Java图书管理程序-基于控制台

Java图书管理程序--基于控制台

import java.io.*;

import java.util.*;

public class BooksManage {

public static void main(String[] args)throws IOException,ArrayIndexOutOfBoundsException,

ClassNotFoundException {

String name,author,press,time;

Manager manager1=new Manager();

Scanner input=new Scanner(System.in);

int i=10;

for(;i!=0;){

System.out.println("**********************************菜单*********************************");

System.out.println(" 1.添加书本 2.添加报刊 3.添加视频 4.查询信息5.查看所有资料 0.退出 ");

System.out.print("选择：");

i=input.nextInt();

switch(i){

case 1:System.out.println("开始添加书本信息！");

System.out.print("书名：");

name=input.next();

System.out.print("作者姓名：");

author=input.next();

System.out.print("出版社：");

press=input.next();

Book book1=new Book(name,author,press);

manager1.saveInfo(book1);

break;

case 2:System.out.println("开始添加报纸信息！");

System.out.print("报名：");

name=input.next();

System.out.print("主编辑：");

author=input.next();

System.out.print("报社：");

press=input.next();

NewsPaper newspaper1=new NewsPaper(name,author,press); manager1.saveInfo(newspaper1);

break;

case 3:System.out.println("开始添加视频信息！");

System.out.print("视频名：");

name=input.next();

System.out.print("作者姓名：");

author=input.next();

System.out.print("上传时间：");

time=input.next();

Video video1=new Video(name,author,time);

manager1.saveInfo(video1);

break;

case 4:System.out.println("开始查询相关信息:");

System.out.print("输入文件名：");

name=input.next();

manager1.findInfo(name);

break;

case 5:System.out.println("查看所有资料:");

manager1.getInfo();

break;

case 0:System.out.println("退出程序！");

break;

default:System.out.println("没有该选项，重新选择！");

break;

}

}

}

}

class Manager{

public List list=new LinkedList();

public void saveInfo(Media media) throws IOException,ClassNotFoundException { boolean flag=true;

list.clear();

File f=new File("myfile.txt");

if(f.exists()){

ObjectInputStream oi=new ObjectInputStream(new FileInputStream("myfile.txt"));

try{

while(true){

list.add((Media)oi.readObject());

}

}catch(EOFException e){}

oi.close();

for(Media m : list){

if(media.getName().equals(m.getName())){

flag=false;

break;

}

if(flag==true){

list.add(media);

ObjectOutputStream oo=new ObjectOutputStream(new FileOutputStream("myfile.txt"));

for(Media m : list){

oo.writeObject(m);

}

list.clear();

oo.close();

System.out.println("信息添加成功！");

System.out.println();

}

else{

System.out.println("该文件名已存在");

System.out.println();

list.clear();

}

}

else{

ObjectOutputStream oo=new ObjectOutputStream(new FileOutputStream("myfile.txt"));

oo.writeObject(media);

oo.close();

System.out.println("信息添加成功！");

System.out.println();

}

}

public void getInfo() throws IOException,ClassNotFoundException { list.clear();

File f=new File("myfile.txt");

if(f.exists()){

ObjectInputStream oi=new ObjectInputStream(new FileInputStream("myfile.txt"));

try{

while(true){

list.add((Media)oi.readObject());

}

}catch(EOFException e){}

oi.close();

for(Media m:list){

m.getInfo();

}

list.clear();

else{

System.out.println("还未添加任何图书信息！");

System.out.println();

}

}

public void findInfo(String name)throws IOException,ClassNotFoundException{ boolean flag=false;

list.clear();

File f=new File("myfile.txt");

if(f.exists()){

ObjectInputStream oi=new ObjectInputStream(new FileInputStream("myfile.txt"));

try{

while(true){

list.add((Media)oi.readObject());

}

}catch(EOFException e){}

oi.close();

for(Media m:list){

if(m.getName().equals(name)){

m.getInfo();

flag=true;

break;

}

}

list.clear();

if(flag==false){

System.out.println("无相关信息！");

System.out.println();

}

}

else{

System.out.println("还未添加任何图书信息！");

System.out.println();

}

}

}

abstract class Media implements Serializable{

protected String name;

protected String author;

protected Media(String name,String author){

https://www.360docs.net/doc/d011649348.html,=name;

this.author=author;

protected Media(){

this("未知","未知");

}

public String getName(){

return name;

}

public String getAuthor(){

return author;

}

public abstract void getInfo();

}

class Book extends Media{

private String press;

public Book(String name,String author,String press){

super(name,author);

this.press=press;

}

public Book(){

press="未知";

}

public String getPress(){

return press;

}

public void getInfo(){

System.out.println("\n书名："+name+"\n"+"作者："+author+"\n"+"出版社："+press+"\n");

}

}

class NewsPaper extends Media{

private String press;

public NewsPaper(String name,String author,String press){

super(name,author);

this.press=press;

}

public NewsPaper(){

press="未知";

}

public String getPress(){

return press;

}

public void getInfo(){

System.out.println("\n报名："+name+"\n"+"主编："+author+"\n"+"报社："+press+"\n");

}

class Video extends Media{

private String time;

public Video(String name,String author,String time){

super(name,author);

this.time=time;

}

public Video(){

time="未知";

}

public String getTime(){

return time;

}

public void getInfo(){

System.out.println("\n视频："+name+"\n"+"作者："+author+"\n"+"上传日期："+time+"\n");

}

}