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Links are wrongly serialized when MappingJacksonValue is used as a return type [DATAREST-1179] #1544
Description
Sam Kruglov opened DATAREST-1179 and commented
Method in @RepositoryRestController:
@GetMapping(value = "users/{id}", params = "fields")
public ResponseEntity<MappingJacksonValue> getUser(@PathVariable("id") Long id,
@RequestParam(value = "fields") String fields,
HttpServletRequest request) {
Resource<User> userResource = new Resource<>(userRepository.findOne(id));
userResource.add(new Link(request.getRequestURL() + "?fields=" + fields).withSelfRel());
userResource.add(links.linkToSingleResource(userResource.getContent()).withRel("user"));
userResource.add(links.linkToSingleResource(userResource.getContent().getGroup()).withRel("group"));
MappingJacksonValue wrapper = new MappingJacksonValue(userResource);
wrapper.setFilters(new SimpleFilterProvider()
.addFilter("userFilter",
SimpleBeanPropertyFilter.filterOutAllExcept(fields.split(","))));
return ResponseEntity.ok(wrapper);
}Accessing GET users/1?fields=firstName
{
"firstName": "John",
"links": [
{
"rel": "self",
"href": "http://localhost:8080/users/1?fields=firstName"
},
{
"rel": "user",
"href": "http://localhost:8080/users/1{?projection}"
},
{
"rel": "group",
"href": "http://localhost:8080/groups/1"
}
]
}
Expected _links instead of *links * and href to be inside rel
Affects: 2.6.9 (Ingalls SR9)
Activity
spring-projects-issues commentedon Jan 13, 2018
Sam Kruglov commented
I have just read this comment and rethought my view on Spring Data REST in general. This particular example is not RESTful but I still think that this JIRA is only about MappingJacksonValue (although I do not know any other use case other than with that
@JsonFilter, so if there is none then the issue may be closed)ruthst00 commentedon Sep 13, 2026
@odrotbohm, submitted this PR to fix the issue.
Handle MappingJacksonValue return types via ResponseBodyAdvice