监视服务两次更新单个文件

Question

我第一次使用监视服务，我正在尝试使用监视服务更新文件，但它会更新该文件两次。

        boolean valid = true;
        do{
          WatchKey watchKey = watchService.take();
          for(WatchEvent<?> event : watchKey.pollEvents()){
          WatchEvent.Kind kind = event.kind();

                if(StandardWatchEventKinds.ENTRY_CREATE.equals(kind)){
                    String fileName = event.context().toString();
                }

                if(StandardWatchEventKinds.ENTRY_MODIFY.equals(kind)){
                    String fileName = event.context().toString();
                }

                if(StandardWatchEventKinds.ENTRY_DELETE.equals(kind)){
                    String fileName = event.context().toString();
                }
            }
            valid = watchKey.reset();
        }while(valid);

Somtime我还得到另一个错误，当我想在删除第一个文件后再次创建相同的文件。然后我得到低于错误

java.io.FileNotFoundException: D:\Watson\docs\FMO-OMS_Requirements.docx (The process cannot access the file because it is being used by another process)