public static void addALLToXML(Collection<Server> svr) throws IOException,
ParserConfigurationException, TransformerException
{
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory
.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory
.newDocumentBuilder();
Document document = documentBuilder.newDocument();
// Root Element
Element rootElement = document.createElement("Servers");
document.appendChild(rootElement);
for (Server i : svr)
{
// server elements
Element server = document.createElement("server");
rootElement.appendChild(server);
Element name = document.createElement("name");
name.appendChild(document.createTextNode(i.getName()));
server.appendChild(name);
Element port = document.createElement("port");
port.appendChild(document.createTextNode(Integer.toString(i.getPort())));
server.appendChild(port);
}
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult(
"/home/user/server.xml");
transformer.transform(source, result);
}
//This function below is what I need help with...
public static void addNodeToXML(String nameIn, String portIn)
throws ParserConfigurationException, SAXException, IOException
{
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory
.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory
.newDocumentBuilder();
/* parse existing file to DOM */
Document document = documentBuilder
.parse(new File(
"/home/user/server.xml"));
// Root Element
Element rootElement = document.createElement("Servers");
document.appendChild(rootElement);
// server elements
Element server = document.createElement("server");
rootElement.appendChild(server);
Element name = document.createElement("name");
name.appendChild(document.createTextNode(nameIn));
server.appendChild(name);
Element port = document.createElement("port");
port.appendChild(document.createTextNode(portIn));
server.appendChild(port);
}
Desired
Original:
something
port
New:
something
port
something
port
The following complete example will read an existing server.xml file from the current directory, append a new Server and re-write the file to server.xml. It does not work without an existing .xml file, so you will need to modify the code to handle that case.
import java.util.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import javax.xml.transform.dom.*;
import org.w3c.dom.*;
import javax.xml.parsers.*;
public class AddXmlNode {
public static void main(String[] args) throws Exception {
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document document = documentBuilder.parse("server.xml");
Element root = document.getDocumentElement();
// Root Element
Element rootElement = document.getDocumentElement();
Collection<Server> svr = new ArrayList<Server>();
svr.add(new Server());
for (Server i : svr) {
// server elements
Element server = document.createElement("server");
rootElement.appendChild(server);
Element name = document.createElement("name");
name.appendChild(document.createTextNode(i.getName()));
server.appendChild(name);
Element port = document.createElement("port");
port.appendChild(document.createTextNode(Integer.toString(i.getPort())));
server.appendChild(port);
root.appendChild(server);
}
DOMSource source = new DOMSource(document);
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
StreamResult result = new StreamResult("server.xml");
transformer.transform(source, result);
}
public static class Server {
public String getName() { return "foo"; }
public Integer getPort() { return 12345; }
}
}
xml version="1.0" encoding="UTF-8" standalone="yes"?>
something
port
You can parse the existing XML file into DOM and append new elements to
the DOM. Very similar to what you did with creating brand new XML. I am
assuming you do not have to worry about duplicate server. If you do have
to worry about that, you will have to go through the elements in the
DOM to check for duplicates.
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
/* parse existing file to DOM */
Document document = documentBuilder.parse(new File("exisgint/xml/file"));
Element root = document.getDocumentElement();
for (Server newServer : Collection<Server> bunchOfNewServers){
Element server = Document.createElement("server");
/* create and setup the server node...*/
root.appendChild(server);
}
/* use whatever method to output DOM to XML (for example, using transformer like you did).*/
|
|
answered
Jun 22 '11 at 20:19
|
|
|
|
|
|
To append a new data element,just do this...
Document doc = docBuilder.parse(is);
Node root=doc.getFirstChild();
Element newserver=doc.createElement("new_server");
root.appendChild(newserver);
easy.... 'is' is an InputStream object. rest is similar to your code....tried it just now...
|
|
answered
Mar 4 '12 at 19:02
|
|
|
|
|
|
If you need to insert node/element in some specific place , you can to do next steps
- Divide original xml into two parts
- Append your new node/element as child to first first(the first part
should ended with element after wich you wanna add your element )
- Append second part to the new document.
It is simple algorithm but should works...
|
|
answered
Jun 22 '11 at 20:10
|
|
|
|
Not the answer you're looking for?
Browse other questions tagged java xml
or ask your own question.
site design /
