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Dec 13th, 2008

help me to read a file from another machine in the network.

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haii
I have a requirement in which i want to read a file from another
machine in the network.
I want to know how to set the URL

Thanks in advance

ajithraj

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Dec 13th, 2008

Re: help me to read a file from another machine in the network.

And how exactly is the target file shared on the network ?? FTP, HTTP ?? or just by SMB (Windows Sharing) ??

You need to divulge more details as to what exactly are you trying to achieve.

Also although I know its useless saying this but still read this essay and learn how to frame your questions on a forum like this, it is you who will benefit most because if you ask questions correctly or ask the correct questions, more people will feel like answering to your query.

Last edited by stephen84s; Dec 13th, 2008 at 9:28 am.

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Dec 13th, 2008

Re: help me to read a file from another machine in the network.

As mentioned above how is the file shared ? But more importantly whats this got to do with Java ? Please put your question in proper context so that we are able to understand and in turn help you better.

verruckt24

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Dec 15th, 2008

Re: help me to read a file from another machine in the network.

really Sorry .....and thanks for answering me....

I want to read an image from a machine in network using http...
Actually my need is to read the image from a system and to store this in another one
I know that it can be done only by setting the Url..

///verruckt24:::But more importantly whats this got to do with Java ?
I dont understand this...i want to access this from a java class

ajithraj

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Dec 15th, 2008

Re: help me to read a file from another machine in the network.

Quote originally posted by ajithraj ...

///verruckt24:::But more importantly whats this got to do with Java ?
I dont understand this...i want to access this from a java class

Verruckt asked that because you simply had forgotten to mention that fact.

Quote originally posted by ajithraj ...

I know that it can be done only by setting the Url..

I do not what you are talking about here, but to access files over HTTP you will definitely be needing the URL and URLConnection classes. They can be used connect to URLs over an HTTP connection.

Here is an example that deals with text files.

stephen84s

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Dec 15th, 2008

Re: help me to read a file from another machine in the network.

Thanksss.. But i still have problems..

The code i wrote is :::
URL hp = new URL("http", "www.rediff.com", 80, "/");
URLConnection hpCon = hp.openConnection();

but hpCon.getContentLength() = -1....
It means that No Content is Available....

why this happens...

ajithraj

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Re: help me to read a file from another machine in the network.

To quote the Javadocs of URLConnection to which I had already linked to in the previous post :

Quote ...

1. The connection object is created by invoking the openConnection method on a URL.
2. The setup parameters and general request properties are manipulated.
3. The actual connection to the remote object is made, using the connect method.
4. The remote object becomes available. The header fields and the contents of the remote object can be accessed.

So you need to first connect and then check whether the content is available.

Last edited by stephen84s; Dec 15th, 2008 at 2:58 am.

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Dec 15th, 2008

Re: help me to read a file from another machine in the network.

java Syntax (Toggle Plain Text)
public void  URLReader(){
       try{
            URL logic = new URL("http://your host name & port number/folder/");
            BufferedReader in = new BufferedReader(new InputStreamReader(logic.openStream()));
 
            String inputLine;
 
            while ((inputLine = in.readLine()) != null)
                System.out.println(inputLine);
 
            in.close();
      }
      catch (MalformedURLException e) {
            System.out.println ("Malformed URL= "+e);
       }    
        catch (IOException e) {
       System.out.println ("IO Exception = "+e);
 
    }
 
Albert    
}
public void  URLReader(){
       try{
            URL logic = new URL("http://your host name & port number/folder/");
            BufferedReader in = new BufferedReader(new InputStreamReader(logic.openStream()));

            String inputLine;
      
            while ((inputLine = in.readLine()) != null)
                System.out.println(inputLine);

            in.close();
      }
      catch (MalformedURLException e) {
            System.out.println ("Malformed URL= "+e);
       }    
        catch (IOException e) {
       System.out.println ("IO Exception = "+e);
      
    }
       
Albert    
}

Last edited by cscgal; Dec 15th, 2008 at 6:08 pm. Reason: Added code tags

AlbertPi

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Dec 15th, 2008

Re: help me to read a file from anothermachine in the network.

AlbertPi, please use [code] [/code] tags if you are going to post code examples.

Ezzaral

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Dec 16th, 2008

Re: help me to read a file from another machine in the network.

okk...this is what i too is trying now..but since my connection is through a proxy server i want to add its IP..but the problem is that how can i get the IP adress of my proxy server...

Thanks..

ajithraj

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