DOM - XML File

Hi,
Another question I had is pretty simple, and I'm sure it's documented somewhere, but I can't seem to find it.
If I have parsed an XML file using DOM (thus have a master context), how do I write the DOM back to an XML file?
Thanks,
Mark

print() method on XMLDocument.
e.g. to Print the document to
a printwriter do:
myDocument.print(myPrintWriter);
If myDocument is of type "Document" (DOM)
then you need to cast it to XMLDocument:
((XMLDocument)myDocument).print(myPrintWriter);
since printing functionality is not specified in the core DOM interfaces.

Similar Messages

DOM xml file, reading

I have an XML file I am parsing, or trying to parse. I can get the Document object but how do you traverse the elements?? It seems simple but the Node methods are somewhat vague in what they return, per the Javadoc. I've tried trial and error to much frustration and very little success...
is there an easy way to traverse the xml elements in a DOM Document object? I'm using the org.w3c package for most of what I'm doing...
I'm sure this is just a few lines of code but it's been driving me crazy.

from the document you would do,,
Element e = document.getDocumentElement();
From there you have two choices, you can navigate strictly via the tree with, calls of
Element child = e.getFirstChild();
while (child != null)
//do something
child = child.getNextSibling();
or you can collect all the Elements that have a certain tag, as in
NodeList list = e.getElementsByTagName( "MyElementName" );

Writting a XML file from a DOM with the reference to a DTD

Hi everyone,
how can I write a XML file, that has a reference to a DTD like:
<!DOCTYPE testdoc SYSTEM "testdoc.dtd">
I have a DOM that contains my XML-Data and I want to have this line in the XML File. I'm using a Transformer to write this XML stuff in the file.
Does anyone has an idea?
Thanks in advance
Andi

http://java.sun.com/j2se/1.4.2/docs/api/javax/xml/transform/OutputKeys.html
transformer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM, "testdoc.dtd");

Help with creating a new XML file from an existing DOM tree!!

i want to create a new XML file from an existing DOM tree
i used this code to create a new document:
static public Document createDocument(String fileName) throws ParserConfigurationException//,IOException,SAXException
          try {
               DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
               factory.setIgnoringComments(true);
               factory.setIgnoringElementContentWhitespace(true);
               factory.setValidating(true);
               DocumentBuilder builder =factory.newDocumentBuilder();
               return builder.newDocument();
//          handle exception creating DocumentBuilder
          catch ( ParserConfigurationException parserError ) {
                    throw new ParserConfigurationException();
          }then i used this code to transform the DOM :
public void exportDocument(Document document) {
          try {
               Source xmlSource = new DOMSource( document );
               Result result = new StreamResult( System.out );
               TransformerFactory transformerFactory =
                    TransformerFactory.newInstance();
               Transformer transformer =transformerFactory.newTransformer();
               transformer.setOutputProperty( "indent", "yes" );
               transformer.transform( xmlSource, result );
       //then catching the exceptions
But the file was not created and i didn't find where can i specify the DTD that the XML file should use and where can i enter the name of the XML file itself
Another questoin can i write a DTD file dynamically during the execution of the program??

Cross-post: http://forum.java.sun.com/thread.jspa?threadID=784467&messageID=4459240#4459240

How to Create XML file with SAX parser instead of DOM parser

HI ALL,
I am in need of creating an XML file by SAX parser ONLY. As far as my knowledge goes, we can use DOM for such purpose(by using createElement, creatAttribute ...). Can anyone tell me, is there any way to create an XML file using SAX Parser only. I mean, I just want to know whether SAX provides any sort of api for Creatign an element, attribute etc. I know that SAX is for event based parsing. But my requirement is to create an XML file from using only SAX parser.
Any help would be appreciated
Thanx in advance
Kaushik

Hi,
You must write a XMLWriter class yourself, and that Class extends DefaultHandle ....., the overwrite the startElement(url, localName, qName, attributeList), startDocument(), endElement().....and so on.
in startElement write your own logic about how to create a new element and how to create a Attribute list
in startDocument write your own logic about how to build a document and encodeType, dtd....
By using:
XMLWriter out = new XMLWriter()
out.startDocument();
Attribute attr1 = new Atribute();
attr1.add("name", "value");
out.startElement("","","Element1", attr1);
Attribute attr2 = new Atribute();
attr2.add("name", "value");
out.startElement("","","Element2", attr2);
out.endElement("","","Element2");
out.endElement("","","Element1");
out.endDocument();

Generate an XML file from a DOM tree

Hi,
I'm trying to generate an XML file from a DOM tree that I obtained from another XML file with the Xerces library. I used the following operation :
public static void writeXmlFile(Document doc, String filename) {
try {
Source source = new DOMSource(doc);
File file = new File(filename);
Result result = new StreamResult(file);
Transformer xformer = TransformerFactory.newInstance().newTransformer();
xformer.transform(source, result);
} catch (TransformerConfigurationException e) {
System.err.println(e);
System.exit(1);
} catch (TransformerException e) {
System.err.println(e);
System.exit(1);
But I have this Windows/Linux problem. When I execute this on Windows, everything is correct. But if I try on Linux (every distribution does the same thing), I obtain an XML file where everything is written on just ONE LINE : there is neither identation nor carriage return at the end of a line ... And that is pretty annoying 'cause I need to SEE what I generate ...
Thanks for your answer,
Blueberryfin.

Actually I would think that no indents and no new-lines would be more correct, but maybe it's an option for parsers to do it either way if you don't specify it. If you want to specify it, look at this post from last month:
http://forum.java.sun.com/thread.jsp?forum=34&thread=383400

Parsing an xml file using xerces DOM parser

Hi
I want to parse a simple xml file using DOM parser.
The file is
<Item>
     <SubItem>
          <title>SubItem0</title>
          <attr1>0</attr1>
          <attr2>0</attr2>
          <attr3>0</attr3>
     </SubItem>
     <SubItem>
          <title>SubItem1</title>
          <attr1>1</attr1>
          <attr2>0</attr2>
          <attr3>0</attr3>
     </SubItem>
     <SubItem>
          <title>SubItem2</title>
          <attr1>1</attr1>
          <attr2>1</attr2>
          <attr3>0</attr3>
          <SubItem>
               <title>SubItem20</title>
               <attr1>2</attr1>
               <attr2>1</attr2>
               <attr3>0</attr3>
          </SubItem>
          <SubItem>
               <title>SubItem21</title>
               <attr1>1</attr1>
               <attr2>1</attr2>
               <attr3>0</attr3>
          </SubItem>
     </SubItem>
</Item>
I just want to parse this file and want to store the values in desired datastructures,
I am trying using DOM parser, since it gives a tree structure, which is ok in this case.
public void init()
          InputReader ir     =new InputReader("Habsys");
          Document      doc     =ir.read("Habitat");
          System.out.println(doc);
          traverse(doc);
private void traverse(Document idoc)
          NodeList lchildren=idoc.getElementsByTagName("SubItem");
          for(int i=0;i<lchildren.getLength();i++)
               String lgstr=lchildren.item(i).getNodeName();
               if(lgstr.equals("SubItem"))
                    traverse(lchildren.item(i));
private void traverse (Node node) {
int type = node.getNodeType();
if (type == Node.ELEMENT_NODE)
System.out.println ("Name :"+node.getNodeName());
if(!node.hasChildNodes())
System.out.println ("Value :"+node.getNodeValue());
NodeList children = node.getChildNodes();
if (children != null) {
for (int i=0; i< children.getLength(); i++)
traverse (children.item(i));
But I am not getting required results, a lot of values I am getting as null
Could anybody tell me how to retrieve the data from the xml file, I simply want to read data and store it in data structures. For eg, for tag Subitem with title as ' SubItem1' has attr1 as '1', attr2 as'0' and attr3 as '0'.
Thanks
Gaurav

Check This Sample Code....
public void amethod(){
DocumentBuilderFactory dbf = null;
DocumentBuilder docBuilder = null;
Document doc = null;
try{
     dbf = DocumentBuilderFactory.newInstance();
     db = dbf.newDocumentBuilder();
     doc = db.parse(New File("path/to/your/file"));
     Node root = doc.getDocumentElement();
     System.out.println("Root Node = " + root.getNodeName());
     readNode(root);
}catch(FactoryConfigurationError fce){ fce.printStackTrace();
}catch(ParserConfigurationException pce){ pce.printStackTrace();
}catch(IOException ioe){ ioe.printStackTrace();
}catch(SAXException saxe){ saxe.printStackTrace();
private void readNode(Node node) {
System.out.println("Current Node = " + node.getNodeName());
readAttributes(node);
readChildren(node);
private void readAttributes(Node node) {
if (!node.hasAttributes())
     return;
System.out.println("Attributes:");
NamedNodeMap attrNodes = node.getAttributes();
for (int i=0; i<attrNodes.getLength(); i++) {
Attr attr = (Attr)attrNodes.item(i);
System.out.println(attr.getNodeName() + " => " + attr.getNodeValue());
private void readChildren(Node node) {
if (!node.hasChildNodes())
     return;
System.out.println("Value/s:");
NodeList childNodes = node.getChildNodes();
for (int i=0; i<childNodes.getLength(); i++) {
Node child = (Node)childNodes.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE) {
readNode(child);
continue;
if (child.getNodeType() == Node.TEXT_NODE) {
if (child.getNodeValue()!=null)
System.out.println(child.getNodeValue());

Reading from XML file using DOM parser.

Hi,
I have written the following java code to read the XML file and print the values. It reads the XML file. It gets the node NAME and prints it. But it returns null when trying to get the node VALUE. I am unable to figure out why.
Can anyone please help me with this.
Thanks and Regards,
Shweta
import java.io.*;
import java.net.*;
import java.util.*;
import oracle.xml.parser.v2.*;
import org.w3c.dom.*;
import org.xml.sax.SAXException;
public class ReadNodes
private static XMLDocument mDoc;
public ReadNodes () {
     try {
DOMParser lParser = new DOMParser();
URL lUrl = createURL("mot.xml");
System.out.println("after creating the URL object ");
lParser.setErrorStream(System.out);
lParser.showWarnings(true);
lParser.parse(lUrl);
mDoc = lParser.getDocument();
     System.out.println("after creating the URL object "+mDoc);
lParser.reset();
} catch (Exception e) {
e.printStackTrace();
} // end catch block
} // End of constructor
public void read() throws DOMException {
try {
     NodeList lTrans = this.mDoc.getElementsByTagName("TRANSLATION");
     for(int i=0;i<lTrans.getLength();i++) {
          NodeList lTrans1 = lTrans.item(i).getChildNodes();
          System.out.println("lTrans1.item(0).getNodeName : " + lTrans1.item(0).getNodeName());
          System.out.println("lTrans1.item(0).getNodeValue : " + lTrans1.item(0).getNodeValue());
          System.out.println("lTrans1.item(1).getNodeName : " + lTrans1.item(1).getNodeName());
          System.out.println("lTrans1.item(1).getNodeValue : " + lTrans1.item(1).getNodeValue());
     } catch (Exception e) {
     System.out.println("Exception "+e);
     e.printStackTrace();
     } catch (Throwable t) {
          System.out.println("Exception "+t);
public static URL createURL(String pFileName) throws MalformedURLException {
URL url = null;
try {
url = new URL(pFileName);
} catch (MalformedURLException ex) {
File f = new File(pFileName);
String path = f.getAbsolutePath();
String fs = System.getProperty("file.separator");
System.out.println(" path of file : "+path +"separator " +fs);
if (fs.length() == 1) {
char sep = fs.charAt(0);
if (sep != '/')
path = path.replace(sep, '/');
if (path.charAt(0) != '/')
path = '/' + path;
path = "file://" + path;
System.out.println("path is : "+path);
// Try again, if this throws an exception we just raise it up
url = new URL(path);
} // End catch block
return url;
} // end method create URL
public static void main (String args[]) {
     ReadNodes mXML = new ReadNodes();
     mXML.read();
The XML file that I am using is
<?xml version = "1.0"?>
<DOCUMENT>
<LANGUAGE_TRANS>
<TRANSLATION>
<CODE>3</CODE>
<VALUE>Please select a number</VALUE>
</TRANSLATION>
<TRANSLATION>
<CODE>5</CODE>
<VALUE>Patni</VALUE>
</TRANSLATION>
<TRANSLATION>
<CODE>6</CODE>
<VALUE>Status Messages</VALUE>
</TRANSLATION>
<TRANSLATION>
<CODE>7</CODE>
<VALUE>Progress</VALUE>
</TRANSLATION>
<TRANSLATION>
<CODE>8</CODE>
<VALUE>Create Data Files...</VALUE>
</TRANSLATION>
<TRANSLATION>
<CODE>9</CODE>
<VALUE>OK</VALUE>
</TRANSLATION>
</LANGUAGE_TRANS>
</DOCUMENT>

because what you want is not the node value of CODE but the node value of the text nodes into it!
assuming only one text node into it, try this:
System.out.println("lTrans1.item(0).getNodeName : " + lTrans1.item(0).getFirstChild().getNodeValue());

How to get nodes and its attributes of an XML file usiong DOM parsing?

how to get nodes and its attributes of an XML file usiong DOM parsing?
i am new to XML parsing.......
Thanking you........

import org.w3c.dom.Document;
import org.w3c.dom.*;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;      ...
//Setup the document
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
     DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
     Document doc = docBuilder.parse (new File("MY_XML_FILE.xml"));
//get elemets by name
     String elementValue = doc.getElementsByTagName("MY_ELEMENT").item(0).getTextContent();
//This method can return multiple nodes, in this instance I get item(0) , first nodeRead the api for other methods of getting data.

Dom can't parse dtd reference in xml file

Hi all,
I am trying to parse a xml file (hibernate mapping file *.hbm.xml) using DOM. But itis getting timeout errorwhile parsing due to the external dtd reference in the xml file.
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" >I understand that the program is trying to access the document and is not being able to do so. But I don't have any clue to solve this problem. I don't want to remove the reference from the xml file.
The following method is trying to parse the xml file:
public void parseXML(String file) {
        factory = DocumentBuilderFactory.newInstance();
        System.out.println(file);
         try {
             builder = factory.newDocumentBuilder();
             document = builder.parse(file);
             Element docEle = document.getDocumentElement();
             NodeList n1 = docEle.getElementsByTagName("class");
            for(int i = 0; i < n1.getLength(); i++) {
                   Element e1 = (Element) n1.item(i);
                   String nm = e1.getAttribute("name");
                 System.out.println(nm);
        } catch(Exception e) {
            throw new RuntimeException(e);
    }Please help me on this....I am at no end....Please let me know if there is any method so that the parser will overlook this reference and will parse the xml file....or any other sort of solution....
Thanks in advance...
Anir

Can you provide a working sample? Upload to Onedrive and share it with us.
Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.
NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined
objects and unknown namespaces.

I want to load large raw XML file in firefox and parse by DOM. But, for large XML file the firefox very slow some time crashed . Is there any option to increase DOM handling memory in Firefox

Actually i am using an off-line form to load very large XML file and using firefox to load that form. But, its taking more time to load and some time the browser crashed. through DOM parsing this XML file to my form. Is there any option to increase DOM handler size in firefox

Thank you for your suggestion. I have a question,
though. If I use a relational database and try to
access it for EACH and EVERY click the user makes,
wouldn't that take much time to populate the page with
data?
Isn't XML store more efficient here? Please reply me.You have the choice of reading a small number of records (10 children per element?) from a database, or parsing multiple megabytes. Reading 10 records from a database should take maybe 100 milliseconds (1/10 of a second). I have written a web application that reads several hundred records and returns them with acceptable response time, and I am no expert. To parse an XML file of many megabytes... you have already tried this, so you know how long it takes, right? If you haven't tried it then you should. It's possible to waste a lot of time considering alternatives -- the term is "analysis paralysis". Speculating on how fast something might be doesn't get you very far.

Delete elements from XML file using DOM and java

Hi
I want now is to remove element from my XML file
for example
i have following xml
<?xml version="1.0" encoding="UTF-8"?>
<printing>
<firstLineTexts>
          <firstLineText />
          <firstLineText>|line11</firstLineText>
          <firstLineText>|line12</firstLineText>
</firstLineTexts>
</printing>how do i remove all elements fireLineText
my final output should be
<?xml version="1.0" encoding="UTF-8"?>
<printing>
<firstLineTexts>
</firstLineTexts>
</printing>How do i do it using DOM,
I can create instance of DOM and write it using TransformerFactory
Ashish

Hi
I am trying the following code,
but it is not working
                NodeList nScene = doc.getElementsByTagName("firstLineTexts");
          NodeList nScene1 = nScene.item(0).getChildNodes();
          for (int i = 0; i < nScene1.getLength(); i++)
               Node n = nScene1.item(i);
                    nScene.item(0).removeChild(n);
          }

How to remove element namespaces in XML file using DOM or SAX?

Hi Guys,
I developed a JAVA mapping in XI to add name spaces for XML file, after mapping,name spaces xmlns="http://www.mro.com/mx/integration" and xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" were added correctly, but for some nodes, such as <Header> and <Content>, a name space xmlns="" was added automatically.Please check below files to compare.
It looks like be added automatically by XI. I didn't process anything for these nodes in JAVA program.
Now the issue is, how can I remove these redundant namespaces? Such as xmlns="".
Can I remove them using DOM or SAX in JAVA Mapping?
Thanks in advance.
====>Original XML file
<?xml version="1.0" encoding="UTF-8"?>
<LLYLPPInterface language="EN">
   <Header>
      <SenderID>GBIP</SenderID>
      <CreationDateTime>2008-02-13T22:49:34-05:00</CreationDateTime>
      <RecipientID/>
      <MessageID/>
   </Header>
   <Content>
      <LLY-LPP>
         <INVOICE>
            <INVOICELINE>
               <PONUM>4780000008</PONUM>
               <POLINENUM>1</POLINENUM>
               <INVOICEQTY>1</INVOICEQTY>
               <LOADEDCOST>68</LOADEDCOST>
            </INVOICELINE>
         </INVOICE>
      </LLY-LPP>
   </Content>
</LLYLPPInterface>
===>Target XML file after JAVA mapping
<?xml version="1.0" encoding="utf-8"?>
<LLYLPPInterface language="EN" xmlns="http://www.mro.com/mx/integration" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
     <Header xmlns="">
          <SenderID>GBIP</SenderID>
          <CreationDateTime>2008-02-13T23:11:55-05:00</CreationDateTime>
          <RecipientID/>
          <MessageID/>
     </Header>
     <Content xmlns="">
          <LLY-LPP>
               <INVOICE>
                    <INVOICELINE>
                         <PONUM>4780000008</PONUM>
                         <POLINENUM>0</POLINENUM>
                         <INVOICEQTY>1</INVOICEQTY>
                         <LOADEDCOST>68</LOADEDCOST>
                    </INVOICELINE>
               </INVOICE>
          </LLY-LPP>
     </Content>
</LLYLPPInterface>
Edited by: Eddie Zhang on Feb 14, 2008 9:22 AM
Edited by: Eddie Zhang on Feb 14, 2008 9:24 AM

Hi Milan,
Thanks for your replay.
Actually when I used module XMLAnonymizerBean to convert namespaces, the header of XML, such as <?xml version="1.0" encoding="UTF-8"?> was converted to format <?xml version='1.0' encoding='UTF-8'?>, quote was converted to single quote. Although I set parameter anonymizer.quote = ", it still didn't work, single quote appeared instead of quote.
I'm not sure why this happened. Can anyone help to clarify this?
Thanks
Edited by: Eddie Zhang on Feb 15, 2008 2:11 AM

Pseudo code for DOM parsing a local XMl file

HI all,
1) Can any body please provide me the JAVA pseudo code for parsing xml document from local mcahine and create another xml document in another location in loca machine with small transofrmations ? (JAVA mapping using DOM parsing tehnique using an xml file in loca machine using NWDS).
2) Provide me with the links that can help me out to work with
JAVA mapping using DOM
Thanks,
Ram.

Hi,
Have a Search in SDN with Keywords JAVA Mapping, & will get lot of stuff
Implermenting JAVA Mapping in PI
Implementing a Java Mapping in SAP PI
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/10dd67dd-a42b-2a10-2785-91c40ee56c0b
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/400ee77e-f9d6-2a10-2b8c-99281a4dcf6b
Regards
Seshagiri

How to convert DOM Tree in XML File

Hi there,
I am successful to build a DOM tree in memory where i am adding elements. Now after all this i want to make a XML file of that DOM representation. Now, i am confused with my code that how to transfer DOM structure to xml file ? A small code is attached herewith ?
doc = db.newDocument();
               doc.normalizeDocument();
               doc.setXmlVersion("1.0");
               doc.createComment("Created By: Sachin Kulkarni");
               Element rn = doc.createElement("RootNode");
               Element n1 = doc.createElement("A1");
               ((Node)n1).setNodeValue("Element A1");
               Element n11 = doc.createElement("A11");
               ((Node)n11).setNodeValue("Element A11");
               Element n12 = doc.createElement("A12");
               ((Node)n12).setNodeValue("Element A12");
               ((Node)n1).appendChild( ((Node)n11) );
               ((Node)n1).appendChild( ((Node)n12) );
               Element n2 = doc.createElement("A2");
               ((Node)n2).setNodeValue("Element A2");
               Element n3 = doc.createElement("A3");
               ((Node)n3).setNodeValue("Element A3");
               ((Node)rn).appendChild( ((Node)n1) );
               ((Node)rn).appendChild( ((Node)n2) );
               ((Node)rn).appendChild( ((Node)n3) );
//creating the xml file
               Source source = new DOMSource((Element) doc.getElementsByTagName("RootNode").item(0));
               StringWriter out = new StringWriter();
               StreamResult result = new StreamResult(out);
               Transformer transformer = TransformerFactory.newInstance().newTransformer();
               transformer.setOutputProperty("encoding", "iso-8859-1");
               transformer.setOutputProperty("indent", "yes");
               //transformer.setOutputProperty("test.xml","1");
               //transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
               transformer.transform(source,result);
               result.getWriter().toString();
==================
Is it any problem with the implementation ? How to use fileoutputstream with this ?

I have done like this:
DocumentBuilderFactory docBuildFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = docBuildFactory.newDocumentBuilder();
Document doc = builder.newDocument();
Element root = (Element)doc.createElement("Root");
doc.appendChild(root);
Element address = (Element)doc.createElement("Address");
address.appendChild((Element)doc.createElement("Street"));
address.appendChild((Element)doc.createElement("PostCode"));
address.appendChild((Element)doc.createElement("Town"));
Element country = (Element)doc.createElement("Country");
country.setAttribute("type","EU");
Text cname = doc.createTextNode("Spain");
country.appendChild(cname);
address.appendChild(country);
root.appendChild(address);
TransformerFactory tranFactory = TransformerFactory.newInstance();
Transformer aTransformer = tranFactory.newTransformer();
aTransformer.setOutputProperty(OutputKeys.INDENT, "yes");
Source src = new DOMSource(doc);
Result dest = new StreamResult(new FileOutputStream(new File("test.xml")));
aTransformer.transform(src, dest);

DOM - XML File

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