pstanton pstanton - 1 year ago 153
Java Question

is it possible to get a zipentry's inputstream from a zipinputstream?

I'm receiving a ZipInputStream from another source, and I need to provide the first entry's InputStream to another source.

I was hoping to be able to do this without saving a temp file on a device, however the only way I know of getting an InputStream for an individual entry is via ZipFile.getInputStream(entry) and since I have a ZipInputStream and not a ZipFile, that is not possible.

So the best solution I have is

  1. save incoming InputStream to a file

  2. read file as ZipFile

  3. use first entry's InputStream

  4. delete temp file.

Answer Source


it's entirely possible, the call to ZipInputStream.getNextEntry() positions the InputStream at the start of the entry and therefore supplying the ZipInputStream is the equivalent of supplying a ZipEntry's InputStream.

the ZipInputStream is smart enough to handle the entry's EOF downstream, or so it seems.


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