Java:向另一个线程抛出异常

Question

我有这样的java代码:

private class Uploader implements Runnable
{
    // ...

public void start()
{
    t.start();
}

public void run()
{
        try {

        while(i=in.read())
        {
            output.write(i);    // THIS IS A BLOCKING CALL !!
        }

        } catch(ProtocolException e) { ... }
          catch(IOException e1) { ... }
}

private void restore()
{
        ...
}

private class Checker implements Runnable
{
            // ...

    @Override
    public void run()
    {
                // I WANT (IN A PARTICULAR MOMENT) TO THROW AN
                // EXCEPTION INTO THE Uploader RUN METHOD FROM HERE,
                // IS IT POSSIBLE? 
    }
}
}

问题是我在 Run() 方法中有一个阻塞的 write()，所以我添加了一个检查连接是否正在传输的新线程:如果它没有传输，我想使用异常机制停止阻塞 write() (从检查线程向另一个线程的 run() 方法抛出异常)。可能吗？

编辑[已解决]:

唯一的办法是粗暴地关闭输出流，并处理写入的比特数以检查连接是否正在传输:

private class Uploader implements Runnable
{
    private OutputStream output;

    private int readedBits;

    public void run()
    {
        try {

            while(i=in.read())
            {
                output.write(i);

                readedBits++;
            }

        } catch(IOException e1)
                {   
                    // ENTERS HERE IF RESTORE() IS CALLED
                }
    }

    private void restore()
    {
        try {
            output.close();
        } catch (IOException e) {}

        // Restore connection ....
    }

    private int getReadedBits()
    {   
        return this.readedBits;
    }

    private class Checker implements Runnable
    {
            // ...

        @Override
        public void run()
        {
            while(true)
            {
                try {
                    Thread.sleep(timeout);
                } catch (InterruptedException e1) {}

                if(lastReaded >= getReadedBits())
                    restore();
                else
                    lastReaded = getReadedBits();
            }
        }
    }
}

Answer 1

您可以让您的代码接受 Thread.interrupt() 调用。请参阅此调用的 javadoc。