java 将 ByteArrayOutputStream 转换为 FileInputStream
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convert ByteArrayOutputStream to FileInputStream
提问by Uwe Plonus
I have stream saved in ByteArrayOutputStream. now I want to to read that in FileInputStream. how Can I do that?
我已将流保存在ByteArrayOutputStream. 现在我想在FileInputStream. 我怎样才能做到这一点？
it's my outputStream.
这是我的输出流。
...
OutputStream out = new ByteArrayOutputStream();
...
now how to read that, from FileInputStream?
现在如何阅读，从FileInputStream？
回答by Uwe Plonus
You can create a ByteArrayInputStreamwith
您可以创建一个ByteArrayInputStream与
InputStream is = new ByteArrayInputStream(bos.toByteArray());
and then read from this InputStream.
然后从这里开始阅读InputStream。
If your interface only accepts a FileInputStreamthen the interface is broken...
如果您的接口只接受 aFileInputStream那么接口坏了...
If, at all, an interface only works with files it should accept a Fileelse it should use an InputStream.
如果接口只适用于文件，它应该接受File其他文件，否则它应该使用InputStream.
Also if you use threads you can use PipedInputStreamand PipedOutputStreamdirectly between the threads.
此外，如果您使用线程，则可以直接在线程之间使用PipedInputStream和PipedOutputStream。
