spring - 如何使用 Spring HATEOAS 更改 HAL 链接格式

Question

我正在使用 Spring HATEOAS (0.16.0.RELEASE) 构建一个 Spring REST 应用程序，我希望 JSON 链接输出如下所示:

_links: {
   self: {
     href: "https://<ip>/api/policies/321"
   }
}

虽然它呈现如下:

   "links":
      [{
       "rel":"self",
       "href":"http://<ip>/api/policies/321"
      }]

我正在使用 HATEOAS Resource 和 ResourceAssembler。

为什么我得到的是这种格式而不是另一种？怎么改？

Answer 1

In order to use HAL as the message format language for our RESTful API, and enable automatic pagination, we need some configuration changes in our applicaiton. Since Spring Data and Spring HATEOAS already provides annotations for configuration, all we need is to add those annotations:

@Configuration
@EnableWebMvc
@EnableSpringDataWebSupport
@EnableHypermediaSupport(type = { HypermediaType.HAL })
@ComponentScan(basePackages = {
        "com.jiwhiz.rest"
})
public class WebConfig extends WebMvcConfigurerAdapter {
    @Override
    public void configureContentNegotiation(ContentNegotiationConfigurer c) {
        c.defaultContentType(MediaTypes.HAL_JSON);
    }
}

@EnableSpringDataWebSupport will add support for pagination and @EnableHypermediaSupport(type = { HypermediaType.HAL }) will add hypermedia support. Then we set default content type to application/hal+json.

引用:Design and Build RESTful API with Spring HATEOAS by 袁霁