Java

Question

我需要中断 swingworkers，但如果线程是运行某个片段，它应该在那之后中断。像这样：

public class worker extends SwingWorker<Integer, String>{
    //(...) constructors and everything else

    protected Integer doInBackground() throws Exception{
        //Code that can be interrupted
        while(true){
            //(...) more code that can be interrupted

            //This shouldn't be interrupted, has to wait till the loop ends
            for(int i=0; i<10; i++){ 

            //(...) more code that can be interrupted
        }            
    }
}

打断工人：

Worker worker = new Worker();
worker.execute();
worker.cancel(true);

我试过同步块，但不确定是不是行不通，还是我做错了。

有办法吗？谢谢！

Answer 1

您可以通过定期检查线程的标志来控制的任何方式。所以在开始之前你可以检查标志或中断然后继续。

将标志设置为易变的，这样它对所有线程或 AtomicBoolean 都可见

 while (flag) {
       //do stuff here
     }

或者你可以使用中断来取消任务。

 try {
      while(!Thread.currentThread().isInterrupted()) {
         // ...
      }
   } catch (InterruptedException consumed)

   }

Java - 防止 SwingWorker 中断

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