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String to xml elements in java

I'm working on a project in java but I need to create and xml from a list of Strings on this way:
1: "/data/user/firstname/John"
2: "/data/user/middlename/F"
3: "/data/user/lastname/Thomas"
and the expected result should be this one:
<data>
<user>
<firstname>John</firstname>
<middlename>F</middlename>
<lastname>Thomas</lastname>
</user>
<data>
does anyone know if it possible in java? Thank you!

Working example with plain Java, without frameworks:
package test;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.File;
import java.util.Arrays;
public class Test {
public static void main(String[] args) throws ParserConfigurationException, TransformerException {
DocumentBuilderFactory documentFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentFactory.newDocumentBuilder();
Document document = documentBuilder.newDocument();
String a = "/data/user/firstname/John";
String b = "/data/user/middlename/F";
String c = "/data/user/lastname/Thomas";
// Create arrays from string and trim first empty space before first '/'
String [] arrayA = Arrays.copyOfRange(a.split("/"), 1, a.split("/").length);
String [] arrayB = Arrays.copyOfRange(b.split("/"), 1, b.split("/").length);
String [] arrayC = Arrays.copyOfRange(c.split("/"), 1, c.split("/").length);
Element parent = null;
for (int i = 0; i < arrayA.length; i++) {
// Append text to child nodes, do it at very end
if (i == arrayA.length - 1) {
Element element1 = (Element) document.getElementsByTagName(arrayA[i - 1]).item(0);
element1.appendChild(document.createTextNode(arrayA[i]));
Element element2 = (Element) document.getElementsByTagName(arrayB[i - 1]).item(0);
element2.appendChild(document.createTextNode(arrayB[i]));
Element element3 = (Element) document.getElementsByTagName(arrayC[i - 1]).item(0);
element3.appendChild(document.createTextNode(arrayC[i]));
break;
}
// if names are same, appending only one of them
if ((arrayA[i].equals(arrayB[i])) && (arrayA[i].equals(arrayC[i]))) {
System.out.println("true");
// create root node
if (i == 0) {
Element element = document.createElement(arrayA[i]);
document.appendChild(element);
parent = element;
System.out.println(document.toString());
} else {
Element element = document.createElement(arrayA[i]);
parent.appendChild(element);
parent = element;
System.out.println(document.toString());
}
// if node names at same levels are different, add all of them
} else {
System.out.println("false");
Element element1 = document.createElement(arrayA[i]);
Element element2 = document.createElement(arrayB[i]);
Element element3 = document.createElement(arrayC[i]);
parent.appendChild(element1);
parent.appendChild(element2);
parent.appendChild(element3);
}
}
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource domSource = new DOMSource(document);
StreamResult streamResult = new StreamResult(new File("result.xml"));
transformer.transform(domSource, streamResult);
}
}
Output of this program:
<?xml version="1.0" encoding="UTF-8" standalone="no"?><data><user><firstname>John</firstname><middlename>F</middlename><lastname>Thomas</lastname></user></data>
Or, write it to file, then, to last lines need to be:
StreamResult streamResult = new StreamResult(new File("result.xml"));
transformer.transform(domSource, streamResult);

Having trouble formatting multiple nodes from a text to XML conversion in Java

I have a Java program which converts text files to XML. I need the following format:
<app:defaults>
<app:schedules>
<app:run>
<app:schedule>schedule frequency value</app:schedule>
</app:run>
</app:schedules>
<app:rununit>
<app:agent>agent hostname value</app:agent>
</app:rununit>
</app:defaults>
The ending "/app:schedules" tag is not appending in the correct place
after the "/app:run" tag. The program is instead generating the following (which is not correct):
<app:defaults>
<app:schedules>
<app:run>
<app:schedule>schedule frequency value</app:schedule>
</app:run>
<app:rununit>
<app:agent>agent hostname value</app:agent>
</app:rununit>
</app:schedules>
</app:defaults>
The method in the java program is as follows: for this example i expilicitly added the text to each node to show what the data should be. - this method takes String args otherwise from the input text file.
public static void main(String[] args) {
String infile = args[0];
String outxml = args[1];
BufferedReader in;
StreamResult out;
DocumentBuilderFactory icFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder icBuilder;
try {
in = new BufferedReader(new FileReader(infile));
out = new StreamResult(outxml);
icBuilder = icFactory.newDocumentBuilder();
Document doc = icBuilder.newDocument();
Element mainRootElement = doc.createElementNS ("http://dto.cybermation.com/application", "app:appl");
mainRootElement.setAttribute("name", "TESTSHEDULE");
doc.appendChild(mainRootElement);
...
private static Node processTagElements3(Document doc, String "app:defaults") {
Element node1 = doc.createElement("app:schedules");
Element node2 = doc.createElement("app:run");
Element node3 = doc.createElement("app:schedule");
Element node4 = doc.createElement("app:rununit");
Element node5 = doc.createElement("app:agent");
node1.appendChild(node2);
node2.appendChild(node3);
node3.appendChild(doc.createTextNode("schedule frequency value"));
node1.appendChild(node4);
node4.appendChild(node5);
node5.appendChild(doc.createTextNode("agent hostname value"));
return node1;
}
I've tested this using different appenchild parameters between these nodes but ran up against a brick wall with formatiing this output. Any suggestions, advice on the best way to organize the node tag insertions is really appreciated. There could be somthing simple I am missing.

Note: I'm not an expert in for XML parsing in Java.
Just trying to stitch some example codes I got in my machine and see if that solves your problem. So here it is.
Example code:
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
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 java.io.StringReader;
import java.io.StringWriter;\
public class test {
public static void main(String[] args) throws Exception {
String xml = "<app:defaults>\n" +
" <app:schedules>\n" +
" <app:run>\n" +
" <app:schedule>schedule frequency value</app:schedule>\n" +
" </app:run>\n" +
" </app:schedules>\n" +
" <app:rununit>\n" +
" <app:agent>agent hostname value</app:agent>\n" +
" </app:rununit> \n" +
" </app:defaults>";
Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder()
.parse(new InputSource(new StringReader(xml)));
NodeList errNodes = doc.getElementsByTagName("error");
if (errNodes.getLength() > 0) {
Element err = (Element)errNodes.item(0);
System.out.println(err.getElementsByTagName("errorMessage")
.item(0).getTextContent());
} else {
// success
DOMSource domSource = new DOMSource(doc);
StringWriter writer = new StringWriter();
StreamResult result = new StreamResult(writer);
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.transform(domSource, result);
System.out.println(writer.toString());
}
}
Output:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<app:defaults>
<app:schedules>
<app:run>
<app:schedule>schedule frequency value</app:schedule>
</app:run>
</app:schedules>
<app:rununit>
<app:agent>agent hostname value</app:agent>
</app:rununit>
</app:defaults>
This code seems to be working as what you will expecting it to be. Give it a try and let me know whether the solution is okay.
I think the idea here is to use pre-baked Java APIs than writing our own parser. Because these APIs are generally more reliable since many others would be using it daily.

Things would be way easier if you had named your nodes with meaningful names (let's say runNode, etc), don't you think?
That being said, this is probably what you want:
Element defaultNode = doc.createElement("app:default");
Element schedulesNode = doc.createElement("app:schedules");
Element runNode = doc.createElement("app:run");
Element scheduleNode = doc.createElement("app:schedule");
Element rununitNode = doc.createElement("app:rununit");
Element agentNode = doc.createElement("app:agent");
defaultNode.appendChild(schedulesNode);
schedulesNode.appendChild(runNode);
runNode.appendChild(scheduleNode);
scheduleNode.appendChild(doc.createTextNode("schedule frequency value"));
defaultNode.appendChild(rununitNode);
rununitNode.appendChild(agentNode);
agentNode.appendChild(doc.createTextNode("agent hostname value"));
Note the defaultNode used.

Thanks all!
I decided to modify the script to accept file input as my arg - this works fine now and is a simpler solution:
public class test2 {
public static void main(String[] args) throws Exception {
File file = new File(args[0]);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try{
DocumentBuilder builder = factory.newDocumentBuilder();
FileInputStream fis = new FileInputStream(file);
InputSource is = new InputSource(fis);
Document doc = builder.parse(is);
NodeList errNodes = doc.getElementsByTagName("error");
if (errNodes.getLength() > 0) {
Element err = (Element)errNodes.item(0);
System.out.println(err.getElementsByTagName("errorMessage").item(0).getTextContent());
} else {
// success
DOMSource domSource = new DOMSource(doc);
StringWriter writer = new StringWriter();
StreamResult result = new StreamResult(writer);
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.transform(domSource, result);
System.out.println(writer.toString());
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

how to create a xml structure programatically in java [closed]

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Improve this question
i want to create a xml structure programatically in java
the structure is like this
<?xml version="1.0" encoding="UTF-8"?>
<System token="com.test.dummy">
<Parameter token="xyz">
<Value>4</Value>
</Parameter>
</System>
i have to create a temporary file and then insert this data in the file.
I am new to this area, can someone help me.

Use DOMParser best way to write xml in java
http://docs.oracle.com/cd/B13789_01/appdev.101/b12024/oracle/xml/parser/v2/DOMParser.html
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
public class WriteXMLFile {
public static void main(String argv[]) {
try {
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
// root elements
Document doc = docBuilder.newDocument();
Element rootElement = doc.createElement("company");
doc.appendChild(rootElement);
// staff elements
Element staff = doc.createElement("Staff");
rootElement.appendChild(staff);
// set attribute to staff element
Attr attr = doc.createAttribute("id");
attr.setValue("1");
staff.setAttributeNode(attr);
// shorten way
// staff.setAttribute("id", "1");
// firstname elements
Element firstname = doc.createElement("firstname");
firstname.appendChild(doc.createTextNode("yong"));
staff.appendChild(firstname);
// lastname elements
Element lastname = doc.createElement("lastname");
lastname.appendChild(doc.createTextNode("mook kim"));
staff.appendChild(lastname);
// nickname elements
Element nickname = doc.createElement("nickname");
nickname.appendChild(doc.createTextNode("mkyong"));
staff.appendChild(nickname);
// salary elements
Element salary = doc.createElement("salary");
salary.appendChild(doc.createTextNode("100000"));
staff.appendChild(salary);
// write the content into xml file
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
StreamResult result = new StreamResult(new File("C:\\file.xml"));
// Output to console for testing
// StreamResult result = new StreamResult(System.out);
transformer.transform(source, result);
System.out.println("File saved!");
} catch (ParserConfigurationException pce) {
pce.printStackTrace();
} catch (TransformerException tfe) {
tfe.printStackTrace();
}
}
}
see this http://www.mkyong.com/java/how-to-create-xml-file-in-java-dom/

You can also use StringBuilderto form your xml struture. StringBuilder is light weight but does not know XML so doesn't validate structure at all.But its worth going for it because of its simplicity.
StringBuilder xmlBuilder = new StringBuilder("<?xml version="1.0" encoding="UTF-8"?>");
xmlBuilder.append("<System token=\"com.test.dummy\">");
xmlBuilder.append("<Parameter token=\"xyz\">").append("<Value>4</Value>");
xmlBuilder.append("</Parameter>");
xmlBuilder.append("</System>");
xmlBuilder.toString();
You can also make your elements accept dynamic values.
Make sure your xml document structure is correct

Reading the output from console and print in XML file in java [duplicate]

This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
How could I read Java Console Output into a String buffer
I know how to read input from user and put it on XML file.Here is the sample:
from http://www.mkyong.com/java/how-to-create-xml-file-in-java-dom/
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
public class WriteXMLFile {
public static void main(String argv[]) {
try {
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
// root elements
Document doc = docBuilder.newDocument();
Element rootElement = doc.createElement("company");
doc.appendChild(rootElement);
// staff elements
Element staff = doc.createElement("Staff");
rootElement.appendChild(staff);
// set attribute to staff element
Attr attr = doc.createAttribute("id");
attr.setValue("1");
staff.setAttributeNode(attr);
// shorten way
// staff.setAttribute("id", "1");
// firstname elements
Element firstname = doc.createElement("firstname");
firstname.appendChild(doc.createTextNode("yong"));
staff.appendChild(firstname);
// lastname elements
Element lastname = doc.createElement("lastname");
lastname.appendChild(doc.createTextNode("mook kim"));
staff.appendChild(lastname);
// nickname elements
Element nickname = doc.createElement("nickname");
nickname.appendChild(doc.createTextNode("mkyong"));
staff.appendChild(nickname);
// salary elements
Element salary = doc.createElement("salary");
salary.appendChild(doc.createTextNode("100000"));
staff.appendChild(salary);
// write the content into xml file
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
StreamResult result = new StreamResult(new File("C:\\file.xml"));
// Output to console for testing
// StreamResult result = new StreamResult(System.out);
transformer.transform(source, result);
System.out.println("File saved!");
} catch (ParserConfigurationException pce) {
pce.printStackTrace();
} catch (TransformerException tfe) {
tfe.printStackTrace();
}
}
}
but my question is how to read the output from the console in java and print it in specified XML file.

I am not sure what exactly you mean by "reading the output from the console" but you can intercept calls to System.out by using http://docs.oracle.com/javase/6/docs/api/java/lang/System.html#setOut%28java.io.PrintStream%29.
If you elaborate more on what you are trying to do I can be more specific.

XML Node to String in Java

I came across this piece of Java function to convert an XML node to a Java String representation:
private String nodeToString(Node node) {
StringWriter sw = new StringWriter();
try {
Transformer t = TransformerFactory.newInstance().newTransformer();
t.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
t.setOutputProperty(OutputKeys.INDENT, "yes");
t.transform(new DOMSource(node), new StreamResult(sw));
} catch (TransformerException te) {
System.out.println("nodeToString Transformer Exception");
}
return sw.toString();
}
It looks straightforward in that it wants the output string doesn't have any XML declaration and it must contain indentation.
But I wonder how the actual output should be, suppose I have an XML node:
<p><media type="audio" id="au008093" rights="wbowned">
<title>Bee buzz</title>
</media>Most other kinds of bees live alone instead of in a colony. These bees make
tunnels in wood or in the ground. The queen makes her own nest.</p>
Could I assume the resulting String after applying the above transformation is:
"media type="audio" id="au008093" rights="wbowned" title Bee buzz title /media"
I want to test it myself, but I have no idea on how to represent this XML node in the way this function actually wants.
I am bit confused, and thanks in advance for the generous help.

All important has already been said. I tried to compile the following code.
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.StringWriter;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
public class Test {
public static void main(String[] args) throws Exception {
String s =
"<p>" +
" <media type=\"audio\" id=\"au008093\" rights=\"wbowned\">" +
" <title>Bee buzz</title>" +
" " +
" Most other kinds of bees live alone instead of in a colony." +
" These bees make tunnels in wood or in the ground." +
" The queen makes her own nest." +
"</p>";
InputStream is = new ByteArrayInputStream(s.getBytes());
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document d = db.parse(is);
Node rootElement = d.getDocumentElement();
System.out.println(nodeToString(rootElement));
}
private static String nodeToString(Node node) {
StringWriter sw = new StringWriter();
try {
Transformer t = TransformerFactory.newInstance().newTransformer();
t.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
t.setOutputProperty(OutputKeys.INDENT, "yes");
t.transform(new DOMSource(node), new StreamResult(sw));
} catch (TransformerException te) {
System.out.println("nodeToString Transformer Exception");
}
return sw.toString();
}
}
And it produced the following output:
<p> <media id="au008093" rights="wbowned" type="audio"> <title>Bee buzz</title> </media> Most other kinds of bees live alone instead of in a colony. These bees make tunnels in wood or in the ground. The queen makes her own nest.</p>
You can further tweak it by yourself. Good luck!

You have an XML respesentation in a DOM tree.
For example you have opened an XML file and you have passed it in the DOM parser.
As a result a DOM tree in memory with your XML is created.
Now you can only access the XML info via traversal of the DOM tree.
If you need though, a String representation of the XML info of the DOM tree you use a transformation.
This happens since it is not possible to get the String representation directly from a DOM tree.
So if for example as Node node you pass in nodeToString is the root element of the XML doc then the result is a String containing the original XML data.
The tags will still be there. I.e. you will have a valid XML representation. Only this time will be in a String variable.
For example:
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder parser = factory.newDocumentBuilder();
Document xmlDoc = parser.parse(file);//file has the xml
String xml = nodeToString(xmlDoc.getDocumentElement());//pass in the root
//xml has the xml info. E.g no xml declaration. Add it
xml = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?> + xml;//bad to append this way...
System.out.println("XML is:"+xml);
DISCLAIMER: Did not even attempt to compile code. Hopefully you understand what you have to do