Shortening URL in Java using Bitly

Shortening any url in Java using bitly API .
We need to get API key first using bit.ly account

In two ways we can do
1. By calling the bit.ly's REST API.
2. By using bitly core methods.

1. By calling the bit.ly's REST API

We need the following jars to work on

bitlyj-2[1].0.0
commons-httpclient-3.1
commons-codec-1.2
logging-1.0.4

Code to shorten the url

  HttpClient httpclient = new HttpClient();
  HttpMethod method = new GetMethod("http://api.bit.ly/shorten");
  NameValuePair[] valuePair=new NameValuePair[]{new NameValuePair("longUrl","http://www.sundarishree.blogspot.com/"),
    new NameValuePair("version","2.0.1"),
    new NameValuePair("login","YourUsername"),
    new NameValuePair("apiKey","YourApikey"),
    new NameValuePair("format","xml"),
    new NameValuePair("history","1")
  };
  method.setQueryString(valuePair);      
  try {
   httpclient.executeMethod(method);
  } catch (HttpException e) {  
   e.printStackTrace();
  } catch (IOException e) {  
   e.printStackTrace();
  }
  String responseXml =null;
  try {
    responseXml = method.getResponseBodyAsString();
  } catch (IOException e) { 
   e.printStackTrace();
  }
         System.out.println(responseXml);

When the above code is excuted we will get the output in following XML format


<bitly>
<errorCode>0</errorCode>
<errorMessage></errorMessage>
<results>
<nodeKeyVal>
<shortKeywordUrl></shortKeywordUrl>
<hash>bzXiN2</hash>
<userHash>ceCaRl</userHash>
<nodeKey><![CDATA[http://www.sundarishree.blogspot.com/]]></nodeKey>
<shortUrl>http://bit.ly/ceCaRl</shortUrl>
<shortCNAMEUrl>http://bit.ly/ceCaRl</shortCNAMEUrl>
</nodeKeyVal>
</results>
<statusCode>OK</statusCode>
</bitly>


Code to get the short url from XML output

 if(responseXml != null) {
  // parse the XML
  DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
  DocumentBuilder db = null;
  try {
   db = dbf.newDocumentBuilder();
  } catch (ParserConfigurationException e) {
   e.printStackTrace();
  }
  StringReader st = new StringReader(responseXml);
  Document d = null;
  String retVal=null;
  try {
   d = db.parse(new InputSource(st));
  } catch (SAXException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }
  NodeList nl = d.getElementsByTagName("shortUrl");  
  if(nl != null) {
   Node n = nl.item(0);
   retVal = n.getTextContent();
   System.out.println("Short URL >> "+retVal);
  }
 }

We can get the output as Short URL >>http://bit.ly/ceCaRl

2. By using bitly core methods

bitlyj-2[1].0.0 and commons-httpclient-3.1 jars are enough to use bitly core methods

Code to shorten the url

While importing Bitly mention as static

import static com.rosaloves.bitlyj.Bitly.*;
....
Provider bitly = Bitly.as("YourUserName", "YourApiKey");
ShortenedUrl info =bitly.call(shorten("http://www.visiontss.com/"));    
System.out.println("Shorten URL "+info.getShortUrl());

output : Shorten URL http://bit.ly/ahyvK0

Bulk Methods
Some bitly methods support multiple arguments.info and clicks for example can take an arbitrary number of hash
or shortUrl arguments. You can do this in bitlyj just like you'd expect:

 for(UrlInfo info1 : bitly.call(info("http://bit.ly/ceCaRl","http://bit.ly/ahyvK0"))) { 
 System.out.println("Created by        :"
                     +info1.getCreatedBy());
 System.out.println("ShortUrl          :"
                     +info1.getUrl());
 System.out.println("Title of the page :"
                     +info1.getTitle());
}

output :
Created by :sundarishree
ShortUrl :Url [shortBase=http://bit.ly/, globalHash=7haiBr, longUrl=, shortUrl=http://bit.ly/ahyvK0, userHash=ahyvK0]
Title of the page :Vision Tech Solutions - Software Product Development Company
Created by :sundarishree
ShortUrl :Url [shortBase=http://bit.ly/, globalHash=bzXiN2, longUrl=, shortUrl=http://bit.ly/ceCaRl, userHash=ceCaRl]
Title of the page :TECH.BLOG

You can know more in QuickStart

A Comfortable Online HTML Editor

A powerful Web-based WYSIWYG HTML editor that is designed for easy integration into our custom web applications

We can use this link for designing blog content HTML editor

rake aborted! Mysql::Error

When i tried to setup and migrate some objects in the MySQL DB with Ruby on Rails.   While executing the command  rake db:migrate ,i got the following error: error:        rake aborted!        Mysql::Error: query: not connected: CREATE TABLE `schema_migrations` (`version`varchar(255) NOT NULL) ENGINE=InnoDB (See full trace by running task with --trace) Using rake db:create database succesfully created. Solution to get rid of this issue   Step -1 To get rid of the issue copy the libmySQL.dll   Step -2 Paste it in C:\Ruby\bin of yours

Rails Application with MySQL DB

Follow the following step to work on rails application with mysql. 1: Our system should have the ruby installed .If not install the ruby from here 2: Start a Command prompt with Ruby C:\Ruby\bin 3: Enter the following command to install the special version of MySQL bindings.       gem install mysql You should expect a similar output like this:   Successfully installed mysql-2.8.1.1-x86-mingw32   1 gem installed 4: Enter the following command to install rails      gem install rails This is going to take a bit, since Rails and it’s dependencies takes around 2MB or so, and need to be downloaded and installed. Once done, expect see at the screen something like this:   Successfully installed activSupport-2.3.2   Successfully installed activerecord-2.3.2   Successfully installed actionpack-2.3.2   Successfully installed actionmailer-2.3.2   Successfully installed activeresource-2.3.2   Successfully installed rails-2.3.2   6 gems installed 5: Copy the libmySQL.dll file from here and paste it in your c:\ruby\bin location. 6: Create a rails application with mysql .Create a new Folder RailsPrg in C: In Command prompt switch to C:\RailsPrg> Let’s name our application appInMySQL       rails appInMySQL --database=mysql The --database option indicates to Rails that we want to use MySQL instead of the default database adapter (SQLite3). Rails will output a lot of lines when creating your application structure, just an excerpt of what to see:   ...    create config/database.yml    create config/routes.rb    create config/locales/en.yml    create config/initializers/backtrace_silencers.rb    create config/initializers/inflections.rb    create config/initializers/mime_types.rb    create config/initializers/new_rails_defaults.rb    create config/initializers/session_store.rb    create config/environment.rb    ... 7: Now Rails have configured for us the name of the database we want to use, and you can verify it in appInMySQL\config\database.yml In that database.yml file modify as you need in the development phase development:    adapter: mysql    encoding: utf8    reconnect: false    database: testMySql    pool: 5    username: username    password: password    host: hostname 8: In command prompt switch to C:\RailsPrg\appInMySQL> type the command       rake db:create Just that, simple db:create is going to connect to our MySQL server, and create the database for us. 9: Let’s verify that everything is in place, using the following command:      ruby script\about We can see the something like this as result: About your application's environment   Ruby version 1.9.1 (i386-mingw32)   RubyGems version 1.3.4   Rack version 1.0 bundled   Rails version 2.3.2   Active Record version 2.3.2   Action Pack version 2.3.2   Active Resource version 2.3.2   Action Mailer version 2.3.2   Active Support version 2.3.2   Application root C:\RailsPrg\appInMySQL   Environment development   Database adapter mysql   Database schema version 0 10: Now we can start generating the table for our application Command to create a table & generate the pages for performing operation like inserting, deleting & modifying Table name is cart     ruby script\generate scaffold cart cartId:integer productInCart:string Enter the migrate command     rake db:migrate 11: Command to start the server ruby script\server 12: Execute http://localhost:3000/carts/ =>You can see the application page & can refine further the application