How to convert java object to xml?

Is JAXB the only way to do so?
Can somebody help me?
I have tried for almost a week,
but I am failed all the time.

Sax would be the best way to do it,
Create a class that implements the org.xml.sax.XMLReader interface. Fire events at its ContentHandler (like open tag, element content characters, and close tag) and it can be used to create a javax.xml.transform.sax.SAXSource.
I learnt how to do this by looking at example code that comes with the pache FOP project. They have a class which is "converted" to XML, and that output is fed through a transformation. I cribbed their code and used it in mine. Including their helper classes AbstractObjectReader and EasyGenerationContentHandlerProxy which help a lot.
Of course you never see the XML from the object, that's just a transitional form, but you COULD output that if you wanted. Take a look at http://xml.apache.org/fop/ - the code is bundled with the installation under the "examples" directory.

Similar Messages

How to convert Java Objects into xml?

Hello Java Gurus
how to convert Java Objects into xml? i heard xstream can be use for that but i am looking something which is good in performance.
really need your help guys.
thanks in advance.

There are apparently a variety of Java/XML bindings. Try Google.
And don't be so demanding.

WD(ABAP) - How to convert PDF object to XML

I know there is a way available to converting PDF object to XML in JAVA. However how to achieve this goal in ABAP?
In Web Dynpro ABAP, I can bind a context attribute to the pdfSource property of interactive form element. There also should be method to able to convert the binary content of this attribute to XML format, right? Does anyone know it?
Your help would be greatly appreciated.

Hi all,
As an extension to Fred's question, is it possible to later use the generated XML data and present it in a PDF template? It used to be possible using the FDF format, but Adobe seem to have discontinued that.
My basic requirement is to send the form data to a third party in XML format and for them to be able to view it in human-readable format, preferably using a PDF as a template.
Is this possible?
Thanks,
Jonathan

How to convert Java string into XML one?

With SAX I can parse an xml file, but I should create xml file by hands.
Ok, it's simple, but how to encode java string into XML constant
like "Hello & goodby" into "Hello & goodby" ?
Is there a standard method for such special xml characters?

If you are creating your XML "by hand" then just make sure your hands know that you have to do that. It isn't difficult to write a Java method to do it, if "by hand" means "in Java code". Otherwise your XML is not well-formed. And as far as I know there is no package that takes ill-formed XML and fixes it up.

How to generate Java objects from XML files with out scema compilation

Dear participants,
My name is Raghavendra , i have a requirement of reading XML files Dynamically and parse them and create java types for manipulation . i will not be provided with sxd files (no schema compilation )coz no one knows how many types of structures are there. i want a generic solution. Please Help.
Thanks ,
Raghavendra Ach
you can mail me to " [email protected]"

georgemc wrote:
You could also look at something like Apache Digester, which will parse your XML and populate Java objects with the data. A slightly steeper learning curve than the lower-level APIs such as JDOM, but that's outweighed by the lesser development effortdon't think that would work for the original problem, which seemed to indicate that the xml had an unknown structure.

How to convert an Object to XML definition

Hi all,
A quick question I want to convert an instance of an object
(including it's properties) to XML. I have read the doco on
SimpleXMLEncoder whixh states that : "The SimpleXMLEncoder class
take ActionScript Objects and encodes them to XML. Use default
serialization. "
Will this class do the job? if so the example code does not
really demonstrate it clearly that it will. And I haven´t been
able to get it to work.
If this is not the Class to use is there another or do I have
to write my own class?
Thank you in advance.
David

Hi Tim,
Thanks for the quick reply. I tried your code above and the
compiler tells me I was missing 1 Argument for (an instance of XML
Docuement it looks like):
var myEncoder:SimpleXMLEncoder = new SimpleXMLEncoder();
And 2 Arguments for :
var myXML:XMLNode = myEncoder.encodeValue(myobject);
I ended up creating this missing parameters as follows and
got the result I was looking for. Does this look right to you?
var rootXML:XMLNode = new
XMLNode(XMLNodeType.DOCUMENT_TYPE_NODE,"Root");
var myQname:QName = new QName("namspace","local");
var myXMLDocument:XMLDocument = new XMLDocument();
var myEncoder:SimpleXMLEncoder = new
SimpleXMLEncoder(myXMLDocument);
var myXML:XMLNode =
myEncoder.encodeValue(objectToEncode,myQname,rootXML);
trace (myXML.toString());
var myRealXML:XML = new XML(myXML.toString());
trace ("------------");
trace (myRealXML.toXMLString());
David

Design pattern for converting multiple complex Java objects to XML

What is the traditionally accepted high performance mechanism for converting Java objects to XML? Some options I have explored are:
1. SAX-JAXP
2. DOM-JAXP
3. JAXB
4. Castor
Which of these usually performs the best for large, complex objects which contain multiple subobjects?
Thanks.

Take a look at XStream. It will simplify your life considerably.
Typical code snipped
XStream xStream = new XStream();
xStream.toXML(someJavaObject);That's it. Regarding the others...
1. SAX-JAXP
Can be used for XML -> Java Objects, but you have to write significant amounts of ugly, high maintainenance code
2. DOM-JAXP
Slower and more memory intensive than SAX because you need to read the whole object into memory first. Just as ugly and high maintenance.
3. JAXB
Actually very good for going from a POJO to XML, but rubbish in the opposite direction. The worst part is it adds an extra step to your build process as you need to tell it to generate and compile the source for doing this.
4. Castor
Not used it since JAXB came out. Works pretty much in the same way but also supports XML -> POJOs.

Java objects to xml streams in pipe

hi all
I am stuck up at a point in my project.I want to write and read a java object ie Record record , in to a pipe.Not the record object has the data that i reads from a text file.I want the data written in the pipe in the from of xml stream and that read from the pipe in the xml stream .can anyone suggest me with some concerete solution
thanking you
yash

XMLBeans and JAXB technologies convert Java Objects to XML.

How can I use XStream to persist complicated Java Object to XML & backward

Dear Sir:
I met a problem as demo in my code below when i use XTream to persist my Java Object;
How can I use XStream to persist complicated Java Object to XML & backward??
See
[1] main code
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
public class PhoneList {
     ArrayList<PhoneNumber> phones;
     ArrayList<Person> person;
     private PhoneList myphonelist ;
     private LocationTest location;
     private PhoneList(String name) {
     phones = new ArrayList<PhoneNumber>();
     person = new ArrayList<Person>();
     public ArrayList<PhoneNumber> getphones() {
          return phones;
     public ArrayList<Person> getperson() {
          return person;
     public void addPhoneNumber(PhoneNumber b1) {
          this.phones.add(b1);
     public void removePhoneNumber(PhoneNumber b1) {
          this.phones.remove(b1);
     public void addPerson(Person p1) {
          this.person.add(p1);
     public void removePerson(Person p1) {
          this.person.remove(p1);
     public void BuildList(){
          location = new LocationTest();
          XStream xstream = new XStream();
          myphonelist = new PhoneList("PhoneList");
          Person joe = new Person("Joe, Wallace");
          joe.setPhone(new PhoneNumber(123, "1234-456"));
          joe.setFax(new PhoneNumber(123, "9999-999"));
          Person geo= new Person("George Nixson");
          geo.setPhone(new PhoneNumber(925, "228-9999"));
          geo.getPhone().setLocationTest(location);
          myphonelist.addPerson(joe);
          myphonelist.addPerson(geo);
     public PhoneList(){
          XStream xstream = new XStream();
          BuildList();
          saveStringToFile("C:\\temp\\test\\PhoneList.xml",convertToXML(myphonelist));
     public void saveStringToFile(String fileName, String saveString) {
          BufferedWriter bw = null;
          try {
               bw = new BufferedWriter(
                         new FileWriter(fileName));
               try {
                    bw.write(saveString);
               finally {
                    bw.close();
          catch (IOException ex) {
               ex.printStackTrace();
          //return saved;
     public String getStringFromFile(String fileName) {
          BufferedReader br = null;
          StringBuilder sb = new StringBuilder();
          try {
               br = new BufferedReader(
                         new FileReader(fileName));
               try {
                    String s;
                    while ((s = br.readLine()) != null) {
                         // add linefeed (\n) back since stripped by readline()
                         sb.append(s + "\n");
               finally {
                    br.close();
          catch (Exception ex) {
               ex.printStackTrace();
          return sb.toString();
     public String convertToXML(PhoneList phonelist) {
          XStream xstream = new XStream(new DomDriver());
          xstream.setMode(xstream.ID_REFERENCES) ;
          return xstream.toXML(phonelist);
     public static void main(String[] args) {
          new PhoneList();
}[2].
import java.io.Serializable;
import javax.swing.JFrame;
public class PhoneNumber implements Serializable{
       private      String      phone;
       private      String      fax;
       private      int      code;
       private      String      number;
       private      String      address;
       private      String      school;
       private      LocationTest      location;
       public PhoneNumber(int i, String str) {
            setCode(i);
            setNumber(str);
            address = "4256, Washington DC, USA";
            school = "Washington State University";
     public Object getPerson() {
          return null;
     public void setPhone(String phone) {
          this.phone = phone;
     public String getPhone() {
          return phone;
     public void setFax(String fax) {
          this.fax = fax;
     public String getFax() {
          return fax;
     public void setCode(int code) {
          this.code = code;
     public int getCode() {
          return code;
     public void setNumber(String number) {
          this.number = number;
     public String getNumber() {
          return number;
     public void setLocationTest(LocationTest bd) {
          this.location = bd;
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(location);
        f.getContentPane().add(location.getControls(), "Last");
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
     public LocationTest getLocationTest() {
          return location;
     }[3].
package test.temp;
import java.io.Serializable;
public class Person implements Serializable{
     private String           fullname;
       @SuppressWarnings("unused")
     private PhoneNumber      phone;
       @SuppressWarnings("unused")
     private PhoneNumber      fax;
     public Person(){
     public Person(String fname){
            fullname=fname;
     public void setPhone(PhoneNumber phoneNumber) {
          phone = phoneNumber;
     public void setFax(PhoneNumber phoneNumber) {
          fax = phoneNumber;
     public PhoneNumber getPhone() {
          return phone ;
     public PhoneNumber getFax() {
          return fax;
    public String getName() {
        return fullname ;
    public void setName(String name) {
        this.fullname      = name;
    public String toString() {
        return getName();
}[4]. LocationTest.java
package test.temp;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
import javax.swing.event.*;
public class LocationTest extends JPanel implements ChangeListener
    Ellipse2D.Double ball;
    Line2D.Double    line;
    JSlider          translate;
    double           lastTheta = 0;
    public void stateChanged(ChangeEvent e)
        JSlider slider = (JSlider)e.getSource();
        String name = slider.getName();
        int value = slider.getValue();
        if(name.equals("rotation"))
            tilt(Math.toRadians(value));
        else if(name.equals("translate"))
            moveBall(value);
        repaint();
    protected void paintComponent(Graphics g)
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        if(ball == null)
            initGeom();
        g2.setPaint(Color.green.darker());
        g2.draw(line);
        g2.setPaint(Color.red);
        g2.fill(ball);
    private void initGeom()
        int w = getWidth();
        int h = getHeight();
        int DIA = 30;
        int padFromEnd = 5;
        line = new Line2D.Double(w/4, h*15/16, w*3/4, h*15/16);
        double x = line.x2 - padFromEnd - DIA;
        double y = line.y2 - DIA;
        ball = new Ellipse2D.Double(x, y, DIA, DIA);
        // update translate slider values
        int max = (int)line.getP1().distance(line.getP2());
        translate.setMaximum(max);
        translate.setValue(max-padFromEnd);
    private void tilt(double theta)
        // rotate line from left end
        Point2D pivot = line.getP1();
        double lineLength = pivot.distance(line.getP2());
        Point2D.Double p2 = new Point2D.Double();
        p2.x = pivot.getX() + lineLength*Math.cos(theta);
        p2.y = pivot.getY() + lineLength*Math.sin(theta);
        line.setLine(pivot, p2);
        // find angle from pivot to ball center relative to line
        // ie, ball center -> pivot -> line end
        double cx = ball.getCenterX();
        double cy = ball.getCenterY();
        double pivotToCenter = pivot.distance(cx, cy);
        // angle of ball to horizon
        double dy = cy - pivot.getY();
        double dx = cx - pivot.getX();
        // relative angle phi = ball_to_horizon - last line_to_horizon
        double phi = Math.atan2(dy, dx) - lastTheta;
        // rotate ball from pivot
        double x = pivot.getX() + pivotToCenter*Math.cos(theta+phi);
        double y = pivot.getY() + pivotToCenter*Math.sin(theta+phi);
        ball.setFrameFromCenter(x, y, x+ball.width/2, y+ball.height/2);
        lastTheta = theta; // save theta for next time
    private void moveBall(int distance)
        Point2D pivot = line.getP1();
        // ball touches line at distance from pivot
        double contactX = pivot.getX() + distance*Math.cos(lastTheta);
        double contactY = pivot.getY() + distance*Math.sin(lastTheta);
        // find new center location of ball
        // angle lambda = lastTheta - 90 degrees (anti-clockwise)
        double lambda = lastTheta - Math.PI/2;
        double x = contactX + (ball.width/2)*Math.cos(lambda);
        double y = contactY + (ball.height/2)*Math.sin(lambda);
        ball.setFrameFromCenter(x, y, x+ball.width/2, y+ball.height/2);
    JPanel getControls()
        JSlider rotate = getSlider("rotation angle", "rotation", -90, 0, 0, 5, 15);
        translate = getSlider("distance from end", "translate", 0, 100, 100,25, 50);
        JPanel panel = new JPanel(new GridLayout(0,1));
        panel.add(rotate);
        panel.add(translate);
        return panel;
    private JSlider getSlider(String title, String name, int min, int max,
                              int value, int minorSpace, int majorSpace)
        JSlider slider = new JSlider(JSlider.HORIZONTAL, min, max, value);
        slider.setBorder(BorderFactory.createTitledBorder(title));
        slider.setName(name);
        slider.setPaintTicks(true);
        slider.setMinorTickSpacing(minorSpace);
        slider.setMajorTickSpacing(majorSpace);
        slider.setPaintLabels(true);
        slider.addChangeListener(this);
        return slider;
}OK, My questions are:
[1]. what I generated XML by XSTream is very complicated, especially for object LocationTest, Can we make it as simple as others such as Person object??
[2]. after I run it, LocationTest will popup and a red ball in a panel will dsiplay, after I change red ball's position, I hope to persist it to xml, then when I read it back, I hope to get same picture, ie, red ball stiil in old position, How to do that??
Thanks a lot!!

Positive feedback? Then please take this in a positive way: if you want to work on persisting Java objects into XML, then GUI programming is irrelevant to that goal. The 1,000 lines of code you posted there appeared to me to have a whole lot of GUI code in it. You should produce a smaller (much smaller) example of what you want to do. Calling the working code from your GUI program should come later.

Sending Custom Java Objects over XML!!

Hello all !
Can anybody please tell me how can I send custom Java Objects through XML? For example we can set attributes for a node using the setAttribute method, it accepts only strings, also the setTextContent method requires text and sets the node's value.Can I some way set my own Java object as the value of a particular node or attach it to the node?
Thanks in advance.

Kami_Pakistan wrote:
So I should rather go for Marshalling or Serialization or is there any other work-around possible?I don't know. You didn't say what you had against text formats. Since all Java objects are composed of primitives when you get right down to the bottom, everything in Java can be serialized as text versions of those primitives. So you're going to have to explain why you think a work-around is necessary at all.

How to store java object in oracle

Hi all,
is it possible to store jva object in oracle.
I have defined myClass. It have only data fields ( no methods).
I make myClass myObject = new myClass();
How can I store this object in oracle DB.
Many thanks in advance.

1.Convert this object into stream of Bytes.
2.create a new InputStream from these Byte array.
2.Use the setBinaryStream to set the values inside the table's column.
3.Store this object as a Blob in the table (column type must be Blob).
Hope this helps.
Sudha
PS:- Somebody explained in this forum how to convert an Object into Byte array .

Serializing Java Objects to XML files

Hi,
We looking for SAP library which can serialize Java Objects into XML files.
Can you point us were to find it ?
We have found such open source library called "XStream" at the following link
http://www.xml.com/pub/a/2004/08/18/xstream.html
Is it allowed to use that library inside SAP released software ?
Thanks
Orit

How about https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/webcontent/uuid/83f6d2fb-0c01-0010-a2ba-a2ec94ba08f4 [original link is broken] [original link is broken]? Depends on your use cases...
Both are supported in SAP NW CE 7.1.
HTH!
-- Vladimir

How to convert database table into xml file

Hi.
How to convert database table into XML file in Oracle HTML DB.
Please let me know.
Thanks.

This not really a specific APEX question... but I search the database forum and found this thread which I think will help
Exporting Oracle table to XML
If it does not I suggest looking at the database forum or have a look at this document on using the XML toolkit
http://download-east.oracle.com/docs/html/B12146_01/c_xml.htm
Hope this helps
Chris

How to return java objects on the button click

hello all,
i wonder if any body let me know ,how to return java objects on button click,
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class base
     base()
          JFrame frame = new JFrame("Base class Message Dialog Box");
          JPanel panel = new JPanel();
          JButton buttonchildone = new JButton("Child class one");
          buttonchildone.addActionListener(new ActionListener(){
               public actionPerformed(ActionEvent e)
                    childone ch1=new childone();
               return ch1;
          JButton buttonchildtwo = new JButton("Child class two");
          buttonchildtwo.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent e)
                    childtwo ch2=new childtwo();
                    return ch2;
          panel.add(buttonchildone);
          panel.add(buttonchildtwo);
          frame.add(panel);
          frame.setSize(300, 300);
          frame.setVisible(true);
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     void show()
          System.out.println("Base class show() method");
public class mainmethod
     public static void main(String[] args)
          base baseobj=new base();
here my aim is to achieve dynamic polymorphism by button click's ,where based on the button click i can send back an object of childone or childtwo classes
thanks and regard
Mac
Message was edited by:
LoveOpensource

You probably need to rethink your design. Where are these child classes going? What is using or consuming them? I agree with the message above about a button instantiating a parent field variable to one child or the other depending on which button is pressed.
Message was edited by:
petes1234

How to convert matchcode objects to searchhelps.

Hi,
I had created search helps before but,
We have a project in which we have matchcode objects. The client wants us to create
searchhelps for those matchcode objects with the same name
I am not getting how to convert matchcode objects to searchhelps.
Regards,
sarath.

pick the object name and hit them in se11 search help row... that is a search help...
parameter: p type x-x matchcode object <object_name>

How to convert java object to xml?

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