排除Jersey2响应中的字段

Question

我正在开发Jersey2 RESTful服务

Jersey2 v2.22.2 + Spring3 v3.2.16 + Jax-rs v2.0.1

@Path("/v1/games")
public class GameServiceV1 implements IGameServiceV1 {

    @Autowired
    GameDAO gameDao;

    @Autowired
    CompanyDAO companyDao;

    @Autowired
    DMapper mapper;

    @Override
    @GET
    @Produces({ MediaType.APPLICATION_JSON })
    public List<GameDTO> getGamesByCity(@QueryParam("city") String cityID, @QueryParam("template") String template)
            throws EscapeitorException {

        List<Company> companies = companyDao.getCompaniesByCityId(cityID);
        List<GameDTO> games = putCompaniesWithinGames(companies);
        return games;
    }

如果我收到@QueryParam template =“summary”，我需要排除一些GameDTO响应字段。

例如：

GET / rest / v1 / games？city = 1必须返回：

[  
  {  
     "id":"1",
     "name":"Zombie Lab",
     "company":"2",
     "description":"Laboratorio zombie des",
     "story":"historia",
     "players":"2-5",
     "length":60,
     "mode":"Team",
     "price":15.0,
     "web":"http://zombielab.com/",
     "image":null,
  }]

然而，

GET / rest / v1 / games？city = 1？ template = summary 必须返回：

[  
  {  
     "id":"1",
     "name":"Zombie Lab",
     "description":"Laboratorio zombie des",
     "web":"http://zombielab.com/",
  }]

如何排除字段？

Answer 1

您可能需要查看Spring Data REST中的projections。基本上，这允许您定义DAO / DTO字段的子集（投影）。