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<span style="font-size:18px;">用Java编写一个图书管理系统：</span>
<span style="font-size:18px;">需求：能列表化显示图书信息：并且能够完成图书出入库、显示全部、增加图书、客户能够购买图书；</span>
<span style="font-size:18px;"> </span>
<span style="font-size:18px;">一、编写图书类：图书属性有（书的ID、书名、作者、发布日期、书的价格、书的库存）即MVC中的模型</span><span style="font-size: 18px; font-family: Arial, Helvetica, sans-serif;">（</span><span style="font-size: 18px; color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;">model</span><span style="font-size: 18px; font-family: Arial, Helvetica, sans-serif;">）。</span>
<span style="font-size:18px;">package BookManager;
import java.io.Serializable;
/*图书管理系统
* 第一层：图书类、模型（<span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px; font-size: 13px;">model</span>）
*/
public class Book implements Serializable{
private int BookNo;
private String BookName;
private String BookWriter;
private String BookPubDate;
private double BookPrice;
private int BookCount;
public Book() {
super();
}
public Book(int bookNo, String bookName, String bookWriter,
String bookPubDate, double bookPrice, int bookCount) {
super();
this.BookNo = bookNo;
this.BookName = bookName;
this.BookWriter = bookWriter;
this.BookPubDate = bookPubDate;
this.BookPrice = bookPrice;
this.BookCount = bookCount;
}
public int getBookNo() {
return BookNo;
}
public void setBookNo(int bookNo) {
BookNo = bookNo;
}
public String getBookName() {
return BookName;
}
public void setBookName(String bookName) {
BookName = bookName;
}
public String getBookWriter() {
return BookWriter;
}
public void setBookWriter(String bookWriter) {
BookWriter = bookWriter;
}
public String getBookPubDate() {
return BookPubDate;
}
public void setBookPubDate(String bookPubDate) {
BookPubDate = bookPubDate;
}
public double getBookPrice() {
return BookPrice;
}
public void setBookPrice(double bookPrice) {
BookPrice = bookPrice;
}
public int getBookCount() {
return BookCount;
}
public void setBookCount(int bookCount) {
BookCount = bookCount;
}
}
</span><span style="font-size:18px;">二、对图书进行各种操作，MVC中的控制器<span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;">(controller).</span></span>
<span style="font-size:18px;"><span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;"></span></span><pre name="code" class="java">
package BookManager;
import java.io.*;
import java.util.*;
/*
* 第二层：对Book的操作
*/
public class BookZip {
private List<Book> bookList = new ArrayList<Book>();
public BookZip() {
super();
readFile();
if (bookList.size() == 0) { //对图书进行初始化，没有图书，则添加图书
Book book = new Book(10001, "斗破苍穹", "天蚕土豆", "2008-01-01", 120.5, 5555);
insertBook(book);
book = new Book(10002, "魔戒", "莫尔斯", "2006-01-01", 220.5, 5555);
insertBook(book);
book = new Book(10003, "哈利波特", "罗琳", "2009-08-01", 20.5, 2365);
insertBook(book);
book = new Book(10004, "时间机器", "威尔", "2002-01-05", 170.5, 5624);
insertBook(book);
book = new Book(10005, "斗罗大陆", "唐家三少", "2003-01-01", 80.5, 8762);
insertBook(book);
}
}
public void insertBook(Book book) { //添加图书
bookList.add(book);
saveFile();
}
public void deleteBook(int id) { //删除图书
for (int i = 0; i < bookList.size(); i++) {
Book book = bookList.get(i);
if (book.getBookNo() == id) {
bookList.remove(i);
saveFile();
return;
}
}
}
public void upDataBook(Book book) { //更新图书
for (int i = 0; i < bookList.size(); i++) {
Book book1 = bookList.get(i);
if (book1.getBookNo() == book.getBookNo()) {
book1.setBookWriter(book.getBookWriter());
book1.setBookName(book.getBookName());
book1.setBookPrice(book.getBookPrice());
book1.setBookCount(book.getBookCount());
book1.setBookPubDate(book.getBookPubDate());
saveFile();
return;
}
}
}
public List<Book> selectBooks() { //返回图书列表
return bookList;
}
public Book selectBook(int id) { <span style="line-height: 20.02px; font-family: arial;">//用书的ID找书名</span>
Book book = new Book();
for (int i = 0; i < bookList.size(); i++) {
book = bookList.get(i);
if (book.getBookNo() == id) {
return book;
}
}
return null;
}
public void readFile() { //读取文件
FileInputStream fis = null;
ObjectInputStream ois = null;
String name = "G:/java/com.jerel.0619/src/Bookcopy.txt"; //读取文件路径
try {
fis = new FileInputStream(name);
ois = new ObjectInputStream(fis);
bookList = (List<Book>) ois.readObject();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} finally {
try {
if (ois != null)
ois.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public void saveFile() { //存放文件
ObjectOutputStream oos = null;
FileOutputStream fos = null;
String name = "G:/java/com.jerel.0619/src/Bookcopy.txt"; //存放文件路径（与读取一致）
try {
fos = new FileOutputStream(name);
oos = new ObjectOutputStream(fos);
oos.writeObject(bookList);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (oos != null)
oos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}<span style="font-size:18px;"><span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;"> </span></span>三、管理员、用户登陆界面MVC中的View(视图)
<span style="font-size:18px;"><span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;"></span></span><pre name="code" class="java">（一）、管理员
package BookManager;
import java.util.List;
import java.util.Scanner;
/*
* 第三层：管理员测试Book类
*/
public class BookTest {
private BookZip bookzip = new BookZip(); //new 一个图书管理类对象;
private static Scanner sc;
private static int which;
public static void main(String[] args) {
sc = new Scanner(System.in);
System.out.println("欢迎使用图书书店!");
System.out.println("请输入用户名：");
String userName = sc.next();
System.out.println("请输入密码：");
String userpwd = sc.next();
BookTest bookTest = new BookTest();
if (userName.equals("allen") && userpwd.equals("123")) {
System.out.println("成功");
bookTest.showMainView();
while(which !=5 ){
bookTest.adminOption();
}
} else {
System.out.println("密码账号错误");
}
}
public void showMainView() {
System.out.println("===================================" +
"欢迎登陆库存管理系统===================================");
System.out.println("书号\t\t书名\t\t作者\t\t发布日期\t\t价格\t\t库存");
List<Book> list = bookzip.selectBooks();
for (Book book : list) {
System.out.print(book.getBookNo() + "\t\t");
System.out.print(book.getBookName() + "\t\t");
System.out.print(book.getBookWriter() + "\t\t");
System.out.print(book.getBookPubDate() + "\t");
System.out.print(book.getBookPrice() + "\t\t");
System.out.print(book.getBookCount() + "\n");
}
System.out.println("请选择进行的操作:1.图书入库 2.图书出库 3.查询全部图书 4.新增图书5.退出");
}
public void adminOption(){
int which = sc.nextInt();
switch (which) {
case 1://入库
addCount();
break;
case 2://出库
outCount();
break;
case 3://查询全部
showMainView();
break;
case 4://新增图书
addBook();
break;
default://退出a
bookzip.saveFile();
break;
}
}
public void outCount(){
System.out.println("选择操作的图书书号");
int bookId = sc.nextInt();
Book book = bookzip.selectBook(bookId);
System.out.println("输入出库的数量");
int num = sc.nextInt();
book.setBookCount(book.getBookCount()-num);
bookzip.saveFile();
showMainView();
adminOption();
}
public void addCount(){
System.out.println("请选择要操作的图书书号");
int id = sc.nextInt();
List<Book> list = bookzip.selectBooks();
for (int i = 0; i < list.size(); i++) {
Book book = list.get(i);
if (book.getBookNo() == id){
System.out.println("选择操作的数量");
int a = sc.nextInt();
book.setBookCount(book.getBookCount()+a);
bookzip.saveFile();
showMainView();
adminOption();
}
}System.out.println("输入错误!");
}
public void addBook(){
System.out.println("请依次录入：");
System.out.println("书的编号");
int a = sc.nextInt();
System.out.println("书的名字：");
String b = sc.next();
System.out.println("书的作者");
String c = sc.next();
System.out.println("书的发布日期");
String d = sc.next();
System.out.println("书的价格");
double e = sc.nextDouble();
System.out.println("书的库存");
int f = sc.nextInt();
// Book book = new Book(a,b,c,d,e,f);
Book book = new Book();
book.setBookNo(a);
book.setBookName(b);
book.setBookWriter(c);
book.setBookPubDate(d);
book.setBookPrice(e);
book.setBookCount(f);
bookzip.insertBook(book);
showMainView();
adminOption();
}
}
<span style="font-size:18px;"><span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;"> </span></span>
<span style="font-size:18px;"><span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;"></span></span><pre name="code" class="java">package BookManager;
//用户登录界面
import java.util.*;
public class BookUser {
private BookZip bookzip = new BookZip();// new 一个对象;
private static Scanner sc;
private static int which;
public static void main(String[] args) {
sc = new Scanner(System.in);
System.out.println("欢迎使用图书书店!");
System.out.println("请输入用户名：");
String userName = sc.next();
System.out.println("请输入密码：");
String userpwd = sc.next();
BookUser bookUser = new BookUser();
if (userName.equals("user") && userpwd.equals("12345")) {
System.out.println("成功");
bookUser.showMainView();
while (which != 3) {
bookUser.adminOption();
}
} else {
System.out.println("密码账号错误");
}
}
public void showMainView() {
System.out.println("==================================="
+ "欢迎登陆库存管理系统===================================");
System.out.println("书号\t\t书名\t\t作者\t\t发布日期\t\t价格\t\t库存");
List<Book> list = bookzip.selectBooks();
for (Book book : list) {
System.out.print(book.getBookNo() + "\t\t");
System.out.print(book.getBookName() + "\t\t");
System.out.print(book.getBookWriter() + "\t\t");
System.out.print(book.getBookPubDate() + "\t");
System.out.print(book.getBookPrice() + "\t\t");
System.out.print(book.getBookCount() + "\n");
}
System.out.println("请选择进行的操作:1.查询全部图书 2.结账 3.退出");
}
public void adminOption() {
int which = sc.nextInt();
switch (which) {
case 1:// 查询全部图书
showMainView();
break;
case 2:// 结账
BuyBooks();
break;
default: // 退出
bookzip.saveFile();
break;
}
}
public void BuyBooks() {
Book book = null;
double total = 0.0, amt = 0.0;
Map<Book, Object> map = new HashMap<Book, Object>();//
while (true) {
System.out.println("选择购买图书编号ID:");
int bookId = sc.nextInt();
book = bookzip.selectBook(bookId);
System.out.println("选择购买数量:");
int count = sc.nextInt();
if (book.getBookCount() < count) {
System.out.println("购买数量太大，请重新输入");
continue;
}
map.put(book, count);//
System.out.println(book.getBookName() + ":" + book.getBookPrice());
total = book.getBookPrice() * count;
System.out.println("小记:" + total);
amt += total;
// book.setBookCount(book.getBookCount() - count);
//(95-101行代码与 68行和79行代码)和此代码相同
System.out.println("是否继续？是/y 否/n");
String a = sc.next();
if (a.equals("n"))
break;
}
System.out.println("总计:" + amt);
System.out.println("支付:");
double pay = sc.nextDouble();
System.out.println("找零:" + (pay - amt));
Set<Book> set = map.keySet();//95-101行代码与 68行和79行代码共同
Iterator<Book> it = set.iterator();
while (it.hasNext()) {
Book book1 = (Book) it.next();
int count = Integer.parseInt(map.get(book1).toString());
book1.setBookCount(book1.getBookCount() - count);
}
bookzip.saveFile();
showMainView();
adminOption();
}
}
四、部分截图：
<span style="font-size:18px;"><span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;"> </span></span>
<span style="font-size:18px;"><span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;">（一）、管理员（部分功能未展示）</span></span>
<span style="font-size:18px;"><span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;"><img src="http://img.blog.csdn.net/20160621093947072?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /> </span></span>
<span style="font-size:18px;"><span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;"><img src="http://img.blog.csdn.net/20160621093950916?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /> </span></span>
<span style="font-size:18px;"><span style="color: rgb(51, 51, 51); font-family: arial; line-height: 20.02px;">（二）、用户（结账） <img src="http://img.blog.csdn.net/20160621093956588?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /> </span></span>
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原文地址：http://blog.csdn.net/qq_34122768/article/details/51724700
