How to return custom Error Response when item not found

Question

Trying to send custom error message when item not found. ifNotNull case correct generate required response. But ifNull not generate required response (Always the response is empty with status code 200)

AuthorService.java

public Uni<Author> findByName(String name) {
    return authorRepo.findByName(name);
}

Resource.java

@GET
@Path("/{name}")
public Uni<Response> get(@PathParam("name") String name) {
    return authorService.findByName(name)
            .onItem().ifNotNull().transform(t -> new ResponseBodyDTO("success", true, t))
            .onItem().transform(t -> Response.ok(t).build())
            .onItem().ifNull().switchTo(() -> Uni.createFrom().item(new ResponseBodyDTO("fail", false, null))
                    .onItem().transform(t -> Response.status(Response.Status.NOT_FOUND).entity(t).build()));
}

geoand · Accepted Answer · 2021-04-09T06:06:53.007

1

Use the following

@GET
@Path("/{name}")
public Uni<Response> get(@PathParam("name") String name) {
    return authorService.findByName(name)
            .onItem().ifNotNull().transform(t -> Response.ok(new ResponseBodyDTO("success", true, t)).build())
            .onItem().ifNull().continueWith(Response.status(Response.Status.NOT_FOUND).entity(new ResponseBodyDTO("fail", false, null)).build())
}

edited Apr 09 '21 at 06:06

answered Apr 08 '21 at 15:19

geoand

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Is it possible to send Uni with a http code as 400? – codeforHarman Jun 28 '22 at 11:54
1

Yes, you need to `Response.status(400).entity(...).build()` instea of the `Response.ok(...)` code in the answers. – geoand Jun 28 '22 at 14:27

How to return custom Error Response when item not found

1 Answers1