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Xml parser - Getting information inside comment

My objective is to acesse some information inside the xml commented code, in this case, the information inside the tag town.
For a html extract like this:
<script type="text/xml">
<!--
<world>
<city>
<town>
London
</town>
</city>
<city>
<town>
New York
</town>
</city>
</world>
-->
</script>
I want to get that "London" and "New York".
My code is:
doc.getDocumentElement().normalize();
System.out.println("Root element :" + doc.getDocumentElement().getNodeName());
NodeList nList = doc.getElementsByTagName("city");
System.out.println("----------------------------");
for (int temp = 0; temp < nList.getLength(); temp++) {
Node nNode = nList.item(temp);
if (nNode.getNodeType() == Node.ELEMENT_NODE) {
Element eElement = (Element) nNode;
System.out.println("Town : " + eElement.getElementsByTagName("Town").item(0).getTextContent());
}
}
Yet, this code does not work. BUT, if i remove the comments, it does. Why it doesn't work it comments, and how to fix it?
Thank you!

It doesn't work because the element isn't an element of xml in your example, rather it is part of a comment. Why would doc.getElementsByTagName("city"); parse and return xml nodes from comments?
You can read a bit more about it here

How to add nodes from another xml using xmlbeans

I am using xmlbeans to generate the xml document, while I need to extract all the children from another xml file and insert them to my current document.
The to_be_add.xml:
<root>
<style>
.....
</style>
<atlas img="styles/jmap.png">
....
</atlas>
.....
</root>
And this xml file does not have a schema so I do not create related java class to map it. You think it as a plain xml file.
I want the style atlas node added. I use the following codes:
XmlObject pointRoot = XmlObject.Factory.parse(Main.class.getResourceAsStream("to_be_added.xml"));
NodeList nodeList = pointRoot.getDomNode().getChildNodes();
Node themeNode = renderthemeDoc.getDomNode();
for (int i = 0; i < nodeList.getLength(); i++) {
Node node = nodeList.item(i);
themeNode.appendChild(node);
}
Then I got error:
Exception in thread "main"
org.apache.xmlbeans.impl.store.DomImpl$WrongDocumentErr: Child to add
is from another document
And I found this post by searching "child to .... another document": how to add a xml document to another xml document in java which said that the connection between the element and the document has to be broken between the element can be add to other document.
So I try to build the Document object(that is why the variable pointDoc and themeDoc exist):
XmlObject pointRoot = XmlObject.Factory.parse(Main.class.getResourceAsStream("to_be_added.xml"));
Document pointDoc = pointRoot.getDomNode().getOwnerDocument();
System.out.println(pointDoc);
Element element = pointDoc.getDocumentElement();
NodeList nodeList = element.getChildNodes();
Document themeDoc = myCurrentDoc.getDomNode().getOwnerDocument();
for (int i = 0; i < nodeList.getLength(); i++) {
Node node = nodeList.item(i);
node = themeDoc.importNode(node, true);
themeDoc.appendChild(node);
}
Then I got NullPointerException which said that the pointDoc is null.
That is the whole process how I try to solve this problem. If it is unclear, please tell me, I will update accordingly.
Is it possible to fix it?

Since your other XML file is not mapped to a class, you can use a regular DOM parser to read it and extract its nodes. But using a generic object factory you can still get the nodes:
XmlObject pointRoot = XmlObject.Factory.parse( "<root>\n" +
" <style>\n" +
" </style>\n" +
" <atlas img=\"styles/jmap.png\">\n" +
" </atlas>\n" +
"</root>");
Node pointDoc = pointRoot.getDomNode().getFirstChild();
NodeList nodeList = pointDoc.getChildNodes();
for(int i = 0; i < nodeList.getLength(); i++) {
System.out.println("Node: " + nodeList.item(i).getNodeName());
}
This will print:
Node: #text
Node: style
Node: #text
Node: atlas
Node: #text

Parsing XML file Using Java (DOM parser)

Ok, so I have been able to kind of parse through this xml file. But I am unable to get to the section I want.
http://www.faroo.com/api?q=iphone&start=1&length=10&l=en&src=news&f=rss
This is the URL to the xml because it looks very ugly just pasted on here. I have gone through this xml and have copied it to a file. The part that I need is the "title" in the first "item". I have gone through with this code:
System.out.println(myDocument.getElementsByTagName("item").item(0).getTextContent());
And this just prints all of the contents of the first "item", like "title" and "link" and "description" but I do not want all of it, I only want "title" to be printed. I have having problems getting it to work exactly right, but I feel like I am close. Any help will be appreciated. Thanks.

From the Oracle documentation on the org.w3c.dom package:
This attribute returns the text content of this node and its descendants.
Your code is calling getTextContent() on the item tag. If you modify your code so that it retrieves the text from the title tag, it works correctly.
System.out.println(myDocument.getElementsByTagName("item").item(0).getFirstChild().getTextContent());
Note that this relies on title being the first child tag in item. You may want to change this to a more order-independant solution.

Below is a code that iterates through the whole rss and gets all the titles, links and descriptions. You can create an object that has title, link and description as attributes and use it as you please:
try {
File fXmlFile = new File("api.xml");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(fXmlFile);
doc.getDocumentElement().normalize();
NodeList nList = doc.getElementsByTagName("item");
for (int temp = 0; temp < nList.getLength(); temp++) {
Node nNode = nList.item(temp);
if (nNode.getNodeType() == Node.ELEMENT_NODE) {
Element eElement = (Element) nNode;
System.out.println("title : " + eElement.getElementsByTagName("title").item(0).getTextContent());
System.out.println("link : " + eElement.getElementsByTagName("link").item(0).getTextContent());
System.out.println("description : " + eElement.getElementsByTagName("description").item(0).getTextContent());
}
}
} catch (Exception e) {
e.printStackTrace();
}
Hope that helps.

How do I get the tag 'Name' from a XML Node in Java (Android)

I have a tiny little problem parsing an XML file in Java (Android).
I have an XML file that is like this:
<Events>
<Event Name="Olympus Has Fallen">
...
</Event>
<Event Name="Iron Man 3">
...
</Event>
</Events>
I already managed to get the NodeList by doing this:
URL url = new URL("********");
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(new InputSource(url.openStream()));
doc.getDocumentElement().normalize();
NodeList nodeList = doc.getElementsByTagName("Event");
Also I managed to get every single item of the NodeList by doing this:
for (int i = 0; i < nodeList.getLength(); i++) {
// Item
Node node = nodeList.item(i);
Log.i("film", node.getNodeName());
}
But this just Logs: "Event" instead of the value of the Name tag.
How do I output the value of this 'name' tag from the XML.
Can anyone help me with this one?
Thanks in advance!

But this just Logs: "Event" instead of the value of the Name tag.
Yes, because you're asking for the name of the element. There isn't a Name "tag" - there's a Name attribute, and that's what you should find:
// Only check in elements, and only those which actually have attributes.
if (node.hasAttributes()) {
NamedNodeMap attributes = node.getAttributes();
Node nameAttribute = attributes.getNamedItem("Name");
if (nameAttribute != null) {
System.out.println("Name attribute: " + nameAttribute.getTextContent());
}
}
(It's very important to be precise in terminology - it's worth knowing the difference between nodes, elements, attributes etc. It will help you enormously both when communicating with others and when looking for the right bits of API to call.)

Java XML importNode function not working as expected

My XML looks like this.
I would like to "export" collected_objects into another document. Here is my code-
NodeList nList = reader.getElementsByTagName("collected_objects");
for (int temp = 0; temp < nList.getLength(); temp++) {
Node nNode = nList.item(temp);
output.importNode(nNode, true);
}
output refers to the new document I want to write to.
The code is not importing anything from source document. All I get is XML "header" - <?xml version="1.0" encoding="UTF-8" standalone="no"?>
I was expecting that since I've set deep to true, all of the child nodes will be imported but that is not happening.
What am I doing wrong?

importNode only imports the node to the document. You still have to append it somewhere using Node.appendNode(child)

use importNode using this way
Element rootElement = doc.getElementsByTagName("collected_objects");
doc.appendChild(rootElement);
for (Node n = iterator.nextNode(); n != null; n = iterator.nextNode()) {
rootElement.appendChild(doc.importNode(n, true));
}