How to include in serialization the id of the recovered objects through the `findAll()` method of CrudRepository in Spring?

Question

I have the following entity class:

@Entity
public class GameSet {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;

    private String question;
    .......
}

Here is my Repository:

@Repository
public interface GameSetRepository extends CrudRepository<GameSet, Long> { }

Here is the relevant part of my Controller:

...
    @RequestMapping(value = "/test/getgamesets", method = RequestMethod.GET)
    public @ResponseBody Collection<GameSet> getGameSets() {
        return Lists.newArrayList(gamesets.findAll());
    }
...

And here is the server response:

{
    "question": "Choose one of the following, which is wrong.",
    "title1": "MovieA",
    "title2": "MovieB",
    "title3": "MovieC",
    "title4": "MovieD",
    "wrong": 1,
    "explain": "I don't know why this is wrong.",
    "rates": 0,
    "rate": 0
}

I would like to get the id of the object in the request result, in addition to the other properties.

Should I override the findAll() method?

Thanks for the attention and time!

It all depends on how you transform the entities to JSON, and also probably on the code of the entity. It has nothing to do with the CrudRepository. — JB Nizet, Nov 08 '14 at 16:15
Thanks for your answer! Do you mean like this [link](http://stackoverflow.com/questions/24936636/while-using-spring-data-rest-after-migrating-an-app-to-spring-boot-i-have-obser)? — KostasC, Nov 08 '14 at 16:23
Maybe, maybe not. I don't know if you're using Spring-data-rest and if this answer applies to your application. — JB Nizet, Nov 08 '14 at 16:27

score 4 · Accepted Answer · edited Dec 04 '14 at 17:26

4

I just add the following code on my Application class from the previous link:

@Configuration
public static class RepositoryConfig extends RepositoryRestMvcConfiguration {
    @Override
    protected void configureRepositoryRestConfiguration(RepositoryRestConfiguration config) {
        config.exposeIdsFor(GameSet.class);
    }
}

And it works!!! Thanks JB Nizet to make me see clear what was my problem!

edited Dec 04 '14 at 17:26

bluish

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answered Nov 08 '14 at 16:34

KostasC

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Take a look at [this](https://stackoverflow.com/a/49344988/4071001) in case you need to expose the identifiers for all entities, or only for those that extends or implements specific super class or interface. – lcnicolau Jul 05 '18 at 20:23

How to include in serialization the id of the recovered objects through the `findAll()` method of CrudRepository in Spring?

1 Answers1