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I want to read a file from a server which is in the different location.

I have an IP, username and password of the server.

How can i read a file in java?

whiterose
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  • It depends what protocol are you going to use. Is this an FTP enabled server? Is this a web server? Anything else? – 01es Jul 07 '11 at 05:36
  • possible duplicate of [Java: What is the best way to SFTP a file from a server](http://stackoverflow.com/questions/14617/java-what-is-the-best-way-to-sftp-a-file-from-a-server) – Suraj Chandran Jul 07 '11 at 05:39

2 Answers2

2

  • You can create a local FTP server and read remote file as byte array something like this

    try {
        URL url = new URL("ftp://localhost/myDir/fileOne.txt");
        InputStream is = url.openStream();
        ByteArrayOutputStream os = new ByteArrayOutputStream();                 
        byte[] buf = new byte[4096];
        int n;                  
        while ((n = is.read(buf)) >= 0) 
                os.write(buf, 0, n);
        os.close();
        is.close();                     
        byte[] data = os.toByteArray();
     } catch (MalformedURLException e) {
        e.printStackTrace();
     } catch (IOException e) {
        e.printStackTrace();
     }

  • Read the binary file through Http

    URL url = new URL("http://q.com/fileOne.txt");             
InputStream is = url.openStream();
Ronan Boiteau
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Piyush Mattoo
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-1

Rather than use Java, you should just use scp.

If there is a need to do this from Java, you can always form your scp command as a string and pass it to Runtime.getRuntime.exec(). (Be careful with passwords in your source code, though.)

Ray Toal
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