Store and load objects to XML files using DOM
Hello everybody,
a quick question for all of you.
I'm designing a desktop application which requires a lot of custom objects to be stored into XML files and later reloaded from them. I'm planning to use DOM, creating an interface like this:
public interface StorableAsDom
// Create an object from a DOM tree
static Object createFromDom(org.w3c.dom.Node root) throws InvalidDomException;
// Get the DOM tree for an object
org.w3c.dom.DocumentFragment getDomTree(org.w3c.dom.Document doc) throws DOMException;
Then, every class which needs to be saved should implement the above interface. This way everything works fine.
My question is: do you know any available java package which already provides similar functionalities?
I'd like not to reinvent the wheel if I can; time is always a critical factor.
Thanks in advance to all of you.
Cheers
marcocaco
Hi,
When I need object -xml binding, I usually have two methods -
one for reading & one for writing (the "VOs" below stands for "Value Objects" [getters/setters & empty constructor only]):
READ: loadXML (= XML2VOs)
1.XML2DOM - this method can be generic
2.DOM2VOs - populate your VOs from the DOM just obtained in 1.
WRITE: saveXML (=VOs2XML)
1.VOs2DOM - create a new DOM document from your VOs' fields.
2.DOM2XML - this method can be generic
It would be nice (but dificult & not very elegant) to make DOM2VOs & VOs2DOM generic. If such methods will be written, they should be combined with the XML2DOM & DOM2XML (resp.) & then you would have two generic methods XML2VOs & VOs2XML... (Alternativelly, you can get Sun's JAXB package which does object-xml binding but this is not part of the JDK 5)
If what I have outlined above sounds like what you want to do, let me know if you want more details (eg. how the DOM2VOs would be implemented etc)...
Similar Messages
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Updating XML file using DOM parser
Hi,
Can someone help me, how to update following XML file using DOM parser.
The following is my XML file.
<students>
<student>
<id>1</id>
<name>abc</name>
</student>
<student>
<id>2</id>
<name>xyz</name>
</student>
<student>
<id>3</id>
<name/>
</student>
<student>
<id>4</id>
<name>ijk</name>
</student>
<student>
<id>5</id>
<name></name>
</student>
</students>Consider, I will input 2 fields, ie., id & name. For the matching Id, the name has to be updated.
Though, I have achieved this, but I am unable to update the value for 3rd record, & 5th record ie., id=3 & id=5. Since, these are blank.
Thanks.Some <name> elements have a child node which is a text node. From what you say it appears you know how to change those text nodes.
The other <name> elements don't have any child nodes. But you want one. This suggests to me that you need code that creates a text node and adds it to the <name> element as its child. -
Problem writing xml file using DOM
Hi,
I am trying to write a xml file using DOM. I am using xalan 2.5, xerces 1.4.4, jdk 1.3.1 in JRun 3 on windows.
The code where I get exception :
TransformerFactory tFactory = TransformerFactory.newInstance();
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I get the runtime error as follows:
javax.servlet.ServletException: null
java.lang.NoSuchMethodError
at org.apache.xml.utils.DOM2Helper.getNamespaceOfNodeDOM2Helper.java:342)
at org.apache.xml.utils.TreeWalker.startNode(TreeWalker.java:387)
at org.apache.xml.utils.TreeWalker.traverse(TreeWalker.java:202)
at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:343)
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Any suggestion?
Thanks in advancexalan is included in JRun 4. However JRun 3 does not.
However I tried with the same code in JRun3 in different system. The error is completely different. I understand this is because of different version of files. trying to solve ;)
Here my new exception
javax.servlet.ServletException: org/w3c/dom/ranges/DocumentRange
java.lang.NoClassDefFoundError: org/w3c/dom/ranges/DocumentRange
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:493)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:248)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:493)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:248)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
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at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at org.apache.xerces.jaxp.DocumentBuilderImpl.(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown Source)
at com.cybell.appl.deliveryorder.cmd.CreateXMLDOFile.createFile(CreateXMLDOFile.java:73)
at com.cybell.appl.deliveryorder.cmd.CreateXMLDOFile.execute(CreateXMLDOFile.java:36)
at com.cybell.appl.framework.cmd.BaseCommand.start(BaseCommand.java:50)
at com.cybell.appl.framework.control.BaseController.service(BaseController.java:38)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
at allaire.jrun.servlet.JRunSE.service(../servlet/JRunSE.java:1013)
at allaire.jrun.servlet.JRunSE.runServlet(../servlet/JRunSE.java:925)
at allaire.jrun.servlet.JRunNamedDispatcher.forward(../servlet/JRunNamedDispatcher.java:34)
at allaire.jrun.servlet.Invoker.service(../servlet/Invoker.java:84)
at allaire.jrun.servlet.JRunSE.service(../servlet/JRunSE.java:1013)
at allaire.jrun.servlet.JRunSE.runServlet(../servlet/JRunSE.java:925)
at allaire.jrun.servlet.JRunRequestDispatcher.forward(../servlet/JRunRequestDispatcher.java:88)
at allaire.jrun.servlet.JRunSE.service(../servlet/JRunSE.java:1131)
at allaire.jrun.servlet.JvmContext.dispatch(../servlet/JvmContext.java:330)
at allaire.jrun.http.WebEndpoint.run(../http/WebEndpoint.java:107)
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at allaire.jrun.WorkerThread.run(../WorkerThread.java:75) -
Trouble loading images from XML files using AS
I am creating a slideshow and found a script that will load
the images via an XML document, but I believe the script is for an
absolute references image such as <a href="
http://www.myimages.com/image1.jpg">
and I want to be able to have them in a file and reference the file
in the XML such as :
<pic>
<image>images/04_02.jpg</image>
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</pic>
When I test movie I get an error
Error opening URL "path_to_image/01_02.jpg"
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function loadXML(loaded) {
if (loaded) {
xmlNode = this.firstChild;
image = [];
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image
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firstImage();
} else {
content = "file not loaded!";
xmlData = new XML();
xmlData.ignoreWhite = true;
xmlData.onLoad = loadXML;
xmlData.load("images.xml");
listen = new Object();
listen.onKeyDown = function() {
if (Key.getCode() == Key.LEFT) {
prevImage();
} else if (Key.getCode() == Key.RIGHT) {
nextImage();
Key.addListener(listen);
previous_btn.onRelease = function() {
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next_btn.onRelease = function() {
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p = 0;
this.onEnterFrame = function() {
filesize = picture.getBytesTotal();
loaded = picture.getBytesLoaded();
preloader._visible = true;
if (loaded != filesize) {
preloader.preload_bar._xscale = 100*loaded/filesize;
} else {
preloader._visible = false;
if (picture._alpha<100) {
picture._alpha += 10;
function nextImage() {
if (p<(total-1)) {
p++;
if (loaded == filesize) {
picture._alpha = 0;
picture.loadMovie(image[p], 1);
desc_txt.text = description[p];
picture_num();
function prevImage() {
if (p>0) {
p--;
picture._alpha = 0;
picture.loadMovie(image[p], 1);
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picture_num();
function firstImage() {
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picture.loadMovie(image[0], 1);
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picture_num();
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}something is still amiss here becuase I placed the xml and
images at the root level and the images still do not load. I don't
get any kind of error and Trace tells me the file is being loaded.
took out the /images/ part so that in the XML it's now :
<pic>
<image>07_02.jpg</image>
<caption>Image Description</caption>
</pic>
and here is the AS code:
var image:Array = new Array();
var description:Array = new Array();
function loadXML(loaded) {
if (loaded) {
var xmlNode:XMLNode = this.firstChild;
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for (var i:Number = 0; i<total; i++) {
image.push(xmlNode.childNodes
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trace('File Name Value: '+xmlNode.childNodes);
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xmlData.ignoreWhite = true;
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xmlData.load("images.xml");
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listen.onKeyDown = function() {
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Key.addListener(listen);
previous_btn.onRelease = function() {
prevImage();
next_btn.onRelease = function() {
nextImage();
p = 0;
this.onEnterFrame = function() {
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loaded = picture.getBytesLoaded();
preloader._visible = true;
if (loaded != filesize) {
preloader.preload_bar._xscale = 100*loaded/filesize;
} else {
preloader._visible = false;
if (picture._alpha<100) {
picture._alpha += 10;
function nextImage() {
if (p<(total-1)) {
p++;
if (loaded == filesize) {
picture._alpha = 0;
picture.loadMovie(image[p], 1);
desc_txt.text = description[p];
picture_num();
function prevImage() {
if (p>0) {
p--;
picture._alpha = 0;
picture.loadMovie(image[p], 1);
desc_txt.text = description[p];
picture_num();
function firstImage() {
if (loaded == filesize) {
picture._alpha = 0;
picture.loadMovie(image[0], 1);
desc_txt.text = description[0];
picture_num();
function picture_num() {
current_pos = p+1;
pos_txt.text = current_pos+" / "+total;
} -
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
AshishHi
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++)
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} -
How to search and replace in an xml file using java
Hi all,
I am new to java and Xml Programming.
I have to search and replace a value Suresh with some other name in the below xml file.
Any help of code in java it is of great help,and its very urgent.
I am using java swings for generating two text boxes and a button but i am not able to search in the xml file thru the values that are entered into these text boxes.
Thanks in advance.
**XML File*
<?xml version="1.0" encoding="ISO-8859-1"?>
<student>
<stud_name>Suresh</stud_name>
<stud_age>40</stud_age>
</student>Also i am using SAX Parser in the java program
any help of code or any tutorials for sax parisng is very urgent please help me to resolve this problem
Edited by: Karthik84 on Aug 19, 2008 1:45 AM
Edited by: Karthik84 on Aug 19, 2008 3:15 AMUsing XPath to locate the elements you are after is very easy.
Try something like this:
import java.io.File;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
public class BasicXMLReplaceWithDOM4J {
static String inputFile = "C:/student.xml";
static String outputFile = "C:/studentRenamed.xml";
public static void main(String[] args) throws Exception {
// Read xml and build a DOM document
Document doc = DocumentBuilderFactory.newInstance()
.newDocumentBuilder().parse(new InputSource(inputFile));
// Use XPath to find all nodes where student is named 'Suresh'
XPath xpath = XPathFactory.newInstance().newXPath();
NodeList nodes = (NodeList)xpath
.evaluate("//stud_name[text()='Suresh']", doc, XPathConstants.NODESET);
// Rename these nodes
for (int idx = 0; idx < nodes.getLength(); idx++) {
nodes.item(idx).setTextContent("Suresh-Renamed");
// Write the DOM document to the file
Transformer xformer = TransformerFactory.newInstance().newTransformer();
xformer.transform(new DOMSource(doc), new StreamResult(new File(outputFile)));
}- Roy -
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 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 AMHi 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 -
Writing to a xml file using DOM API
Hi,
I try to write some elements in an existing xml file.
Document doc = null;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = null;
try
builder = factory.newDocumentBuilder();
doc = builder.parse("c:/WUTEMP/rules.xml");
Element rules = doc.getDocumentElement();
Element eRule = doc.createElement("rule");
rules.appendChild(eRule);
Element ruleSyntax = doc.createElement("rule-syntax");
eRule.appendChild(ruleSyntax);
ruleSyntax.appendChild(doc.createTextNode(syntax));
It runs without errors but the xml file isn't changed. Some ideas ?
Structure of xml file:
<rules>
</rules>
And executing code above must resulting in :
<rules>
<rule-syntax> </rule-syntax>
</rules>
But nothing happens with the file.Code below did the trick:
Transformer xformer = TransformerFactory.newInstance().newTransformer();
DOMSource source = new DOMSource(doc);
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xformer.transform(source, result); -
How to parse nested xml file using dom
i want to parse nested xml file
please tell me how to parse nested xml
for eg.
<xml>
<row>
<name>Rahul<name>
<row><newXml>
<newXML>
<Row>
<code>12</code>
</Row>
<newXML>
<XML>
please tell how to parse this fileNormally if you have no idea about X, the first thing you should do is google "X tutorial". You will find plenty of them out there. And the advantage is, they are better written than whatever we spend two minutes throwing together here. Not to mention that it saves us the two minutes.
But if you have specific questions with your SAX parser when you get it going, then ask them here. Actually, ask them in the XML forum here, not this one. -
Problem while parsing xml file using DOM
I have a xml file NewXML.xml. When I parse it I'm not getting the expected output: I'm trying to get only the value of the "name" tag. When I tried getElementByTagName("name"), I'm not getting the expected result.
Here is my xml file based on a schema
<?xml version="1.0" encoding="UTF-8"?>
<student xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="NewXMLSchema.xsd">
<name>john</name>
<id>1000</id>
</student>
Coding:
public static void main(String argv[])
DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
Document document ;
try {
DocumentBuilder builder = factory.newDocumentBuilder();
document = builder.parse( "NewXML.xml" );
NodeList nodeList = (document.getElementsByTagName("name") );
System.out.println(nodeList.getLength()+" node list "+nodeList.item(0));
System.out.println(nodeList.item(0).getNodeValue());
NodeList nodeList1 = nodeList.item(0).getChildNodes();
System.out.println(nodeList1.getLength()+" node list "+nodeList1.item(0));
System.out.println(nodeList1.item(0).getNodeValue());
When I ran the above coding I got:
1 node list [name: null]
null
1 node list [#text: name]
name
What should I do to get the result "john" inorder to change it
Thanks
rathiSystem.out.println(nodeList.item(0).getFirstChild().getNodeValue());
-
Importing xml file using standard maps in mdm
Hi Experts,
In a scenario of getting the data from ECC system to the MDM system(using MDM standard business contents and standard Maps), we are two cases.
Case 1 : Using MDM_CLNT_EXTR, we extract the main table records into the standard IDoc structure and sent to PI and PI converts this standard IDoc in to an XML file and sends it to the inbound folder of MDM and from there using the standard map, it is imported into MDM.(most common method of implementation)
Case 2: we are using XML File option in Partner Profile to store the XML file in the Global Directory of ECC system and we are generating XML files using the transactions BD10, BD12 and BD14 for the respective business objects.And then copy these XML files from the Global directory and plae it in the inbound folder of MDM manually.
Now the question is can the xml file in the case 2 be used as a substitute for the xml of case1 and
can we use the same standard map to import the XML file abtained from case2?
Please share your experience to solve this issue.
Thanks and Regards,
Sravan.Hi Sravan,
this depends on the business content you are using. Some parts of the content use XSLT mappings on PI to change the message content. Please refer to the related SAP content notes for details:
MDM Business Partner Content (SAP Note 1035773)
MDM Customer Content (SAP Note 1252884)
MDM Employee Content (SAP Note 1268212)
MDM Material Content (SAP Note 1255401)
MDM Product Content (SAP Note 1252846)
MDM Vendor Content (SAP Note 1252883)
Best regards
Michael -
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
GauravCheck 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()); -
Creating XML File Using xmldom Package
How can I create an XML file from scratch using the PL/SQL xmldom package?
I want to create an XML file using the xmldom package instead of building the individual tags as strings of VARCHAR2 character data. There is quite a bit of documentation regarding manipulating input XML files using DOM -- but not for creating XML files from scratch given known "tagnames" (<lastName>) and retrieved database "values" ("Smith").
<person>
<lastName>Smith</lastName>
</person>
Is there any documentation that you can recommend?
Thank you.Here is an example.
The create_file procedure creates the file.
The other procedures are generic procs that can be used with any XML.
PROCEDURE create_file_with_root(po_xmldoc OUT xmldom.DOMDocument,
pi_root_tag IN VARCHAR2,
po_root_element OUT xmldom.domelement,
po_root_node OUT xmldom.domnode,
pi_doctype_url IN VARCHAR2) IS
xmldoc xmldom.DOMDocument;
root xmldom.domnode;
root_node xmldom.domnode;
root_element xmldom.domelement;
record_node xmldom.domnode;
newelenode xmldom.DOMNode;
BEGIN
xmldoc := xmldom.newDOMDocument;
xmldom.setVersion(xmldoc, '1.0');
xmldom.setDoctype(xmldoc, pi_root_tag, pi_doctype_url,'');
-- Create the root --
root := xmldom.makeNode(xmldoc);
-- Create the root element in the file --
create_element_and_append(xmldoc, pi_root_tag, root, root_element, root_node);
po_xmldoc := xmldoc;
po_root_node := root_node;
po_root_element := root_element;
END create_file_with_root;
PROCEDURE create_element_and_append(pi_xmldoc IN OUT xmldom.DOMDocument,
pi_element_name IN VARCHAR2,
pi_parent_node IN xmldom.domnode,
po_new_element OUT xmldom.domelement,
po_new_node OUT xmldom.domnode) IS
element xmldom.domelement;
child_node xmldom.domnode;
newelenode xmldom.DOMNode;
BEGIN
element := xmldom.createElement(pi_xmldoc, pi_element_name);
child_node := xmldom.makeNode(element);
-- Append the new node to the parent --
newelenode := xmldom.appendchild(pi_parent_node, child_node);
po_new_node := child_node;
po_new_element := element;
END create_element_and_append;
FUNCTION create_text_element(pio_xmldoc IN OUT xmldom.DOMDocument, pi_element_name IN VARCHAR2,
pi_element_data IN VARCHAR2, pi_parent_node IN xmldom.domnode) RETURN xmldom.domnode IS
parent_node xmldom.domnode;
child_node xmldom.domnode;
child_element xmldom.domelement;
newelenode xmldom.DOMNode;
textele xmldom.DOMText;
compnode xmldom.DOMNode;
BEGIN
create_element_and_append(pio_xmldoc, pi_element_name, pi_parent_node, child_element, child_node);
parent_node := child_node;
-- Create a text node --
textele := xmldom.createTextNode(pio_xmldoc, pi_element_data);
child_node := xmldom.makeNode(textele);
-- Link the text node to the new node --
compnode := xmldom.appendChild(parent_node, child_node);
RETURN newelenode;
END create_text_element;
PROCEDURE create_file IS
xmldoc xmldom.DOMDocument;
root_node xmldom.domnode;
xml_doctype xmldom.DOMDocumentType;
root_element xmldom.domelement;
record_element xmldom.domelement;
record_node xmldom.domnode;
parent_node xmldom.domnode;
child_node xmldom.domnode;
newelenode xmldom.DOMNode;
textele xmldom.DOMText;
compnode xmldom.DOMNode;
BEGIN
xmldoc := xmldom.newDOMDocument;
xmldom.setVersion(xmldoc, '1.0');
create_file_with_root(xmldoc, 'root', root_element, root_node, 'test.dtd');
xmldom.setAttribute(root_element, 'interface_type', 'EXCHANGE_RATES');
-- Create the record element in the file --
create_element_and_append(xmldoc, 'record', root_node, record_element, record_node);
parent_node := create_text_element(xmldoc, 'title', 'Mr', record_node);
parent_node := create_text_element(xmldoc, 'name', 'Joe', record_node);
parent_node := create_text_element(xmldoc,'surname', 'Blogs', record_node);
-- Create the record element in the file --
create_element_and_append(xmldoc, 'record', root_node, record_element, record_node);
parent_node := create_text_element(xmldoc, 'title', 'Mrs', record_node);
parent_node := create_text_element(xmldoc, 'name', 'A', record_node);
parent_node := create_text_element(xmldoc, 'surname', 'B', record_node);
-- write the newly created dom document into the buffer assuming it is less than 32K
xmldom.writeTofile(xmldoc, 'c:\laiki\willow_data\test.xml');
EXCEPTION
WHEN xmldom.INDEX_SIZE_ERR THEN
RAISE_APPLICATION_ERROR(-20120, 'Index Size error');
WHEN xmldom.DOMSTRING_SIZE_ERR THEN
RAISE_APPLICATION_ERROR(-20120, 'String Size error');
WHEN xmldom.HIERARCHY_REQUEST_ERR THEN
RAISE_APPLICATION_ERROR(-20120, 'Hierarchy request error');
WHEN xmldom.WRONG_DOCUMENT_ERR THEN
RAISE_APPLICATION_ERROR(-20120, 'Wrong doc error');
WHEN xmldom.INVALID_CHARACTER_ERR THEN
RAISE_APPLICATION_ERROR(-20120, 'Invalid Char error');
WHEN xmldom.NO_DATA_ALLOWED_ERR THEN
RAISE_APPLICATION_ERROR(-20120, 'Nod data allowed error');
WHEN xmldom.NO_MODIFICATION_ALLOWED_ERR THEN
RAISE_APPLICATION_ERROR(-20120, 'No mod allowed error');
WHEN xmldom.NOT_FOUND_ERR THEN
RAISE_APPLICATION_ERROR(-20120, 'Not found error');
WHEN xmldom.NOT_SUPPORTED_ERR THEN
RAISE_APPLICATION_ERROR(-20120, 'Not supported error');
WHEN xmldom.INUSE_ATTRIBUTE_ERR THEN
RAISE_APPLICATION_ERROR(-20120, 'In use attr error');
WHEN OTHERS THEN
dbms_output.put_line('exception occured' || SQLCODE || SUBSTR(SQLERRM, 1, 100));
END create_file; -
How to read the data from Excel file and Store in XML file using java
Hi All,
I got a problem with Excel file.
My problem is how to read the data from Excel file and Store in XML file using java excel api.
For getting the data from Excel file what are all the steps i need to follow to get the correct result.
Any body can send me the code (with java code ,Excel sheet) to this mail id : [email protected]
Thanks & Regards,
Sreenu,
[email protected],
india,If you want someone to do your work, please have the courtesy to provide payment.
http://www.rentacoder.com
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