模拟实现银行业务调度系统逻辑,具体需求如下:
- 银行内有6个业务窗口,1 - 4号窗口为普通窗口,5号窗口为快速窗口,6号窗口为VIP窗口。
- 有三种对应类型的客户:VIP客户,普通客户,快速客户(办理如交水电费、电话费之类业务的客户)。
- 异步随机生成各种类型的客户,生成各类型用户的概率比例为: VIP客户 :普通客户 :快速客户 = 1 :6 :3。
- 客户办理业务所需时间有最大值和最小值,在该范围内随机设定每个VIP客户以及普通客户办理业务所需的时间,快速客户办理业务所需时间为最小值(提示:办理业务的过程可通过线程Sleep的方式模拟)。
- 各类型客户在其对应窗口按顺序依次办理业务。
- 当VIP(6号)窗口和快速业务(5号)窗口没有客户等待办理业务的时候,这两个窗口可以处理普通客户的业务,而一旦有对应的客户等待办理业务的时候,则优先处理对应客户的业务。
- 随机生成客户时间间隔以及业务办理时间最大值和最小值自定,可以设置。
- 不要求实现GUI,只考虑系统逻辑实现,可通过Log方式展现程序运行结果。
Constants.java
package com.hern.bank;
/**
*
* @Author Hern
* @Date 2019-08-28
* @Describle
* */
public class Constants {
public static int MAX_SERVICE_TIME = 10000; //10秒!
public static int MIN_SERVICE_TIME = 1000; //1秒!
/*每个普通窗口服务一个客户的平均时间为5秒,一共有4个这样的窗口,也就是说银行的所有普通窗口合起来
* 平均1.25秒内可以服务完一个普通客户,再加上快速窗口和VIP窗口也可以服务普通客户,所以,
* 1秒钟产生一个普通客户比较合理,*/
public static int COMMON_CUSTOMER_INTERVAL_TIME = 1;
}
CustomerType.java
package com.hern.bank;
/**
*
* @Author Hern
* @Date 2019-08-28
* @Describle
* */
public enum CustomerType {
COMMON,EXPRESS,VIP;
@Override
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;
}
}
NumberMachine.java
package com.hern.bank;
/**
*
* @Author Hern
* @Date 2019-08-28
* @Describle
* */
public class NumberMachine {
private NumberMachine(){}
private static NumberMachine instance = new NumberMachine();
public static NumberMachine getInstance(){
return instance;
}
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;
}
}
NumberManager.java
package com.hern.bank;
import java.util.ArrayList;
import java.util.List;
/**
*
* @Author Hern
* @Date 2019-08-28
* @Describle
* */
public class NumberManager {
private int lastNumber = 1;
private List<Integer> queueNumber = new ArrayList();
//客户取得号码
public synchronized Integer generateNewManager(){
queueNumber.add(++lastNumber);
return lastNumber;
}
//窗口获取下一个服务号码
public synchronized Integer fetchServiceNumber(){
if (queueNumber.size() > 0){
return queueNumber.remove(0);
}else {
return null;
}
}
}
ServiceWindow.java
package com.hern.bank;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadLocalRandom;
import java.util.logging.Logger;
/**
*
* @Author Hern
* @Date 2019-08-28
* @Describle
* 没有把VIP窗口和快速窗口做成子类,是因为实际业务中的普通窗口可以随时被设置为VIP窗口和快速窗口。
* */
public class ServiceWindow {
private static Logger logger = Logger.getLogger("com.hern");
private CustomerType type = CustomerType.COMMON;
private int windowID = 1;
public CustomerType getType() {
return type;
}
public void setType(CustomerType type) {
this.type = type;
}
public void setWindowID(int windowID) {
this.windowID = windowID;
}
public void start(){
Executors.newSingleThreadExecutor().execute(new Runnable() {
@Override
public void run() {
while (true){
switch (type){
case COMMON:{
commonsService();
break;
}
case EXPRESS:{
expressService();
break;
}
case VIP:{
vipService();
break;
}
}
}
}
});
}
private void commonsService(){
String windowName = "第" + windowID + "号" + type + "窗口";
System.out.println(windowName + "正在获取任务!");
Integer number = NumberMachine.getInstance().getCommonManager().fetchServiceNumber();
if (number != null){
System.out.println(windowName + "开始为第" + number + "号普通客户服务");
int maxRand = Constants.MAX_SERVICE_TIME - Constants.MIN_SERVICE_TIME;
int serveTime = ThreadLocalRandom.current().nextInt(maxRand) + 1 + Constants.MIN_SERVICE_TIME;
try {
Thread.sleep(serveTime);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(windowName + "为第" + number + "个" + type + "客户完成服务,耗时:" + serveTime/100 + "秒");
}else {
System.out.println(windowName + "没有取到服务任务,正在空闲一秒!");
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
private void expressService(){
String windowName = "第" + windowID + "号" + type + "窗口";
System.out.println(windowName + "正在获取任务!");
Integer number = NumberMachine.getInstance().getExpressManager().fetchServiceNumber();
if (number != null){
System.out.println(windowName + "开始为第" + number + "号快速客户服务");
int maxRand = Constants.MAX_SERVICE_TIME - Constants.MIN_SERVICE_TIME;
int serveTime = ThreadLocalRandom.current().nextInt(maxRand) + 1 + Constants.MIN_SERVICE_TIME;
try {
Thread.sleep(serveTime);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(windowName + "为第" + number + "个" + type + "客户完成服务,耗时:" + serveTime/100 + "秒");
}else {
System.out.println(windowName + "没有取到快速任务!");
commonsService();
}
}
private void vipService(){
String windowName = "第" + windowID + "号" + type + "窗口";
System.out.println(windowName + "正在获取任务!");
Integer number = NumberMachine.getInstance().getVipManager().fetchServiceNumber();
if (number != null){
System.out.println(windowName + "开始为第" + number + "号普通客户服务");
int maxRand = Constants.MAX_SERVICE_TIME - Constants.MIN_SERVICE_TIME;
int serveTime = ThreadLocalRandom.current().nextInt(maxRand) + 1 + Constants.MIN_SERVICE_TIME;
try {
Thread.sleep(serveTime);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(windowName + "为第" + number + "个" + type + "客户完成服务,耗时:" + serveTime/100 + "秒");
}else {
System.out.println(windowName + "没有取到VIP任务!");
commonsService();
}
}
}
MainClass.java
package com.hern.bank;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
/**
*
* @Author Hern
* @Date 2019-08-28
* @Describle
* */
public class MainClass {
public static void main(String[] args) {
//产生4个普通窗口
for (int i = 0; i < 5; i++) {
ServiceWindow commonsServiceWindow = new ServiceWindow();
commonsServiceWindow.setWindowID(i);
commonsServiceWindow.start();
}
//产生1个快速窗口
ServiceWindow expressServiceWindow = new ServiceWindow();
expressServiceWindow.setType(CustomerType.EXPRESS);
expressServiceWindow.start();
//产生1个VIP窗口
ServiceWindow vipServiceWindow = new ServiceWindow();
vipServiceWindow.setType(CustomerType.VIP);
vipServiceWindow.start();
Executors.newScheduledThreadPool(1).scheduleAtFixedRate(
new Runnable() {
@Override
public void run() {
Integer serviceNumber = NumberMachine.getInstance().getCommonManager().generateNewManager();
/**
* 采用logger方式,无法看到直观的运行效果,因为logger.log方法内部并不是直接把内容打印出出来,
* 而是交给内部的一个线程去处理,所以,打印出来的结果在时间顺序上看起来很混乱。
*/
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(){
@Override
public void run(){
Integer serviceNumber = NumberMachine.getInstance().getExpressManager().generateNewManager();
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(){
@Override
public void run(){
Integer serviceNumber = NumberMachine.getInstance().getVipManager().generateNewManager();
System.out.println("第" + serviceNumber + "号VIP客户正在等待服务!");
}
},
0,
Constants.COMMON_CUSTOMER_INTERVAL_TIME * 6,
TimeUnit.SECONDS
);
}
}