Java BlockingQueue生產者消費者實例

• 產品類：

  /**
   * 產品
   *
   * @author jiazhipeng
   * @version 1.0
   * @date 2016-11-29
   */
  public class Product {
  
      private int id;
  
      public Product(int id){
          this.id = id;
      }
  
      public String toString(){
          return "產品" + id;
      }
  }

• 倉庫類：

  /**
   * 倉庫
   *
   * @author jiazhipeng
   * @version 1.0
   * @date 2016-11-29
   */
  public class Storage {
  
      private BlockingQueue<Product> queue = new ArrayBlockingQueue<>(10);
  
      public synchronized void put(Product p) throws InterruptedException{
          queue.put(p);
      }
  
      public Product take() throws InterruptedException{
          return queue.take();
      }
  }

• 生產者類：

  /**
   * 生產者
   *
   * @author jiazhipeng
   * @version 1.0
   * @date 2016-11-29
   */
  public class Producter implements Runnable{
  
      // 自己的信號量
      private Semaphore semo1;
      // 別人的信號量
      private Semaphore semo2;
      private String name;
      private Storage storage;
      private Test test;
  
      public Producter(Storage storage, Test test, String name, Semaphore semo1, Semaphore semo2){
          this.storage = storage;
          this.test = test;
          this.name = name;
          this.semo1 = semo1;
          this.semo2 = semo2;
      }
  
      @Override
      public void run() {
          for(; ; ){
              try {
                  semo1.acquire();
                  int i = test.getInt();
                  Product p = new Product(i);
                  storage.put(p);
                  System.out.println(name + "成功生產:" + p.toString());
                  semo2.release();
              } catch (InterruptedException e) {
                  e.printStackTrace();
                  break;
              }
          }
      }
  }

• 消費者類：

  /**
   * 消費者
   *
   * @author jiazhipeng
   * @version 1.0
   * @date 2016-11-29
   */
  public class Consumer implements Runnable{
  
      private String name;
      private Storage storage;
  
      public Consumer(Storage storage, String name){
          this.storage = storage;
          this.name = name;
      }
  
      @Override
      public void run() {
          for(; ; ){
              try {
                  Product p = storage.take();
                  System.out.println(name + "成功消費:" + p.toString());
              } catch (Exception e) {
                  e.printStackTrace();
                  break;
              }
          }
      }
  }

• 測試類：

  /**
   * 測試
   *
   * @author jiazhipeng
   * @version 1.0
   * @date 2016-11-29
   */
  public class Test {
  
      private int i = 1;
  
      public static void main(String[] args) {
          Test test = new Test();
          Storage storage = new Storage();
  
          Semaphore semo1 = new Semaphore(1);
          Semaphore semo2 = new Semaphore(0);
  
          Producter pr1 = new Producter(storage, test, "A1", semo1, semo2);
          Producter pr2 = new Producter(storage, test, "A2", semo2, semo1);
          Consumer cr1 = new Consumer(storage, "B1");
          Consumer cr2 = new Consumer(storage, "B2");
  
          ExecutorService service = Executors.newCachedThreadPool();
          service.submit(pr1);
          service.submit(pr2);
          service.submit(cr1);
          service.submit(cr2);
      }
  
      public synchronized int getInt(){
          return i++;
      }
  }