👀 Views: 337 💬 Answers: 1 📅 Created: 2025-06-11

xml jaxb xsd validation Java

I'm trying to implement I recently switched to Hey everyone, I'm running into an issue that's driving me crazy..... I'm working on a Java application that uses JAXB to marshal and unmarshal XML data against a defined XML Schema (XSD). I'm working with a peculiar scenario where validation fails for some elements in my XML file, even though they appear to conform to the schema. The specific behavior I'm working with is: ``` org.xml.sax.SAXParseException: cvc-complex-type.2.4.a: Invalid content was found starting with element 'MyElement'. One of '{OtherElement}' is expected. ``` This behavior occurs when I try to unmarshal the following XML snippet: ```xml <MyRoot> <OtherElement>Value</OtherElement> <MyElement>Some value</MyElement> </MyRoot> ``` The relevant parts of my XSD are: ```xml <xs:element name="MyRoot"> <xs:complexType> <xs:sequence> <xs:element name="OtherElement" type="xs:string"/> <xs:element name="MyElement" type="xs:string"/> </xs:sequence> </xs:complexType> </xs:element> ``` I have verified that the XML structure matches the sequence defined in the XSD, so I'm unsure why the validator thinks `MyElement` is out of order. I've also tried to validate the XML against the XSD using an external tool, and it passes without issues. Could this be related to the way I have set up JAXB or to the JAXB annotations within my Java classes? I've tried regenerating the classes using xjc multiple times and clearing out any cached files, but the question continues. I'm using JAXB 2.3.1 and Java 8. Any insights would be greatly appreciated! Is there a better approach? Any suggestions would be helpful. Any examples would be super helpful.