how to get absoluteURIbuilder to return newly created resource in loaction header in JAX-RS?

Question

Consider the following example:

create new user

POST request for this url : www.example.com/accounts/checking/users

GET user detail

GET request for this url : www.example.com/accounts/checking/user/1

return resource for user with id 1.

Now my question is when I post to www.example.com/accounts/checking/users for a new user creation, a new user is created and its resource uri must be returned in the location header. I am having trouble building this uri using getAbsoluteURIbuilder method.

Here is what I have

@Path("/accounts)
public class AccountResourceService {

@Context
UriInfo uriInfo

//here 'type' can be checking or saving account

@GET
@PATH("{type}/user/{id}")
@Produces(MediaType.APPLICATION_JSON)
public class getUserInfo(final @PathParam("type") String type, @PathParam("id"), int id)
{
    //return user-specific resource for the given id
}


@POST
@PATH("{type}/users")
@Produces(MediaType.APPLICATION_JSON)
public class CreateUser(final @PathParam("type") String type, AccountCreateRequest request)
{
   if type.equals("checking"){
      User user = createAccount(request);
      URI uri = uriInfo.getAbsolutePathBuilder().path(user.getId().toString()).build();
      System.out.println("created uri is " + uri.toString);
      return Response.created(uri).build(); 
    }
    else {
       //do something else
        }

}

}

The uri I am returning in POST method above is

http://localhost:8080/accounts/checking/users/1 //note users

But the expected uri is

http://localhost:8080/accounts/checking/user/1 //not user

how can I get this to work?

From a design perspective, I say you just get rid of the `user` resource path, and make it `users/{id}`. This is common and an accepted way. `users` is a collection resource. When you go to `/users`, you get the collection of users. When you go to `users/234`, you get the user with id `234`, in that collection of users. — Paul Samsotha, Dec 18 '14 at 01:18
@peeskillet: I totally understand but it is legacy code and there is nothing much I can do — brain storm, Dec 18 '14 at 01:22
There's not really much you can do but do something ugly that involves removing the `s` yourself then append the id — Paul Samsotha, Dec 18 '14 at 01:24
constructing from baseURI may be an option, but I am wondering how to do it — brain storm, Dec 18 '14 at 01:25
Just use `getAbsolutPath()` (no `Builder`). That should return a `URI`. `toString()` it and remove the `s`. Append the id, then `URI.create(newUriString)` — Paul Samsotha, Dec 18 '14 at 01:28
Or a _somewhat_ cleaner way is to `UriBuilder builder = UriBuilder.fromUri(removedSUri)`. Then you can `path` the `id`. This way you don't have to worry about the `/` — Paul Samsotha, Dec 18 '14 at 01:40

score 0 · Accepted Answer · answered Dec 18 '14 at 02:10

Just to put all the comments into an answer

From a design perspective, I say you just get rid of the user resource path, and make it users/{id}. This is common and an accepted way. users is a collection resource. When you go to /users, you get the collection of users. When you go to users/234, you get the user with id 234, in that collection of users.

But sine you can change this, you can just build the uri with some string manipulation. Get the getAbsolutePath() from the UriInfo, then just remove the s. Then you can create a new UriBuilder with that string. As seen in the below example

@Path("/accounts")
public class AccountsResource {

    @POST
    @Path("/{type}/users")
    @Consumes(MediaType.APPLICATION_JSON)
    public Response createUser(@PathParam("type") String type,
                               @Context UriInfo uriInfo) {

        String newUri = uriInfo.getAbsolutePath().toString();
        newUri = newUri.substring(0, newUri.length() - 1);
        UriBuilder builder = UriBuilder.fromPath(newUri);
        URI uri = builder.path("1234").build();

        return Response.created(uri).build();
    }
}

This will return /accounts/checking/user/1234

how to get absoluteURIbuilder to return newly created resource in loaction header in JAX-RS?

1 Answers1