provide-free-support Ujjwal's Blog: August 2013

Tuesday, August 6, 2013

Copying files over network shared folder using Java

Problem :: One of my blog reader posted a problem that he cannot copy files over a network shared folder using java.

Solution :: Java alone doesn't have support for networked file sharing. But if you use a library, like Samba, then you can. 

You can check below source code which successfully copies file from my local drive to a shared network folder ::

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package networkupload;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.MalformedURLException;
import java.net.URL;
import jcifs.Config;
import jcifs.smb.NtlmPasswordAuthentication;
import jcifs.smb.SmbFile;
import jcifs.smb.SmbFileOutputStream;

/**
 *
 * @author ujjwal
 */
public class NetworkUpload {

     public static void main(String[] args) throws IOException {
  final String userName = "Ujjwal";
  final String password = "ujjwal12345";
  final String domain = "ujjwal12345";
  //source path begins with / as i am using macbook (mac osx), in your case it will be windows drive path
  final String sourcePath = "/Developer/test.pdf";
  final String destinationPath = "smb://192.168.60.14/ftp/test.pdf";

  copyFileUsingJcifs(domain,userName, password, sourcePath, destinationPath);

  System.out.println("The file has been copied using JCIFS");
 }

 public static void copyFileUsingJcifs(final String domain,final String userName,
   final String password, final String sourcePath,
   final String destinationPath) throws IOException {


  final NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(
    domain, userName, password);
  final SmbFile sFile = new SmbFile(destinationPath, auth);
  final SmbFileOutputStream smbFileOutputStream = new SmbFileOutputStream(
    sFile);
  final FileInputStream fileInputStream = new FileInputStream(new File(
    sourcePath));

  final byte[] buf = new byte[16 * 1024 * 1024];
  int len;
  while ((len = fileInputStream.read(buf)) > 0) {
   smbFileOutputStream.write(buf, 0, len);
  }
  fileInputStream.close();
  smbFileOutputStream.close();
 }
  
}

If you face any issues implementing this code, you can contact me ::
Cheers,
Ujjwal Soni

Monday, August 5, 2013

Useful Java Utilities and Frameworks

There are so many useful Java frameworks and utilities out there that are free and open source that it boggles the mind. Here are a few of my recent favorites. Feel free to add your own to the list. There are many many more that I did not add to this list because they are very common (e.g. log4J, JUnit, etc.)
  • Joda Time Java Date/Time replacement
  • XStream “A simple library to serialize objects to XML and back again.”
  • Rome Java tools for parsing, generating and publishing RSS and Atom feeds.
  • Google Collections “a suite of new collections and collection-related goodness for Java 5.0, brought to you by Google. This library is a natural extension of the Java Collections Framework you already know and love. “
  • Google Guice (DI Framework) “Put simply, Guice alleviates the need for factories and the use of new in your Java code. Think of Guice’s @Inject as the new new. You will still need to write factories in some cases, but your code will not depend directly on them. Your code will be easier to change, unit test and reuse in other contexts.”
  • EasyMock “EasyMock provides Mock Objects for interfaces in JUnit tests by generating them on the fly using Java’s proxy mechanism.”
  • Apache Commons Tons of useful utilities for Java that I can’t pick just one.
  • GWT Java-Ajax web framework – very cool
  • JFreeChart “JFreeChart is a free 100% Java chart library that makes it easy for developers to display professional quality charts in their applications.”
  • Java Mozilla HTML Parser a wrapper around Mozilla’s HTML Parser.
  • Lucene “High-performance, full-featured text search engine library written entirely in Java.”
  • Squirrel SQL “Graphical Java program that will allow you to view the structure of a JDBC compliant database, browse the data in tables, issue SQL commands etc,”
  • NIO.2 Ok, technically not an open source framework. This is the new version of NIO that will be included in Java 7. This is what we’ll be using in place of File and many of the other classes in the java.io package. Pretty cool.
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