Need help on how to add an xml node at a desired position in the xml.
<Errors xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="errors.xsd">
<Service Name="SYSTEM" Range="0-0299">
<Type Name="System">
<Error Name="ERROR1">
<Code>0001</Code>
<Description>error1</Description>
</Error>
<Error Name="ERROR_OTHER">
<Code>0</Code>
<Description>error error</Description>
</Error>
<Error Name="ERROR2">
<Code>0002</Code>
<Description>error2</Description>
</Error>
</Type>
<Type Name="Security">
<Error Name="ERROR3">
<Code>0300</Code>
<Description>error3</Description>
</Error>
<Error Name="ERROR4">
<Code>0301</Code>
<Description>error4</Description>
</Error>
</Type>
</Service>
<Service Name="WEBSVC" Range="1000-1199">
<Type Name="Data">
<Error Name="ERROR10">
<Code>1000</Code>
<Description>error10</Description>
</Error>
<Error Name="ERROR5">
<Code>1001</Code>
<Description>error5</Description>
</Error>
<Error Name="ERROR6">
<Code>1004</Code>
<Description>desc</Description>
</Error>
</Type>
<Type Name="System">
<Error Name="ERROR7">
<Code>1200</Code>
<Description>xyz123</Description>
</Error>
<Error Name="ERROR8">
<Code>1201</Code>
<Description>abcd</Description>
</Error>
</Type>
<Type Name="Business">
<Error Name="ERROR9">
<Code>1400</Code>
<Description>rrreerer</Description>
</Error>
<Error Name="ERROR10">
<Code>1401</Code>
<Description>err</Description>
</Error>
</Type>
</Service>
</Errors>
My requirement is to add:
<Error Name="ERROR_NEW">
<Code>03019</Code>
<Description>This is a new error</Description>
</Error>
At location for example Errors/Service Name="WEBSVC"/Type Name="System". This may vary as per the requirement.
<Errors xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="errors.xsd">
<Service Name="SYSTEM" Range="0-0299">
<Type Name="System">
<Error Name="ERROR1">
<Code>0001</Code>
<Description>error1</Description>
</Error>
<Error Name="ERROR_OTHER">
<Code>0</Code>
<Description>error error</Description>
</Error>
<Error Name="ERROR2">
<Code>0002</Code>
<Description>error2</Description>
</Error>
</Type>
<Type Name="Security">
<Error Name="ERROR3">
<Code>0300</Code>
<Description>error3</Description>
</Error>
<Error Name="ERROR4">
<Code>0301</Code>
<Description>error4</Description>
</Error>
</Type>
</Service>
<Service Name="WEBSVC" Range="1000-1199">
<Type Name="Data">
<Error Name="ERROR10">
<Code>1000</Code>
<Description>error10</Description>
</Error>
<Error Name="ERROR5">
<Code>1001</Code>
<Description>error5</Description>
</Error>
<Error Name="ERROR6">
<Code>1004</Code>
<Description>desc</Description>
</Error>
</Type>
<Type Name="System">
<Error Name="ERROR7">
<Code>1200</Code>
<Description>xyz123</Description>
</Error>
<Error Name="ERROR8">
<Code>1201</Code>
<Description>abcd</Description>
</Error>
**<Error Name="ERROR_NEW">
<Code>03019</Code>
<Description>This is a new error</Description>
</Error>**
</Type>
<Type Name="Business">
<Error Name="ERROR9">
<Code>1400</Code>
<Description>rrreerer</Description>
</Error>
<Error Name="ERROR10">
<Code>1401</Code>
<Description>err</Description>
</Error>
</Type>
</Service>
</Errors>
I am using SAX parser and I am able the parse the document successfully.
package com.browser.main.Handler;
import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import com.browser.main.model.*;
public class ErrorHandler extends DefaultHandler {
private List<ErrorService> errorServiceList = null;
private ErrorService errorService = null;
private List<ErrorType> errorTypeList = null;
private ErrorType errorType = null;
private List<ErrorDetails> errorDetailList = null;
private ErrorDetails errorDetails = null;
public List<ErrorService> getErrorServiceList() {
return errorServiceList;
}
boolean bService = false;
boolean bType = false;
boolean bError = false;
boolean bCode = false;
boolean bDesc = false;
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes)
throws SAXException {
if (qName.equalsIgnoreCase("Service")) {
errorService = new ErrorService();
errorService.setServiceName(attributes.getValue("Name"));
if(errorServiceList == null){
errorServiceList = new ArrayList<ErrorService>();
}
} else if (qName.equalsIgnoreCase("Type")){
errorType = new ErrorType();
errorType.setErrorTypeName(attributes.getValue("Name"));
if(errorTypeList == null){
errorTypeList = new ArrayList<ErrorType>();
}
} else if (qName.equalsIgnoreCase("Error")){
errorDetails = new ErrorDetails();
errorDetails.setErrorName(attributes.getValue("Name"));
if(errorDetailList == null){
errorDetailList = new ArrayList<ErrorDetails>();
}
} else if (qName.equalsIgnoreCase("Code")){
bCode = true;
} else if (qName.equalsIgnoreCase("Description")){
bDesc = true;
}
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
if (qName.equalsIgnoreCase("Error")) {
errorDetailList.add(errorDetails);
} else if (qName.equalsIgnoreCase("Type")){
errorType.setErrorsDetailList(errorDetailList);
errorDetailList = null;
errorTypeList.add(errorType);
} else if (qName.equalsIgnoreCase("Service")){
errorService.setErrorTypeList(errorTypeList);
errorTypeList = null;
errorServiceList.add(errorService);
}
}
@Override
public void characters(char ch[], int start, int length) throws SAXException {
if (bCode) {
errorDetails.setErrorCode(new String(ch, start, length));
bCode = false;
} else if (bDesc) {
errorDetails.setErrorDesc(new String(ch, start, length));
bDesc = false;
}
}
}
package com.browser.main;
import java.io.File;
import java.io.IOException;
import java.util.List;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.SAXException;
import com.browser.main.Handler.ErrorHandler;
import com.browser.main.model.*;
public class BrowserMain {
/**
* @param args
*/
public static void main(String[] args) {
SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
try {
SAXParser saxParser = saxParserFactory.newSAXParser();
ErrorHandler handler = new ErrorHandler();
saxParser.parse(new File("/uapi-error-en.xml"), handler);
List<ErrorService> errorServiceList = handler.getErrorServiceList();
System.out.println(errorServiceList.size());
} catch (ParserConfigurationException | SAXException | IOException e) {
e.printStackTrace();
}
}
}
Please suggest me how reach to the desired position and add the node there. Thanks in advance.
Got the answer. Used DOM parser.
public class XmlAppend {
public static void main(String[] args) {
try {
File xmlFile = new File("G:/workspace/UAPIErrorBrowser/uapi-error-en.xml");
//Create the documentBuilderFactory
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
//Create the documentBuilder
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
//Create the Document by parsing the file
Document document = documentBuilder.parse(xmlFile);
//Get the root element of the xml Document;
Element documentElement = document.getDocumentElement();
System.out.println("documentElement:" + documentElement.toString());
boolean isElement = false;
while(!isElement){
NodeList allTypes = documentElement.getElementsByTagName("Type");//("Errors");
for(int i = 0; i < allTypes.getLength(); i++){
Node type = allTypes.item(i);
if(type.getAttributes().getNamedItem("Name").getTextContent().equalsIgnoreCase("System") && type.getParentNode().getAttributes().getNamedItem("Name").getTextContent().equalsIgnoreCase("WEBSVC")){
Element codeElement = document.createElement("Code");
codeElement.setTextContent("3200");
Element descElement = document.createElement("Description");
descElement.setTextContent("this is awesome");
Element errorNode = document.createElement("Error");
errorNode.setAttribute("Name", "THIS_IS_GREAT");
errorNode.appendChild(codeElement);
errorNode.appendChild(descElement);
type.appendChild(errorNode);
isElement = true;
break;
}
}
//if(documentElement.getChildNodes())
}
Transformer tFormer = TransformerFactory.newInstance().newTransformer();
// Set output file to xml
tFormer.setOutputProperty(OutputKeys.METHOD, "xml");
// Write the document back to the file
Source source = new DOMSource(document);
Result result = new StreamResult(xmlFile);
tFormer.transform(source, result);
} catch (TransformerException ex) {
Logger.getLogger(XmlAppend.class.getName()).log(Level.SEVERE, null, ex);
} catch (SAXException ex) {
Logger.getLogger(XmlAppend.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(XmlAppend.class.getName()).log(Level.SEVERE, null, ex);
} catch (ParserConfigurationException ex) {
Logger.getLogger(XmlAppend.class.getName()).log(Level.SEVERE, null, ex);
}
}
}