Java開發基于控制臺的購書系統

題目

開發基于控制臺的購書系統。具體要求如下：
（1）輸出所有圖書的信息：包括每本圖書的圖書編號、圖書名稱、圖書單價和庫存數量。
（2）顧客購買圖書：根據提示輸入圖書編號來購買圖書，并根據提示輸入購買圖書數量（用戶必須連續購書三次）。
（3）購書完畢后輸出顧客的訂單信息：包括訂單號、訂單明細、訂單總額和訂單日期。
系統運行界面如圖-1所示。

代碼

Book.java
public class Book {
// 圖書編號
private String number;
// 圖書名稱
private String name;
// 圖書單價
private int price;
// 庫存數量
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 "編號：" + number + " 書名：" + name + " 價格：" + price + " 庫存量：" + stockNumber; }

}

Order.java
public class Order {
// 訂單號
private long OrderNumber;
// 訂單細節：書本編號、書本名字、單價
private String OrderInfo;
// 訂單總額
private int OrderSum;
// 訂單日期
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 "個人訂單" + " " + "訂單編號：" + OrderNumber + " " + OrderInfo + " " + "圖書總價：" + OrderSum+ " " + "創建時間：" + OrderData; }

PurchaseBookSystem.java
public class PurchaseBookSystem{

ArrayList<Book> list = new ArrayList<Book>(); //存放書本信息 Book[] arrBook = new Book[20]; //存放訂單信息 Order[] arrOrder = new Order[20];public static void main(String[] args) {PurchaseBookSystem pbs = new PurchaseBookSystem();//存入圖書信息pbs.InputBookInfo();//購書系統主頁面pbs.mainPage(); }/*** 購書系統主頁面*/ public void mainPage(){Scanner sc = new Scanner(System.in);for(int i = 0; i < 100; i++){System.out.println("*****************************");System.out.println("\t通理工購書系統");System.out.println("\t1.圖書信息");System.out.println("\t2.購買圖書");System.out.println("\t3.訂單信息");System.out.println("\t4.退出系統");System.out.print("\t請選擇你需要的業務：");int number = sc.nextInt();switch (number) {case 1://輸出圖書信息bookInfo();break;case 2://購買圖書bookBought();break;case 3:lookOrder();break;case 4:System.out.println("退出成功！");return;default:System.out.println("請輸入正確的數字！");break;}} }/*** 存入圖書信息*/ public void InputBookInfo(){Book book1 = new Book("0001","紅樓夢",298,999);Book book2 = new Book("0002","西游記",49,999);Book book3 = new Book("0003","三國演義",98,999);Book book4 = new Book("0004","水滸傳",128,999);Book book5 = new Book("0005","魯濱遜漂流記",68,999);arrBook[0] = book1;arrBook[1] = book2;arrBook[2] = book3; arrBook[3] = book4;arrBook[4] = book5;for (Book book : arrBook) {list.add(book);} }/*** 輸出圖書信息*/ public void bookInfo(){for(int i = 0; i < list.size(); i++){if(list.get(i) != null){System.out.println(list.get(i));}} }/*** 購買圖書*/ public void bookBought(){int k = 0;Scanner sc = new Scanner(System.in);for(int i = 0; i < 3; i++){System.out.print("請輸入您需要購買的圖書編號：");String number = sc.next();//此處判斷是否存在圖書編號有問題，輸入0002的話，循環if判斷不存在，會走到else打印輸出錯誤，走第二次才能查找到，會多打印一次輸入錯誤

// for(int z = 0; z < list.size(); z++){
// if(number.equals(arrBook[z].getNumber())){
// System.out.println(“輸入正確”);
// }else{
// System.out.println(“輸入錯誤”);
// return;
// }
// }
for(int j = 0; j < list.size(); j++){
if(number.equals(arrBook[j].getNumber())){
System.out.println(arrBook[j]);
System.out.print(“請輸入您需要購買的數量：”);
int boughtNumber = sc.nextInt();
//當庫存數量大于需要購買數量的時候可以購買
if(arrBook[j].getStockNumber() > boughtNumber && arrBook[j].getStockNumber() > 0){
//修改庫存
arrBook[j].setStockNumber(arrBook[j].getStockNumber() - boughtNumber);
//生成訂單
createOrder(k,arrBook[j],boughtNumber);
k++;
break;
}else{
System.out.println(“超過可購買數量！請重新購買！”);
break;
}
}
}
}
}

/*** 生成訂單*/ 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 = "圖書編號：" + arr.getNumber() + " "+ "圖書名：" + arr.getName() + " " + "圖書價格：" + arr.getPrice(); Order order = new Order(orderNumber,OrderInfo,OrderSum,OrderData);arrOrder[i] = order;System.out.println("訂單已提交!");System.out.println("訂單號:" + orderNumber + " " + OrderInfo + " " + "訂單金額：" + OrderSum + " " + "訂單生成時間：" + OrderData); }/*** 查看訂單*/ public void lookOrder(){for(int i = 0; i < arrOrder.length; i++){if(arrOrder[i] != null){System.out.println(arrOrder[i]);}} }

}

實現效果

總結

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