生产者消费者模型实现<二>真实实现BlockingQueue

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为什么叫真实实现呢？上文的模拟实现中，生成或者消费都是在命令行打印了一个提示，而真实的实现肯定是生产或者消费Object的，而不仅仅是在Concole打印一行字符而已，下面借助ArrayBlockingQueue实现（不熟悉ArrayBlockingQueue的可以去看并发的书籍，如《java 并发编程实战》，《java 并发编程的艺术》等）。

Store.java

package test.producerAndConsumer2;import java.util.concurrent.ArrayBlockingQueue;import java.util.concurrent.BlockingQueue;/** * 仓库类 * create by qiuping.wu on 2015-08-12 */public class Store<E> {private BlockingQueue<E> bq;//最大容量呢public Store(int max_cap) {super();bq = new ArrayBlockingQueue<E>(max_cap);}public void Produce(E product) {try {bq.put(product);System.out.println(Thread.currentThread().getName()+"生产者往仓库放入+++++++++++++++商品:"+product.toString()+",仓库目前大小:" +bq.size());} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public E Consume() {try {E e = bq.take();System.out.println(Thread.currentThread().getName()+"消费者从仓库取出---------------商品:"+e.toString()+",仓库目前大小:" +bq.size());return e;} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();return null;}}public static void main(String[] args) throws InterruptedException {// TODO Auto-generated method stubStore store  = new Store<String>(10);store.Produce(1);store.Produce(2);store.Consume();store.Consume();store.Consume();}}

Producer.java

package test.producerAndConsumer2;/** * 生产者类 *  * create by qiuping.wu on 2015-08-12 */public class Producer implements Runnable {private Store store;private AtomicInteger count = new AtomicInteger(0);//不能用private int count=0;public Producer(Store store) {this.store = store;}@Overridepublic void run(){while(true){store.Produce(count.addAndGet(1));//不能用count++try {Thread.sleep(900);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}

Consumer.java

package test.producerAndConsumer2;/** * 消费者类 *  * create by qiuping.wu on 2015-08-12 */public class Consumer implements Runnable {private Store store;public Consumer(Store store) {this.store = store;}@Overridepublic void run() {while (true) {store.Consume();try {Thread.sleep(1000);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}

测试一：生产者：消费者= 1:1

testSingle.java

package test.producerAndConsumer2;/** * 单生产者单消费者测试类 *  * create by qiuping.wu on 2015-08-12 */public class testSingle {public static void main(String[] args) {Store store  = new Store(10);Producer p = new Producer(store);Consumer c  = new Consumer(store);new Thread(p).start();new Thread(c).start();}}

测试二：生产者：消费者= m:n

testMulti.java

package test.producerAndConsumer2;/** * 多生产者多消费者测试类 *  * create by qiuping.wu on 2015-08-12 */import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class testMulti {public static void main(String[] args) {ExecutorService es = Executors.newCachedThreadPool();Store store = new Store<String>(20);Producer p = new Producer(store);Consumer c = new Consumer(store);for (int i = 0; i < 3; i++) {es.submit(p);}for (int i = 0; i < 4; i++) {es.submit(c);}}}

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