package com.github.sejoung.reactive.cookies;


import org.springframework.http.*;
import org.springframework.web.client.RestTemplate;

import java.io.IOException;
import java.nio.charset.Charset;

public class CookiesTest {
    public static void main(String[] args) throws IOException {
        RestTemplate restTemplate = new RestTemplate();
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(new MediaType("application", "json", Charset.forName("UTF-8")));
		// 아래의 쿠키 데이터를 많이 넣어서 사이즈를 늘리면서 테스트가 가능함
        headers.add("Cookie", "TEST=1" );
        ResponseEntity<String> response = restTemplate.exchange("http://localhost:8080/rest", HttpMethod.GET, new HttpEntity<String>(headers), String.class);

        System.out.println(response.getStatusCode());

    }
}

package com.github.sejoung.reactive.cookies;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.Cookie;

@SpringBootApplication
public class CookiesTestApplication {

    @RestController
    public static class MyController {

        @GetMapping("/rest")
        public String rest(@CookieValue("TEST") String testCookie) {
            System.out.println("ok "+testCookie);
            return "ok";
        }

    }

    public static void main(String[] args) {
        SpringApplication.run(CookiesTestApplication.class, args);
    }
}