Re: Downloading a file in Linux
On Aug 19, 2:55 pm, Grzesiek <grzesiek.wilanow...@gmail.com> wrote:
On 19 Sie, 23:14, Arne Vajh=F8j <a...@vajhoej.dk> wrote:
Grzesiek wrote:
I read one byte at a time because i download a JAR FILE not an image.
No corrupted bytes are allowed here. In fact i tried reading into
byte[1024] and byte[4096] but then downloaded file is 140kB and 160kB
instead of 116kB- which is the size of the file i want to downlaod. To
large file is corrupted and cannot be run.
You can get any file by reading with large buffers - it only
affects performance not functionality.
Code snippet:
URL url = new URL(urlstr);
HttpURLConnection con =
(HttpURLConnection)url.openConnection();
con.connect();
if(con.getResponseCode() == HttpURLConnection.HTTP_OK)=
{
InputStream is = con.getInputStream();
OutputStream os = new FileOutputStream(fnm);
byte[] b = new byte[100000];
int n;
while((n = is.read(b)) >= 0) {
os.write(b,0,n);
}
os.close();
is.close();
}
con.disconnect();
Arne
Thanx Arne,
i used your snippet and now my function works fine :-) There is no
diffrence between Linux and Windows Xp now. So reading one byte at a
time was the problem.
Thanx all :-)
Glad that worked for you. Something else I forgot to mention was that
reading one Character at a time is VERY different from reading one
Byte at a time. There are some conversions that Java does, which
would explain your corrupt data. Unlike C/C++, Char are 2 bytes, and
they are usually encoded/decoded when written to/read from streams, so
you end up with unexpected values if you're trying to read non-
character data.
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