DZone Snippets: Ranjan_company's Code Snippets

RSS jsp taglib v 0.2

ranjan_company (ranjan) — Fri, 03 Nov 2006 18:08:03 GMT

// taglib to display rss in jsp page



package com.ranjan.feedreader;



/**

 * Created by IntelliJ IDEA.

 * User: Rapid

 * Date: Oct 9, 2006

 * Time: 3:18:23 PM

 * To change this template use File | Settings | File Templates.

 */

import java.net.URL;

import java.util.Iterator;

import java.util.HashMap;



import com.sun.syndication.feed.module.Module;

import com.sun.syndication.feed.synd.SyndEntry;

import com.sun.syndication.feed.synd.SyndFeed;

import com.sun.syndication.io.SyndFeedInput;

import com.sun.syndication.io.XmlReader;

import javax.servlet.jsp.JspContext;



import javax.servlet.jsp.tagext.Tag;

import javax.servlet.jsp.tagext.TagSupport;

import javax.servlet.jsp.JspException;



/* this tag should return the RSS feed as it is

 *it's purpose is to retrieve rss feeds

 *

 */



public class FeedReader extends TagSupport{



    private String url = null;











    SyndFeedInput input ;

    URL feedUrl;

    SyndFeed feed ;

    String html ;





    public String getUrl() {

        return url;

    }



    public void setUrl(String url) {

        this.url = url;

    }



    public int doStartTag() throws JspException {



        return EVAL_BODY_INCLUDE;    //To change body of overridden methods use File | Settings | File Templates.

    }



    public int doEndTag() throws JspException {









            try  {







                feedUrl  = new URL(url);



                input  = new SyndFeedInput();



                feed = input.build(new XmlReader(feedUrl));

/*

                String metaRSS = "Title: " + feed.getTitle() + "\n" +

                "Author: " + feed.getAuthor()  + "\n" +

                 "Description: " + feed.getDescription()  + "\n" +

                 "Pub date: " + feed.getPublishedDate()  + "\n" +

                 "Copyright: " + feed.getCopyright() ;



                 pageContext.getOut().write( metaRSS );

*/



                  html =



                        "" +

                        "" +

                            "" +

                        "" +

                            "" +

                            "" +

                        "" +

                         "" +

                            "" +

                        "" +



                        "" +

                            "" + feed.getTitle() +

                            "
" + feed.getDescription() +

                            "
" + feed.getCopyright() +

                            "

" ;


                                    //""                      

                                   for( Iterator iter = feed.getEntries().iterator(); iter.hasNext(); ){


                                   html +=  "" +

                                                   createHREF(((SyndEntry)iter.next()).getLink() , ((SyndEntry)iter.next()).getTitle() )  +

                                   //             "" +

                                            ""; 

                                   //((SyndEntry)iter.next()).getLink().toString()

                                    }


                        html +=

                                "
 " + /**/  + "                                   
 " + ((SyndEntry)iter.next()).getTitle()  + "
" +

                         "" +

                        "" ;





                pageContext.getOut().write( html );





            }

            catch (Exception ex) {

                ex.printStackTrace();

                System.out.println("ERROR: " + ex.getMessage());

            }













        return EVAL_PAGE;    //To change body of overridden methods use File | Settings | File Templates.

    }

    public String createHREF( String link, String value )

    {

        return  " " + value  + "";        

    }



}



//////////////////////////////////////////

tld     /////////////////////////////////

//////////////////////////////////////////

taglib for rss v 0.1

ranjan_company (ranjan) — Fri, 03 Nov 2006 12:38:54 GMT

// jsp taglibrary for rss



// the java code

package com.ranjan.feedreader;



/**

 * Created by IntelliJ IDEA.

 * User: Rapid

 * Date: Oct 9, 2006

 * Time: 3:18:23 PM

 * To change this template use File | Settings | File Templates.

 */

import java.net.URL;

import java.util.Iterator;

import java.util.HashMap;



import com.sun.syndication.feed.module.Module;

import com.sun.syndication.feed.synd.SyndEntry;

import com.sun.syndication.feed.synd.SyndFeed;

import com.sun.syndication.io.SyndFeedInput;

import com.sun.syndication.io.XmlReader;

import javax.servlet.jsp.JspContext;



import javax.servlet.jsp.tagext.Tag;

import javax.servlet.jsp.tagext.TagSupport;

import javax.servlet.jsp.JspException;



/* this tag should return the RSS feed as it is 

 *it's purpose is to retrieve rss feeds 

 *

 */



public class FeedReader extends TagSupport{



    private String url = null;



    



    

    

    SyndFeedInput input ;

    URL feedUrl;

    SyndFeed feed ;

    String html ;

    



    public String getUrl() {

        return url;

    }



    public void setUrl(String url) {

        this.url = url;

    }

    

    public int doStartTag() throws JspException {



        return EVAL_BODY_INCLUDE;    //To change body of overridden methods use File | Settings | File Templates.

    }



    public int doEndTag() throws JspException {









            try  {



    



                feedUrl  = new URL(url);



                input  = new SyndFeedInput();

                

                feed = input.build(new XmlReader(feedUrl));

/*

                String metaRSS = "Title: " + feed.getTitle() + "\n" +

                "Author: " + feed.getAuthor()  + "\n" +

                 "Description: " + feed.getDescription()  + "\n" +

                 "Pub date: " + feed.getPublishedDate()  + "\n" +

                 "Copyright: " + feed.getCopyright() ;



                 pageContext.getOut().write( metaRSS );

*/

               

                  html =       



                        "" +

                        "" +

                            "" + 

                        "" +

                            "" +

                            "" + 

                        "" +

                         "" +

                            "" + 

                        "" +



                        "" +

                            "" + feed.getTitle() + 

                            "
" + feed.getDescription() + 

                            "
" + feed.getCopyright() +

                            "                        
                                        
" ;


                                   for( Iterator iter = feed.getEntries().iterator(); iter.hasNext(); ){

                                   html +=  "" +

                                                "" +


                                                "" ;


                                   //((SyndEntry)iter.next()).getLink().toString() 

                                    }       


                        html += 

                                "                  
" +   

                                                    ((SyndEntry)iter.next()).getTitle() + "" + 



                                                "                                              
                                   
                   
" +

                         "" +                        

                        "" ;

                           

                

                pageContext.getOut().write( html );

                

                

            }

            catch (Exception ex) {

                ex.printStackTrace();

                System.out.println("ERROR: " + ex.getMessage());

            }





        



        

        

        return EVAL_PAGE;    //To change body of overridden methods use File | Settings | File Templates.

    }





}

//////////////////////////////////////////////////



//  the tld file 

//////////////////////////////////////////////////





  1.0

  rss

  /WEB-INF/tlds/rss

  

  

       rss

       com.ranjan.feedreader.FeedReader

       empty

          

            url

            true

            false

RSS Reader - Reads Name and URL into HashMap

ranjan_company (ranjan) — Mon, 30 Oct 2006 14:24:31 GMT

// description of your code here
// RSS reader for web reads them into HashMap







/**

 * Created by IntelliJ IDEA.

 * User: Rapid

 * Date: Oct 9, 2006

 * Time: 3:18:23 PM

 * To change this template use File | Settings | File Templates.

 */

import java.net.URL;

import java.util.Iterator;

import java.util.HashMap;



import com.sun.syndication.feed.module.Module;

import com.sun.syndication.feed.synd.SyndEntry;

import com.sun.syndication.feed.synd.SyndFeed;

import com.sun.syndication.io.SyndFeedInput;

import com.sun.syndication.io.XmlReader;



/**

 * Reads and prints any RSS/Atom feed type. Adopted from the example by the

 * same name at http://wiki.java.net/bin/view/Javawsxml/Rome05TutorialFeedReader

 *

 */

public class FeedReader {





    HashMap hm = null;

    String[][] rss = null ;

    SyndFeedInput input ;

    URL feedUrl;

    SyndFeed feed ;

    int count =-1;





    public HashMap readRSS(String url) {

        boolean readOk = false;



            try {



                hm = new HashMap();



               feedUrl  = new URL(url);



                input  = new SyndFeedInput();

                 feed = input.build(new XmlReader(feedUrl));



                System.out.println("Title: " + feed.getTitle());

                System.out.println("Author: " + feed.getAuthor());

                System.out.println("Description: " + feed.getDescription());

                System.out.println("Pub date: " + feed.getPublishedDate());

                System.out.println("Copyright: " + feed.getCopyright());

                System.out.println("Modules used:");







                String metaRSS = "Title: " + feed.getTitle() + "\n" +

                "Author: " + feed.getAuthor()  + "\n" +

                 "Description: " + feed.getDescription()  + "\n" +

                 "Pub date: " + feed.getPublishedDate()  + "\n" +

                 "Copyright: " + feed.getCopyright() ;









                rss = new String[ feed.getEntries().size()][2];





                System.out.println("Titles of the " + feed.getEntries().size() +

                                   " entries:");

                for (final Iterator iter = feed.getEntries().iterator();

                     iter.hasNext();)

                {













                    rss[++count][0] =      ((SyndEntry)iter.next()).getTitle().toString();









                }

                count = -1 ;

                for (final Iterator iter = feed.getEntries().iterator();

                     iter.hasNext();)

                {



                   rss[++count][1] =      ((SyndEntry)iter.next()).getUri().toString();

                }





                if (feed.getImage() != null)

                {

                    System.out.println("Feed image URL: " +

                                       feed.getImage().getUrl());

                }



                readOk = true;

                hm.put( feed.getTitle(), rss);

            }

            catch (Exception ex) {

                ex.printStackTrace();

                System.out.println("ERROR: " + ex.getMessage());

            }





        String[][] rs = (String[][])hm.get("LinuxInsider");



          System.out.println("************************");

        for( int i=0; i

            System.out.println( rs[i][0]);

             System.out.println( rs[i][1]);

//             System.out.println( rs[i][2]);

        }

        if (! readOk) {

            System.out.println();

            System.out.println("FeedReader reads and prints info on any RSS/Atom feed.");

            System.out.println("The first parameter must be the URL of the feed to read.");

            System.out.println();

        }



        return hm;

    }



}

RSS Reader - simple with Main

ranjan_company (ranjan) — Mon, 30 Oct 2006 14:23:10 GMT

// description of your code here
//Reads rss from given url







/**

 * Created by IntelliJ IDEA.

 * User: Rapid

 * Date: Oct 9, 2006

 * Time: 3:18:23 PM

 * To change this template use File | Settings | File Templates.

 */

import java.net.URL;

import java.util.Iterator;



import com.sun.syndication.feed.module.Module;

import com.sun.syndication.feed.synd.SyndEntry;

import com.sun.syndication.feed.synd.SyndFeed;

import com.sun.syndication.io.SyndFeedInput;

import com.sun.syndication.io.XmlReader;



/**

 * Reads and prints any RSS/Atom feed type. Adopted from the example by the

 * same name at http://wiki.java.net/bin/view/Javawsxml/Rome05TutorialFeedReader

 *

 */

public class FeedReader1 {



    public static void main(final String[] args) {

        boolean readOk = false;

        if (args.length == 1) {

            try {

                final URL feedUrl = new URL(args[0]);



                final SyndFeedInput input = new SyndFeedInput();

                final SyndFeed feed = input.build(new XmlReader(feedUrl));



                System.out.println("Title: " + feed.getTitle());

                System.out.println("Author: " + feed.getAuthor());

                System.out.println("Description: " + feed.getDescription());

                System.out.println("Pub date: " + feed.getPublishedDate());

                System.out.println("Copyright: " + feed.getCopyright());

                System.out.println("Modules used:");

                for (final Iterator iter = feed.getModules().iterator();

                     iter.hasNext();)

                {

                    System.out.println("\t" + ((Module)iter.next()).getUri());

                }

                System.out.println("Titles of the " + feed.getEntries().size() +

                                   " entries:");

                for (final Iterator iter = feed.getEntries().iterator();

                     iter.hasNext();)

                {

                    System.out.println("\t" +

                                       ((SyndEntry)iter.next()).getTitle());

                    

                }

                if (feed.getImage() != null)

                {

                    System.out.println("Feed image URL: " +

                                       feed.getImage().getUrl());

                }



                readOk = true;

            }

            catch (Exception ex) {

                ex.printStackTrace();

                System.out.println("ERROR: " + ex.getMessage());

            }

        }



        if (! readOk) {

            System.out.println();

            System.out.println("FeedReader reads and prints info on any RSS/Atom feed.");

            System.out.println("The first parameter must be the URL of the feed to read.");

            System.out.println();

        }

    }

}

Javascript Motion tween

ranjan_company (ranjan) — Mon, 30 Oct 2006 11:51:45 GMT

// description of your code here
// Motion tween



        "http://www.w3.org/TR/html4/loose.dtd">







  



  

  







    

        

            hi

Making a simple XMLHTTP Request

ranjan_company (ranjan) — Fri, 27 Oct 2006 16:34:56 GMT

// description of your code here
purpose : makes XMLHttpRequest
Requires : url





function makeRequest(url) {

        var http_request = false;

        url = url +  "?txt1=" + document.getElementById('first_no').value + '&' + "txt2=" + document.getElementById('second_no').value;

       

     if (window.XMLHttpRequest) { // Mozilla, Safari, ...

            http_request = new XMLHttpRequest();

            if (http_request.overrideMimeType) {

                http_request.overrideMimeType('text/xml');

                // See note below about this line

            }

        } else if (window.ActiveXObject) { // IE

            try {

                http_request = new ActiveXObject("Msxml2.XMLHTTP");

            } catch (e) {

                try {

                    http_request = new ActiveXObject("Microsoft.XMLHTTP");

                } catch (e) {}

            }

        }



        if (!http_request) {

            alert('Giving up :( Cannot create an XMLHTTP instance');

            return false;

        }

        http_request.onreadystatechange = function() { alertContents(http_request); };

        http_request.open('GET', url, true );

        

        http_request.send(null);



    }



    function alertContents(http_request) {



        if (http_request.readyState == 4) {

            if (http_request.status == 200) {



              document.getElementById('spid').innerHTML = http_request.responseText ;



            } else {

                alert('There was a problem with the request.');



            }

        }



    }