How to display XML File in JSP?

[ujjvalpandya]

Hi

I have one XML file. Its actualy a RSS file. I wnat to display my RSS in JSP and then when i will open that JSP, my RSS reader which is inbuilt in my Explorer, will display the XML file.

How to acieve it? I think MIME can be used. But not able to find much about it. How cna i do it ?

[PeejAvery]

[ moved ]

[Xeel]

This is one of many manual ways to do it (sry for php tag, but the code looks more readable this way):

import java.net.URL;
import java.io.File;
import java.util.ArrayList;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class test {
    public static void main(String[] args){
        
        ArrayList<String[]> rssItems = getRSSitems();
        for(int i=0; i<rssItems.size(); i++){
            String[] rssItem = rssItems.get(i);
            System.out.println("title: "+rssItem[0]);
            System.out.println("description: "+rssItem[1]);
            System.out.println("link: "+rssItem[2]);
            System.out.println("guid: "+rssItem[3]);
            System.out.println("pubDate: "+rssItem[4]);
            System.out.println("category: "+rssItem[5]);
            System.out.println("IMG attrubutes: width="+rssItem[6]+
                               ", height="+rssItem[7]+", url="+rssItem[8]+"\n");
        }
    }
    
    private static ArrayList<String[]> getRSSitems(){
        
        ArrayList<String[]> rssItems = new ArrayList<String[]>();
        DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
        
        try{
            DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
            
            //remote rss xml
            URL url = new URL("http://newsrss.bbc.co.uk/rss/sportonline_world_edition/front_page/rss.xml");
            Document doc = docBuilder.parse(url.openStream());
            
            /*
            //local rss xml
            File f = new File("[localPath]/rss.xml");
            Document doc = docBuilder.parse(f);
            */
            
            doc.getDocumentElement().normalize();
            
            //list xml by tags (this is not a generic solution
            //so we must know exact rss xml structure)
            NodeList nlItems = doc.getElementsByTagName("item");
            int totalItems = nlItems.getLength();
            //System.out.println("Total # of items: " + totalItems);
            
            for(int i=0; i<totalItems; i++){
                Node tableNode = nlItems.item(i);
                if(tableNode.getNodeType() == Node.ELEMENT_NODE){
                    String[] rssItem = new String[9];
                    Element tableElement = (Element)tableNode; 
    
                    NodeList nodeList = tableElement.getElementsByTagName("title");
                    Element element = (Element)nodeList.item(0);
                    NodeList textList = element.getChildNodes();
                    rssItem[0] = ((Node)textList.item(0)).getNodeValue().trim();
                    
                    nodeList = tableElement.getElementsByTagName("description");
                    element = (Element)nodeList.item(0);
                    textList = element.getChildNodes();
                    rssItem[1] = ((Node)textList.item(0)).getNodeValue().trim();
                    
                    nodeList = tableElement.getElementsByTagName("link");
                    element = (Element)nodeList.item(0);
                    textList = element.getChildNodes();
                    rssItem[2] = ((Node)textList.item(0)).getNodeValue().trim();
    
                    nodeList = tableElement.getElementsByTagName("guid");
                    element = (Element)nodeList.item(0);
                    textList = element.getChildNodes();
                    rssItem[3] = ((Node)textList.item(0)).getNodeValue().trim();
                    
                    nodeList = tableElement.getElementsByTagName("pubDate");
                    element = (Element)nodeList.item(0);
                    textList = element.getChildNodes();
                    rssItem[4] = ((Node)textList.item(0)).getNodeValue().trim();
                    
                    nodeList = tableElement.getElementsByTagName("category");
                    element = (Element)nodeList.item(0);
                    textList = element.getChildNodes();
                    rssItem[5] = ((Node)textList.item(0)).getNodeValue().trim();
                    
                    nodeList = tableElement.getElementsByTagName("media:thumbnail");
                    element = (Element)nodeList.item(0);
                    rssItem[6] = element.getAttribute("width");
                    rssItem[7] = element.getAttribute("height");
                    rssItem[8] = element.getAttribute("url");
                    
                    rssItems.add(rssItem);
                }
                
            }
        }catch(Exception e){
            System.out.println(e.toString());
            e.printStackTrace(System.out);
        }
        return rssItems;
    }
} 

Forget about heavy trinkets like Sun RSS Utilities, they are buggy, they are too generic.

[compavalanche]

If I understand the original post correctly then you just want to set the Content-type header to text/xml

Then print out your xml with nothing else.

Hope that helps...