Ytukyg

I'm trying to create a Spring REST WebService which will return a complex object to the caller. In particular this caller is going to be asking for the object using application/XML.

Without any particular configuration about the marshaller, the object is serialized correctly to XML to the caller, BUT it does not contain XML namespace information, so the object deserialization fails on the caller side (I cannot change the caller's code, and don't want to either).

This is the XML the client is receiving:

<SearchPoliciesResponse>

   <searchPoliciesResult>

      <searchHeader>

         ... snip

This is what they should be receiving:

<?xml version="1.0" encoding="ISO-8859-1" standalone="yes"?>

<SearchPoliciesResponse xmlns="http://com.cgic.app.service.policy/PolicySearch">

    <searchPoliciesResult>

        <SearchHeader>

            ... snip

This is what my REST controller method looks like:

@PostMapping()

public SearchPoliciesResponse searchRequest(@Valid @RequestBody SearchPoliciesRequest request)

        throws Exception {



    var allPoliciesFile = ResourceUtils.getFile("classpath:policies/search/policy-summary.xml");

    var jaxbContext = JAXBContext.newInstance(SearchPoliciesResponse.class);

    var jaxbUnmarshaller = jaxbContext.createUnmarshaller();

    var response = (SearchPoliciesResponse) jaxbUnmarshaller.unmarshal(allPoliciesFile);



    // ... HERE I WILL MAKE SOME MANUAL CHANGES TO THE RESPONSE OBJECT



    return response;

}

I tried adding the following Bean to my configuration class (SpringBootApplication annotated class), but to no effect:

@Bean

public Jaxb2Marshaller marshaller() {

    var marshaller = new Jaxb2Marshaller();

    marshaller.setClassesToBeBound(SearchPoliciesResponse.class, SearchPoliciesRequest.class);



    return marshaller;

}

I know that the classes I use for (de)serialization are correctly annotated, because (a) they were autogenerated by JAXB (xjc tool), and (b) if I manually create a JAXBContext and marshall to XML, it's serialized correctly with the namespace I'm expecting.

The policy classes package contains a package-info.java file with the correct QUALIFIED annotation on the package, so it should be working, and it is when done manually, for Spring.

To test if the Spring marshaller bean I declared would work, I tested injecting it:

@Autowired

private Jaxb2Marshaller marshaller;

And then tried marshalling manually

var writer = new StringWriter();

var result = new StringResult();

marshaller.marshal(response, result);

And it DID work fine. So it appears to be whatever happens between the REST controller return, and when Spring marshals the object, it's not using the Bean I declared.

I'm using:

springBootVersion = '2.0.4.RELEASE'
org.springframework.ws:spring-ws-core:3.0.4.RELEASE

I appreciate any hints.

Thank you