logic changes when updating xml if existing.

WebGde/src/main/java/com/svi/webgde/restservice/services/GDEWebServices.java

@@ -189,7 +189,8 @@ public class GDEWebServices {
 			if (!file.exists()) {
 				response = XMLUtil.generateXML(xml);
 			} else {
-				response = XMLUtil.udpateXML(xml);
+//				response = XMLUtil.udpateXML(xml);
+				response = XMLUtil.generateXML(xml);
 			}
 		} catch (Exception e) {
 			return Response.status(500).entity("Fail").build();

WebGde/src/main/java/com/svi/webgde/restservice/utils/XMLUtil.java

 package com.svi.webgde.restservice.utils;
 
+import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.io.StringReader;
 import java.nio.file.Files;
 import java.nio.file.Paths;
@@ -108,8 +110,17 @@ public class XMLUtil {
 		transformer.setOutputProperty(OutputKeys.STANDALONE, "no");
 		transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
 
-		Result result = new StreamResult(xml.getOutputDir());
+		try (OutputStream outputStream = new FileOutputStream(xml.getOutputDir())) {
+		    // Set the output stream for the StreamResult
+		    Result result = new StreamResult(outputStream);
+		    
+		    // Perform the transformation
 		    transformer.transform(source, result);
+		} catch (IOException e) {
+		    // Handle IOException
+		    e.printStackTrace();
+		}
+
 
 		return new String(Files.readAllBytes(Paths.get(xml.getOutputDir())));
 	}
@@ -158,23 +169,36 @@ public class XMLUtil {
 			Node imagename = document.getElementsByTagName("imagename").item(imagenames.get(xml.getImageName()));
 			Node xmlSubRecord = imagename.getParentNode().getLastChild().getPreviousSibling();
 
-//			xml.getFields().forEach((key, value) -> {
 			for (Map.Entry<String, String> entry : xml.getFields().entrySet()) {
-				for (int i = 0; i < xmlSubRecord.getChildNodes().getLength(); i++) {
 		        String key = entry.getKey();
 		        String value = entry.getValue();
 
-					if (xmlSubRecord.getChildNodes().item(i).getNodeType() == Node.ELEMENT_NODE) {
-						if (xmlSubRecord.getChildNodes().item(i).getAttributes().getNamedItem("no").getNodeValue()
-								.equals(key)) {
-							for (int j = 0; j < xmlSubRecord.getChildNodes().item(i).getChildNodes().getLength(); j++) {
-								if (xmlSubRecord.getChildNodes().item(i).getChildNodes().item(j)
-										.getNodeType() == Node.ELEMENT_NODE) {
-									xmlSubRecord.getChildNodes().item(i).getChildNodes().item(j).setTextContent(value);
-								}
-							}
+		        boolean fieldExists = false;
+
+		        // Use XPath to find the field with the same "no" attribute
+		        XPath xPath = XPathFactory.newInstance().newXPath();
+		        String expression = String.format(".//field[@no='%s']", key);
+		        try {
+		            Node existingField = (Node) xPath.compile(expression).evaluate(xmlSubRecord, XPathConstants.NODE);
+
+		            if (existingField != null) {
+		                // Update the value of the existing field
+		                existingField.getFirstChild().setTextContent(value);
+		                fieldExists = true;
 		            }
+		        } catch (XPathExpressionException e) {
+		            e.printStackTrace(); // Handle the exception appropriately in your production code
 		        }
+
+		        // If the field does not exist, create and append a new one
+		        if (!fieldExists) {
+		            Element xmlField = document.createElement("field");
+		            Element valueField = document.createElement("value");
+		            valueField.appendChild(document.createTextNode(value));
+
+		            xmlField.setAttribute("no", key);
+		            xmlField.appendChild(valueField);
+		            xmlSubRecord.appendChild(xmlField);
 		        }
 		    }
 //			});