小型图书管理系统java

Question

要求设计三个类，Book类、BookSysMain类、BookManagement类，输出如图

Answer 1

望采纳！
Book类

package com.book.model;

public class Book {
    //书名
    private String title;

    //作者
    private String authors;

    //出版社
    private String publisher;

    //出版日期
    private String publishDate;

    //ISBN
    private String isbn;

    //价格
    private Double price;


    public Double getPrice() {
        return price;
    }

    public void setPrice(Double price) {
        this.price = price;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getAuthors() {
        return authors;
    }

    public void setAuthors(String authors) {
        this.authors = authors;
    }

    public String getPublisher() {
        return publisher;
    }

    public void setPublisher(String publisher) {
        this.publisher = publisher;
    }

    public String getPublishDate() {
        return publishDate;
    }

    public void setPublishDate(String publishDate) {
        this.publishDate = publishDate;
    }

    public String getIsbn() {
        return isbn;
    }

    public void setIsbn(String isbn) {
        this.isbn = isbn;
    }

    @Override
    public String toString() {
        return "Book{" +
                "title='" + title + '\'' +
                ", authors='" + authors + '\'' +
                ", publisher='" + publisher + '\'' +
                ", publishDate='" + publishDate + '\'' +
                ", isbn='" + isbn + '\'' +
                ", price=" + price +
                '}';
    }
}

BookManagement类

package com.book.model;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class BookManagement {

    public static final List<Book> BOOK_LIST = new ArrayList<Book>();

    /**
     * 创建一本数据
     */
    public void newBook(Scanner scan) {
        Book newBook = new Book();
        //输入 ISBN
        System.out.println("Input ISBN:");
        newBook.setIsbn(scan.nextLine());
        //输入 标题
        System.out.println("Input Title:");
        newBook.setTitle(scan.nextLine());
        //输入 作者
        System.out.println("Input Authors:");
        newBook.setAuthors(scan.nextLine());
        //输入 发布日期
        System.out.println("Input Pub Date:");
        newBook.setPublishDate(scan.nextLine());
        //输入 价格
        System.out.println("Input Price:");
        newBook.setPrice(scan.nextDouble());
        BOOK_LIST.add(newBook);
        System.out.println("The new book is added:");
        System.out.println(newBook.toString());
    }

    /**
     * 删除
     */
    public void deleteBook(Scanner scan) {
        System.out.println("请输入书名>>");
        String title = scan.nextLine();
        int tag = 0;
        for (int i = 0, len = BOOK_LIST.size(); i <= len; i++) {
            if (BOOK_LIST.get(i).getTitle().equalsIgnoreCase(title)) {
                tag = i;
            }
        }
        BOOK_LIST.remove(tag);
    }

    public void init() {
        System.out.println("读取存量图书中");
        readBookTxt("/admin/home/project/qa-demo/mini-book-manage/src/main/java/com/book/model/bookList.txt");
        System.out.println("读取存量图书完成");
        String desc = "-------------------------------------\n" +
                "| Welcome to Book Management System |\n" +
                "-------------------------------------\n" +
                "| 1 New Book(N)                     |\n" +
                "| 2 Delete Book(D)                  |\n" +
                "| 3 Query Book(Q)                   |\n" +
                "| 4 List All(A)                     |\n" +
                "| 5 Save(S)                         |\n" +
                "| 6 Exit(E)                         |\n" +
                "-------------------------------------";
        System.out.println(desc);
        Scanner scan = new Scanner(System.in);
        while (true) {
            System.out.println("Input Command>>");
            String command = scan.nextLine();
            if ("N".equalsIgnoreCase(command)) {
                newBook(scan);
            } else if ("D".equalsIgnoreCase(command)) {
                deleteBook(scan);
            } else if ("A".equalsIgnoreCase(command)) {
                System.out.println(BOOK_LIST);
            } else if ("E".equalsIgnoreCase(command)) {
                System.out.println("感谢使用!");
                break;
            } else {
                System.out.println("请输入正确的指令");
            }
        }
    }

    private void readBookTxt(String fileName) {
        try {
            File myFile = new File(fileName);
            //判断文件是否存在
            if (myFile.isFile() && myFile.exists()) {
                InputStreamReader Reader = new InputStreamReader(new FileInputStream(myFile), "UTF-8");
                //考虑到编码格式，new FileInputStream(myFile)文件字节输入流，以字节为单位对文件中的数据进行读取
                //new InputStreamReader(FileInputStream a, "编码类型")
                //将文件字节输入流转换为文件字符输入流并给定编码格式
                BufferedReader bufferedReader = new BufferedReader(Reader);
                //BufferedReader从字符输入流中读取文本，缓冲各个字符，从而实现字符、数组和行的高效读取。
                //通过BuffereReader包装实现高效读取
                String lineTxt = null;
                while ((lineTxt = bufferedReader.readLine()) != null) {
                    //buffereReader.readLine()按行读取写成字符串
                    System.out.println(lineTxt);
                    String[] split = lineTxt.split(",");
                    Book book = new Book();
                    book.setTitle(split[0]);
                    book.setAuthors(split[1]);
                    book.setPublisher(split[2]);
                    book.setPublishDate(split[3]);
                    book.setIsbn(split[4]);
                    book.setPrice(Double.valueOf(split[5]));
                    BOOK_LIST.add(book);
                }
                Reader.close();
            } else {
                System.out.println("找不到指定的文件");

            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

BookSysMain类

```java
package com.book.model;

public class BookSysMain {

    public static void main(String[] args) {
        //创建管理器
        BookManagement management = new BookManagement();
        //初始化管理器
        management.init();
    }
}

bookList.txt

明朝那些事儿,当前明月,新华出版社,2022-06-02,dns-23ms-23,50.00
三体,刘慈欣,人民出版社,2022-06-01,2932-219k-nss,35.55