问java -该进程无法访问该文件，因为该文件正被另一个进程使用

EN

public void monitor() throws IOException, InterruptedException {
    Path faxFolder = Paths.get(TEMP_FILE_LOCATION);
    WatchService watchService = FileSystems.getDefault().newWatchService();
    faxFolder.register(watchService, StandardWatchEventKinds.ENTRY_CREATE);
    boolean valid = true;
    do {
        WatchKey watchKey = watchService.take();
        for (WatchEvent<?> event : watchKey.pollEvents()) {
            if (StandardWatchEventKinds.ENTRY_CREATE.equals(event.kind())) {
                String fileName = event.context().toString();
                publishToKafka(new File(TEMP_FILE_LOCATION + fileName).toPath(), "topic");
            }
        }
        valid = watchKey.reset();
    } while (valid);
}

private void publishToKafka(Path path, String topic) {
    try (BufferedReader reader = Files.newBufferedReader(path)) {
        String input = null;
        while ((input = reader.readLine()) != null) {
            kafkaProducer.publishMessageOnTopic(input, topic);
        }
    } catch (IOException e) {
        LOG.error("Could not read buffered file to send message on kafka.", e);
    } finally {
        try {
            Files.deleteIfExists(path); // This is where I get the exception
        } catch (IOException e) {
            LOG.error("Problem in deleting the buffered file {}.", path.getFileName(), e);
        }
    }
}

java.nio.file.FileSystemException: D:\upload\notif-1479974962595.csv: The process cannot access the file because it is being used by another process.

    at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsFileSystemProvider.implDelete(Unknown Source)
    at sun.nio.fs.AbstractFileSystemProvider.deleteIfExists(Unknown Source)
    at java.nio.file.Files.deleteIfExists(Unknown Source)
    at com.panasonic.mdw.core.utils.MonitorDirectory$FileContentPublisher.publishToKafka(MonitorDirectory.java:193)
    at com.panasonic.mdw.core.utils.MonitorDirectory$FileContentPublisher.sendData(MonitorDirectory.java:125)
    at com.panasonic.mdw.core.utils.MonitorDirectory$FileContentPublisher.run(MonitorDirectory.java:113)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)