银行存取系统模拟

最新推荐文章于 2024-01-31 17:39:22 发布
转载最新推荐文章于 2024-01-31 17:39:22 发布 · 186 阅读
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原文链接：http://www.cnblogs.com/fxx930101/p/5408379.html
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#java
/*
 *细节不完善，先存一下
 */

  1 package com;
  2 
  3 import java.io.File;
  4 import java.io.FileInputStream;
  5 import java.io.FileNotFoundException;
  6 import java.io.FileOutputStream;
  7 import java.io.FileWriter;
  8 import java.io.IOException;
  9 import java.io.ObjectInputStream;
 10 import java.io.ObjectOutputStream;
 11 import java.util.HashMap;
 12 import java.util.Map;
 13 import java.util.Properties;
 14 import java.util.Scanner;
 15 
 16 public class BankMain {
 17     public static void show() {
 18         System.out.println("--------欢迎使用xx银行系统--------");
 19         System.out.println("1、开户");
 20         System.out.println("2、存款");
 21         System.out.println("3、查询");
 22         System.out.println("4、取款");
 23         System.out.println("5、修改管理员密码");
 24         System.out.println("0、退出");
 25     }
 26 
 27     // -- 系统初始化，提供管理员账户密码。
 28     static {
 29         File f1 = new File(".", "db");
 30         File f2 = new File("./db/", "user.db");
 31         File f3 = new File("./db/", "dat.db");
 32         if (f1.exists() && f2.exists() && f3.exists()) {
 33         } else {
 34             System.out.println("系统正在初始化...");
 35             try {
 36                 f1.mkdirs();
 37                 f2.createNewFile();
 38                 f3.createNewFile();
 39                 Properties p = new Properties();
 40                 p.load(new FileInputStream(f2));
 41                 p.setProperty("name", "admin");
 42                 p.setProperty("pass", "123");
 43                 p.store(new FileWriter(f2), "");
 44                 Thread.sleep(2000);
 45                 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");
 46             } catch (Exception e) {
 47                 e.printStackTrace();
 48             }
 49         }
 50     }
 51 
 52     public static void main(String[] args) {
 53 
 54         // -- 开始操作
 55         while (true) {
 56             show();
 57             String in01 = Demo.scanner("请输入操作：");
 58             if (in01.equals("1")|| in01.equals("5")) {
 59                 int num = 0;
 60                 while (true) {
 61                     num++;
 62                     String admin = Demo.scanner("请输入管理员帐号：");
 63                     String pass = Demo.scanner("请输入密码：");
 64                     if (Demo.checkadmin(admin, pass)) {
 65                         System.out.println("登陆成功");
 66                         if(in01.equals("1")){
 67                             System.out.println("欢迎使用开户功能！");
 68                             String name = Demo.scanner("请输入姓名：");
 69                             String sfz = Demo.scanner("请输入身份证号：");
 70                             String mm = Demo.scanner("请输入密码：");
 71                             System.out.println("请输入存款金额");
 72                             Scanner in = new Scanner(System.in);
 73                             int money =in.nextInt(); 
 74                             Account a = new Account(name, sfz, mm, money);
 75                             Map<String, Account> map = Demo.read();
 76                             map.put(a.getCard(), a);
 77                             Demo.save(map);
 78                             System.out.println("您的卡号为：" + a.getCard());
 79                             break;
 80                         }else{
 81                             System.out.println("进入修改密码页面！");
 82                             String passnew = Demo.scanner("请输入新密码：");
 83                             try {
 84                                 Properties p = new Properties();
 85                                 p.load(new FileInputStream("./db/user.db"));
 86                                 p.setProperty("name", "admin");
 87                                 p.setProperty("pass", passnew);
 88                                 p.store(new FileWriter("./db/user.db"), "");
 89                                 System.out.println("修改密码成功，新密码为："+passnew);
 90                             } catch (IOException e) {
 91                                 e.printStackTrace();
 92                             }
 93                             
 94                             break;
 95                         }
 96                     } else {
 97                         System.out.println("密码错误，请重新输入！");
 98                         if (num >= 3) {
 99                             System.out.println("密码输入错误3次，系统退出！");
100                             System.exit(0);
101                         }
102                     }
103                 }
104             } else if (in01.equals("2") || in01.equals("3") || in01.equals("4") ) {
105                 int numuser = 0;
106                 while (true) {
107                     numuser++;
108                     System.out.println("请登录：");
109                     String zh = Demo.scanner("请输入帐号：");
110                     String mm = Demo.scanner("请输入密码");
111                     Map<String, Account> sys = Demo.read();
112                     Account aa = sys.get(zh);
113                     if (aa != null) {
114                         if (mm.equals(aa.getMm())) {
115                             System.out.println("登陆成功");
116                             if (in01.equals("2")) {
117                                 System.out.println("进入存款页面！");
118                                 System.out.println("请输入存款金额：");
119                                 Scanner in = new Scanner(System.in);
120                                 int moneyset = in.nextInt();
121                                 int money = aa.getMoney();
122                                 money = moneyset + money;
123                                 String nameset = aa.getName();
124                                 String sfzset = aa.getSfz();
125                                 String mmset = aa.getMm();
126                                 Account b = new Account(nameset,sfzset,mmset,money);
127                                 sys.put(zh, b);
128                                 Demo.save(sys);
129                                 System.out.println("成功存入"+moneyset+"块钱!");
130                                 break;
131                             } else if (in01.equals("3")) {
132                                 System.out.println("进入查询页面！");
133                                 Account.show(zh);
134                                 
135                                 break;
136                             } else {
137                                 System.out.println("进入取款页面！");
138                                 System.out.println("请输入取款金额：");
139                                 Scanner in = new Scanner(System.in);
140                                 int moneyput = in.nextInt();
141                                 int money = aa.getMoney();
142                                 money = money - moneyput;
143                                 String nameset = aa.getName();
144                                 String sfzset = aa.getSfz();
145                                 String mmset = aa.getMm();
146                                 Account b = new Account(nameset,sfzset,mmset,money);
147                                 sys.put(zh, b);
148                                 Demo.save(sys);
149                                 System.out.println("成功取出"+moneyput+"块钱!");
150                                 break;
151                             } 
152                         } else {
153                             System.out.println("密码输入错误！");
154                             if (numuser >= 3) {
155                                 System.out.println("密码输入错误3次，系统退出！");
156                                 System.exit(0);
157                             }
158                         }
159                     } else {
160                         System.out.println("卡号错误，请重新输入!!!！");
161                     }
162                 }
163             } else if (in01.equals("0")) {
164                 System.out.println("谢谢使用，系统结束！");
165                 System.exit(0);
166             } else {
167                 System.out.println("输入错误，请重新输入！");
168             }
169         }
170     }
171 }
172  
173 
174 package com;
175 
176 import java.io.Serializable;
177 import java.util.HashMap;
178 import java.util.Map;
179 import java.util.Random;
180 
181 public class Account implements Serializable {
182     private String name;
183     private String sfz;
184     private String mm;
185     private String card;
186     private int money;
187     
188     public String getName() {
189         return name;
190     }
191 
192     public void setName(String name) {
193         this.name = name;
194     }
195 
196     public String getSfz() {
197         return sfz;
198     }
199 
200     public void setSfz(String sfz) {
201         this.sfz = sfz;
202     }
203 
204     public String getMm() {
205         return mm;
206     }
207 
208     public void setMm(String mm) {
209         this.mm = mm;
210     }
211 
212     public String getCard() {
213         return card;
214     }
215 
216     public void setCard(String card) {
217         this.card = card;
218     }
219 
220     public int getMoney() {
221         return money;
222     }
223 
224     public void setMoney(int money) {
225         this.money = money;
226     }
227 
228     public Account(String name, String sfz, String mm,int money) {
229         super();
230         this.name = name;
231         this.sfz = sfz;
232         this.mm = mm;
233         this.money = money;
234         Random r = new Random();
235         int cardnum = r.nextInt(89999)+10000;
236         this.card = cardnum+"";
237         
238     }
239     public Account() {
240         super();
241         // TODO Auto-generated constructor stub
242     }
243 
244     public static void show(String zhz) {
245         Map<String,Account> sys = Demo.read();
246         Account a = sys.get(zhz);
247         System.out.println("您的姓名为："+a.getName());
248         System.out.println("您的帐号为："+zhz);
249         System.out.println("您的密码为："+a.getMm());
250         System.out.println("您的余额为："+a.getMoney()+"元");
251     }
252     
253 }
254 
255 
256 package com;
257 
258 import java.io.FileInputStream;
259 import java.io.FileNotFoundException;
260 import java.io.FileOutputStream;
261 import java.io.IOException;
262 import java.io.ObjectInputStream;
263 import java.io.ObjectOutputStream;
264 import java.util.HashMap;
265 import java.util.Map;
266 import java.util.Properties;
267 import java.util.Random;
268 import java.util.Scanner;
269 
270 public class Demo {
271 
272     public static String scanner(String string) {
273         Scanner in = new Scanner(System.in);
274         System.out.println(string);
275         String inputs = in.next();
276         return inputs;
277     }
278     
279 
280     
281     public static boolean checkadmin(String admin, String pass) {
282         boolean flag = false;
283         try {
284             Properties p = new Properties();
285             p.load(new FileInputStream("./db/user.db"));
286             if (admin.equals(p.getProperty("name")) && pass.equals(p.getProperty("pass"))) {
287                 flag = true;
288             }
289         } catch (Exception e) {
290 
291             e.printStackTrace();
292         }
293         return flag;
294     }
295 
296     public static boolean check(String zh, String mm) {
297         boolean flag = false;
298         try {
299             Map<String, Account> sys = new HashMap<String, Account>();
300             FileInputStream fis = new FileInputStream("./db/dat.db");
301             ObjectInputStream ois = new ObjectInputStream(fis);
302             sys = (Map<String, Account>) ois.readObject();
303             ois.close();
304             Account aa1 = sys.get(zh);
305             if (sys.get(zh) != null && mm.equals(aa1.getMm())) {
306                 flag = true;
307             }
308         } catch (Exception e) {
309 
310             e.printStackTrace();
311         }
312         return flag;
313     }
314 
315     public static Map<String, Account> read() {
316         Map<String, Account> sys = new HashMap<String, Account>();
317 
318         try {
319             FileInputStream fis = new FileInputStream("./db/dat.db");
320             ObjectInputStream ois = new ObjectInputStream(fis);
321             sys = (HashMap<String, Account>) ois.readObject();
322             ois.close();
323         } catch (Exception e) {
324             
325         }
326 
327         return sys;
328     }
329 
330     public static void save(Map<String, Account> sys) {
331         try {
332             
333             FileOutputStream fos = new FileOutputStream("./db/dat.db");
334             ObjectOutputStream oos = new ObjectOutputStream(fos);
335             oos.writeObject(sys);
336             oos.close();
337         } catch (Exception e) {
338             e.printStackTrace();
339         }
340     }
341 
342 }