Opening a URL-zipfile.
Piet de Jong
Can anyone tell me how to open a Zipfile from a URL into an InputStream?
Erick Griffin
Piet de Jong
Yeah, but the problem is, it's a automatically generated zipfile, so actually
it's a file with extension asp, that I guess I should rename to a .zip-file,
before opening it with the zip-object
Erick Griffin
can open the file with the File() constructor and pass that in,
the contents have to be of course in zip format, in order to
use the java.lang.zip class methods...fyi
--Erick
Piet de Jong
ZipFile zip = new ZipFile(new File("c:\\tmp\\zipfile"));
Because, what I'm getting trying to run this code, is:
java.util.zip.ZipException: error in opening zip file
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:69)
at java.util.zip.ZipFile.<init>(ZipFile.java:84)
at Test.main(Test.java:17)
Erick Griffin
wrong with the file though. Sure the zip file you have was created under
normal conditions and is it formatted right?! ZipExcp means something is
hosed with the file itself!
--erick
Piet de Jong
> Piet de Jong wrote:
>
> > Would you say the next should be working?
> >
> > ZipFile zip = new ZipFile(new File("c:\\tmp\\zipfile"));
> >
> > Because, what I'm getting trying to run this code, is:
> >
> > java.util.zip.ZipException: error in opening zip file
> > at java.util.zip.ZipFile.open(Native Method)
> > at java.util.zip.ZipFile.<init>(ZipFile.java:69)
> > at java.util.zip.ZipFile.<init>(ZipFile.java:84)
> > at Test.main(Test.java:17)
> >
> >
Erick Griffin wrote:
> No, haven't seen that one...! Have seen IOException, if there is something
> wrong with the file though. Sure the zip file you have was created under
> normal conditions and is it formatted right?! ZipExcp means something is
> hosed with the file itself!
>
> --erick
Yeah, well, the zip was created with an Active Server-script, parsing its output in
(Sorry, I never work with ASP, so I do not know how it works exactly, but my guess is
as good as any) zip-valid-format. It's working also, since when I'm downloading the
ASP-zipfile, I can unzip it myself using Winzip 7.0
Piet
Karl Schmidt
Am 22.12.99, 07.45.15, schrieb Piet de Jong <pi...@businessnet.net> zum
Thema Re: Opening a URL-zipfile.:
> Erick Griffin wrote:
If you want to open a zip file on an internet server, it's not a file,
but an URL. So you need to open an URLConnection, get the InputStream
from it, and wrap that InputStream in a ZipInputStream. Then you can
access any File inside this ZIP. Wether the source is a 'real' file,
lying physically on the server or if it's generated by some program
doesn't matter.
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Piet de Jong
> If you want to open a zip file on an internet server, it's not a file,
> but an URL. So you need to open an URLConnection, get the InputStream
> from it, and wrap that InputStream in a ZipInputStream. Then you can
> access any File inside this ZIP. Wether the source is a 'real' file,
> lying physically on the server or if it's generated by some program
> doesn't matter.
>
> --
That's what I'd say, but it DOES, when the zipping-method is not compatible
with your own.
Karl Schmidt
Am 23.12.99, 07.49.25, schrieb Piet de Jong <pi...@businessnet.net> zum
Thema Re: Opening a URL-zipfile.:
> >
Of course, but that's a different story :-)
At least you should be able to open the file and check the ZIP
version. Then go ahead and write your own decrompression algorythm...
:-)