JAVA Object to XML to JAVA to XML

I have to achieve below in java:-
-Create input XMLs from Java class (that resides in a jar).
-Take input from user then store that data to Java object and submit for processing.
-After processing print response java object again in XML.
What is the best API to achieve this. Will be helpful if any example is available.

Thanks for the Reply =)
I have a Java Object that have some fileds like arraylist<Class> I want to take care of these fields as well.
If that arrayList<Class> have another fields that can be normal fileds or arraylist of another class, need to take care of all fields during XML generation
Example:-
Root Class have below fields
private int ArCt;
private ArrayList<ClassChild1> Ar;
Setters
Getters
ClassChild1.class
private int PlnCd;
private int cArCt;
private ArrayList cAr<ClassChild2> cAr;
ClassChild2.class
private String PlNm
XML Needed - Example from above object
<root>
<ArCt>1</ArCt>
<Ar>
<ClassChild1>
<PlnCd>S</PlnCd>
<cArCt>2</<cArCt>
<cAr>
<ClassChild2>
<PlNm>Plan1</PlNm>
</ClassChild2>
<ClassChild2>
<PlNm>Plan2</PlNm>
</ClassChild2>
</cAr>
</ClassChild1>
</Ar>
</root>
Edited by: nitingautam on May 15, 2011 11:01 PM

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    }OK, My questions are:
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         * Sets the accessorFieldName
         * @param accessorFieldName The accessorFieldName to set
         public void setAccessorFieldName(String accessorFieldName) {
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         * @return Returns a Object
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    I think the end of my post got cut off:
    I'm having some trouble figuring out how to implement the XMLDAO.getObject(Node n) method. I was thinking of maintaining a Stack of the previous Objects as I traverse the DOM, but I think that might be unnecessary work. Basically I'm wondering how I determine what the last "object" is in the DOM from any given node. Anyone have any input?

  • Parse of a xml file to an java object model

    Hello,
    I'm trying to do a program that receive an xml file and ought to create all the neccesary java objects according to the content of the parsed xml file.
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    Until now, I have part of this code, that is the one wich have to parse the parts of the xml.
    public static void readFile(String root){
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                   .newInstance();
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                   DocumentBuilder builder = factory.newDocumentBuilder();
                   Scanner scanner = new Scanner(new File(root)).useDelimiter("\\Z");
                   String contents = scanner.next();
                   scanner.close();
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                   Node node = null;
                   NodeList nodes = null;
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                   e.printStackTrace();
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                   e.printStackTrace();
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                   e.printStackTrace();
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                   childNode = nextChild;
         private static void visitAttributes(NamedNodeMap attributes){
              Node node;
              for(int i = 0; i < attributes.getLength(); i++){
                   node = attributes.item(i);
                   System.out.print(node.getNodeName() + " ");
                   System.out.print(node.getNodeValue() + " ");
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    Thanks for all.

    Hello again,
    My native language is Spanish and sorry by my English I attemp write as better I can, using my own knowledge and the google traductor.
    I have solved my initial problem with the xml parser.
    Firstly, I read the complete XML file, validated previously.
    The code I've used is this:
    public static String readCompleteFile (String root){
              String content = "";
              try {
                   Scanner scanner = new Scanner(new File(root)).useDelimiter("\\Z");
                   content = scanner.next();
                   scanner.close();
              } catch (IOException e) {
                   e.printStackTrace();
              return content;
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    I can receive different types of XML that could be or not partly equals.
    For this purpose I've created an external jar library with all the possible objects contained in my xml files.
    Each one of this objects depend on other, until found leaf nodes.
    For example, If I receive one xml with a scheme like the next:
    <Person>
        <Name>Juliet</Name>
        <Father Age="30r">Peter</Father>
        <Mother age="29">Theresa</Mother>
        <Brother>
        </Brother>
        <Education>
            <School>
            </school>
        </education>
    </person>
    <person>
    </person>The first class, which initializes the parse, should selecting all the person tags into the file and treat them one by one. This means that for each person tag found, I must to call each subobject wich appears in the tag. using as parameter his own part of the tag and so on until you reach a node that has no more than values and or attributes. When the last node is completed I'm going to go back for completing the parent objects until I return to the original object. Then I'll have all the XML in java objects.
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    public class Person{
      final String[] SUBOBJETOS = {"Father", "Mother", "Brothers", "Education"};
      private String name;
         private Father father;
         private Mother mother;
         private ArrayList brothers;
         private Education education;
         public Person(String xml){
           XmlUtil utilXml = new XmlUtil();          
              String xmlFather = utilXml.textBetweenXmlTags(xml, SUBOBJETOS[0]);
              String xmlMother = utilXml.textBetweenXmlTags(xml, SUBOBJETOS[1]);
              String xmlBrothers = utilXml.textBetweenMultipleXmlTags(xml, SUBOBJETOS[2]);
              String xmlEducation = utilXml.textBetweenXmlTags(xml, SUBOBJETOS[3]);
              if (!xmlFather.equals("")){
                   this.setFather(new Father(xmlFather));
              if (!xmlMother.equals("")){
                   this.setMother(new Father(xmlMother));
              if (!xmlBrothers.equals("")){
                ArrayList aux = new ArrayList();
                String xmlBrother;
                while xmlBrothers != null && !xmlBrothers.equals("")){
                  xmlBrother = utilXml.textBetweenXmlTags(xmlBrothers, SUBOBJETOS[2]);
                  aux.add(new Brother(xmlBrother);
                  xmlBrothers = utilXml.removeTagTreated(xmlBrothers, SUBOBJETOS[2]);
                this.setBrothers(aux);
              if (!xmlEducation.equals("")){
                   this.setEducation(new Father(xmlEducation));     
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    public class Mother {
         //Elements
         private String name;
         private String age;
         public Mother(String xml){          
              XmlUtil utilXml = new XmlUtil();
              HashMap objects = utilXml.parsearString(xml);
              ArraysList objectsList = new ArrayList();
              String[] Object = new String[2];
              this.setName((String)objects.get("Mother"));
              if (objects.get("attributes")!= null){
                   objectsList = objects.get("attributes");
                   for (int i = 0; i < objectsList.size();i++){
                     Object = objectsList.get(i);
                     if (object[0].equals("age"))
                       this.setAge(object[1]);
                     else
         }Each class will have its getter and setter but I do not have implemented in the examples.
    Finally, the parser is as follows:
    import java.io.ByteArrayInputStream;
    import java.io.IOException;
    import java.util.ArrayList;
    import java.util.HashMap;
    import javax.xml.parsers.DocumentBuilder;
    import javax.xml.parsers.DocumentBuilderFactory;
    import javax.xml.parsers.ParserConfigurationException;
    import org.w3c.dom.Document;
    import org.w3c.dom.NamedNodeMap;
    import org.w3c.dom.Node;
    import org.xml.sax.SAXException;
    public class XmlUtil {
         public HashMap parsearString(String contenido){
              HashMap objet = new HashMap();
              DocumentBuilderFactory factory;
              DocumentBuilder builder;
              Document document;
              try{
                   if (content != null && !content.equals("")){
                        factory = DocumentBuilderFactory.newInstance();
                        builder = factory.newDocumentBuilder();
                        document = builder.parse(new ByteArrayInputStream(content.getBytes()));
                        object = visitNodes(document);                    
                   }else{
                        object = null;
              } catch (ParserConfigurationException e) {
                   e.printStackTrace();
                   return null;
              } catch (SAXException e) {
                   e.printStackTrace();
                   return null;
              } catch (IOException e) {
                   e.printStackTrace();
                   return null;
              return object;
         private HashMap visitNodes (Node node){
              String nodeName = "";
              String nodeValue = "";
              ArrayList attributes = new ArrayList();
              HashMap object = new HashMap();
              Node childNode = node.getFirstChild();
              if (childNode.getNodeType() == Node.ELEMENT_NODE){
                   nodeName = childNode.getNodeName();                    
                   if (childNode.hasAttributes()){
                        attributes = visitAttributes(childNode.getAttributes());
                   }else{
                        attributes = null;
                   nodeValue = getNodeValue(childNode);
                   object.put(nodeName, nodeValue);
                   object.put("attributes", attributes);
              return object;
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              if (node.hasChildNodes() && node.getFirstChild().getNodeType() == Node.TEXT_NODE && !node.getFirstChild().getNodeValue().contains("\n\t"))
                   return node.getFirstChild().getNodeValue();
              else
                   return "";
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              Node node;
              ArrayList ListAttributes = new ArrayList();
              String [] attribute = new String[2];
              for(int i = 0; i < attributes.getLength(); i++){
                   atribute = new String[2];
                   node = attributes.item(i);
                   if (node.getNodeType() == Node.ATTRIBUTE_NODE){
                        attribute[0] = node.getNodeName();
                        attribute[1] = node.getNodeValue();
                        ListAttributes.add(attribute);
              return ListAttributes;
    }This code functioning properly. However, as exist around 400 objects to the xml, I wanted to create a method for more easily invoking objects that are below other and that's what I can't get to do at the moment.
    The code I use is:
    import java.lang.reflect.Constructor;
    import java.lang.reflect.InvocationTargetException;
    import java.lang.reflect.Method;
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         public Object UtilClasses(String package, String object, String xml){
              try {
                Class class = Class.forName(package + "." + object);
                //parameter types for methods
                Class[] partypes = new Class[]{Object.class};
                //Create method object . methodname and parameter types
                Method meth = class.getMethod(object, partypes);
                //parameter types for constructor
                Class[] constrpartypes = new Class[]{String.class};
                //Create constructor object . parameter types
                Constructor constr = claseObjeto.getConstructor(constrpartypes);
                //create instance
                Object obj = constr.newInstance(new String[]{xml});
                //Arguments to be passed into method
                Object[] arglist = new Object[]{xml};
                //invoke method!!
                String output = (String) meth.invoke(dummyto, arglist);
                System.out.println(output);
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            } catch (SecurityException e) {
                e.printStackTrace();
            } catch (NoSuchMethodException e) {
                e.printStackTrace();
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                e.printStackTrace();
            } catch (InstantiationException e) {
                e.printStackTrace();
              return null;
         }This is an example obtained from the Internet that I've wanted modified to my needs. The problem is that when the class calls this method to invoke the constructor and does not fail, this does not do what I expect, because it creates an empty constructor. If not, the parent class gives a casting error.
    I hope that now have been more clear my intentions and that no one has fallen asleep reading this lengthy explanation.
    greetings.

  • How to create and instance of Java Object from an XML Document.

    Hi,
    How can we use a XML Document to create an instance of Java Object and do vice versa ie from the Java Object creating the XML Document.
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    Are there helper class available to achieve this.
    I need to do this in a Servlet.
    Regards
    Pramod.

    JAXB is part of JavaSE while Xmlbeans claims full schema support and full infoset fidelity.
    If the standard APIs do all that you need well then use them.

  • How to parse XML to Java object... please help really stuck

    Thank you for reading this email...
    If I have a **DTD** like:
    <!ELEMENT person (name, age)>
    <!ATTLIST person
         id ID #REQUIRED
    >
    <!ELEMENT name ((family, given) | (given, family))>
    <!ELEMENT age (#PCDATA)>
    <!ELEMENT family (#PCDATA)>
    <!ELEMENT given (#PCDATA)>
    the **XML** like:
    <person id="a1">
    <name>
         <family> Yoshi </family>
         <given> Samurai </given>
    </name>
    <age> 21 </age>
    </person>
    **** Could you help me to write a simple parser to parse my DTD and XML to Java object, and how can I use those objects... sorry if the problem is too basic, I am a beginner and very stuck... I am very confuse with SAXParserFactory, SAXParser, ParserAdapter and DOM has its own Factory and Parser, so confuse...
    Thank you for your help, Yo

    Hi, Yo,
    Thank you very much for your help. And I Wish you are there...I'm. And I plan to stay - It's sunny and warm here in Honolulu and the waves are up :)
    A bit more question for dear people:
    In the notes, it's mainly focus on JAXB,
    1. Is that mean JAXB is most popular parser for
    parsing XML into Java object? With me, definitely. There are essentially 3 technologies that allow you to parse XML documents:
    1) "Callbacks" (e.g. SAX in JAXP): You write a class that overrides 3 methods that will be called i) whenever the parser encounters a start tag, ii) an end tag, or iii) PCDATA. Drawback: You have to figure out where the heck in the document hierarchy you are when such a callback happens, because the same method is called on EACH start tag and similarly for the end tag and the PCDATA. You have to create the objects and put them into your own data structure - it's very tedious, but you have complete control. (Well, more or less.)
    2) "Tree" (e.g. DOM in JAXP, or it's better cousin JDOM): You call a parser that in one swoop creates an entire hierarchy that corresponds to the XML document. You don't get called on each tag as with SAX, you just get the root of the resulting tree. Drawback: All the nodes in the tree have the same type! You probably want to know which tags are in the document, don't you? Well, you'll have to traverse the tree and ask each node: What tag do you represent? And what are your attributes? (You get only strings in response even though your attributes often represent numbers.) Unless you want to display the tree - that's a nice application, you can do it as a tree model for JTree -, or otherwise don't care about the individual tags, DOM is not of much help, because you have to keep track where in the tree you are while you traverse it.
    3) Enter JAXB (or Castor, or ...): You give it a grammar of the XML documents you want to parse, or "unmarshall" as the fashion dictates to call it. (Actually the name isn't that bad, because "parsing" focuses on the input text while "unmarshalling" focuses on the objects you get, even though I'd reason that it should be marshalling that converts into objects and unmarshalling that converts objects to something else, and not vice versa but that's just my opinion.) The JAXB compiler creates a bunch of source files each with one (or now more) class(es) (and now interfaces) that correspond to the elements/tags of your grammar. (Now "compiler" is a true jevel of a misnomer, try to explain to students that after they run the "compiler", they still need to compile the sources the "compiler" generated with the real Java compiler!). Ok, you've got these sources compiled. Now you call one single method, unmarshall() and as a result you get the root node of the hierarchy that corresponds to the XML document. Sounds like DOM, but it's much better - the objects in the resulting tree don't have all the same type, but their type depends on the tag they represent. E.g if there is the tag <ball-game> then there will be an object of type myPackage.BallGame in your data structure. It gets better, if there is <score> inside <ball-game> and you have an object ballGame (of type BallGame) that you can simply call ballGame.getScore() and you get an object of type myPackage.Score. In other words, the child tags become properties of the parent object. Even better, the attributes become properties, too, so as far as your program is concerned there is no difference whether the property value was originally a tag or an attribute. On top of that, you can tell in your schema that the property has an int value - or another primitive type (that's like that in 1.0, in the early release you'll have to do it in the additional xjs file). So this is a very natural way to explore the data structure of the XML document. Of course there are drawbacks, but they are minor: daunting complexity and, as a consequence, very steep learning curve, documentation that leaves much to reader's phantasy - read trial and error - (the user's guide is too simplicistic and the examples too primitive, e.g. they don't even tell you how to make a schema where a tag has only attributes) and reference manual that has ~200 pages full of technicalities and you have to look with magnifying glas for the really usefull stuff, huge number of generated classes, some of which you may not need at all (and in 1.0 the number has doubled because each class has an accompanying interface), etc., etc. But overall, all that pales compared to the drastically improved efficiency of the programmer's efforts, i.e. your time. The time you'll spend learning the intricacies is well spent, you'll learn it once and then it will shorten your programming time all the time you use it. It's like C and Java, Java is order of magnitude more complex, but you'd probably never be sorry you gave up C.
    Of course the above essay leaves out lots and lots of detail, but I think that it touches the most important points.
    A word about JAXB 1.0 vs. Early Release (EA) version. If you have time, definitively learn 1.0, they are quite different and the main advantage is that the schema combines all the info that you had to formulate in the DTD and in the xjs file when using the EA version. I suggested EA was because you had a DTD already, but in retrospect, you better start from scratch with 1.0. The concepts in 1.0 are here to stay and once your surmounted the learning curve, you'll be glad that you don't have to switch concepts.
    When parser job is done,
    what kind of Java Object we will get? (String,
    InputStream or ...)See above, typically it's an object whose type is defined as a class (and interface in 1.0) within the sources that JABX generates. Or it can be a String or one of the primitive types - you tell the "compiler" in the schema (xjs file in EA) what you want!
    2. If we want to use JAXB, we have to contain a
    XJS-file? Something like:In EA, yes. In 1.0 no - it's all in the schema.
    I am very new to XML, is there any simpler way to get
    around them? It has already take me 4 days to find a
    simple parser which give it XML and DTD, then return
    to me Java objects ... I mean if that kind of parser
    exists....It'll take you probably magnitude longer that that to get really familiar with JAXB, but believe me it's worth it. You'll save countless days if not weeks once you'll start developing serious software with it. How long did it take you to learn Java and it's main APIs? You'll either invest the time learning how to use the software others have written, or you invest it writing it yourself. I'll take the former any time. But it's only my opinion...
    Jan

  • Mapping XML object to java object gives ClassCastException

    Hi All,
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    at $Proxy0.getMonster(Unknown Source)
    at serviceClient.TestServiceClient.main(TestServiceClient.java:46)
    Exception in thread "main"
    I tried to map a simple type:
    <types>
    <schema targetNamespace='java:biomaterials'
    xmlns='http://www.w3.org/1999/XMLSchema'>
    <element name="Monster">
    <complexType>
    <all>
    <element name="name"
    type="string"/>
    <element name="age"
    type="int"/>
    </all>
    </complexType>
    </element>
    </schema>
    </types>
    To the following java bean:
    package biomaterials;
    public class
    ster{
    private String name;
    private Integer age;
    public Monster(String name, int age) {
    this.name=name;
    this.age=new Integer(age);
    public String getName() {
    return name;
    public void setName(String s) {
    this.name=s;
    public Integer getAge() {
    return age;
    public void setAge(int n) {
    this.age=new Integer(n);
    Here is my client code:
    package serviceClient;
    import java.util.Properties;
    import weblogic.soap.codec.CodecFactory;
    import weblogic.soap.codec.SoapEncodingCodec;
    import weblog
    ic.soap.codec.LiteralCodec;
    import weblogic.soap.WebServiceProxy;
    import weblogic.soap.SoapMethod;
    import weblogic.soap.SoapType;
    import javax.naming.Context;
    import javax.naming.InitialContext;
    import javax.ejb.*;
    import biomaterials.ServiceSession;
    import java.io.File;
    import java.io.IOException;
    import org.w3c.dom.Element;
    import biomaterials.Monster;
    public class TestServiceClient
    public static void main( String[] arg ) throws Exception
    Properties h = new Properties();
    h.put(Context.INITIAL_CONTEXT_FACTORY,
    "weblogic.soap.http.SoapInitialContextFactory");
    h.put("weblogic.soap.wsdl.interface",
    ServiceSession.class.getName() );
    Context context = new InitialContext(h);
    ServiceSession serv =
    (ServiceSession)context.lookup("http://localhost:7001/biocat/biomaterials.Se
    rviceSession/biomaterials.ServiceSession.wsdl");
    //try
    //int result = serv.getTheNum();
    //String result=serv.getBIXBiologicals();
    //int result=serv.setBIXInfo("TARNUMBER");
    Monster result=serv.getMonster();
    System.out.print("The value is "+result);
    } /* end of main */
    } /* end of class */
    Here is the method in my stateless session bean:
    public Monster getMonster()
    return new Monster("Sully",3);
    And here is my whole wsdl file:
    <% response.setHeader( "Content-Type", "text/xml; charset=utf-8" ); %>
    <definitions
    targetNamespace="java:biomaterials"
    xmlns="http://schemas.xmlsoap.org/wsdl/"
    xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
    xmlns:xsd="http://www.w3.org/1999/XMLSchema"
    xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
    xmlns:tns="java:biomaterials"
    >
    <types>
    <schema targetNamespace='java:biomaterials'
    xmlns='http://www.w3.org/1999/XMLSchema'>
    <element name="Monster">
    <complexType>
    <all>
    <element name="name" type="string"/>
    <element name="age" type="int"/>
    </all>
    </complexType>
    </element>
    </schema>
    </types>
    <message name="getBIXBiologicalsRequest"></message>
    <message name="getBIXBiologicalsResponse">
    <part name="return" type="xsd:string" />
    </message>
    <message name="setBIXInfoRequest">
    <part name="arg0" type="xsd:string" />
    <part name="arg1" type="xsd:string" />
    <part name="arg2" type="xsd:integer" />
    </message>
    <message name="setBIXInfoResponse"></message>
    <message name="getMonsterRequest"></message>
    <message name="getMonsterResponse">
    <part name="body" element="tns:Monster"/>
    </message>
    <portType name="ServiceSessionPortType">
    <operation name="getBIXBiologicals">
    <input message="tns:getBIXBiologicalsRequest"/>
    <output message="tns:getBIXBiologicalsResponse"/>
    I am using weblogic 6.1 SP1 on WIN NT.
    Please help me out in this issue.
    Thanks in advance.
    Sapan

    HI !
    i dont think that the servicepack is an issue in this case.
    anyway i ahve tried it on 6.1SP4 and still getting similar results.
    any pointers will be highly appreciated.
    Thanks,
    sapan
    "manoj cheenath" <[email protected]> wrote in message
    news:[email protected]...
    I just skimmed through your email. You said you
    are using WLS 6.1 SP1. Can you try this using
    the latest SP. There are many bug fixes done
    after SP1.
    Web service support in 6.1 is very limited. But, It
    looks like 6.1 can handle the case you are trying out.
    regards,
    -manoj
    "Sapan Agarwal" <[email protected]> wrote in message
    news:[email protected]...
    Hi All,
    I am trying to map a specific XML object to a specific java object usingweb
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