黑马程序员----银行业务调度系统
银行业务调度系统
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模拟银行调度系统逻辑。
需求
1.银行内有6个业务窗口，1-4为普通窗口，5为快速窗口，6为VIP窗口。
2.有三种类型客户：VIP客户，快速客户（交水电费类业务），普通客户。
3.一部随机生成各种类型的客户，概率比例为：
VIP客户：快速客户：普通客户 = 1：3：6.
4.客户办理用时设定最少时间。
5.各类型客户在其对应窗口按照顺序办理业务。
6.VIP和快速窗口无办理业务时刻受理普通客户，若有应该优先处理对应客户。
面向对象分析与设计
1.有三种类型的客户：VIP，快速，普通，异步随机生成个类型客户。
a.有一个取号机对象产生号码，好比产生客户。
b.三类客户号码编排独立，系统产生一个管理三个号码管理器的对象，号码管理器在系统中只有一个，设计成单例。
2。个类型客户在对应窗口按顺序依次办理业务，即依次叫号。
a.各个窗口如何获得叫号信息，他一定试问相应的号码管理器。
编程代码实现：
package com.isoftstone.interview.bank;public class Constants {public static int MAX_SERVICE_TIME = 10000; public static int MIN_SERVICE_TIME = 1000;public static int COMMON_CUSTOMER_INTERVAL_TIME = 1; }package com.isoftstone.interview.bank;public enum CustomerType {COMMON,EXPRESS,VIP;public String toString(){String name = null;switch(this){case COMMON:name = "普通";break;case EXPRESS:name = "快速";break;case VIP:name = name();break;}return name;}}package com.isoftstone.interview.bank;import java.util.concurrent.Executors;import java.util.concurrent.TimeUnit;import java.util.logging.Logger;public class MainClass {private static Logger logger = Logger.getLogger("cn.itcast.bankqueue");public static void main(String[] args) {//产生4个普通窗口for(int i=1;i<5;i++){ServiceWindow window = new ServiceWindow();window.setNumber(i);window.start();}//产生1个快速窗口ServiceWindow expressWindow = new ServiceWindow();expressWindow.setType(CustomerType.EXPRESS);expressWindow.start();//产生1个VIP窗口 ServiceWindow vipWindow = new ServiceWindow();vipWindow.setType(CustomerType.VIP);vipWindow.start(); //普通客户拿号Executors.newScheduledThreadPool(1).scheduleAtFixedRate(new Runnable(){public void run(){Integer serviceNumber = NumberMachine.getInstance().getCommonManager().generateNewNumber();System.out.println("第" + serviceNumber + "号普通客户正在等待服务！"); }},0,Constants.COMMON_CUSTOMER_INTERVAL_TIME, TimeUnit.SECONDS);//快速客户拿号Executors.newScheduledThreadPool(1).scheduleAtFixedRate(new Runnable(){public void run(){Integer serviceNumber = NumberMachine.getInstance().getExpressManager().generateNewNumber();System.out.println("第" + serviceNumber + "号快速客户正在等待服务！");}},0,Constants.COMMON_CUSTOMER_INTERVAL_TIME * 2, TimeUnit.SECONDS);//VIP客户拿号Executors.newScheduledThreadPool(1).scheduleAtFixedRate(new Runnable(){public void run(){Integer serviceNumber = NumberMachine.getInstance().getVipManager().generateNewNumber();System.out.println("第" + serviceNumber + "号VIP客户正在等待服务！");}},0,Constants.COMMON_CUSTOMER_INTERVAL_TIME * 6, TimeUnit.SECONDS);}}package com.isoftstone.interview.bank;public class NumberMachine {private NumberManager commonManager = new NumberManager();private NumberManager expressManager = new NumberManager();private NumberManager VIPManager = new NumberManager();public NumberManager getCommonManager() {return commonManager;}public NumberManager getExpressManager() {return expressManager;}public NumberManager getVIPManager() {return VIPManager;}private NumberMachine(){}public static NumberMachine getInstance(){return instance;}private static NumberMachine instance = new NumberMachine();}package com.isoftstone.interview.bank;import java.util.ArrayList;import java.util.List;public class NumberManager {private int lastNumber = 1;private List<Integer> queueNumber = new ArrayList<Integer>();public synchronized int generateNewManager(){queueNumber.add(lastNumber);return lastNumber++;}public synchronized int fetchServiceNumber(){return queueNumber.remove(0);}}package com.isoftstone.interview.bank;import java.util.Random;import java.util.concurrent.Executors;import java.util.logging.Logger;public class ServiceWindow {private static Logger logger = Logger.getLogger("cn.itcast.bankqueue");private CustomerType type = CustomerType.COMMON;private int number = 1;public CustomerType getType() {return type;}public void setType(CustomerType type) {this.type = type;}public void setNumber(int number){this.number = number;}public void start(){Executors.newSingleThreadExecutor().execute(new Runnable(){public void run(){while(true){switch(type){case COMMON:commonService();break;case EXPRESS:expressService();break;case VIP:vipService();break;}}}});}private void commonService(){String windowName = "第" + number + "号" + type + "窗口"; System.out.println(windowName + "开始获取普通任务!");Integer serviceNumber = NumberMachine.getInstance().getCommonManager().fetchNumber(); if(serviceNumber != null ){System.out.println(windowName + "开始为第" + serviceNumber + "号普通客户服务"); int maxRandom = Constants.MAX_SERVICE_TIME - Constants.MIN_SERVICE_TIME;int serviceTime = new Random().nextInt(maxRandom)+1 + Constants.MIN_SERVICE_TIME;try {Thread.sleep(serviceTime);} catch (InterruptedException e) {e.printStackTrace();} System.out.println(windowName + "完成为第" + serviceNumber + "号普通客户服务，总共耗时" + serviceTime/1000 + "秒"); }else{System.out.println(windowName + "没有取到普通任务，正在空闲一秒"); try {Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();} }}private void expressService(){Integer serviceNumber = NumberMachine.getInstance().getExpressManager().fetchNumber();String windowName = "第" + number + "号" + type + "窗口"; System.out.println(windowName + "开始获取快速任务!"); if(serviceNumber !=null){System.out.println(windowName + "开始为第" + serviceNumber + "号快速客户服务"); int serviceTime = Constants.MIN_SERVICE_TIME;try {Thread.sleep(serviceTime);} catch (InterruptedException e) {e.printStackTrace();} System.out.println(windowName + "完成为第" + serviceNumber + "号快速客户服务，总共耗时" + serviceTime/1000 + "秒"); }else{System.out.println(windowName + "没有取到快速任务！"); commonService();}}private void vipService(){Integer serviceNumber = NumberMachine.getInstance().getVipManager().fetchNumber();String windowName = "第" + number + "号" + type + "窗口"; System.out.println(windowName + "开始获取VIP任务!"); if(serviceNumber !=null){System.out.println(windowName + "开始为第" + serviceNumber + "号VIP客户服务"); int maxRandom = Constants.MAX_SERVICE_TIME - Constants.MIN_SERVICE_TIME;int serviceTime = new Random().nextInt(maxRandom)+1 + Constants.MIN_SERVICE_TIME;try {Thread.sleep(serviceTime);} catch (InterruptedException e) {e.printStackTrace();} System.out.println(windowName + "完成为第" + serviceNumber + "号VIP客户服务，总共耗时" + serviceTime/1000 + "秒"); }else{System.out.println(windowName + "没有取到VIP任务！"); commonService();} }}