Writing XML Files in Java

Hi,
How do I WRITE to XML Files.I know parsing is for reading but what is for writing?
Thankx in advance...

JAXP1.1 can be used for parsing the XML file to read/write from/to XML file.A node can be created or any node Value can be updated or changed using XML parser.Using TransformerFactory and Transformer class one can write back to any XML file.
If U still want any help write back to me.
Thanx

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How to write as XML file using java 1.5

hi all,
i am trying to create an XML file using java 1.5. I took a XML creating java file which was working with java 1.4 and ported same file into java 1.5 with changes according to the SAX and DOM implmentation in java 1.5 and tried to compile. But while writing as a file it throws error "cannot find the symbol."
can any body help me out to solve this issue.......
thankx in advance
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.NamedNodeMap;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.DocumentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.helpers.ParserFactory;
import java.io.*;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
               dbf.setNamespaceAware(true);
DocumentBuilder db = dbf.newDocumentBuilder();
Document xmlDoc = db.newDocument();
// this creates the xml document ref
// parent node reference
Element rootnd = (Element) xmlDoc.createElement("ALL_TABLES");
// root node
xmlDoc.appendChild(rootnd);
Element rownd = (Element) xmlDoc.createElement("ROW");
rootnd.appendChild(rownd);
Element statusnd = (Element) xmlDoc.createElement("FILE_STATUS");
rownd.appendChild(statusnd);
statusnd.appendChild(xmlDoc.createTextNode("Y")
FileOutputStream outpt = new FileOutputStream(outdir + "//forbranch.xml");
Writer outf = new OutputStreamWriter(outpt, "UTF-8");
//error is occuring here Since write method is not available in the Document class
xmlDoc.write(outf);
outf.flush();

Hi,
when I look in the JDK1.4.2 specification I don't see any write method in the Document interface.
However, your solution is the Transformer class. There you transform your DOM tree into any output you need. Your code sould look something like this:     TransformerFactory tf = TransformerFactory.newInstance();
     // set all necessary features for your transformer -> see OutputKeys
     Transformer t = tf.newTransformer();
     t.transform(new DOMSource(xmlDoc), new StreamResult(file));Then you have your XML file stored in the file system.
Hope it helps.

Writing XML files

Hello all
There's a vast amount of information on the java.sun.com site about parsing XML files:
* creating DOM trees in memory from an XML file
* setting up event handlers to be called when an XML file is parsed
* transforming XML files using XSL.
However, I can find very little information anywhere about writing XML files in the first place! I'm already aware of two ways to do this:
(1) create a DOM in memory and write this to a file. If the data is large, though, this isn't feasible.
(2) just output the XML elements directly to some file as text. This doesn't take account of the encoding, or special characters, and the document is not necessarily then syntactically valid.
Is there some API which I haven't yet come across that is designed specifically for writing XML data to files? If it's built in to Java 2, then goodness knows how I've missed it all this time; if it's third-party, I'd be grateful for any links.
Thanks for your help
Rich Fearn

I know pastes can be horrible, but this is a working example which I find useful: SAX XML output ;)
import java.io.*;
// SAX classes.
import org.xml.sax.*;
import org.xml.sax.helpers.*;
//JAXP 1.1
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import javax.xml.transform.sax.*;
                //AlphabetXMLOut(file, alphabets);
class AlphabetXMLOut {
        public void run(){
                try{
                        FileOutputStream fos = new FileOutputStream("output.xml");
                        PrintWriter out = new PrintWriter(fos);
                        StreamResult streamResult = new StreamResult(out);
                        // PrintWriter from a Servlet
                        //PrintWriter out = response.getWriter();
                        //StreamResult streamResult = new StreamResult(out);
                        SAXTransformerFactory tf = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
                        // SAX2.0 ContentHandler.
                        TransformerHandler hd = tf.newTransformerHandler();
                        Transformer serializer = hd.getTransformer();
                        serializer.setOutputProperty(OutputKeys.ENCODING,"ISO-8859-1");
                        serializer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM,"users.dtd");
                        serializer.setOutputProperty(OutputKeys.INDENT,"yes");
                        hd.setResult(streamResult);
                        hd.startDocument();
                        AttributesImpl atts = new AttributesImpl();
                        // USERS tag.
                        hd.startElement("","","USERS",atts);
                        // USER tags.
                        String[] id = {"PWD122","MX787","A4Q45"};
                        String[] type = {"customer","manager","employee"};
                        String[] desc = {"Tim@Home","Jack&Moud","John D'oe"};
                        for (int i=0;i<id.length;i++){
                                atts.clear();
                                atts.addAttribute("","","ID","CDATA",id);
atts.addAttribute("","","TYPE","CDATA",type[i]);
hd.startElement("","","USER",atts);
hd.characters(desc[i].toCharArray(),0,desc[i].length());
hd.endElement("","","USER");
hd.endElement("","","USERS");
hd.endDocument();
fos.close();
}catch (IOException e){
System.err.println ("Unable to write to file");
System.exit(-1);
}catch (TransformerConfigurationException tce){
System.err.println("Error in: TransformerConfigurationException");
}catch (SAXException spe) {
// Error generated by the parser
System.err.println("Error in: (SAXException");
// Use the contained exception, if any
Exception x = spe;
if (spe.getException() != null)
x = spe.getException();
x.printStackTrace();
-Hope this helps

Generation of xml file from java code

hi,
I want to manipulate data in a xml file with java code.I have read data from xml file and also changed it. But i am unable to covert it again in xml file from java code. Can you please tell me how i can do this?

Let me know which parser are you using currently for reading xml files so that i assist you. For now, you can refer to STAX Parser API under this link
http://java.sun.com/webservices/docs/1.6/tutorial/doc/SJSXP3.html

How to read the data from Excel file and Store in XML file using java

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How to edit the existing data in the XML file from java programming.

Hi all
i am able to create XML file with the sample data as below from java programming.
i need sample code on how to edit the existing data in the XML file?
for example
<?xml version="1.0"?>
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                     <key1>467</key1>
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                    <id1>123</id1>
          </data1>
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hi
u need a parser or validate the xml file for to read the xml file from java coding u need for this
xml4j.jar u can download this file from here
http://www.alphaworks.ibm.com/tech/xml4j
or we can use the SAX(simple API for XML)
some sample applications for this
http://www.java-tips.org/java-se-tips/javax.xml.parsers/how-to-read-xml-file-in-java.html
http://www.developertutorials.com/tutorials/java/read-xml-file-in-java-050611/page1.html
http://www.xml-training-guide.com/e-xml44.html
let me know u need any other info
bvr

How I can create a XML file from java Aplication

How I can create a XML file from java Aplication
whith have a the following structure
<users>
<user>
<login>anyName</login>
<password>xxxx</password>
</user>
</users>
the password label must be encripted
accept any suggestion

Let us assume you have all the data from the jsp form in an java bean object..
Now you want a xml file. This can be acheived in 2 ways
1. Write it into a file using java.io classes. Say you have a class with name
write("<name>"+obj.getName+</name>);
bingo you have a flat file with the xml
2. Use data binding to do the trick
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All I suggested was to insert a single line ("X.serialize(root);") into your code. Anyway, here's a ready-to-compile source code based on yours. This code utilizes the Xerces-J class library.import java.io.File;
import java.io.FileWriter;
import org.apache.xerces.dom.DocumentImpl;
import org.apache.xml.serialize.OutputFormat;
import org.apache.xml.serialize.XMLSerializer;
import org.w3c.dom.Element;
public class Test {
public static void main(String[] arguments) {
    FileWriter out;
    DocumentImpl d;
    Element root;
    XMLSerializer X;
    try {
      System.out.println(" creatin ");
      File fos = new File("xsr.xml");
      out = new FileWriter("xsr.xml");
      System.out.println("created File .." + fos.getName());
      out.flush();
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      System.out.println("create root");
      root = d.createElement("abc");
      System.out.println("creating element");
      d.insertBefore(root, null);
      //out.write(d.createAttribute(""));
      OutputFormat o = new OutputFormat(d);
      System.out.println("Output format...");
      o.setIndent(5);
      o.setIndenting(true);
      o.setDoctype("lab1.dtd", "lab1.dtd");
      o.setDoctype("name of dtd file", "name of dtd file");
      X = new XMLSerializer(o);
      X.setOutputCharStream(out);
      X.serialize(root);
      out.flush();
      out.close();
    catch (Exception e1){
      e1.printStackTrace();
}

Creating XML file from Java Bean

Hi
Are there any standard methods in Java 1.5 to create XML file from java bean,
i can use JAXB or castor to do so,
But i would like to know if there is any thing in java core classes,
I have seen XMLEncoder, but this is not what i want.
Any ideas
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How to modify an existing xml file from java code.

Hi
I have worked on creating a new xml file from java code using xmlbeans.But if i try to modify an already existing file using java code I am unable to get errorfree xmlfile.
For example if xml file(studlist.xml) is as below:
<?xml version="1.0" encoding="UTF-8"?>
<StudentList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="D:\kchaitanya\xmlprac1\abc\Studlist.xsd">
     <Student>
          <Name>ram</Name>
          <Age>27</Age>
     </Student>
<Student>
          <Name>sham</Name>
          <Age>26</Age>
     </Student>
</StudentList>
Now suppose i have set name to victor using student.setName,
and set age to 20 using setAge from javacode,
the new xml file is as follows:
<?xml version="1.0" encoding="UTF-8"?>
<StudentList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="D:\kchaitanya\xmlprac1\abc\Studlist.xsd">
     <Student>
          <Name>ram</Name>
          <Age>27</Age>
     </Student>
<Student>
          <Name>sham</Name>
          <Age>26</Age>
     </Student>
</StudentList>
<Student>
          <Name>victor</Name>
          <Age>20</Age>
     </Student>
As observed this is not a valid xml file.But how can i modify without any errors?

I know it's an old post, but I found this while doing a google search for something else, and don't like to leave it un-aswered
Just in case anyone has a similar problem... In this case the new elements have been appended outside of the root element
What you need to do is first get the root element and then append the new children to that, there are several ways of getting the root element, which depend on what you want to do with the elements you get back here's a simple (incomplete) way.
// gets the root element of the specified file (code not shown)
Element rootElement= new SAXReader().read(file).getRootElement();Then just append the new elements as below (this is non-generic code and would need to be modified for your situation)
// write a new student element
Element student = document.createElement("Student"); // creates the new student
rootElement.appendChild(student); // ***appends it to the root element***
Element name = document.createElement("Name"); // creates the name element
name.appendChild(document.createTextNode("Fred")); // adds the name text to the name element
student.appendChild(name); // appends the name to the student
Element age= document.createElement("Age"); // creates the age element
age.appendChild(document.createTextNode("26")); // adds the age text to the age element
student.appendChild(age); // appends the name to the studentThen flush ya buffers or whatever and write the file
Edited by: Dream-Scourge on Apr 23, 2008 11:10 AM

"encoding = UTF-8" missing while writing XML file using file Adapter

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<?xml version="1.0" ?>
<customerSet>
<user>
<externalID>51017</externalID>
<userInfo>
<employeeID>51017</employeeID>
<employeeType>Contractor</employeeType>
<userName/>
<firstName>Gail</firstName>
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<costCenter>8506</costCenter>
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<workphone>
<number/>
</workphone>
<mobilePhone>
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So if you see the header the "encoding=UTF-8" is missing after "version-1.0".
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Please advice.
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Can any one explain me the easiest way of accessing XML files from Java.

Hi,
If you want to only access the XML file, use the SAX parser It will be very easy to handle and identify the element and value.
else if u want to change the XML value also, then better go with DOM, Which has very good flexiblity.
use according to the need, let me know if any help is required......
With Cheers
PrasannA

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and i need to parse using some parsers and display attributes and entity seperately
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import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.io.SAXReader;
import java.io.File;
import java.text.AttributedCharacterIterator.Attribute;
import java.util.Iterator;
import java.util.StringTokenizer;
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private String Result="";
private String Final="";
private String Delim="";
public void bar1(Document document) throws DocumentException
org.dom4j.Element root = document.getRootElement();
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bar2(root);
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