java - AsynchronousFileChannel 抛出 java.nio.file.NoSuchFileException

Question

我正在玩java nio 2，我编写了一个简单的应用程序，应该创建一个文件并向其中写入内容，但我收到文件不存在异常

ByteBuffer buffer = ByteBuffer.wrap("jhkjhkhjkhkjhkjhkjhkjhkhkjhkjhkjh".getBytes());

    Path path = Paths.get("F:", "dummyFile.txt");

    try(AsynchronousFileChannel asynchronousFileChannel =
            AsynchronousFileChannel.open(path, StandardOpenOption.CREATE_NEW)) {
        Future<Integer> future = asynchronousFileChannel.write(buffer, 0);
        while (!future.isDone()) {
            System.out.println("waiting");
        }

        System.out.println(String.format("Done - bytes written %d", future.get()));


    } catch (Exception e) {
        System.out.println(e.toString());
    }

Answer 1

好吧，我发现我应该添加写入选项

AsynchronousFileChannel asynchronousFileChannel =
            AsynchronousFileChannel.open(path, StandardOpenOption.CREATE, StandardOpenOption.WRITE)