REST 예시

SampleControllerTests.java

package com.jjundol.controller;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;

import com.google.gson.Gson;
import com.jjundol.domain.Ticket;

import lombok.Setter;
import lombok.extern.log4j.Log4j;

@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration({
	"file:src/main/webapp/WEB-INF/spring/root-context.xml",
	"file:src/main/webapp/WEB-INF/spring/appServlet/servlet-context.xml"})
@Log4j
public class SampleControllerTests {
	
	@Setter(onMethod_ = @Autowired)
	private WebApplicationContext ctx;
	
	private MockMvc mockMvc;
	
	@Before
	public void setup() {
		this.mockMvc = MockMvcBuilders.webAppContextSetup(ctx).build();
	}
	
	@Test
	public void testConvert() {
		Ticket ticket = new Ticket();
		ticket.setBon(123);
		ticket.setGrade("Admin");
		ticket.setOwner("AAA");
		
		String jsonStrTicket = new Gson().toJson(ticket);
		
		log.info("testConvert.... : " + jsonStrTicket);
		// testConvert.... : {"bon":123,"owner":"AAA","grade":"Admin"}
		
		try {
			mockMvc.perform(post("/sample/ticket")
					.contentType(MediaType.APPLICATION_JSON)
					.content(jsonStrTicket))
					.andExpect(status().is(200));
			// /sample/ticket으로 JSON데이터를 전달, Gson : Java객체 -> JSON
			
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

 

SampleController.java

- @RestController : 해당 클래스는 REST 처리를 해주는 Controller임을 지정

- producer 속성 : 처리 결과로 반환해줄 데이터의 형식 지정

- ResponseEntity : 데이터 반환시 HTTP 상태값도 같이 반환하기 위한 용도

- @PathVariable : @GetMapping의 value의 { } 에 있는 내용을 파라미터로 받도록 처리

- @RequestBody() : json 형태의 데이터를 java 객체의 형태로 변환시켜줌

package com.jjundol.controller;

import java.util.HashMap;
import java.util.Map;

import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.jjundol.domain.SampleVO;
import com.jjundol.domain.Ticket;

import lombok.extern.log4j.Log4j;

@RestController
@RequestMapping("/sample")
@Log4j
public class SampleController {
	
    // /sample/getText
	@GetMapping(value = "/getText", produces = "text/plain; charset=UTF-8")
	public String getText() {		
		log.info("MIME TYPE: " + MediaType.TEXT_PLAIN_VALUE);		
		return "안녕하세요!?";
	}
	
    // /sample/getSample
	@GetMapping(value = "/getSample", produces = { MediaType.APPLICATION_JSON_UTF8_VALUE,
												   MediaType.APPLICATION_XML_VALUE })
	public SampleVO getSample() {
		return new SampleVO(112, "스타", "로드");
	}
	
    // /sample/getSample2
	@GetMapping(value = "/getSample2")	// produces 속성은 생략가능
	public SampleVO getSample2() {
		return new SampleVO(113, "스타2", "로드2");
	}
	
    // /sample/getMap
	@GetMapping(value = "/getMap")
	public Map<String, SampleVO> getMap() {
		Map<String, SampleVO> map = new HashMap<String, SampleVO>();
		map.put("First", new SampleVO(114, "베이비", "그루트"));
		return map;
	}
	
    // /sample/check?height=177&wieht=65
	@GetMapping(value = "/check", params = { "height", "weight" })
	public ResponseEntity<SampleVO> check(Double height, Double weight) {
		
		SampleVO sample = new SampleVO(0, ""+height, ""+weight);
		
		ResponseEntity<SampleVO> result;
		
		if(height < 150) {
			result = ResponseEntity.status(HttpStatus.BAD_GATEWAY).body(sample);
		} else {
			result = ResponseEntity.status(HttpStatus.OK).body(sample);
		}
		return result;
	}
	
    // /sample/product/bag/789
	@GetMapping(value = "/product/{cat}/{pid}")
	public String[] getPath(@PathVariable("cat") String cat, @PathVariable("pid") String pid) {
		return new String[] {cat, pid};
	}
	
    // /sample/ticket, json데이터를 처리(@RequestBody(json -> 객체))
	@PostMapping(value = "/ticket")
	public Ticket convert(@RequestBody Ticket ticket) {
		// JSON > 객체
		log.info("convert....Ticket" + ticket);
		// convert....TicketTicket(bon=123, owner=AAA, grade=Admin)
		
		return null;
	}
	
}