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银行业务调度系统
模拟实现银行业务调度系统逻辑，具体需求如下：
Ø 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。
Ø 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）。
Ø 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。
Ø 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）。
Ø 各类型客户在其对应窗口按顺序依次办理业务。
Ø 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。
Ø 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。
Ø 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。
根据老师讲解，自编代码：
public class MainClass {
public static void main(String[] args) {
int i=1;
for(;i<=4;i++){
new ServiceWindow(CustomerType.COMMON,i).startWindow();
}
new ServiceWindow(CustomerType.VIP,i).startWindow();
i++;
new ServiceWindow(CustomerType.EXPRESS,i).startWindow();
Executors.newSingleThreadScheduledExecutor().
scheduleAtFixedRate(new Runnable() {
@Override
public void run() {
Integer num=NumberMachine.getInstance().getCommonNumberManager().
generateWaitingNumber();
System.out.println("第"+num+"号普通客户正在等待服务……"); }
},0,1,TimeUnit.SECONDS);
Executors.newSingleThreadScheduledExecutor().
scheduleAtFixedRate(new Runnable() {
public void run() {
Integer num=NumberMachine.getInstance().
getVipNumberManager().generateWaitingNumber();
System.out.println("第"+num+"号VIP正在等待服务……"); }
},0,6,TimeUnit.SECONDS);
Executors.newSingleThreadScheduledExecutor().
scheduleAtFixedRate(new Runnable() {
public void run() {
Integer num=NumberMachine.getInstance().
getExpressNumberManager().generateWaitingNumber();
System.out.println("第"+num+"号快速正在等待服务……");
}
},0,3,TimeUnit.SECONDS);
}
}
public class ServiceWindow {
int windowNunber;
private CustomerType windowType;
public ServiceWindow(CustomerType type, int windowNunber) {
super();
this.windowType = type;
this.windowNunber = windowNunber;
}
int serviceTime = new Random()
.nextInt(CustomerIntervalTime.MAXCUSTOMERINTERVALTIME
- CustomerIntervalTime.MINCUSTOMERINTERVALTIME)
+ 1 + CustomerIntervalTime.MINCUSTOMERINTERVALTIME;
public void startWindow() {
new Thread(new Runnable() {
public void run() {
while (true)
switch (windowType) {
case COMMON:
commonService();
break;
case VIP:
vipService();
break;
case EXPRESS:
expressService();
break;
}
}
}).start();
}
public void commonService() {
String windowName = "第" + windowNunber + "号"+
windowType+"窗口";
System.out.println(windowName + "开始获取普通任务……");
Integer num = NumberMachine.getInstance().
getCommonNumberManager().fetchServiceNumber();
if (num != null) {
System.out.println(windowName + "准备为" + num +
"号普通客户服务……");
try {
Thread.sleep(serviceTime);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(windowName + "为" + num +
"号普通客户服务完毕");
} else {
System.out.println(windowName+"暂时没有普通客户，
休息1秒钟……");
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void expressService() {
String windowName = "第" + windowNunber + "号"
+windowType+"窗口";
System.out.println(windowName + "开始获取快速任务……");
Integer num = NumberMachine.getInstance().
getExpressNumberManager().fetchServiceNumber();
if (num != null) {
System.out.println(windowName + "准备为" + num
+ "号快速客户服务……");
try {
serviceTime = CustomerIntervalTime.MINCUSTOMERINTERVALTIME;
Thread.sleep(serviceTime);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(windowName + "为" + num
+ "号快速客户服务完毕");
} else {
System.out.println(windowName+"暂时没有快速客户，准备获取普通任务");
commonService();
}
}
public void vipService() {
String windowName = "第" + windowNunber + "号"
+windowType+"窗口";
System.out.println(windowName + "开始获取vip任务……");
Integer num = NumberMachine.getInstance().
getVipNumberManager().fetchServiceNumber();
if (num != null) {
System.out.println(windowName + "准备为" + num
+ "号vip客户服务……");
try {
Thread.sleep(serviceTime);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(windowName + "为" + num
+ "号vip客户服务完毕");
} else {
System.out.println(windowName+"暂时没有vip客户，准备获取普通任务");
commonService();
}
}
}
public class NumberMachine {
private static NumberMachine nM=new NumberMachine();
private NumberManager commonNumberManager=new NumberManager();
private NumberManager vipNumberManager=new NumberManager();
private NumberManager expressNumberManager=new NumberManager();
public static NumberMachine getInstance(){
return nM;
}
public NumberManager getCommonNumberManager() {
return commonNumberManager;
}
public NumberManager getVipNumberManager() {
return vipNumberManager;
}
public NumberManager getExpressNumberManager() {
return expressNumberManager;
}
}
public class NumberManager {
private List<Integer> numberList=new ArrayList<Integer>();
private Integer waitingNumber=0;
public synchronized Integer generateWaitingNumber(){
Integer num=++waitingNumber;numberList.add(num);
return num;
}
public synchronized Integer fetchServiceNumber(){
if(numberList.size()>0)
return numberList.remove(0);
else
return null;
}
}
public class CustomerIntervalTime {
public static final int MINCUSTOMERINTERVALTIME=1000;
public static final int MAXCUSTOMERINTERVALTIME=10000;
}
public enum CustomerType {
VIP, COMMON, EXPRESS;
public String toString() {
String name = null;
switch (CustomerType.this) {
case VIP:
name = "vip";
break;
case COMMON:
name = "普通";
break;
case EXPRESS:
name = "快速";
break;
}
return name;
}
}
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