XML response and Resource<T> wrapper

[marlandy]

Hi all!!,

I´ve working with spring-hateoas and I have a Controller that returns both JSON and XML responses according to the response format requested.

When I return an entity object wrapped into a Resource in XML format, I can´t see my entity content in the response. However, when my entity extends ResourceSupport and is not wrapped into Resource, there´s no problem. When JSON response it works fine in every way.

For example:

When I return:

// stadium extends ResourceSupport and is annotated by @XmlRootElement
return new ResponseEntity<>(stadium, HttpStatus.CREATED);

That´s the response:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<stadium>
    <atom:link rel="self" href="http://localhost:8080/soccer/api/stadiums/1003" />
    <name>Mestalla</name>
</stadium>

But the problem occurs when return:

// stadium does not extends ResourceSupport but has @XmlRootElement
Resource<Stadium> resource = new Resource<>(new Stadium("Mestalla"));
resource.add(/* whatever link*/);
return new ResponseEntity<>(resource, HttpStatus.CREATED);

That´s the response (No name tag. Root element is resource instead of stadium):

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<resource>    
    <atom:link rel="self" href="http://localhost:8080/soccer/api/stadiums/1003" />
</resource>

What I´m doing wrong?

Thanks and regards.

[odrotbohm]

Resource missed an @XmlAnyElement annotation on the content attribute which cause no content rendered in XML at all. I've fixed this alongside the changes for #124. Would you mind checking the 0.9.0 snapshots?

[mherb63]

I'm using version 0.9.0 and see the same issue, is there any work-around?:

            <b>exception</b>
            <pre>org.springframework.http.converter.HttpMessageNotWritableException: Could not marshal [Resource { content: com.xxx.cesdrest.domain.dto.ManagedElement@20f34cdb, links: [&lt;http://localhost:8080/cesdrest/mes/80&gt;;rel=&quot;self&quot;] }]: null; nested exception is javax.xml.bind.MarshalException


    <dependency>
        <groupId>org.springframework.hateoas</groupId>
        <artifactId>spring-hateoas</artifactId>
        <version>0.9.0.RELEASE</version>
    </dependency>

    <repository>
        <id>spring-milestone</id>
        <url>http://repo.spring.io/libs-snapshot</url>
    </repository>

Also, JSON works fine...here's the json format for the same request:

{
"id": null,
"name": null,
"ipAddress": null,
"macAddress": null,
"syncCommState": null,
"version": null,
"role": null,
"managedState": null,
"emsInSyncState": null,
"type": null,
"nativeLocation": null,
"additionalAttributes": {},
"alarmCounts": {},
"links": [
{
"rel": "self",
"href": "http://localhost:8080/cesdrest/mes/80"
}
]
}

Thanks,

Mike

[gregturn]

As of #695, Spring HATEOAS no longer supports XML.