java - 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:

必须返回 GET/rest/v1/games?city=1:

[  
  {  
     "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,
  }]

但是，

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

您可能想看看 projections在 Spring Data REST 中。基本上，这允许您定义 DAO/DTO 字段的子集(投影)。