图书管理系统完整代码

package com.youjiuye.bms;/*** @author 丢了风筝的线* 2019-12-2* 图书管理系统的入口*/
import com.youjiuye.service.Tool;public class Bms {public static void main(String[] args) {Tool.Wellcome();Tool.systemOperation();}
}

package com.youjiuye.service;import com.youjiuye.bean.Book;/*** * @author 丢了风筝的线 2019-12-2 图书管理系统的服务类/功能模块*/
public class Service {// 根据书籍类型查看图书public Book[] getBooksByType(String type, Book[] books) {Book[] books1 = new Book[20];int index = 0;// 查找相关类型的书并且存在books1for (int i = 0; i < books.length; i++) {if (books[i] != null && books[i].getType() == type) {// 存储到books1中books1[index++] = books[i];}}return books1;}// 展示书籍public boolean showBooks(Book[] books) {boolean bo = false;for (int i = 0; i < books.length; i++) {if (books[i] != null) {System.out.println(books[i]);bo = true;}}return bo;}/*** 借书操作* * @param book*            所借的书籍* @param books*            图书馆里的图书 每借一本，图书馆里的图书减少一本，并且自己的借阅书库中添加一本*/public void borrowBook(Book book, Book[] lbooks, Book[] userBooks) {if (book != null) {for (int i = 0; i < lbooks.length; i++) {// 如果该容器中的这本书不是null 才进行判断if (lbooks[i] != null) {// 容器中书的idString id1 = lbooks[i].getId();// 要借的书的idString id2 = book.getId();// 基本数据类型的等值判断用==,引用类型的等值判断用方法if (id1.equals(id2)) {lbooks[i] = null;System.out.println("借阅成功！");break;}}}for (int i = 0; i < userBooks.length; i++) {if (userBooks[i] == null) {userBooks[i] = book;break;}}}}// 还书public void returnBook(Book book, Book[] Lbooks, Book[] userBooks) {if (book != null) {for (int i = 0; i < Lbooks.length; i++) {if (Lbooks[i] == null) {Lbooks[i] = book;break;}}for (int i = 0; i < userBooks.length; i++) {if (userBooks[i] != null && userBooks[i].getId().equals(book.getId())) {userBooks[i] = null;}}}}// 修改书籍类型public boolean changeBookType(Book book, String type, Book[] books) {boolean bo = false;if (book != null) {for (int i = 0; i < books.length; i++) {if (books[i] != null) {if (books[i].getId().equals(book.getId())) {// 修改藏书中的书籍类型books[i].setType(type);break;}}}}return bo;}// 添加书籍信息public void addBook(Book[] books, Book book) {if (book != null) {for (int i = 0; i < books.length; i++) {if (books[i] == null) {books[i] = book;System.out.println("添加成功！");break;}}}}/*** 跟据图书的编号生成图书对象* * @param id*            书的编号* @param books*            图书馆里的图书* @return 一个book对象*/public Book getBook(String id, Book[] books) {Book bo = null;for (int i = 0; i < books.length; i++) {if (books[i] != null && books[i].getId().equals(id)) {bo = books[i];}}return bo;}// 判断当前的书库是否为空public boolean judegIsEmpty(Book[] b) {boolean bo = false;for (int i = 0; i < b.length; i++) {if (b[i] != null) {bo = true;}}return bo;}}

package com.youjiuye.service;import java.util.Scanner;import com.youjiuye.bean.Book;
import com.youjiuye.bean.Library;
import com.youjiuye.bean.Users;/*** * @author 丢了风筝的线 2019-12-2 用来给用户进行一些操作提示，并判断用户的输入*/
public class Tool {// 欢迎页public static void Wellcome() {System.out.println("***********************************");System.out.println("\t欢迎来到何老板图书馆                        ");System.out.println("***********************************");}// 获取用户输入身份信息public static Users inputIdentityInfo(Users u) {Scanner sc = new Scanner(System.in);System.out.println("请输入您的姓名：");String name = sc.next();System.out.println("请选择您的身份（用户/管理员）：");String identity = sc.next();System.out.println("请输入密码：");String password = sc.next();if (identityCheck(identity, password)) {System.out.println("登录成功！");u = new Users(name, identity);System.out.println("欢迎 " + identity + " " + name + " 来到系统");hint(identity);} else {System.out.println("您输入的信息有误，请重新输入！");u = inputIdentityInfo(u);}return u;}// 验证用户的身份public static boolean identityCheck(String name, String password) {boolean bo = false;if (name.equals("用户")) {if (password.equals("123")) {bo = true;}} else if (name.equals("管理员")) {if (password.equals("111")) {bo = true;}}return bo;}// 系统功能提示public static void hint(String identity) {System.out.println("请选择您想要的服务");if (identity.equals("用户")) {System.out.println("1、借书\t2、查看已借书籍\t3、还书");} else if (identity.equals("管理员")) {System.out.println("1、添加书籍\t2、修改书籍信息");}}// 确认用户选择的操作public static int judgeChoseOperation() {Scanner sc = new Scanner(System.in);int chose = sc.nextInt();return chose;}// 借阅书籍public static boolean borrow(Service s, Library l, Users u) {boolean bo = true;while (bo) {System.out.println("当前图书馆中藏书：");s.showBooks(l.getBooks());System.out.println("请输入要借阅的图书编号：");Scanner sc = new Scanner(System.in);String bookid = sc.next();Book boo = s.getBook(bookid, l.getBooks());s.borrowBook(boo, l.getBooks(), u.getBos());System.out.println("当前已成功借阅书籍：");s.showBooks(u.getBos());System.out.println("是否继续借阅书籍(y/n):");boolean b = false;bo = judgeOperationCon(b);}return bo;}// 系统操作public static void systemOperation() {Users u0 = null;Users u = inputIdentityInfo(u0);if (u.getIdentity().equals("用户")) {int chose = judgeChoseOperation();userOperationDetail(u, chose);} else {int chose = judgeChoseOperation();adminOperationDetail(u, chose);}}// 用户操作// 管理员操作public static void adminOperationDetail(Users u, int chose) {Service s = new Service();Library l = new Library("和老板图书馆");switch (chose) {case 1:// 添加书籍addBook(s, l);System.out.println("是否进行其他操作(y/n):");boolean boo = false;if (judgeOperationCon(boo)) {hint(u.getIdentity());adminOperationDetail(u, judgeChoseOperation());}break;case 2:// 修改书籍modifyBook(s, l);System.out.println("是否进行其他操作(y/n):");boolean booo = false;if (judgeOperationCon(booo)) {hint(u.getIdentity());adminOperationDetail(u, judgeChoseOperation());}break;default:System.out.println("进行正确 的输入！");System.out.println("1、添加书籍\t2、修改书籍信息");int rchose = judgeChoseOperation();adminOperationDetail(u, rchose);break;}}// 添加书籍信息public static void addBook(Service s, Library l) {boolean b = true;while (b) {System.out.println("当前图书馆中藏书：");s.showBooks(l.getBooks());System.out.println("请输入要还书的编号：");Scanner sc = new Scanner(System.in);String bookid = sc.next();System.out.println("请输入要还书的名字：");String bookName = sc.next();System.out.println("请输入要还书的作者：");String bookAuthor = sc.next();System.out.println("请输入要还书的类型：");String bookType = sc.next();Book book = new Book(bookid, bookName, bookType, bookAuthor);s.addBook(l.getBooks(), book);System.out.println("当前图书馆中的图书：");s.showBooks(l.getBooks());System.out.println("是否继续添加书籍(y/n):");boolean bo = false;b = judgeOperationCon(bo);}}// 修改书籍信息public static void modifyBook(Service s, Library l) {boolean b = true;while (b) {System.out.println("当前图书馆中藏书：");s.showBooks(l.getBooks());System.out.println("请输入要修改的图书的编号：");Scanner sc = new Scanner(System.in);String bookid = sc.next();Book book = s.getBook(bookid, l.getBooks());if (book != null) {s.addBook(l.getBooks(), book);System.out.println("当前图书馆中的图书：");s.showBooks(l.getBooks());System.out.println("是否继续添加书籍(y/n):");boolean bo = false;b = judgeOperationCon(bo);} else {System.out.println("对不起，当前书库中没有该图书");System.out.println("是否继续修改(y/n)：");boolean bo = false;b = judgeOperationCon(bo);}}}// 用户操作public static void userOperationDetail(Users u, int chose) {Service s = new Service();Library l = new Library("和老板图书馆");switch (chose) {case 1:// 借阅书籍if (!borrow(s, l, u)) {System.out.println("是否进行其他操作(y/n):");boolean bo = false;if (judgeOperationCon(bo)) {hint(u.getIdentity());userOperationDetail(u, judgeChoseOperation());}}break;case 2:// 查阅已借阅的书籍if (!s.showBooks(u.getBos())) {System.out.println("您当前还没有已借阅的书籍，请选择其他操作");hint(u.getIdentity());userOperationDetail(u, judgeChoseOperation());} else {System.out.println("是否进行其他操作(y/n):");boolean bo = false;if (judgeOperationCon(bo)) {hint(u.getIdentity());userOperationDetail(u, judgeChoseOperation());}}break;case 3:// 还书returnBook(u, s, l);break;default:System.out.println("进行正确 的输入！");System.out.println("1、借书\t2、查看已借书籍\t3、还书");int rchose = judgeChoseOperation();userOperationDetail(u, rchose);break;}}// 还书private static void returnBook(Users u, Service s, Library l) {if (s.judegIsEmpty(u.getBos())) {System.out.println("已借阅的书籍：");s.showBooks(u.getBos());System.out.println("请输入要还书的编号：");Scanner sc = new Scanner(System.in);String bookid = sc.next();Book book = s.getBook(bookid, u.getBos());s.returnBook(book, l.getBooks(), u.getBos());System.out.println("还书成功");if (s.judegIsEmpty(u.getBos())) {System.out.println("是否继续还书(y/n):");boolean b = false;if (judgeOperationCon(b)) {returnBook(u, s, l);} else {System.out.println("是否进行其他操作(y/n):");boolean bo = false;if (judgeOperationCon(bo)) {hint(u.getIdentity());userOperationDetail(u, judgeChoseOperation());}}} else {System.out.println("您已没有已借阅的图书了，是否选择其他操作(y/n):");boolean bo = false;if (judgeOperationCon(bo)) {hint(u.getIdentity());userOperationDetail(u, judgeChoseOperation());}}} else {System.out.println("您目前还没有已借阅的书籍，请选择其他操作！");hint(u.getIdentity());userOperationDetail(u, judgeChoseOperation());}}// 判断是否继续操作public static boolean judgeOperationCon(boolean b) {String yn = "";Scanner sc = new Scanner(System.in);yn = sc.next();if (yn.equals("y")) {b = true;} else if (yn.equals("n")) {b = false;} else {System.out.println("请进行正确的输入！");judgeOperationCon(b);}return b;}}

package com.youjiuye.bean;/*** * @author 丢了风筝的线 2019-12-2 图书基本类*/
public class Book {private String id;private String bookName;private String author;private String type;public Book(String id) {this.id = id;}public Book(String id, String bookName, String type, String author) {this.id = id;this.bookName = bookName;this.type = type;this.author = author;}@Overridepublic String toString() {return "[ 图书编号 =" + getId() + "\t 书名=" + getBookName() + "\t 作者=" + getAuthor() + "\t 类型=" + getType() + " ]";}public String getId() {return id;}public void setId(String id) {this.id = id;}public String getBookName() {return bookName;}public void setBookName(String bookName) {this.bookName = bookName;}public String getAuthor() {return author;}public void setAuthor(String author) {this.author = author;}public String getType() {return type;}public void setType(String type) {this.type = type;}}

package com.youjiuye.bean;public class Library {private String name;// 图书馆的藏书private static Book[] books = new Book[20];// 初始化图书馆static {books[0] = new Book("001", "java", "编程类", "和老板");books[1] = new Book("002", "html", "编程类", "江南");books[2] = new Book("003", "流浪地球", "科幻类", "爪哇");books[3] = new Book("004", "天龙八部", "武侠类", "金庸");books[4] = new Book("005", "一千零一夜", "儿童类", "安徒生");books[5] = new Book("006", "霸道总裁", "言情类", "萌妹");books[6] = new Book("007", "射雕英雄传", "武侠类", "金庸");}public Library(String name) {this.name = name;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Book[] getBooks() {return books;}}

package com.youjiuye.bean;public class Users {private String name;private String identity;private String password;// 存放借阅的图书private Book[] bos = new Book[10];public Users() {}public Users(String name, String identity) {this.name = name;this.identity = identity;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getIdentity() {return identity;}public void setIdentity(String identity) {this.identity = identity;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public Book[] getBos() {return bos;}public void setBos(Book[] bos) {this.bos = bos;}@Overridepublic String toString() {return "Users [name=" + getName() + "identity=" + getIdentity() + ", password=" + getPassword() + "]";}}

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