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How to extract xml attribute values in java

I am trying to extract the xml values in java
Below is the xml and I want to extract userUuid from the xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ResponseSet vers="1.0" svcid="session" reqid="3">
<Response><![CDATA[
<SessionResponse vers="1.0" reqid="0">
<GetSession>
<Session sid="******" stype="user" cid="uid=****" cdomain="o=nhs" maxtime="0" maxidle="0" maxcaching="0" timeidle="0" timeleft="****" state="valid">
<Property name="userUuid" value="555524799109"></Property>
</Session>
</GetSession>
</SessionResponse>]]>
</Response>
</ResponseSet>
I referred this links none of them worked from me
Read XML in Java with XML attributes
How can I read Xml attributes using Java?
Also I tried
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
dbFactory.setNamespaceAware(true);
dbFactory.setValidating(false);
DocumentBuilder docBuilder = dbFactory.newDocumentBuilder();
ByteArrayInputStream inputStream = new ByteArrayInputStream(sXMLData.getBytes("UTF-8"));
Document document = docBuilder.parse(inputStream);
NodeList nodeList = document.getElementsByTagName("Property");
System.out.println(nodeList.getLength());
for (int i = 0; i < nodeList.getLength(); i++) {
Element element = (Element) nodeList.item(i);
String el = element.getAttribute("name");
System.out.println(el);
}

Just posting an answer if someone faces same issue
public String parseXMLResponse(String sXMLData) throws IOException, SAXException, ParserConfigurationException {
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
dbFactory.setNamespaceAware(true);
dbFactory.setValidating(false);
DocumentBuilder docBuilder = dbFactory.newDocumentBuilder();
ByteArrayInputStream inputStream = new ByteArrayInputStream(sXMLData.getBytes("UTF-8"));
Document document = docBuilder.parse(inputStream);
NodeList nodeList = document.getElementsByTagName("Property");
String userUuId = null;
for (int i = 0; i < nodeList.getLength(); i++) {
Element element = (Element) nodeList.item(i);
String el = element.getAttribute("name");
if(el.equalsIgnoreCase("UserId"))
{
userUuId = element.getAttribute("value");
break;
}
}
return userUuId;
}

Java XML Parsing - Parse XML with repeating Nodes

Folks, I am trying to parse the below XML structure:
<root>
<data>
<doc>
<doc1></doc1>
<doc2></doc2>
</doc>
<INFO>
<INFO1></INFO1>
<INFO2></INFO2>
<INFO3></INFO3>
<INFO4></INOF4>
<ASSOC_SECTION>
<ASSOC_SECTION1>hello1</ASSOC_SECTION1>
<ASSOC_SECTION2></ASSOC_SECTION2>
</ASSOC_SECTION>
<ASSOC_SECTION>
<ASSOC_SECTION1>hello2</ASSOC_SECTION1>
<ASSOC_SECTION2></ASSOC_SECTION2>
</ASSOC_SECTION>
</INFO>
</data>
</root>
I am trying to read the values from the repeating node .
I am able to read the value of ASSOC_SECTION1 from the first repeating node, but while trying to read from the second node, I get a null pointer exception.
public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException, TransformerException {
// TODO Auto-generated method stub
File inputFile = new File(inputFile);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(inputFile);
document.getDocumentElement().normalize();
System.out.println("Root Element-->"+document.getDocumentElement().getNodeName());
NodeList nodeList = document.getElementsByTagName("ASSOC_SECTION");
System.out.println(nodeList.getLength());
for (int i = 0; i < nodeList.getLength(); i++) {
Node data = nodeList.item(i);
if(data.getNodeType() == Node.ELEMENT_NODE){
Element element = (Element) data;
System.out.println(element.getElementsByTagName("ASSOC_SECTION1").item(i).getTextContent());
}
}
Any idea as to why I am getting the null pointer issue here?

use xpath to extract value from xml file with multiple namespace in java

I am trying to extract node value with multiple namespaces in java but not succeed. The xml file is like:
<ns26:start xmlns:ns26="http://www.tektronix.com/iris/isa/capture/start"
xmlns:ns31="http://www.tektronix.com/iris/isa/filters"
xmlns:ns13="http://www.tektronix.com/iris/isa/monitoredObjects"
xmlns:ns6="http://www.tektronix.com/iris/isa"
xmlns:ns10="http://www.tektronix.com/iris/isa/monNodeObjects"
xmlns:ns7="http://www.tektronix.com/iris/isa/capture/monitoredElements"
xmlns:ns11="http://www.tektronix.com/iris/isa/pointcodes"
xmlns:ns8="http://www.tektronix.com/iris/isa/capture/captureSession"
xmlns:ns2="http://www.tektronix.com/iris/isa/sessionSaveInfo"
xmlns:ns4="http://www.tektronix.com/iris/isa/customData"
xmlns:ns3="http://www.tektronix.com/iris/isa/manifest">
<ns6:Id>LAB:11300/isaclient;440</ns6:Id>
</ns26:start>
I want to extract Id with xpath local-name(). Expression like //*[local-name()='start']/*[local-name()='Id'] but didn't get any matched node. Please help to find issue here. Thanks
Add the java code here:
public static List<String> getXPathValueNamespace(String xml, String expression throws ParserConfigurationException, SAXException, IOException, XPathExpressionException
{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
DocumentBuilder builder;
Document doc = null;
List<String> list = new ArrayList<String>();
builder = factory.newDocumentBuilder();
InputSource source = new InputSource(new StringReader(xml));
doc = builder.parse(source);
// Create XPathFactory object
XPathFactory xpathFactory = XPathFactory.newInstance();
// Create XPath object
XPath xpath = xpathFactory.newXPath();
XPathExpression expr = xpath.compile(expression);
NodeList nodes = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
for (int i = 0; i < nodes.getLength(); i++)
list.add(nodes.item(i).getNodeValue());
return list;
}

The expression //*[local-name()='start']/*[local-name()='Id'] works and for the example document one node should be contained in the result node list.
But you should use nodes.item(i).getTextContent() to retrieve the node content, since getNodeValue() returns null for element nodes.

How to get XML node names without namespace in java?

I have an xml file having data which looks like given below:
....
<ems:MessageInformation>
<ecs:MessageID>2147321820</ecs:MessageID>
<ecs:MessageTimeStamp>2016-01-01T04:38:33</ecs:MessageTimeStamp>
<ecs:SendingSystem>LD</ecs:SendingSystem>
<ecs:ReceivingSystem>CH</ecs:ReceivingSystem>
<ecs:ServicingFipsCountyCode>037</ecs:ServicingFipsCountyCode>
<ecs:Environment>UGS-D8UACS02</ecs:Environment>
</ems:MessageInformation>
....
There are many other nodes also. All nodes have namespace like ecs,tns,ems etc. I am suing following code part to extract all node names without namespace.
public static void main(String[] args) throws SAXException, IOException, ParserConfigurationException, TransformerException {
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document document = docBuilder.parse(new File("C:\\Users\\DadMadhR\\Desktop\\temp\\EDR_D3A0327.XML"));
NodeList nodeList = document.getElementsByTagName("*");
for (int i = 0; i < nodeList.getLength(); i++) {
Node node = nodeList.item(i);
//System.out.println(node.getNodeName());
System.out.println(node.getLocalName());
}
}
But when I execute this code, it's printing null for individual node. Can someone tell me what I am doing wrong here?
I read on internet and I came to know that node.getLocalName() will give node name without namespace. What is wrong then in my case?

You need to set the document builder factory to be namespace aware first. Then getLocalName() will start returning non-null values.
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
docBuilder.setNamespaceAware(true); // <=== here
Document document = docBuilder.parse(new File("C:\\Users\\DadMadhR\\Desktop\\temp\\EDR_D3A0327.XML"));

Invalid answer while printing child elements from an XML file in JAVA

Im trying to get the number of child elements of a parent element from a XML file using JAVA. Here is the code I'm working with:
File fXmlFile = new File("SearchPromotions.xml");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(fXmlFile);
NodeList l = doc.getElementsByTagName("TestCase");
Node parentNode = l.item(0);
int count = parentNode.getChildNodes().getLength();
System.out.println(count);
And here is the XML file:
<TestCase>
<SelectedDataTableNames name="SearchData"> </SelectedDataTableNames>
<Open page="hsbc" ms="5000" />
<Click object="hsbc.Personal_Link" />
<Click object="hsbc.CreditCard_tab" />
<Call businessComponent="Global.Verify_Search">
<Param name="HotelName_Param" value="#SearchData_link" />
</Call>
<CheckElementPresent object="hsbc.Img_Hotel_logo" Identifire="Hotel_Name_PARAM:#SearchData_ResultHotelName" fail="true" customErrorMessage="Searched hotel name is not present in the page." />
</TestCase>
The problem im facing is that it is printing a wrong value. The value printed is 13. But as you can see there are only 6 child elements for the parent element "TestCase". Where did i go wrong. Please help

public static void main(String[] args) throws Exception {
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
String fileContent = readFile("SearchPromotions.xml");// Read trimmed file
InputStream in = new ByteArrayInputStream(fileContent.getBytes("UTF-8"));// Create stream to pass it to parser()
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(in);
NodeList l = doc.getElementsByTagName("TestCase");
Node parentNode = l.item(0);
int count = parentNode.getChildNodes().getLength();
System.out.println(count);
}
private static String readFile(String pathname) throws IOException {
File file = new File(pathname);
StringBuilder fileContents = new StringBuilder((int) file.length());
Scanner scanner = new Scanner(file);
try {
while (scanner.hasNextLine()) {
fileContents.append(scanner.nextLine().trim()); // Trim the whitespace. This resuls in TEXT_NODE.
}
return fileContents.toString();
} finally {
scanner.close();
}
}
There are some white space charcters in your XML which will result in extra nodes. Try the above solution hope it helps.

The children of a node include whitespace text nodes as well as child element nodes.
Why not just do this with XPath - it's so much less hassle!
With Saxon and XPath 2.0 it would be
Processor p = new Processor(false);
XdmNode doc = p.newDocumentBuilder().build(
new StreamSource(new File("searchPromotions.xml")));
XdmItem result = p.newXPathCompiler().evaluateSingle("/TestCase/count(*)", doc);
System.out.println(result.getStringValue());

Found the answer for the question. It works. The problem i had was ELEMENT_NODE. We have to filter ELEMENT_NODE. Here is the working code. Thanks for all those who helped be over there.
File fXmlFile = new File("SearchPromotions.xml");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(fXmlFile);
doc.getDocumentElement().normalize();
Element docEle = doc.getDocumentElement();
NodeList nl = docEle.getChildNodes();
if (nl != null && nl.getLength() > 0) {
for (int i = 0; i < nl.getLength(); i++) {
if (nl.item(i).getNodeType() == Node.ELEMENT_NODE) {
Element el = (Element) nl.item(i);
System.out.println(el);
}
}
}