/**
*
*/
import java.util.Scanner;//导入一个外部的java类
import java.text.SimpleDateFormat;
import java.util.Scanner;//导入一个有关日期的java类
public class Login {
public static void main(String [] args) {
String username0 = "admin";
String password0 = "1111";//定义变量存放默认的用户名和密码
int loginIndex = 0;//定义一个变量,存放用户登录的次数
String [] name = new String[10];//定义存放10个客户姓名的数组变量
name[0] = "小猫";
name[1] = "小狗";
name[2] = "小马";
name[3] = "小狐狸";
name[4] = "大象";
int [] number = new int[10];//定义一个存放10个客户编号的数组变量
number[0] = 1001;
number[1] = 1002;
number[2] = 1003;
number[3] = 1004;
number[4] = 1005;
String [] birthday = new String[10];//定义一个存放10个客户出生年月日的数组变量
birthday[0] = "1992-07-10";
birthday[1] = "1992-06-17";
birthday[2] = "1992-07-10";
birthday[3] = "1992-11-01";
birthday[4] = "1992-11-17";
String [] date = new String[5];//定义一个存放客户生日的数组变量
date[0] = "07-10";
date[1] = "06-17";
date[2] = "07-10";
date[3] = "11-01";
date[4] = "11-17";
int [] num = new int[10];//定义一个存放10个客户积分的数组变量
num[0] = 20000;
num[1] = 25000;
num[2] = 30000;
num[3] = 10000;
num[4] = 10000;
first:
while(true) {//用于返回上一级
//展示登录菜单
System.out.println("\t\t\t欢迎使用我行我素购物管理系统1.0版");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ");
System.out.println("\t\t\t1.登录系统");
System.out.println("\t\t\t2.更改管理员密码");
System.out.println("\t\t\t3.退出");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ");
//提示用户输入选项
System.out.print("请输入您的选择:");
Scanner input = new Scanner(System.in);
second:
while(true){//输入上面选项的循环
int choice1 = input.nextInt();
//判断用户输入选项是否正确
if(choice1 == 1) {/*登录系统*/
/*用户输入登录,如果登录失败,继续重新登录,失败次数超过三次,退出系统*/
third:
while(true) {
//登录系统要实现的功能:提示用户输入用户名和密码
System.out.println("请输入用户名:");
String username = input.next();
System.out.println("请输入密码:");
String password = input.next();
//判断用户输入的用户名是否admin,密码是否1111
/*整数判断可以用==;字符串是否相等用equals*/
if((username0).equals(username)&&(password0).equals(password)) {
System.out.println("登录成功!");
break;//退出循环
} else {
loginIndex ++;
if(loginIndex > 2) {
System.out.println("输入次数超过三次;系统即将退出...");
System.exit(1);
}
System.out.println("您输入的用户名和密码错误,您还有" + (3 - loginIndex) + "次机会重新输入");
}
}//登录成功
fourth:
while(true){
System.out.println("\t\t\t欢迎使用我行我素购物管理系统");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
System.out.println("\t\t\t1.客户信息管理");
System.out.println("\t\t\t2.购物结算");
System.out.println("\t\t\t3.真情回馈");
System.out.println("\t\t\t4.返回上一级");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
System.out.println("请输入您的选择:");
fifth:
while(true) {//对用户输入的选项的判断
int choice2 = input.nextInt();
if(choice2 == 1) {//客户信息管理
sixth:
while(true) {
int choice3;
System.out.println("我行我素购物管理系统 > 客户信息管理");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
System.out.println("\t\t\t1.显示所有客户信息");
System.out.println("\t\t\t2.添加客户信息");
System.out.println("\t\t\t3.修改客户信息");
System.out.println("\t\t\t4.查询客户信息");
System.out.println("\t\t\t5.返回上一级");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
System.out.println("请输入您的选择:");
seventh:
while(true) {//对输入选项的判断
choice3 = input.nextInt();
if(choice3 == 1) {//显示所有客户信息
System.out.println("客户编号\t\t客户姓名\t\t客户生日\t\t客户积分");
for(int i = 0;i <= name.length;i++) {
System.out.println(number[i] + "\t\t" + name[i] + "\t\t" + birthday[i] + "\t\t" + num[i]);
}
break;
} else if(choice3 == 2) {//添加客户信息
System.out.println("欢迎添加客户!");
System.out.println("请输入新客户的名称(2-8个字符):");
String newname = input.next();
System.out.println("请输入新客户的生日(格式:yyyy-mm-dd):");
String newbirthday = input.next();
System.out.println("请输入新客户的积分:");
int newnum = input.nextInt();
System.out.println("添加成功!");
break fifth;
} else if(choice3 == 3) {//修改客户信息
System.out.println("请输入你要修改的客户编号:");
int number0 = input.nextInt();
for(int k = 1;k <= number.length;k++){
if(number0 == number[k]){
System.out.println("客户编号\t\t客户姓名\t\t客户生日\t\t客户积分");
System.out.println(number[k] + "\t\t" + name[k] + "\t\t" + birthday[k] + "\t\t" + num[k]);
}
System.out.println("请选择你要修改的内容:1.姓名\t\t2.生日");
System.out.println("请输入你的选择:");
int choose = input.nextInt();
if(choose == 1){
System.out.println("请输入新的客户名称:");
String newname0 = input.next();
System.out.println("修改成功");
}else if(choose == 2){
System.out.println("请输入新的客户生日:");
String newbirthday0 = input.next();
System.out.println("修改成功");
}
}
break fifth;
} else if(choice3 == 4) {//查询客户信息
System.out.println("请输入你要查询的客户编号:");
int number1 = input.nextInt();
for(int j = 1;j <= number.length;j++){
if(number1 == number[j]){
System.out.println("客户编号\t\t客户姓名\t\t客户生日\t\t客户积分");
System.out.println(number[j] + "\t\t" + name[j] + "\t\t" + birthday[j] + "\t\t" + num[j]);
}
else{
System.out.println("你要查询的客户编号不存在:");
}
break;
}
break;
} else if(choice3 == 5) {
//返回上一级
break fifth;
} else {
System.out.println("输入有误,请重新输入!");
}
}//循环结束
if(choice3 != 5) {
System.out.println("请输入任意键继续:");
break ;
}
}//循环结束
break fifth;
} else if(choice2 == 2) {//购物结算
System.out.println("欢迎进入购物系统!");
System.out.println("请输入您的客户编号:");
String name1 = null;
int y = 0;
while(true){
y = 0;
int number1 = input.nextInt();
while(true){
if(number1 == number[y]) {
name1 = name[y];
break;
}
y++;
if(y > number.length){
System.out.println("您输入的标号错误,请重新输入!");
break;
}
}
if(y <= number.length){
break;
}
}
System.out.println("商城现有商品如下:");
System.out.println("商品编号\t\t商品名称\t\t商品价格");
System.out.println("1\t\t\t云南白药\t\t¥18.00");
System.out.println("2\t\t\t小米手机\t\t¥1,998.00");
System.out.println("3\t\t\t小黑\t\t\t¥4,998.00");
System.out.println("4\t\t\t拖鞋\t\t\t¥25.80");
System.out.println("5\t\t\t酱油\t\t\t¥5.60");
System.out.println("6\t\t\t汽车模型\t\t¥350.00");
System.out.println("7\t\t\t坦克模型\t\t¥400.00");
System.out.println("8\t\t\t玩具枪\t\t¥99.80");
System.out.print("请输入您要购买的产品编号:");
int choice4 = input.nextInt();
System.out.print("请输入您要购买的产品数量:");
int choice5 = input.nextInt();
double sum = 0;
double a = 0;
String str = null;
switch (choice4) {
case 1:
sum = choice5 * 18;
a = 18;
str = "云南白药";
break;
case 2:
sum = choice5 * 1998;
a = 1998;
str = "小米手机";
break;
case 3:
sum = choice5 * 4998;
a = 4998;
str = "小黑";
break;
case 4:
sum = choice5 * 25.8;
a = 25.8;
str = "拖鞋";
break;
case 5:
sum = choice5 * 5.6;
a = 5.6;
str = "酱油";
break;
case 6:
sum = choice5 * 350;
a = 350;
str = "汽车模型";
break;
case 7:
sum = choice5 * 400;
a = 400;
str = "坦克模型";
break;
case 8:
sum = choice5 * 99.8;
a = 99.8;
str = "玩具枪";
break;
default:
break;
}
System.out.println("尊敬的用户:" + name1);
System.out.println("产品名称\t\t产品单价\t\t购买数量");
System.out.println(str + "\t\t" + a +"\t\t\t" + choice5);
System.out.println("您购买的产品总价为:¥" + sum);
System.out.println("按您当前的积分,您的折扣是:0.85");
double b;
b = 0.85 * sum;
System.out.println("您的应付款为:¥" + (float)b);
System.out.print("请付款:");
while(true) {//付款成功的循环
int x = input.nextInt();
if(x < sum){
System.out.println("付款错误,请重新付款!");
} else {
System.out.println("付款成功!");
System.out.println("找零:¥" + (float)(x - b));
System.out.println("欢迎下次光临!");
break;
}
}//循环结束
System.out.println("请按任意键继续:");
String str2 = input.next();
break fifth;
} else if(choice2 == 3) {/*真情回馈*/
one:
while(true) {
int choice6;
System.out.println("我行我素购物管理系统 > 真情回馈");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
System.out.println("\t\t\t1.幸运大放送");
System.out.println("\t\t\t2.幸运抽奖");
System.out.println("\t\t\t3.生日问候");
System.out.println("\t\t\t4.返回上一级");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
System.out.println("请输入您的选择:");
two:
while(true) {//对输入选项的判断
choice6 = input.nextInt();
if(choice6 == 1) {//幸运大放送
System.out.println("获得最高积分的客户是:");
System.out.println("客户编号\t\t客户姓名\t\t客户生日\t\t客户积分");
System.out.println(number[2] + "\t\t" + name[2] + "\t\t" + birthday[2] + "\t\t" + num[2]);
System.out.println("恭喜以上用户,获得一个价值¥50.00的充值卡");
System.out.println("请按任意键继续:");
}else if(choice6 ==2 ){//幸运抽奖
System.out.println("幸运客户是:");
System.out.println("客户编号\t\t客户姓名\t\t客户生日\t\t客户积分");
System.out.println(number[2] + "\t\t" + name[2] + "\t\t" + birthday[2] + "\t\t" + num[2]);
System.out.println("恭喜以上用户,获得一个价值¥5,888,00的Iphone5s");
System.out.println("请按任意键继续:");
}else if(choice6 == 3){//生日问候
String today = "04-09";
for(int m = 0;m < birthday.length;m++){
if((today).equals(date[m])){
System.out.println("尊敬的客户,生日快乐!:");
System.out.println("恭喜你获得生日贺卡!:");
}
else{
System.out.println("对不起,今天没有过生日的客户!:");
}
System.out.println("请按任意键继续!");
break ;
}
}else if(choice6 == 4){//返回上一级
break fifth;
}else{//提示输入错误,重新输入
System.out.println("输入错误,请重新输入");
break;
}
}
if(choice6 != 4) {
System.out.println("请输入任意键继续:");
continue ;
}
}
} else if(choice2 == 4) {//返回上一级
break second;
} else{//提示输入错误,重新输入
System.out.println("输入错误,请重新输入");
break;
}
}
}//输入选项的循环
} else if(choice1 == 2) {/*更改管理员密码*/
while(true) {
System.out.println("请输入用户名:");
String usename = input.next();
System.out.println("请输入密码:");
String password = input.next();
if((username0).equals(usename)&&(password0).equals(password)) {
System.out.println("请输入新密码:");
String newname = input.next();
System.out.println("请确认新密码:");
String newpass = input.next();
if(newname.equals(newpass)){
System.out.println("恭喜你,修改密码成功!");
System.out.println("按任意键继续");
}
} else {
loginIndex ++;
if(loginIndex > 2) {
System.out.println("输入次数超过三次;系统即将退出...");
System.exit(1);
}
System.out.println("您输入的用户名和密码错误,您还有" + (3 - loginIndex) + "次机会重新输入");
}
break second;
}//修改密码成功
} else if(choice1 == 3) {/*退出系统*/
System.out.println("系统即将退出....");
System.exit(1);
} else {/*提示用户输入错误,请重新输入*/
System.out.println("输入有误,请重新输入:");
}
}//输入选项的循环
}//登录菜单
}
}
购物系统项目
最新推荐文章于 2025-02-04 15:57:32 发布