스프링 프레임 워크에서 지원

• 리퀘스트 바디를 객체로 파싱
• 객체를 리스폰스 바디로 파싱

@PostMapping("/user")
public @ResponseBody User create(@RequestBody User user) {
	return null;
}

content-type에 따라 컨버팅 한다.

• @RestController 가 붙어 있으면 @ResponseBody는 생략이 가능하다.
• @Controller 일 경우 뷰네임 리졸버를 쓰기 때문에 뷰를 찾으려 함

테스트

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
import org.springframework.http.MediaType;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@RunWith(SpringRunner.class)
@WebMvcTest(UserController.class)
public class UserControllerTest {

	@Autowired
	MockMvc mockMvc;

	@Test
	public void hello() throws Exception {
		mockMvc.perform(get("/hello"))
				.andExpect(status().isOk())
				.andExpect(content().string("hello"));
	}

	@Test
	public void createUser_JSON() throws Exception {
		String userJson = "{\\"username\\":\\"cmlee\\", \\"password\\":\\"123\\"}";
		mockMvc.perform(post("/users/create")
				.contentType(MediaType.APPLICATION_JSON_UTF8)
				.accept(MediaType.APPLICATION_JSON_UTF8)
				.content(userJson))
			.andExpect(status().isOk())
			.andExpect(jsonPath("$.username",
					is(equalTo("cmlee"))))
			.andExpect(jsonPath("$.password",
					is(equalTo("123"))));
	}
}

@RestController
public class UserController {

	@GetMapping("/hello")
	public String hello() {
		return "hello";
	}

	@PostMapping("/users/create")
	public User create(@RequestBody User user) {
		return user;
	}
}