银行业务调度系统-java并发程序模拟解决方案

来源：互联网发布：excel数据库管理功能编辑：程序博客网时间：2024/05/16 15:00
题目地址：http://blog.csdn.net/ie800/article/details/19376439
import java.util.HashMap;import java.util.Map;import java.util.concurrent.BlockingQueue;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;import java.util.concurrent.LinkedBlockingQueue;import java.util.concurrent.Semaphore;import java.util.concurrent.TimeUnit;import java.util.concurrent.atomic.AtomicInteger;public class Test {    // protected Logger log = Logger.getLogger(this.getClass());    // 号码生成封装Map    private Map<CustomerType, AtomicInteger> nm = new HashMap<CustomerType, AtomicInteger>();    {        nm.put(CustomerType.COMMON, new AtomicInteger(1));        nm.put(CustomerType.EXPRESS, new AtomicInteger(1));        nm.put(CustomerType.VIP, new AtomicInteger(1));    }    // 排号队列封装Map    private Map<CustomerType, BlockingQueue<Integer>> qm = new HashMap<CustomerType, BlockingQueue<Integer>>();    {        qm.put(CustomerType.COMMON, new LinkedBlockingQueue<Integer>());        qm.put(CustomerType.EXPRESS, new LinkedBlockingQueue<Integer>());        qm.put(CustomerType.VIP, new LinkedBlockingQueue<Integer>());    }    // 呼叫应答模拟队列    private BlockingQueue<Semaphore> crq = new LinkedBlockingQueue<Semaphore>();    enum CustomerType {        COMMON, EXPRESS, VIP;        public String toString() {            switch (this) {            case COMMON:                return "【普通】";            case EXPRESS:                return "【快速】";            }            return "【VIP】";        }    }    /**     * 服务窗口     */    class Service extends Thread {        private CustomerType[] types;        private String name;        // 信号量媒介--一次只能服务一人        private Semaphore sem = new Semaphore(1);        public Service(CustomerType[] types, String name) {            this.types = types;            this.name = name;        }        public void run() {            int length = types.length;            int i = 0;//如果要持续工作套入 while(true) i=0;重置代码            while (i < length) {                CustomerType type = types[i];                BlockingQueue<Integer> q = qm.get(type);                try {                    Integer num = q.poll(100, TimeUnit.MILLISECONDS);                    if (num != null) {                        // 呼叫signal-call                        sem.acquire();                        System.out.println(this.name + "正在呼叫~" + num + "~号" + type.toString() + "！");                        crq.put(sem);                        // 等待服务wait                        sem.acquire();                        // 成功继续                        System.out.println(this.name + "开始为~" + num + "~号" + type.toString() + "服务！");                        // 服务中 --多步操作完全可以用线程模拟                        Thread.sleep(5000);                        // 服务完毕                        System.out.println(this.name + "为~" + num + "~号" + type.toString() + "服务完毕！");                        sem.release();                                                                        //数组次序确定优先级                        i = 0;                    } else {                        i++;                    }                } catch (InterruptedException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }        }    }    /**     * 生成客户     */    class GenerateCustomer extends Thread {        private CustomerType type;        public GenerateCustomer(CustomerType type) {            this.type = type;        }        public void run() {            while (true) {                try {                    AtomicInteger num = nm.get(type);                    int i = num.getAndIncrement();                    BlockingQueue<Integer> q = qm.get(type);                    System.out.println(i + "~号" + type.toString() + "领号等待！");                    q.put(i);                    // 每隔3s生成一个客户                    Thread.sleep(3000);                } catch (InterruptedException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }                //            }        }    }    /**     * 模拟应答-无记名     */    class CallRes extends Thread {        public void run() {            while (true) {                try {                                       Semaphore sem = crq.take();                    // 响应一下，释放许可                    sem.release();                } catch (InterruptedException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }        }    }    /**     * Purpose:     *      * @author maomj     * @createTime: 2014-2-27 上午9:51:35     * @createSpecification:     * @modifiedTime:     * @modifiedBy     * @modifiedSpecification:     * @param args     */    public static void main(String[] args)  {        Test test=new Test();                ExecutorService threadPool = Executors.newFixedThreadPool(18);        // 创建服务窗口        // 1-4        threadPool.execute(test.new Service(new CustomerType[]{CustomerType.COMMON},"【窗口1】"));        threadPool.execute(test.new Service(new CustomerType[]{CustomerType.COMMON},"【窗口2】"));        threadPool.execute(test.new Service(new CustomerType[]{CustomerType.COMMON},"【窗口3】"));        threadPool.execute(test.new Service(new CustomerType[]{CustomerType.COMMON},"【窗口4】"));        // 5        threadPool.execute(test.new Service(new CustomerType[]{CustomerType.EXPRESS,CustomerType.COMMON},"【窗口5】"));              // 6        threadPool.execute(test.new Service(new CustomerType[]{CustomerType.VIP,CustomerType.COMMON},"【窗口6】"));                // 生成客户1:6:3         threadPool.execute(test.new GenerateCustomer(CustomerType.VIP));        for(int i=0;i<6;i++)            threadPool.execute(test.new GenerateCustomer(CustomerType.COMMON));        for(int i=0;i<3;i++)            threadPool.execute(test.new GenerateCustomer(CustomerType.EXPRESS));                //启动模拟应答        threadPool.execute(test.new CallRes());    }}
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