7K面试题之银行业务管理

思路：

到银行处理业务的步骤为： 先到取号机取号，服务器叫号，服务，服务完毕

银行服务窗口办理的业务可分为普通业务，快速业务，VIP业务

办理普通业务，快速业务，VIP业务的比例分别为6：3：1；

根据分析转换成JAVA对象

创建一个号码管理，来一个客户往里添加一个号码，服务台处理一个用户，从号码管理器中删除一个号码

创建一个号码管理的机器，里面可以创建VIP业务，快速业务，普通业务相应的号码管理器，并设置get方法取得相应的管理器，由于只有一台机器管理有的业务类型，所以此类为单例的类。

创建一个服务台类，

1、创建一个方法开启服务，当服务器服务开启以后，就可以来一个客户，往相应类型里面添加一个号码。

2、创建每个业务的执行类，传入相应的窗口类型，如果快速窗口和VIP窗口当前没有客户，则等一秒后取普通窗口的客户服务

3、创建一个枚举类型，并设置VIP,快速，普通类型

4、创建一个线程池，并执行while(true)，并判断当前业务类型，让当前服务窗口不间断的服务。

5、创建一个主要调用的类。创建窗口对象，调用开始服务窗口，这时不断的用号码管理器中添加相应业务的号码

6、在主要调用的类中创建普通，快速，VIP窗口，并调用开始办理业务的方法；

 

示例代码：

先创建一个号码管理器

package bank;import java.util.ArrayList;import java.util.List;public class NumManager {private List<Integer> numList = new ArrayList();private int i = 0;public synchronized Integer numAdd() {i++;numList.add(i);return i;}public synchronized Integer removeAdd() {if (numList.size() > 0) {return numList.remove(0);}return null;}}

创建一个号码管理台，管理所有业务的号码管理器

package bank;public class NumControllMachine {NumManager vipNumManager = new NumManager();NumManager expressNumManager = new NumManager();NumManager commonNumManager = new NumManager();public NumManager getVipNumManager() {return vipNumManager;}public NumManager getExpressNumManager() {return expressNumManager;}public NumManager getCommonNumManager() {return commonNumManager;}private NumControllMachine() {}private static NumControllMachine numControlMachine = new NumControllMachine();public static NumControllMachine getInstance() {return numControlMachine;}}

创建一个枚举类型，并创建相应的对象

package bank;public enum BusinessType {COMMON, EXPRESS, VIP;public String toString() {switch (this) {case COMMON:return "普通";case EXPRESS:return "快速";case VIP:return "VIP";default:return null;}};}

创建时间管理类，并建立全局参数（最大服务时间，最短服务时间《快速业务为最短服务时间》）

package bank;public class ServiceTime {public static int MAX_SERVICE_TIME = 6000;public static int MIN_SERVICE_TIME = 1000;}

建立服务窗口类

package bank;import java.util.Random;import java.util.concurrent.Executor;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class ServerWindow {private NumControllMachine numcontrollMachine = NumControllMachine.getInstance();private int windowId;public ServerWindow(int windowId, BusinessType type) {super();this.windowId = windowId;this.type = type;}private BusinessType type;/*

*根据各窗口办理什么业务，调用相应的方法

*/

public void callNum() {Executors.newSingleThreadExecutor().execute(new Runnable() {@Overridepublic void run() {while (true) {switch (type) {case COMMON:commonServer(type);break;case EXPRESS:expressServer(type);break;case VIP:vipServer(type);break;}}}});}public void commonServer(BusinessType type) {Integer removeClicentId = numcontrollMachine.getCommonNumManager().removeAdd();if (removeClicentId == null) {System.out.println(windowId + "号" + type + "窗口没有取到"+ BusinessType.COMMON + "任务，等待1秒");try {Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}} else {try {System.out.println(windowId + "号" + type + "窗口开始为办理"+ BusinessType.COMMON + "业务的" + removeClicentId+ "号客户服务");long startTime = System.currentTimeMillis();int randomTime = ServiceTime.MIN_SERVICE_TIME+ (ServiceTime.MAX_SERVICE_TIME - ServiceTime.MIN_SERVICE_TIME);Thread.sleep(new Random().nextInt(randomTime));long winSerTime = (System.currentTimeMillis() - startTime) / 1000;System.out.println(windowId + "号" + type + "窗口开始为办理"+ BusinessType.COMMON + "业务的" + removeClicentId+ "号客户服务完毕，服务时间为" + winSerTime);} catch (InterruptedException e) {e.printStackTrace();}}}public void expressServer(BusinessType type) {Integer removeClicentId = numcontrollMachine.getExpressNumManager().removeAdd();if (removeClicentId == null) {try {System.out.println(windowId + "号" + type + "窗口没有取到"+ BusinessType.EXPRESS + "任务，等待1秒");Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}commonServer(type);} else {try {System.out.println(windowId + "号" + type + "窗口开始为办理"+ BusinessType.EXPRESS + "业务的" + removeClicentId+ "号客户服务");long startTime = System.currentTimeMillis();Thread.sleep(ServiceTime.MIN_SERVICE_TIME);long winSerTime = (System.currentTimeMillis() - startTime) / 1000;System.out.println(windowId + "号" + type + "窗口开始为办理"+ BusinessType.EXPRESS + "业务的" + removeClicentId+ "号客户服务完毕，服务时间为" + winSerTime);} catch (InterruptedException e) {e.printStackTrace();}}}public void vipServer(BusinessType type) {Integer removeClicentId = numcontrollMachine.getVipNumManager().removeAdd();if (removeClicentId == null) {try {System.out.println(windowId + "号" + type + "窗口没有取到"+ BusinessType.VIP + "任务，等待1秒");Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}commonServer(type);} else {try {System.out.println(windowId + "号" + type + "窗口开始为办理"+ BusinessType.VIP + "业务的" + removeClicentId + "号客户服务");long startTime = System.currentTimeMillis();int randomTime = ServiceTime.MIN_SERVICE_TIME+ (ServiceTime.MAX_SERVICE_TIME - ServiceTime.MIN_SERVICE_TIME);Thread.sleep(randomTime);long winSerTime = (System.currentTimeMillis() - startTime) / 1000;System.out.println(windowId + "号" + type + "窗口开始为办理"+ BusinessType.VIP + "业务的" + removeClicentId+ "号客户服务完毕，服务时间为" + winSerTime);} catch (InterruptedException e) {e.printStackTrace();}}}

  /**

*开启服务用号码管理器中添加新来的用户

         */public void start() {Executors.newSingleThreadScheduledExecutor().execute(new Runnable() {@Overridepublic void run() {while (true) {try {Thread.sleep(3000);} catch (InterruptedException e) {e.printStackTrace();}int addClientId = numcontrollMachine.getCommonNumManager().numAdd();System.out.println("办理" + BusinessType.COMMON + "业务 的"+ addClientId + "号客户等待服务");}}});Executors.newSingleThreadScheduledExecutor().execute(new Runnable() {@Overridepublic void run() {while (true) {try {Thread.sleep(new Random().nextInt(8)*1000+1000);} catch (InterruptedException e) {e.printStackTrace();}int addClientId = numcontrollMachine.getExpressNumManager().numAdd();System.out.println("办理" + BusinessType.EXPRESS + "业务 的"+ addClientId + "号客户等待服务");}}});Executors.newSingleThreadScheduledExecutor().execute(new Runnable() {@Overridepublic void run() {while (true) {try {Thread.sleep(new Random().nextInt(17) * 1000 + 1000);} catch (InterruptedException e) {e.printStackTrace();}int addClientId = numcontrollMachine.getVipNumManager().numAdd();System.out.println("办理" + BusinessType.VIP + "业务 的"+ addClientId + "号客户等待服务");}}});}}

建立调用的类：开启各个服务窗口，并开始服务

package bank;public class MainService {public static void main(String[] args) {for (int i = 1; i <= 5; i++) {ServerWindow comSerWin = new ServerWindow(i, BusinessType.COMMON);comSerWin.start();comSerWin.callNum();}ServerWindow expressWin = new ServerWindow(6, BusinessType.EXPRESS);expressWin.start();expressWin.callNum();ServerWindow vipWin = new ServerWindow(7, BusinessType.VIP);vipWin.start();vipWin.callNum();}}

 

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