I want to know how to delete and edit data from an XML file by use of JSP. I have XML file having tasks(root node),task id,project,date(as child nodes). I have many tasks stored in the xml file,I want to delete and edit some tasks using task id then how can i do it in JSP.Please help with example if any.Thank you XML file : tasks.XML::
<?xml version = '1.0' encoding = 'UTF-8'?>
<Tasks>
<task>
<Taskid>1</Taskid>
<Taskname>Coding</Taskname>
<Project>CeMIC</Project>
<Date>21 February</Date>
</task>
<task>
<Taskid>2</Taskid>
<Taskname>Testing</Taskname>
<Project>Blackberry</Project>
<Date>2 march</Date>
</task>
<task>
<Taskid>3</Taskid>
<Taskname>Integration</Taskname>
<Project>Assinment JSP</Project>
<Date>23 march</Date>
</task>
<task>
<Taskid>4</Taskid>
<Taskname>Implementation</Taskname>
<Project>CMIC</Project>
<Date>7 april</Date>
</task>
<task>
<Taskid>5</Taskid>
<Taskname>Maintainance</Taskname>
<Project>CMIC</Project>
<Date>7 april</Date>
</task>
</Tasks>
I have a java program to remove element but i want to know how to remove by providing element attribute (like task id) and deleting all data IN JSP?
RemoveElement.java: I want it in jsp
import java.io.*;
import org.w3c.dom.*;
import org.xml.sax.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
public class RemoveElement {
static public void main(String[] arg) {
try{
BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
System.out.print("Enter a XML file name: ");
String xmlFile = bf.readLine();
File file = new File(xmlFile);
System.out.print("Enter an element which have to delete: ");
String remElement = bf.readLine();
if (file.exists()){
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(xmlFile);
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer tFormer = tFactory.newTransformer();
Element element = (Element)doc.getElementsByTagName(remElement).item(0);
// Remove the node
element.getParentNode().removeChild(element);
// Normalize the DOM tree to combine all adjacent nodes
doc.normalize();
Source source = new DOMSource(doc);
Result dest = new StreamResult(System.out);
tFormer.transform(source, dest);
System.out.println();
}
else{
System.out.println("File not found!");
}
}
catch (Exception e){
System.err.println(e);
System.exit(0);
}
}
}