Solved

URL Grabber

Posted on 2002-05-10
7
313 Views
Last Modified: 2010-03-31
hi,

i've the following code snippet to grab the return URL of another site:
--------------------------
urlRemote = new URL(strURL);              
in = new BufferedReader(
new InputStreamReader(urlRemote.openStream()));
while ( (strLine = in.readLine() ) != null )
{
     vecReturn.add(strLine);
}
in.close();

---------------------------
when i reach the above piece of codes, i was thrown the java.io.FileNotFoundException.

can someone tell me what could possibly be wrong?
thanks.
0
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Question by:osiruz
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7 Comments
 
LVL 35

Expert Comment

by:girionis
ID: 7000683
 Well it is obvious that it cannot find the file. Are you sure that the file you are trying to access exists?
0
 

Author Comment

by:osiruz
ID: 7000849
im not familiar with this url grabber thing..
i do not understand the above code fully,
can someone help ? If i were to grab a particular URL response from another site, how can this be achieve?
0
 
LVL 35

Accepted Solution

by:
girionis earned 50 total points
ID: 7000885
 The URL class represents exactly this: a url that points to a resource on the Internet. You cannot use it to read a response from a server but rather you can read files, directories, database queries etc. Maybe this will help you: http://java.sun.com/products/jdk/1.2/docs/api/java/net/URL.html

> If i were to grab a particular URL response from another site, how can this be achieve?

 What exactly do you mean by this? Do you want to connect to a server and read the response back (using Sockets) or you would like to do server-side processing (using Servlets/JSP)?

>urlRemote = new URL(strURL);

  You create a new URL object by passing a String representation of the url. String could be anything like: http://www.yahoo.com
             
>in = new BufferedReader(new InputStreamReader(urlRemote.openStream()));

  Once the url object is created you open a connection to the url and you get an InputStream for reading from this url.

>while ( (strLine = in.readLine() ) != null )
>{
>    vecReturn.add(strLine);
>}

  While there is data coming from this url then you append everything in a collection object (Vector).

>in.close();

  You close the stream fro reading from the url.

  Hope it helps.
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Author Comment

by:osiruz
ID: 7000931
im not familiar with this url grabber thing..
i do not understand the above code fully,
can someone help ? If i were to grab a particular URL response from another site, how can this be achieve?
0
 

Author Comment

by:osiruz
ID: 7000936
thanks..i'll need some time to digest that.
thanks again for the response.
0
 

Author Comment

by:osiruz
ID: 7065483
Thanks for the help.
0
 
LVL 35

Expert Comment

by:girionis
ID: 7065503
 Not at all. I am glad I helped. :-)
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