Transforming XML with XSLT in Spring Boot - Namespace Issues in Output
I'm following best practices but After trying multiple solutions online, I still can't figure this out... I'm working on a Spring Boot application where I need to transform an XML document using XSLT. The XML input includes multiple namespaces, and while the transformation works as expected for most elements, I am having issues with some of the output elements being incorrectly namespaced. Here's a simplified version of my input XML: ```xml <root xmlns:ns="http://example.com/ns"> <ns:item> <ns:name>Item 1</ns:name> </ns:item> </root> ``` For the transformation, I am using the following XSLT: ```xml <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:ns="http://example.com/ns"> <xsl:template match="/"> <output> <xsl:copy-of select="ns:item"/> </output> </xsl:template> </xsl:stylesheet> ``` In my Spring Boot service, I'm using the following code to perform the transformation: ```java import org.springframework.core.io.ClassPathResource; import org.springframework.core.io.Resource; import org.springframework.stereotype.Service; import javax.xml.transform.*; import javax.xml.transform.stream.StreamResult; import javax.xml.transform.stream.StreamSource; import java.io.StringWriter; @Service public class XmlTransformationService { public String transformXml(String xmlInput) throws TransformerException { Resource xsltResource = new ClassPathResource("transform.xslt"); TransformerFactory factory = TransformerFactory.newInstance(); Source xslt = new StreamSource(xsltResource.getInputStream()); Transformer transformer = factory.newTransformer(xslt); StringWriter writer = new StringWriter(); transformer.transform(new StreamSource(new StringReader(xmlInput)), new StreamResult(writer)); return writer.toString(); } } ``` The transformed output I am getting looks like this: ```xml <output> <item xmlns="http://example.com/ns"> <name>Item 1</name> </item> </output> ``` As you can see, the `item` element has the namespace `http://example.com/ns`, which I expected, but the `name` element inside `item` does not have this namespace. I've tried adding `xsl:copy` instead of `xsl:copy-of`, but I still get the same result. Is there a way to ensure that all elements retain the correct namespace in the output? I have also looked into using `xsl:element` to specify the namespace explicitly, but that seems cumbersome. Any best practices or suggestions on how to handle namespaces more effectively with XSLT in Spring Boot would be greatly appreciated! Thanks in advance! I've been using Java for about a year now. How would you solve this?