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 list = new ArrayList();

//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

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