超市會員系統

 

會員類

public class Member {
//姓名 會員卡號 密碼 會員積分
private String name;//會員卡名字
private int cardId;//會員卡號
private String password;//會員卡密碼
private int score;//會員卡積分
//開卡日期
private String registDate;

public Member() {
}
public Member(String name, int cardId, String password, int score) {
this.name = name;
this.cardId = cardId;
this.password = password;
this.score = score;
}

public Member(String name, int cardId, String password, int score,
String registDate) {
super();
this.name = name;
this.cardId = cardId;
this.password = password;
this.score = score;
this.registDate = registDate;
}
public String getRegistDate() {
return registDate;
}
public void setRegistDate(String registDate) {
this.registDate = registDate;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getCardId() {
return cardId;
}
public void setCardId(int cardId) {
this.cardId = cardId;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public int getScore() {
return score;
}
public void setScore(int score) {
this.score = score;
}
}

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實現類

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Random;
import java.util.Scanner;
public class MemberDao {
Scanner input = new Scanner(System.in);
List<Member> memberList = new ArrayList<Member>();

public void menu(){
System.out.println("*************************歡迎進入超市會員管理系統*************************");
System.out.println("1.積分累計 2.積分兌換 3.查詢剩餘積分 4.修改密碼 5.開卡 6.退出");
System.out.println("*******************************************************************");
System.out.print("請選擇：");
}

public void start(){
do{
menu();
int choose = input.nextInt();
switch(choose){
case 1:
if (saveScore()) {
System.out.println("積分累計成功！");
} else {
System.out.println("積分累計失敗！");
}
continue;
case 2:
if (minusScore()) {
System.out.println("積分兌換成功！");
} else {
System.out.println("積分兌換失敗！");
}
continue;
case 3:
showScore();
continue;
case 4:
if (changePwd()) {
System.out.println("密碼修改爲功！");
} else {
System.out.println("密碼修改失敗！");
}
continue;
case 5:
register();
continue;
case 6:
System.out.println("感謝您的使用，歡迎下次使用！");
break;
default:
System.out.println("您的操做有誤，請從新選擇：");
continue;
}
break;
}while(true);
}

//查詢會員是否存在,會員密碼不區分大小寫
public Member hasMember(Member member){
if(member.getPassword()!=null){
for (int i = 0; i < memberList.size(); i++) {
if(memberList.get(i).getCardId()==member.getCardId() && memberList.get(i).getPassword().equalsIgnoreCase(member.getPassword())){
return memberList.get(i);
}
}
}else{
for (int i = 0; i < memberList.size(); i++) {
if(memberList.get(i).getCardId()==member.getCardId()){
return memberList.get(i);
}
}
}
return null;
}

//修改會員密碼
public boolean changePwd(){
Member member=new Member();
System.out.print("請輸入您的會員卡號：");
member.setCardId(input.nextInt());
System.out.print("請輸入您的會員卡密碼：");
member.setPassword(input.next());
if((member=hasMember(member))!=null){
System.out.print("請輸入新的會員密碼：");
//新的會員密碼不能小於6位
String pwd;
boolean flag = true;
do{
pwd = input.next();
if(pwd.length()<6){
System.out.print("會員密碼不能小於6位，請從新輸入會員密碼：");
flag = false;
}else{
flag = true;
member.setPassword(pwd);
}
}while(!flag);
return true;
}else{
System.out.println("您輸入的會員卡號或密碼錯誤,沒法修改密碼！");
}
return false;
}

//積分累計
public boolean saveScore(){
Member member=new Member();
System.out.print("請輸入您的會員卡號：");
member.setCardId(input.nextInt());
System.out.print("請輸入您的會員卡密碼：");
member.setPassword(input.next());
if((member=hasMember(member))!=null){
System.out.print("請輸入您這次消費金額（消費1元累計1積分）：");
int score=input.nextInt();
member.setScore(member.getScore()+score);
return true;
}else{
System.out.println("您輸入的會員卡號或密碼錯誤，沒法積累積分！");
}
return false;
}

//積分兌換
public boolean minusScore(){
Member member=new Member();
System.out.print("請輸入您的會員卡號：");
member.setCardId(input.nextInt());
System.out.print("請輸入您的會員卡密碼：");
member.setPassword(input.next());
if((member=hasMember(member))!=null){
System.out.print("請輸入您須要兌換使用的積分（100積分抵用0.1元，不足100的積分不作抵用）：");
int score=input.nextInt();
if(score<=member.getScore()){
member.setScore(member.getScore()-score);
System.out.println("您的消費金額中使用會員積分抵消"+score/100*0.1+"元");
return true;
}else{
System.out.println("抱歉，您的積分不夠，沒法抵用消費金額.");
}
}else{
System.out.println("您輸入的會員卡號或密碼錯誤，沒法完成積分兌換！");
}
return false;
}

//生成隨機卡號
public int createId(){
boolean flag=true;
Random random = new Random();
int id=random.nextInt(99999999);
for(Member member:memberList){
if(member.getCardId()==id){
id=random.nextInt(99999999);
}
}
return id;
}

//開卡
public void register(){
Member member=new Member();
System.out.print("請輸入註冊姓名：");
member.setName(input.next());
//會員卡號隨機生成
member.setCardId(this.createId());
System.out.print("請輸入註冊密碼：");
//會員密碼不能小於6位
String pwd;
boolean flag = true;
do{
pwd = input.next();
if(pwd.length()<6){
System.out.print("會員密碼不能小於6位，請從新輸入註冊密碼：");
flag = false;
}else{
flag = true;
member.setPassword(pwd);
}
}while(!flag);
member.setScore(100);

//增長會員開卡日期
Date date = new Date();
String registDate = new SimpleDateFormat("yyyy-MM-dd").format(date);
member.setRegistDate(registDate);

memberList.add(member);
System.out.println("恭喜，開通會員卡成功，系統贈送您100積分！您的會員卡號爲："+member.getCardId());
}

//查詢積分
public void showScore(){
Member member=new Member();
System.out.print("請輸入您的會員卡號：");
member.setCardId(input.nextInt());
System.out.print("請輸入您的會員卡密碼：");
member.setPassword(input.next());
if((member=hasMember(member))!=null){
System.out.println("姓名\t\t會員卡號\t\t剩餘積分\t\t開卡日期");
System.out.println(member.getName()+"\t\t"+member.getCardId()+"\t"+member.getScore()+"\t\t"+member.getRegistDate());
}else{
System.out.println("您輸入的會員卡號或密碼錯誤，沒法查詢積分！");
}
}
}

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測試類

public class Test {
public static void main(String[] args) {
MemberDao dao=new MemberDao();
dao.start();
}
}