Java模拟银行业务系统

package com.xu_six;import java.io.Serializable;/*** 用户类* @author XuSir*2021年3月27日上午10:01:16*/
public class User implements Serializable{/*** */private static final long serialVersionUID = 1L;
//  用户的属性;必须私有化private String userName; //用户名private String userId;     //用户身份IDprivate String sex;         //性别private int age;            //年龄private String address;     //居住地址private String account;       //银行账号private String tel;           //预留电话private String passWord;  //取款密码private double banlance;  //账户余额//    提供外界获取属性的方法public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getUserId() {return userId;}public void setUserId(String userId) {this.userId = userId;}public String getSex() {return sex;}public void setSex(String sex) {this.sex = sex;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}public String getAccount() {return account;}public void setAccount(String account) {this.account = account;}public String getTel() {return tel;}public void setTel(String tel) {this.tel = tel;}public String getPassWord() {return passWord;}public void setPassWord(String passWord) {this.passWord = passWord;}public double getBanlance() {return banlance;}public void setBanlance(double banlance) {this.banlance = banlance;}public User() {// TODO Auto-generated constructor stub
}
public User(String userName, String userId, String sex,int age, String address,String account, String tel,String passWord, double banlance) {super();this.userName = userName;this.userId = userId;this.sex = sex;this.age = age;this.address = address;this.account = account;this.tel = tel;this.passWord = passWord;this.banlance = banlance;
}
@Override
public int hashCode() {final int prime = 31;int result = 1;result = prime * result + ((account == null) ? 0 : account.hashCode());result = prime * result + ((userId == null) ? 0 : userId.hashCode());result = prime * result + ((userName == null) ? 0 : userName.hashCode());return result;
}
@Override
public boolean equals(Object obj) {if (this == obj)return true;if (obj == null)return false;if (getClass() != obj.getClass())return false;User other = (User) obj;if (account == null) {if (other.account != null)return false;} else if (!account.equals(other.account))return false;if (userId == null) {if (other.userId != null)return false;} else if (!userId.equals(other.userId))return false;if (userName == null) {if (other.userName != null)return false;} else if (!userName.equals(other.userName))return false;return true;
}}

package com.xu_six;import java.util.Iterator;/*** 银行类* @author XuSir*2021年3月27日下午12:13:05*/public class Bank {//  属性String bankname="发财银行";
//  私有化银行类private  Bank() {};private static Bank BANK=new Bank();public static Bank getBank() {return BANK;}
//  存款功能public void savemoney(User user,double money) {if (money>0) {user.setBanlance(user.getBanlance()+money);System.out.println("存款成功！");System.out.println();}else {System.out.println("金额输入有误！");}}
//  取款功能public void drawmoney(User user,double money,String password) {if (money<=user.getBanlance()&&user.getPassWord().equals(password)) {user.setBanlance(user.getBanlance()-money);System.out.println("取款成功！");System.out.println();}else {System.out.println("余额不足！！！");}}
//  查询余额功能public void lookmoney(User user) {System.out.println("您的当前可用余额为：");System.out.println(user.getBanlance()+":RMB"); }
//  转账功能public void transfermoney(User user,String account,double money,String password) {Iterator<User> it = Data.getData().getHolder().iterator();while (it.hasNext()) {User user2 = (User)it.next();if (user2.getAccount().equals(account)&&money<=user.getBanlance()&&user.getPassWord().equals(password)) {System.out.println("转账成功！");user2.setBanlance(user2.getBanlance()+money);user.setBanlance(user.getBanlance()-money);return;}}System.out.println("您输入的账户不存在或密码输入错误！");}}

package com.xu_six;
/*** 银行数据库* @author XuSir*2021年3月27日下午2:15:42*/import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Iterator;
import java.util.TreeSet;public class Data {// 模拟一个数据库用来保存用户信息private TreeSet<User> holder = new TreeSet<>(new MyComparator());// 私有化数据库private static Data DATA = new Data();private Data() {};public static Data getData() {return DATA;}// 写入用户public void savefile(TreeSet<User> holder) {File file = new File("D:\\Date\\bankFile");ObjectOutputStream oo = null;try {if (!file.exists()) {file.mkdirs();}oo=new ObjectOutputStream(new FileOutputStream("D:\\Date\\bankFile\\file.txt")) ;oo.writeObject(holder);} catch (Exception e) {// TODO: handle exception}finally {try {oo.close();} catch (Exception e2) {// TODO: handle exception}}}
//  读取用户@SuppressWarnings("unchecked")public TreeSet<User> readfile() {ObjectInputStream oo=null;try {oo=new ObjectInputStream(new FileInputStream("D:\\Date\\bankFile\\file.txt"));holder =(TreeSet<User>) oo.readObject();} catch (Exception e) {// TODO: handle exception}finally {try {oo.close();} catch (Exception e2) {// TODO: handle exception}}return holder;}
//  删除用户public void removeuser(String name,String id) {Iterator<User> it = holder.iterator();while (it.hasNext()) {User user =(User)it.next();if (user.getUserName().equals(name)&&user.getUserId().equals(id)) {holder.remove(user);System.out.println("注销成功");return;}}System.out.println("注销失败！（未查找到该用户）");}public TreeSet<User> getHolder() {return holder;}public void setHolder(TreeSet<User> holder) {this.holder = holder;}}

package com.xu_six;
/*** 自定义比较器*/
import java.io.Serializable;
import java.util.Comparator;public class MyComparator implements Comparator<User>,Serializable{private static final long serialVersionUID = 1L;@Overridepublic int compare(User o1, User o2) {return o1.getUserName().compareTo(o2.getUserName());}}

package com.xu_six;
/*** 后台操作系统* @author XuSir*2021年3月27日下午6:49:42*/import java.util.Iterator;
import java.util.Scanner;
import java.util.TreeSet;public class Operate {Scanner sc = new Scanner(System.in);// 用户登录界面public void registermenu() {Data.getData().setHolder(Data.getData().readfile());System.out.println("***************" + Bank.getBank().bankname + "欢迎您！***************");System.out.println("               ☟请您按提示操作！");while (true) {System.out.println(                   );System.out.println("        ①登录        ②开户        ③注销        0退出");System.out.println("------------------------------------------------");int key = sc.nextInt();switch (key) {case 1:System.out.println("请输入姓名！");String name1 = sc.next();System.out.println("请输入身份证号！");String id1 = sc.next();logonmenu(Data.getData().getHolder(), name1, id1);break;case 2:logon();break;case 3:System.out.println("请输入您的姓名");String name = sc.next();System.out.println("请输入您的身份证号");String id = sc.next();Data.getData().removeuser(name, id);break;case 0:System.out.println("谢谢使用！");System.out.println("祝您生活愉快！");Data.getData().savefile(Data.getData().getHolder());return;}}}// 开户public void logon() {System.out.println("********欢迎来到注册页面！********");User user = new User();while (true) {switch (1) {case 1:System.out.println("请输入姓名！");String name = sc.next();String regex = "[a-zA-Z\u4e00-\u9fa5]{2,6}";if (!name.matches(regex)) {System.out.println("输入不符合规范！（只能包含英文，中文[2到6位]");break;}user.setUserName(name);case 2:System.out.println("请输入身份证号！");String id = sc.next();regex = "[a-zA-Z0-9]{18}";if (!id.matches(regex)) {System.out.println("输入不符合规范！[身份证号应为：18位]");break;}user.setUserId(id);case 3:System.out.println("请输入性别");String sex = sc.next();regex = "[\u4e00-\u9fa5]{1}";if (!sex.matches(regex)) {System.out.println("输入有误！");break;}user.setSex(sex);case 4:System.out.println("请输入年龄");int age = sc.nextInt();if (age <= 0 || age > 120) {System.out.println("年龄不合法！");break;}user.setAge(age);case 5:System.out.println("请输入居住地址");String address = sc.next();if (address == null) {System.out.println("不能为空！");break;}user.setAddress(address);case 6:System.out.println("请设置您的银行账号！");System.out.println("请输入：【9位数字】");String account = sc.next();regex = "[0-9]{9}";if (!account.matches(regex)) {System.out.println("输入有误！");break;}user.setAccount(account);case 7:System.out.println("请设置您的密码！");System.out.println("请输入【6位数字】密码");String password = sc.next();regex = "[0-9]{6}";if (!password.matches(regex)) {System.out.println("输入有误！");break;}user.setPassWord(password);case 8:System.out.println("请输入您的手机号！");String tl = sc.next();regex = "[0-9]{11}";if (!tl.matches(regex)) {System.out.println("输入有误！");break;}case 9:System.out.println("请输入您要存入的金额！");double balance = sc.nextDouble();if (balance < 0) {System.out.println("输入有误！");break;}user.setBanlance(balance);case 10:if (!Data.getData().getHolder().contains(user)) {Data.getData().getHolder().add(user);System.out.println("注册成功！");return;}else {System.out.println("注册失败！用户已存在！请检查您的名字、身份证号、银行卡号");}}break;}}// 登录界面public void logonmenu(TreeSet<User> holder, String name, String id) {Iterator<User> it = holder.iterator();while (it.hasNext()) {User user = (User) it.next();if (user.getUserName().equals(name) && user.getUserId().equals(id)) {System.out.println("验证成功！");System.out.println("please white moment...");System.out.println("正在跳转到系统菜单......");menu(user);return;} }System.out.println("登录失败！");System.out.println("请您重试！");}// 菜单界面public void menu(User user) {try {Thread.sleep(5000);} catch (Exception e) {// TODO: handle exception}System.out.println("               欢迎来到系统菜单界面！");System.out.println("*****************************************************");while (true) {System.out.println("        ①存款        ②取款        ③转账        ④查询余额        ⑤修改密码        0返回");System.out.println("--------------------------------------------------------");int key =sc.nextInt();switch (key) {case 1:System.out.println("请输入存款金额！");double money=sc.nextDouble();Bank.getBank().savemoney(user, money);break;case 2:System.out.println("请输入取款金额！");double deawmoney=sc.nextDouble();System.out.println("请输入取款密码！");String password=sc.next();Bank.getBank().drawmoney(user, deawmoney,password);break;case 3:System.out.println("请输入您要转入的账号");String account=sc.next();System.out.println("请输入转入金额！");double money1=sc.nextDouble();System.out.println("请输入密码！");String password1=sc.next();Bank.getBank().transfermoney(user, account, money1, password1);break;case 4:Bank.getBank().lookmoney(user);break;case 5:System.out.println("请输入账号！");String account1 =sc.next();System.out.println("请输入原密码！");String password11 =sc.next();oo(Data.getData().getHolder(),account1, password11);break;case 0:return;}}}
//  修改密码public void oo(TreeSet<User> holder,String account ,String password) {Iterator<User> it = holder.iterator();while(it.hasNext()) {User user = (User)it.next();if (user.getAccount().equals(account)&&user.getPassWord().equals(password)) {System.out.println("请输入新密码");String password1=sc.next();String regex="[0-9]{6}";if (!password1.matches(regex)) {System.out.println("密码格式有误！");return;}user.setPassWord(password1);System.out.println("密码修改成功！");return;}}System.out.println("密码或账号输入有误！！");}}

package com.xu_six;
//  测试类
public class Test {public static void main(String[] args) {Operate operate = new Operate();operate.registermenu();}}

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