Re: Downloading a file in Linux
On Aug 19, 12:19 pm, Grzesiek <grzesiek.wilanow...@gmail.com> wrote:
Hi,
I use the following function to download a jar file from my website:
public synchronized boolean copyFileFromWeb(){
try
{
URL url = new URL(sourceURL);
URLConnection urlC = url.openConnection();
InputStream is = url.openStream();
System.out.print("Copying resource (type: " +
urlC.getContentType());
Date date=new Date(urlC.getLastModified());
System.out.flush();
FileOutputStream fos=null;
fos = new FileOutputStream(destinationPath);
int oneChar, count=0;
while ((oneChar=is.read()) != -1)
{
fos.write(oneChar);
count++;
}
is.close();
fos.close();
System.out.println(count + " byte(s) copied");
return true;
}
catch (Exception e){
System.err.println(e.toString());
}
return false;
}
In Windows XP it works perfectly, but in Linux it works very slow and
the downloaded file is corrupted! What is wrong?
It shouldn't be any different on Linux, unless there is something else
fundamentally different about your set up.
Is it the same machine, dual booted into one OS or the other? Is it
two similar machines on the same network subnet? Is it two very
different machines, or on different networks? There are a lot of
possibilities here.
One thing I would suggest, regardless of your machines, is that you
read into a byte[] (at least 1024 bytes, if not larger, probably
between 16k and 256k) instead of one byte at a time. It is extremely
inefficient to read/write one byte at a time.
BTW, instead of System.setProperty, you can use -
Dhttp.proxyHost=xyz.com on the command line before the class name when
you execute your program, but I really don't think its proxy, I think
its the byte-at-a-time reading.