How to rename root key in JSON serialization with Jackson

Question

I am using Jackson for JSON serialization of a list of objects.

Here is what I get:

{\"ArrayList\":[{\"id\":1,\"name\":\"test name\"}]}

Answer 1

@JsonTypeName("usuarios")
@JsonTypeInfo(include= JsonTypeInfo.As.WRAPPER_OBJECT,use= JsonTypeInfo.Id.NAME)
public class UsuarioDT extends ArrayList {

    @JsonProperty("rowsAffected")
    private Integer afectados;

    public Integer getAfectados() {
        return afectados;
    }

    public void setAfectados(Integer afectados) {
        this.afectados = afectados;
    }
}