图书馆管理系统源码（Java）

Book包->内含Book类与BookList类

Book类用于初始化图书并对其进行操作

BookList类用于存放多本图书

Book类

package Book;public class Book {private String name;private String author;private int price;private String type;private boolean isBorrow;//写一个构造方法 初始化图书内容public Book(String name,String author,int price,String type) {this.author = author;this.name = name;this.type = type;this.price = price;}@Overridepublic String toString() {return "Book{" +"name='" + name + '\'' +", author='" + author + '\'' +", price=" + price +", type='" + type + '\'' +",isBorrow='"+isBorrow()+ '}';}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 isBorrow() {return isBorrow;}public void setBorrow(boolean borrow) {isBorrow = borrow;}
}

BookList类

package Book;public class BookList {private Book[] books;private int usedSize;//假设书架的容量大小为十本书  usedSize是此时书架上有几本书//初始化几本书（可以自定义）public BookList() {this.books = new Book[10];books[0] = new Book("西游记","施耐庵",10,"小说");books[1] = new Book("红楼梦","曹雪芹",14,"小说");books[2] = new Book("三国演义","罗贯中",15,"小说");this.usedSize = 3;}public Book getBooks(int pos) {return books[pos];}public void setBooks(Book book, int pos) {books[pos] = book;}public int getUsedSize() {return usedSize;}public void setUsedSize(int usedSize) {this.usedSize = usedSize;}
}

operatio包

Operation接口

package operation;import Book.BookList;public interface Operation {public void work(BookList bookList);
}

AddOperation 类

package operation;import Book.Book;
import Book.BookList;import java.util.Scanner;public class AddOperation implements Operation {@Overridepublic void work(BookList bookList) {System.out.println("新增图书->");Scanner scan = new Scanner(System.in);System.out.println("请输入书名->");String name = scan.next();System.out.println("请输入作者->");String author = scan.next();System.out.println("请输入价格->");int price = scan.nextInt();System.out.println("请输入类型->");String type = scan.next();Book book = new Book(name,author,price,type);bookList.setBooks(book,bookList.getUsedSize());System.out.println("添加图书成功！");bookList.setUsedSize(bookList.getUsedSize()+1);}
}

BorrowOperation 类

package operation;import Book.Book;
import Book.BookList;import java.util.Scanner;public class BorrowOperation implements Operation {@Overridepublic void work(BookList bookList) {Scanner scan = new Scanner(System.in);System.out.println("借阅图书->");System.out.println("请输入要借阅的书名->");String name = scan.next();int tmp =bookList.getUsedSize();for (int i = 0; i < tmp; i++) {Book book = bookList.getBooks(i);if(name.equals(book.getName())) {bookList.getBooks(i).setBorrow(false);System.out.println("借阅成功！");System.out.println(bookList.getBooks(i).toString());return;}}System.out.println("找不到这本书");}
}

ExitOperation 类

package operation;import Book.BookList;public class ExitOperation implements Operation {@Overridepublic void work(BookList bookList) {System.out.println("退出系统->");System.exit(0);}
}

FindOperation 类

package operation;import Book.BookList;
import Book.Book;
import java.util.Scanner;public class FindOperation implements Operation {@Overridepublic void work(BookList bookList) {System.out.println("查找图书->");Scanner scan = new Scanner(System.in);System.out.println("请输入要查找的书名->");String name = scan.next();int tmp =bookList.getUsedSize();for (int i = 0; i < tmp; i++) {Book book = bookList.getBooks(i);if(name.equals(book.getName())) {System.out.println("找到这本书了，它的信息是->");System.out.println(book.toString());return;}}System.out.println("找不到这本书");}
}

RemoveOperation 类

package operation;import Book.Book;
import Book.BookList;import java.util.Scanner;public class RemoveOperation implements Operation {@Overridepublic void work(BookList bookList) {System.out.println("删除图书->");Scanner scan = new Scanner(System.in);System.out.println("请输入要删除的书名->");String name = scan.next();int tmp = bookList.getUsedSize();int flag = -1;for (int i = 0; i < tmp; i++) {Book book = bookList.getBooks(i);if(name.equals(book.getName())) {flag = i;}}if(flag == -1) {System.out.println("没有这本书，删除失败！");return;}for (int i = flag; i < tmp-1; i++) {bookList.setBooks(bookList.getBooks(i+1),i);}bookList.setBooks(null, tmp-1);bookList.setUsedSize(tmp-1);System.out.println("删除成功！");}
}

ReturnOperation 类

package operation;import Book.Book;
import Book.BookList;import java.util.Scanner;public class ReturnOperation implements Operation {@Overridepublic void work(BookList bookList) {Scanner scan = new Scanner(System.in);System.out.println("归还图书->");System.out.println("请输入要归还的书名->");String name = scan.next();int tmp =bookList.getUsedSize();for (int i = 0; i < tmp; i++) {Book book = bookList.getBooks(i);if(name.equals(book.getName())) {bookList.getBooks(i).setBorrow(true);System.out.println("归还成功！");System.out.println(bookList.getBooks(i).toString());return;}}System.out.println("找不到这本书");}
}

ShowOperation 类

package operation;import Book.BookList;public class ShowOperation implements Operation {@Overridepublic void work(BookList bookList) {System.out.println("显示图书->");int tmp = bookList.getUsedSize();for (int i = 0; i < tmp; i++) {System.out.println(bookList.getBooks(i).toString());}}
}

User包实现用户操作

User父类

package User;
import Book.BookList;
import operation.*;public abstract class User {protected Operation[] operations;protected String name;public User(String name) {this.name = name;}public abstract void doOperation(int choice, BookList bookList);public abstract int menu();
}

AdminUser子类实现管理员操作

package User;
import Book.BookList;
import operation.*;import java.util.Scanner;public class AdminUser extends User {public AdminUser(String name) {super(name);this.operations = new Operation[] {new ExitOperation(),new FindOperation(),new AddOperation(),new RemoveOperation(),new ShowOperation(),};}@Overridepublic void doOperation(int choice, BookList bookList) {this.operations[choice].work(bookList);}@Overridepublic int menu() {System.out.println("********管理人员菜单********");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("**************************");System.out.println("请输入您要进行的操作->");Scanner scan = new Scanner(System.in);int choice = scan.nextInt();return choice;}}

NormalUser子类实现普通用户操作

package User;import Book.BookList;
import operation.*;import java.util.Scanner;public class NormalUser extends User {public NormalUser(String name) {super(name);this.operations = new Operation[] {new ExitOperation(),new FindOperation(),new BorrowOperation(),new ReturnOperation()};}@Overridepublic void doOperation(int choice, BookList bookList) {this.operations[choice].work(bookList);}public int menu() {System.out.println("********读者菜单********");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("***********************");System.out.println("请输入您要进行的操作->");Scanner scan = new Scanner(System.in);int choice = scan.nextInt();return choice;}
}

Main示例

{public static User login() {Scanner scan = new Scanner(System.in);System.out.println("您的姓名是->");String name = scan.next();System.out.println("请选择你要登录的系统->");System.out.println("1、管理员系统");System.out.println("2、读者系统");System.out.println("————————————————————");int choice = scan.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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