You have to parse the
inputstream of the sample.xml from the another java program..or you can
do within the below java file too.[in parse(...) method]
All the data are put in a ArrayList of Feed class. you can have access to it once parsing is done.
3 overriden methods to be focused are:
All the data are put in a ArrayList of Feed class. you can have access to it once parsing is done.
3 overriden methods to be focused are:
1)
startElement()
2)
endElement()
3)
characters()
Rest
of the code is self explanatory and hope you would be interested in code than
paragraphs :P
============= Java file =======================
import java.io.InputStream;
import
java.util.ArrayList;
import
java.util.Hashtable;
import
javax.xml.parsers.SAXParser;
import
javax.xml.parsers.SAXParserFactory;
import
org.xml.sax.Attributes;
import
org.xml.sax.helpers.DefaultHandler;
/**
*
* @author chandan,Jun
22, 2013,11:26:05 AM
*/
public class Parser extends DefaultHandler
{
private static final String TAG = Parser.class.getSimpleName();
private Feed feed;
private StringBuilder text;
private Item item;
/**
* Default constructor.
*
* chandan,Jun 22, 2013,11:32:05 AM
*/
public Parser() {
//Intialize
here.
this.text = new
StringBuilder();
}
/**
* Call this method with stream to parse.
* @param
urlInputStream
* chandan,Jun 22, 2013,11:27:04 AM
*/
public void
parse(InputStream urlInputStream) {
SAXParserFactory spf = null;
SAXParser sp = null;
try {
spf = SAXParserFactory.newInstance();
if (spf != null)
{
sp = spf.newSAXParser();
sp.parse(urlInputStream, this);
}
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
try
{
if (urlInputStream
!= null)
urlInputStream.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
/**
* use this method to get an instance of
the Feed to
*
access the ArrayList which holds parsed data
* @return Feed
*/
public Feed getFeed()
{
return (this.feed);
}
@Override
public void
startElement(String uri, String localName, String qName,
Attributes attributes) {
if (qName.equalsIgnoreCase("root")) {
this.feed = new Feed();
}
else if
(qName.equalsIgnoreCase("item") && (this.feed != null)) {
this.item = new Item();
this.feed.addItem(this.item);
}
// if a TAG has one or more than one
attribute, then..
int attLength =
attributes.getLength();
if (attLength > 0) {
for (int i = 0; i <
attLength; i++) {
String attName =
attributes.getLocalName(i);
String attValue =
attributes.getValue(i);
if
(attName.equalsIgnoreCase("value")&& this.item.subheaderCount< 2)
{
this.item.subheaderCount++;
this.item.lists.put("subheader
"+ this.item.subheaderCount,attValue);
}
else if
(attName.equalsIgnoreCase("attribute2") &&
attValue.equalsIgnoreCase("yes"))
{
this.item.lists.put("attribute2",
attributes.getValue(i));
/*
for previous
attribute: attributes.getValue(i-1)
*/
}
}// End of for loop
}
}
@Override
public void
endElement(String uri, String localName, String qName) {
if (this.feed == null) {
return;
}
if (qName.equalsIgnoreCase("item")){
this.item = null;
}else if
(qName.equalsIgnoreCase("header")) {
if (this.item != null){
this.item.lists.put("header", this.text.toString().trim());
}
}
//Finally reset text's length
this.text.setLength(0);
}
@Override
public void characters(char[] ch, int start, int length) {
this.text.append(ch,
start, length);
}
/**
* Model class for Feed.
*
* @author chandan,Jun
22, 2013,11:30:33 AM
*/
public static class Feed {
/* You can make public so that you can
access directly upon parsing..*/
private
ArrayList<Item> items;
public void addItem(Item
item) {
if (this.getItems() == null)
this.setItems(new
ArrayList<Item>());
this.getItems().add(item);
}
public void setItems(ArrayList<Item>
items) {
this.items = items;
}
public
ArrayList<Item> getItems() {
return items;
}
}
/**
* Model class for Item.
*
* @author chandan,Jun
22, 2013,11:30:25 AM
*/
public static class Item {
public int subheaderCount;
public Hashtable
lists = new Hashtable();
public static int optionCount;
Item() {
optionCount = 0;
lists.put("header", new String());
/*
for integer...Do not forget to parse from string to
int--->lists.put("intData", new Integer(0)); */
lists.put("subheader
1", new String());
lists.put("subheader
2", new String());
lists.put("attribute2", new String());
}
}
}
============== sample.xml file ==================
<root>
<item>
<header>Your header here..</header>
<subheader value="1st subheader value here ">
</subheader >
<subheader value="2nd subheader vslue here" attribute2="yes">
</subheader >
</item>
<item>
.
.
.
.
</item>
.
.
.
.
</root>
=============== End =======================
============== sample.xml file ==================
<root>
<item>
<header>Your header here..</header>
<subheader value="1st subheader value here ">
</subheader >
<subheader value="2nd subheader vslue here" attribute2="yes">
</subheader >
</item>
<item>
.
.
.
.
</item>
.
.
.
.
</root>
=============== End =======================
Happy coding :)
