Exceptions with Spring Data Rest

Question

I'm starting on the concepts of microservices with Springboot and Spring Data Rest for me is very confusing how can I do with a few lines of code.
My main question is: I just have entities and repositories, the Spring Data Rest "generates" paths for all the POST requests, GET etc. and my repository performs correctly.
But how do exception handling?
For example, I send a POST without the "name" field and this is accepted but I want to return an error. How do I do that?

Entity

@Document
public class Veiculo{

    @Id
    private String id;

    @Indexed(unique = true)
    private String nome;
    private String tipo;
    @DBRef
    List<Contato> contatos;

    @DBRef
    List<Cliente> clientes;


    public String getId() {
        return this.id;
    }

    public Veiculo setId(String id) {
        this.id = id;
        return this;
    }

    public String getNome() {
        return this.nome;
    }

    public Veiculo setNome(String nome) {
        this.nome = nome;
        return this;
    }

    public String getTipo() {
        return this.tipo;
    }

    public Veiculo setTipo(String tipo) {
        this.tipo = tipo;
        return this;
    }

    public List<Contato> getContatos() {
        return this.contatos;
    }

    public Veiculo setContatos(List<Contato> contatos) {
        this.contatos = contatos;
        return this;
    }

    public List<Cliente> getClientes() {
        return this.clientes;
    }

    public Veiculo setClientes(List<Cliente> clientes) {
        this.clientes = clientes;
        return this;
    }
}

Repository

@RepositoryRestResource(collectionResourceRel = "veiculos", path = "veiculos")
public interface VeiculoRepository extends MongoRepository<Veiculo, String> {
    Veiculo save(Veiculo veiculo);

    List<Veiculo> findAll();

}

This question talks about validating requests with Spring Data Rest. Is it something you are looking for? — oiavorskyi
– oiavorskyi, Commented Jul 8, 2015 at 13:16

gregturn · Accepted Answer · 2015-07-08 21:23:41Z

2

Why don't you just apply javax.validation.constraints.NotNull to the name parameter? Spring Data REST will apply the validation check and fail if the value is missing.

answered Jul 8, 2015 at 21:23

gregturn

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