代码实现生产者消费者

生产者线程

public class ReadThread implements Runnable
{
    BlockingQueue<String> blocking;
    ReadThread(BlockingQueue<String> blocking)
    {
        this.blocking = blocking;
    }
    @Override
    public void run()
    {
        read();
    }
    public void read()
    {
        try
        {
            BufferedReader br = new BufferedReader(new InputStreamReader(
                    new FileInputStream(new File("D://1.txt"))));
            String line = "";
            while ((line = br.readLine()) != null)
            {
                System.out.println("向队列中添加："+line);
                while (!blocking.offer(line))
                {
                    System.out.println("队列已满 进行等待");
                    Thread.sleep(100);
                }
            }
            ParseFileThread.idDone = true;
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
}

消费者线程

public class ParseThread implements Runnable
{
    BlockingQueue<String> blocking;
   
    ParseThread(BlockingQueue<String> blocking)
    {
        this.blocking = blocking;
    }
   
    @Override
    public void run()
    {
        Parse();
    }
   
    public void Parse()
    {
        ExecutorService pool = Executors.newFixedThreadPool(3);
        try
        {
            for (int i = 0; i < 3; i++)
            {
                pool.execute(new Runnable()
                {
                    @Override
                    public void run()
                    {
                        while (true)
                        {
                            String line = blocking.poll();
                            if(ParseFileThread.idDone && line==null)
                            {
                                //已经处理完
                                System.out.println("任务已经出来完~ 进行退出");
                                return;
                            }
                            else if(!ParseFileThread.idDone && line==null)
                            {
                                System.out.println("队列已空！进行等待");
                                try
                                {
                                    Thread.sleep(100);
                                }
                                catch (InterruptedException e)
                                {
                                    e.printStackTrace();
                                }
                            }else if(!ParseFileThread.idDone && line!=null)
                            {
                               System.out.println("从队列中获取:"+line);
                            }
                        }
                       
                    }
                });
            }
           
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        pool.shutdown();
    }
   
}

主函数

public class ParseFileThread
{
    private static BlockingQueue<String> blocking = new LinkedBlockingQueue<String>(3);
   
    public static Boolean idDone = false;
   
    public static void main(String[] args)
    {
        ExecutorService executor = Executors.newFixedThreadPool(2);
       
        executor.execute(new ReadThread(blocking));
        executor.execute(new ParseThread(blocking));
       
        executor.shutdown();

    }
}