoperation.*;importjava.util.Scanner;publicclassNormalUserextendsUser{publicNormalUser(String name){super(name);this.iOperations =newIOperation[]{newExitOperation(),newFindOperation(),newBorrowOperation(),newReturnOperation(),};}publicintmenu(){System.out.println("===========普通用户菜单===========");System.out.println("hello "+this.name +" 欢迎来到图书管理系统");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("================================");Scanner scanner =newScanner(System.in);int choice = scanner.nextInt();return choice;}}

3.4🥉 Main类——主函数入口

packageuser;importbook.BookList;importjava.util.Scanner;publicclassMain{publicstaticUserlogin(){Scanner scanner =newScanner(System.in);System.out.println("请输入用户名：");String name = scanner.nextLine();System.out.println("请输入图书馆登录密码：");int count =0;while(count <=3){String key = scanner.nextLine();if(key.equals("bityyds")){System.out.println("登录成功，请输入你的身份：one - 管理员，else number - 普通用户");int choice = scanner.nextInt();if(choice ==1){String namekey[]={"ljk","msr"};for(int i =0; i < namekey.length; i++){if(name.equals(namekey[i])){returnnewAdminUser(name);}}System.out.println("抱歉，您非管理员，以下为普通用户界面");returnnewNormalUser(name);}else{returnnewNormalUser(name);}}if(count <3){System.out.println("密码错误，请重新输入: ");}
            count++;}System.out.println("密码错误次数过多，退出系统");System.exit(0);returnnull;}publicstaticvoidmain(String[] args){BookList bookList =newBookList();User user =login();while(true){int choice = user.menu();
            user.doWork(choice, bookList);}}}

4.🥈 operation包

这里主要是我们的功能包。

4.1🥉 AddOperation类——添加图书

packageoperation;importbook.Book;importbook.BookList;importbook.ListNode;publicclassAddOperationimplementsIOperation{publicvoidwork(BookList bookList){System.out.println("新增图书");System.out.println("请输入书名");String bookname = scanner.nextLine();System.out.println("请输入作者");String bookauthor = scanner.nextLine();System.out.println("请输入类型");String booktype = scanner.nextLine();System.out.println("请输入定价");int bookprice = scanner.nextInt();Book book =newBook(bookname, bookauthor, bookprice, booktype);ListNode newHead = bookList.getHead();ListNode node =newListNode(book);
        node.next = newHead;
        bookList.setHead(node);System.out.println("新增成功！");}}

4.2🥉 BorrowOperation类——借阅图书

packageoperation;importbook.Book;importbook.BookList;importbook.ListNode;publicclassBorrowOperationimplementsIOperation{publicvoidwork(BookList bookList){System.out.println("借阅图书");System.out.println("请输入您要借阅的图书名：");String bookName = scanner.nextLine();ListNode cur = bookList.getHead();while(cur !=null){Book book = cur.val;if(bookName.equals(cur.val.getName())){
                book.setBorrowed(true);System.out.println("借阅成功");System.out.println(book);return;}
            cur = cur.next;}System.out.println("没有你要借阅的书");}}

4.3🥉 DelOperation类——删除图书

packageoperation;importbook.BookList;importbook.ListNode;publicclassDelOperationimplementsIOperation{publicvoidwork(BookList bookList){System.out.println("删除图书");System.out.println("请输入你要删除的图书名字：");String bookName = scanner.nextLine();ListNode cur = bookList.getHead();if(cur ==null){System.out.println("图书余量为空，不能删除！");return;}if(bookName.equals(cur.val.getName())){
            bookList.setHead(cur.next);System.out.println("删除成功");return;}while(cur.next !=null){if(bookName.equals(cur.next.val.getName())){
                cur.next = cur.next.next;System.out.println("删除成功");return;}
            cur = cur.next;}System.out.println("未找到删除图书");}}

4.4🥉 DisplayOperation类——显示图书

packageoperation;importbook.Book;importbook.BookList;importbook.ListNode;publicclassDisplayOperationimplementsIOperation{publicvoidwork(BookList bookList){System.out.println("显示图书");ListNode cur = bookList.getHead();while(cur !=null){System.out.println(cur.val);
            cur = cur.next;}}}

4.5🥉 ExitOperation类——退出系统

packageoperation;importbook.BookList;publicclassExitOperationimplementsIOperation{publicvoidwork(BookList bookList){System.out.println("退出系统");System.exit(0);}}

4.6🥉 FindOperation类——查找图书

packageoperation;importbook.BookList;importbook.ListNode;publicclassFindOperationimplementsIOperation{publicvoidwork(BookList bookList){System.out.println("查找图书");System.out.println("请输入你要查找的图书名字：");String bookName = scanner.nextLine();ListNode cur = bookList.getHead();while(cur !=null){if(bookName.equals(cur.val.getName())){System.out.println(cur.val);return;}
            cur = cur.next;}System.out.println("查找书名不存在");}}

4.7🥉 RemoveOperation类——清空书架

packageoperation;importbook.BookList;importbook.ListNode;publicclassRemoveOperationimplementsIOperation{publicvoidwork(BookList bookList){System.out.println("清空书架！系统提示您：请谨慎操作");System.out.println("您是否要清空整个书架： one - 是  other number - 否");int index = scanner.nextInt();if(index ==1){
            bookList.setHead(null);System.out.println("清空成功");return;}System.out.println("您的清空操作未执行！");}}

4.8🥉 ReturnOperation类——清空书架

packageoperation;importbook.Book;importbook.BookList;importbook.ListNode;publicclassReturnOperationimplementsIOperation{publicvoidwork(BookList bookList){System.out.println("归还图书");System.out.println("请输入您要归还的图书名：");String bookName = scanner.nextLine();ListNode cur = bookList.getHead();while(cur !=null){Book book = cur.val;if(bookName.equals(cur.val.getName())){
                book.setBorrowed(false);System.out.println("归还成功");System.out.println(book);return;}
            cur = cur.next;}System.out.println("归还信息不存在，如果您想为图书馆尽一份力，请联系管理员ljk & msr");}

4.9🥉 IOperation类——接口

packageoperation;importbook.BookList;importjava.util.Scanner;/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: mac
 * Date: 2022-09-08
 * Time: 13:04
 */publicinterfaceIOperation{Scanner scanner =newScanner(System.in);publicvoidwork(BookList bookList);}

5.🥈 源码下载

需要源码的兄弟们点这里就OK咯，免费的哦😜😜😜 图书管理系统源码

想对大家说的话

家人们，学到这里我们已经肝完了JAVA图书管理系统🥳🥳🥳，后续新一会持续更JAVA的有关内容，学习永无止境，技术宅，拯救世界！