Jarno Walgemoed opened SPR-15697 and commented

Hi,

Jackson-xml marshalling seems to be broken in the 2.0.0 M2 milestone release for Spring boot which contains Spring 5.0 RC2 (with web-flux). I tried both with functional web routers and a 'classic' (simple) annotation based controller (in Kotlin):

data class Hello(val one: String, val two: String)

@Bean
fun apiRouter() = router {
    GET("/hello") { req ->
        ok().contentType(MediaType.APPLICATION_XML)
                .body(BodyInserters.fromObject(Hello("Hello", "World")))
    }
}

And

data class Hello(val one: String, val two: String)

@RestController
class HelloController {
    @GetMapping("/hello") fun sayHello() = Hello("Hello", "World")
}

The jackson XML marshaller doesn't seem to be registered automatically anymore.

Steps to reproduce

• Create a Spring Boot project (start.spring.io) -> 2.0.0 M2 with the reactive web dependency;
• Add a restcontroller that returns a simple entity (see above);
• Add jackson-dataformat-xml dependency.

Call the endpoint with the application/xml accept header. The sever will respond with a 406 - not acceptable response. In the logging this shows up:

2017-06-23 12:39:42.629 ERROR 26064 --- [ctor-http-nio-2] o.s.w.s.h.ResponseStatusExceptionHandler : Response status 406 with reason "Could not find acceptable representation"

Verification

I've tried a similar approach with the latest stable Spring version and there it works as expected, depending on the provided accept header (application/xml or application/json) the application responds with the response in the requested format.

Affects: 5.0 RC2

3 votes, 6 watchers