银行存取系统模拟

/*
 *细节不完善，先存一下
 */

  1 package com;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Scanner;

public class BankMain {
    public static void show() {
        System.out.println("--------欢迎使用xx银行系统--------");
        System.out.println("1、开户");
        System.out.println("2、存款");
        System.out.println("3、查询");
        System.out.println("4、取款");
        System.out.println("5、修改管理员密码");
        System.out.println("0、退出");
    }

    // -- 系统初始化，提供管理员账户密码。
    static {
        File f1 = new File(".", "db");
        File f2 = new File("./db/", "user.db");
        File f3 = new File("./db/", "dat.db");
        if (f1.exists() && f2.exists() && f3.exists()) {
        } else {
            System.out.println("系统正在初始化...");
            try {
                f1.mkdirs();
                f2.createNewFile();
                f3.createNewFile();
                Properties p = new Properties();
                p.load(new FileInputStream(f2));
                p.setProperty("name", "admin");
                p.setProperty("pass", "123");
                p.store(new FileWriter(f2), "");
                Thread.sleep(2000);
                System.out.println("初始化完成,默认的登录账号是:admin,密码:123，请修改密码");
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {

        // -- 开始操作
        while (true) {
            show();
            String in01 = Demo.scanner("请输入操作：");
            if (in01.equals("1")|| in01.equals("5")) {
                int num = 0;
                while (true) {
                    num++;
                    String admin = Demo.scanner("请输入管理员帐号：");
                    String pass = Demo.scanner("请输入密码：");
                    if (Demo.checkadmin(admin, pass)) {
                        System.out.println("登陆成功");
                        if(in01.equals("1")){
                            System.out.println("欢迎使用开户功能！");
                            String name = Demo.scanner("请输入姓名：");
                            String sfz = Demo.scanner("请输入身份证号：");
                            String mm = Demo.scanner("请输入密码：");
                            System.out.println("请输入存款金额");
                            Scanner in = new Scanner(System.in);
                            int money =in.nextInt(); 
                            Account a = new Account(name, sfz, mm, money);
                            Map<String, Account> map = Demo.read();
                            map.put(a.getCard(), a);
                            Demo.save(map);
                            System.out.println("您的卡号为：" + a.getCard());
                            break;
                        }else{
                            System.out.println("进入修改密码页面！");
                            String passnew = Demo.scanner("请输入新密码：");
                            try {
                                Properties p = new Properties();
                                p.load(new FileInputStream("./db/user.db"));
                                p.setProperty("name", "admin");
                                p.setProperty("pass", passnew);
                                p.store(new FileWriter("./db/user.db"), "");
                                System.out.println("修改密码成功，新密码为："+passnew);
                            } catch (IOException e) {
                                e.printStackTrace();
                            }
                            
                            break;
                        }
                    } else {
                        System.out.println("密码错误，请重新输入！");
                        if (num >= 3) {
                            System.out.println("密码输入错误3次，系统退出！");
                            System.exit(0);
                        }
                    }
                }
            } else if (in01.equals("2") || in01.equals("3") || in01.equals("4") ) {
                int numuser = 0;
                while (true) {
                    numuser++;
                    System.out.println("请登录：");
                    String zh = Demo.scanner("请输入帐号：");
                    String mm = Demo.scanner("请输入密码");
                    Map<String, Account> sys = Demo.read();
                    Account aa = sys.get(zh);
                    if (aa != null) {
                        if (mm.equals(aa.getMm())) {
                            System.out.println("登陆成功");
                            if (in01.equals("2")) {
                                System.out.println("进入存款页面！");
                                System.out.println("请输入存款金额：");
                                Scanner in = new Scanner(System.in);
                                int moneyset = in.nextInt();
                                int money = aa.getMoney();
                                money = moneyset + money;
                                String nameset = aa.getName();
                                String sfzset = aa.getSfz();
                                String mmset = aa.getMm();
                                Account b = new Account(nameset,sfzset,mmset,money);
                                sys.put(zh, b);
                                Demo.save(sys);
                                System.out.println("成功存入"+moneyset+"块钱!");
                                break;
                            } else if (in01.equals("3")) {
                                System.out.println("进入查询页面！");
                                Account.show(zh);
                                
                                break;
                            } else {
                                System.out.println("进入取款页面！");
                                System.out.println("请输入取款金额：");
                                Scanner in = new Scanner(System.in);
                                int moneyput = in.nextInt();
                                int money = aa.getMoney();
                                money = money - moneyput;
                                String nameset = aa.getName();
                                String sfzset = aa.getSfz();
                                String mmset = aa.getMm();
                                Account b = new Account(nameset,sfzset,mmset,money);
                                sys.put(zh, b);
                                Demo.save(sys);
                                System.out.println("成功取出"+moneyput+"块钱!");
                                break;
                            } 
                        } else {
                            System.out.println("密码输入错误！");
                            if (numuser >= 3) {
                                System.out.println("密码输入错误3次，系统退出！");
                                System.exit(0);
                            }
                        }
                    } else {
                        System.out.println("卡号错误，请重新输入!!!！");
                    }
                }
            } else if (in01.equals("0")) {
                System.out.println("谢谢使用，系统结束！");
                System.exit(0);
            } else {
                System.out.println("输入错误，请重新输入！");
            }
        }
    }
}
 

package com;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;

public class Account implements Serializable {
    private String name;
    private String sfz;
    private String mm;
    private String card;
    private int money;
    
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSfz() {
        return sfz;
    }

    public void setSfz(String sfz) {
        this.sfz = sfz;
    }

    public String getMm() {
        return mm;
    }

    public void setMm(String mm) {
        this.mm = mm;
    }

    public String getCard() {
        return card;
    }

    public void setCard(String card) {
        this.card = card;
    }

    public int getMoney() {
        return money;
    }

    public void setMoney(int money) {
        this.money = money;
    }

    public Account(String name, String sfz, String mm,int money) {
        super();
        this.name = name;
        this.sfz = sfz;
        this.mm = mm;
        this.money = money;
        Random r = new Random();
        int cardnum = r.nextInt(89999)+10000;
        this.card = cardnum+"";
        
    }
    public Account() {
        super();
        // TODO Auto-generated constructor stub
    }

    public static void show(String zhz) {
        Map<String,Account> sys = Demo.read();
        Account a = sys.get(zhz);
        System.out.println("您的姓名为："+a.getName());
        System.out.println("您的帐号为："+zhz);
        System.out.println("您的密码为："+a.getMm());
        System.out.println("您的余额为："+a.getMoney()+"元");
    }
    
}


package com;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Random;
import java.util.Scanner;

public class Demo {

    public static String scanner(String string) {
        Scanner in = new Scanner(System.in);
        System.out.println(string);
        String inputs = in.next();
        return inputs;
    }
    

    
    public static boolean checkadmin(String admin, String pass) {
        boolean flag = false;
        try {
            Properties p = new Properties();
            p.load(new FileInputStream("./db/user.db"));
            if (admin.equals(p.getProperty("name")) && pass.equals(p.getProperty("pass"))) {
                flag = true;
            }
        } catch (Exception e) {

            e.printStackTrace();
        }
        return flag;
    }

    public static boolean check(String zh, String mm) {
        boolean flag = false;
        try {
            Map<String, Account> sys = new HashMap<String, Account>();
            FileInputStream fis = new FileInputStream("./db/dat.db");
            ObjectInputStream ois = new ObjectInputStream(fis);
            sys = (Map<String, Account>) ois.readObject();
            ois.close();
            Account aa1 = sys.get(zh);
            if (sys.get(zh) != null && mm.equals(aa1.getMm())) {
                flag = true;
            }
        } catch (Exception e) {

            e.printStackTrace();
        }
        return flag;
    }

    public static Map<String, Account> read() {
        Map<String, Account> sys = new HashMap<String, Account>();

        try {
            FileInputStream fis = new FileInputStream("./db/dat.db");
            ObjectInputStream ois = new ObjectInputStream(fis);
            sys = (HashMap<String, Account>) ois.readObject();
            ois.close();
        } catch (Exception e) {
            
        }

        return sys;
    }

    public static void save(Map<String, Account> sys) {
        try {
            
            FileOutputStream fos = new FileOutputStream("./db/dat.db");
            ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeObject(sys);
            oos.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}