java - 配置 Jersey 1.18.x 服务器以进行 JSON POJO 映射

Question

此处为 Jersey 1.18.1。我在我的服务器上定义了以下 Jersey 资源:

@Path("/location")
@Produces(MediaType.APPLICATION_JSON)
public class LocationResourceImpl implements LocationResource {
    private ObjectMapper mapper;

    public LocationResourceImpl() {
        super();

        mapper = new ObjectMapper();
        // TODO: Configure for JSON POJO mapping how?!?
    }

    @GET
    @Path("address/{address_id}")
    @Override
    public Address getAddress(@PathParam("address_id") Long id) {
        Address address;

        address = new Address(
            1L,
            "19 ABC Dr",
            "Suite 3",
            "Testville",
            "NY",
            "US",
            "12345");

        return address;
    }
}

我的地址 POJO 已使用@JsonProperty 注释进行了正确注释。我试图弄清楚如何配置我的 ObjectMapper 实例，以便 getAddress(Long) 返回的 Address 实例以 JSON 形式返回我的地址。

关于我能做什么有什么想法吗？看起来像 Jersey 2.x 中添加了 setSerializationConfig 和 setDeserializationConfig 方法，但升级对我来说不是一个选择，因为我使用的是 DropWizard 0.7.1，取决于 Jersey 1.18.x。

Answer 1

使用 Dropwizard，我们不需要任何特殊配置即可获得基本的 Jackson POJO 映射支持。正如 Dropwizard User Guide: How it's Glued Together 中所述:

When your application starts up, it will spin up a Jetty HTTP server, see DefaultServerFactory. This server will have two handlers, one for your application port and the other for your admin port.

The application port has an HttpServlet as well, this is composed of DropwizardResourceConfig, which is an extension of Jersey’s resource configuration that performs scanning to find root resource and provider classes.

DropwizardResourceConfig is where the various ResourceMethodDispatchAdapter are registered to enable the following functionality:

• Enables using Jackson to parse request entities into objects and generate response entities from objects, all while performing validation.