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