Java实现基于控制台的购书系统基本操作

Java开发基于控制台的购书系统

题目

开发基于控制台的购书系统。具体要求如下：
（1）输出所有图书的信息：包括每本图书的图书编号、图书名称、图书单价和库存数量。
（2）顾客购买图书：根据提示输入图书编号来购买图书，并根据提示输入购买图书数量（用户必须连续购书三次）。
（3）购书完毕后输出顾客的订单信息：包括订单号、订单明细、订单总额和订单日期。
系统运行界面如图-1所示。

代码

Book.java
public class Book {
// 图书编号
private String number;
// 图书名称
private String name;
// 图书单价
private int price;
// 库存数量
private int stockNumber;

public Book() {
	super();
}

public Book(String number, String name, int price, int stockNumber) {
	super();
	this.number = number;
	this.name = name;
	this.price = price;
	this.stockNumber = stockNumber;
}

public String getNumber() {
	return number;
}

public void setNumber(String number) {
	this.number = number;
}

public String getName() {
	return name;
}

public void setName(String name) {
	this.name = name;
}

public int getPrice() {
	return price;
}

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

public int getStockNumber() {
	return stockNumber;
}

public void setStockNumber(int stockNumber) {
	this.stockNumber = stockNumber;
}

@Override
public String toString() {
	return "编号：" + number + " 书名：" + name + " 价格：" + price + " 库存量：" + stockNumber;
} 

}

Order.java
public class Order {
// 订单号
private long OrderNumber;
// 订单细节：书本编号、书本名字、单价
private String OrderInfo;
// 订单总额
private int OrderSum;
// 订单日期
private String OrderData;

public Order() {
	super();
}

public Order(long orderNumber, String orderInfo, int orderSum, String orderData) {
	super();
	OrderNumber = orderNumber;
	OrderInfo = orderInfo;
	OrderSum = orderSum;
	OrderData = orderData;
}

public long getOrderNumber() {
	return OrderNumber;
}

public void setOrderNumber(long orderNumber) {
	OrderNumber = orderNumber;
}

public String getOrderInfo() {
	return OrderInfo;
}

public void setOrderInfo(String orderInfo) {
	OrderInfo = orderInfo;
}

public int getOrderSum() {
	return OrderSum;
}

public void setOrderSum(int orderSum) {
	OrderSum = orderSum;
}

public String getOrderData() {
	return OrderData;
}

public void setOrderData(String orderData) {
	OrderData = orderData;
}

@Override
public String toString() {
	return "个人订单" + " " + "订单编号：" + OrderNumber + " " + OrderInfo + " " + "图书总价：" + OrderSum
			+ " " + "创建时间：" + OrderData;
} 

PurchaseBookSystem.java
public class PurchaseBookSystem{

ArrayList<Book> list = new ArrayList<Book>();
//存放书本信息
Book[] arrBook = new Book[20];
//存放订单信息
Order[] arrOrder = new Order[20];

public static void main(String[] args) {
	PurchaseBookSystem pbs = new PurchaseBookSystem();
	//存入图书信息
	pbs.InputBookInfo();
	//购书系统主页面
	pbs.mainPage();
}

/**
 * 购书系统主页面
 */
public void mainPage(){
	Scanner sc = new Scanner(System.in);
	for(int i = 0; i < 100; i++){
		System.out.println("*****************************");
		System.out.println("\t通理工购书系统");
		System.out.println("\t1.图书信息");
		System.out.println("\t2.购买图书");
		System.out.println("\t3.订单信息");
		System.out.println("\t4.退出系统");
		System.out.print("\t请选择你需要的业务：");
		int number = sc.nextInt();
		switch (number) {
		case 1:
			//输出图书信息
			bookInfo();
			break;
		case 2:
			//购买图书
			bookBought();
			break;
		case 3:
			lookOrder();
			break;
		case 4:
			System.out.println("退出成功！");
			return;
		default:
			System.out.println("请输入正确的数字！");
			break;
		}
	}
}

/**
 * 存入图书信息
 */	
public void InputBookInfo(){
	
	Book book1 = new Book("0001","红楼梦",298,999);
	Book book2 = new Book("0002","西游记",49,999);
	Book book3 = new Book("0003","三国演义",98,999);
	Book book4 = new Book("0004","水浒传",128,999);
	Book book5 = new Book("0005","鲁滨逊漂流记",68,999);
	
	arrBook[0] = book1;
	arrBook[1] = book2;
	arrBook[2] = book3;	
	arrBook[3] = book4;
	arrBook[4] = book5;
	
	for (Book book : arrBook) {
		list.add(book);
	}
}

/**
 * 输出图书信息
 */
public void bookInfo(){
	for(int i = 0; i < list.size(); i++){
		if(list.get(i) != null){
			System.out.println(list.get(i));
		}
	}
}

/**
 * 购买图书
 */
public void bookBought(){
	int k = 0;
	Scanner sc = new Scanner(System.in);
	for(int i = 0; i < 3; i++){
		System.out.print("请输入您需要购买的图书编号：");
		String number = sc.next();
		//此处判断是否存在图书编号有问题，输入0002的话，循环if判断不存在，会走到else打印输出错误，走第二次才能查找到，会多打印一次输入错误 

// for(int z = 0; z < list.size(); z++){
// if(number.equals(arrBook[z].getNumber())){
// System.out.println(“输入正确”);
// }else{
// System.out.println(“输入错误”);
// return;
// }
// }
for(int j = 0; j < list.size(); j++){
if(number.equals(arrBook[j].getNumber())){
System.out.println(arrBook[j]);
System.out.print(“请输入您需要购买的数量：”);
int boughtNumber = sc.nextInt();
//当库存数量大于需要购买数量的时候可以购买
if(arrBook[j].getStockNumber() > boughtNumber && arrBook[j].getStockNumber() > 0){
//修改库存
arrBook[j].setStockNumber(arrBook[j].getStockNumber() - boughtNumber);
//生成订单
createOrder(k,arrBook[j],boughtNumber);
k++;
break;
}else{
System.out.println(“超过可购买数量！请重新购买！”);
break;
}
}
}
}
}

/**
 * 生成订单
 */
public void createOrder(int i,Book arr,int boughtNumber){
	
	long orderNumber = i + 10001;
	int OrderSum = arr.getPrice() * boughtNumber;
	SimpleDateFormat date = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
	String OrderData = date.format(new Date());
	String OrderInfo = "图书编号：" + arr.getNumber() + " "+ "图书名：" + arr.getName() + " " + "图书价格：" + arr.getPrice();		
	Order order = new Order(orderNumber,OrderInfo,OrderSum,OrderData);
	arrOrder[i] = order;
	System.out.println("订单已提交!");
	System.out.println("订单号:" + orderNumber + " " + OrderInfo + " " + "订单金额：" + OrderSum + " " + "订单生成时间：" + OrderData);
}

/**
 * 查看订单
 */
public void lookOrder(){
	for(int i = 0; i < arrOrder.length; i++){
		if(arrOrder[i] != null){
			System.out.println(arrOrder[i]);
		}
	}
} 

}

实现效果

本文地址：https://blog.csdn.net/weixin_45231452/article/details/108030653