我希望还不晚…
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();document.save(byteArrayOutputStream);document.close();InputStream inputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
瞧!您已经有了两个输入流!

我希望还不晚…
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();document.save(byteArrayOutputStream);document.close();InputStream inputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
瞧!您已经有了两个输入流!