https://spring.io/blog/2023/07/13/new-in-spring-6-1-restclient
New in Spring 6.1: RestClient
Spring Framework 6.1 M2 introduces the RestClient, a new synchronous HTTP client. As the name suggests, RestClient offers the fluent API of WebClient with the infrastructure of RestTemplate. Fourteen years ago, when RestTemplate was introduced in Spring Fr
spring.io
1. 일반적인 구현
Bean 등록
...
@Bean
fun fakeClassRestClient(): RestClient {
return RestClient.builder().baseUrl("https://dummy-json.mock.beeceptor.com")
.requestFactory(requestFactory())
.defaultHeaders { headers: HttpHeaders ->
headers.set(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
headers.set("header-custom", "9999-9999-1234")
}
.build()
}
...
Service
@Service
class FakeClassRestClientService(
private val fakeRestClient: RestClient
) {
fun posts(): List<Post> {
return fakeRestClient.get()
.uri("/posts")
.retrieve()
.body(object : ParameterizedTypeReference<List<Post>>(){})!!
}
fun post(): Post {
return fakeRestClient.get()
.uri("/posts/1")
.retrieve()
.body(object : ParameterizedTypeReference<Post>(){})!!
}
}
Test
@SpringBootTest(classes = [SpringBootEduApplication::class])
class FakeClassRestClientServiceTest(
sut: FakeClassRestClientService
) : StringSpec(
{
val log = KotlinLogging.logger {}
"RestClient 목록 조회" {
val posts = sut.posts()
log.info{posts}
posts.size shouldBeGreaterThan 0
}
"RestClient 단건 조회" {
val post = sut.post()
log.info{post}
post shouldNotBe null
}
}
)
2. 인터페이스 기반
설정
@Bean
fun fakeRestClientService(): FakeRestClientService {
val client = RestClient.builder().baseUrl("https://dummy-json.mock.beeceptor.com")
.requestFactory(requestFactory())
.defaultHeaders { headers: HttpHeaders ->
headers.set(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
headers.set("header-custom", "9999-9999-1234")
}
.build()
val factory = HttpServiceProxyFactory
.builderFor(RestClientAdapter.create(client))
.build()
return factory.createClient(FakeRestClientService::class.java)
}
인터페이스
interface FakeRestClientService {
@GetExchange("/posts")
fun posts(): List<Post>
@GetExchange("/posts/1")
fun post(@RequestParam id: Long): Post
}
Test
@SpringBootTest(classes = [SpringBootEduApplication::class])
class FakeRestClientServiceTest(
sut: FakeRestClientService
) : StringSpec(
{
val log = KotlinLogging.logger {}
"RestClient 목록 조회" {
val posts = sut.posts()
log.info{posts}
posts.size shouldBeGreaterThan 0
}
"RestClient 단건 조회" {
val post = sut.post(1)
log.info{post}
post.id shouldBe 1
}
}
)https://github.com/KimHyeongi/spring-boot-edu
GitHub - KimHyeongi/spring-boot-edu: spring boot 이것저것
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