spring 카카오 로그인 api 사용하기 2

이번에는 토큰까지 한번에 받아오는 코드로!

 

package com.myspring.blog.kakao;

 

@Controller
@RequestMapping("/kakao")
public class kakaoController {
 private Kakao_restapi kakao_restapi=new Kakao_restapi();
 
 @RequestMapping(value="/oauth",method= RequestMethod.GET)
 public String kakaoConnect() {

  StringBuffer url = new StringBuffer();
  url.append("https://kauth.kakao.com/oauth/authorize?");
  url.append("client_id=" + "각자의 id~~");
  url.append("&redirect_uri=http://localhost:8080/mytest04/kakao/callback");
  url.append("&response_type=code");

  return "redirect:" + url.toString();
 }
 
 @RequestMapping(value="/callback",produces="application/json",method= {RequestMethod.GET, RequestMethod.POST})
 public String kakaoLogin(@RequestParam("code")String code,RedirectAttributes ra,HttpSession session,HttpServletResponse response )throws IOException {
  
  
  System.out.println("kakao code:"+code);
  JsonNode access_token=kakao_restapi.getKakaoAccessToken(code); -> 새로 추가된 코드임
  System.out.println(access_token);
  return "home";
 }

}

 

새로 추가된  kakao_restapi 클래스

 

 

public class Kakao_restapi {
 public static JsonNode getKakaoAccessToken(String code) { -> 여기서 코드 ~~
  System.out.println("restapi클래스"+code);
        final String RequestUrl = "https://kauth.kakao.com/oauth/token"; // Host
        final List<NameValuePair> postParams = new ArrayList<NameValuePair>();
 
        postParams.add(new BasicNameValuePair("grant_type", "authorization_code"));
        postParams.add(new BasicNameValuePair("client_id", "각자의 키로")); // REST API KEY
        postParams.add(new BasicNameValuePair("redirect_uri", "http://localhost:8080/mytest04/kakao/callback")); // 리다이렉트 URI
        postParams.add(new BasicNameValuePair("code", code)); // 로그인 과정중 얻은 code 값
 
        final HttpClient client = HttpClientBuilder.create().build();
        final HttpPost post = new HttpPost(RequestUrl);
 
        JsonNode returnNode = null;
 
        try {
            post.setEntity(new UrlEncodedFormEntity(postParams));
 
            final HttpResponse response = client.execute(post);
            final int responseCode = response.getStatusLine().getStatusCode();
 
            System.out.println("\nSending 'POST' request to URL : " + RequestUrl);
            System.out.println("Post parameters : " + postParams);
            System.out.println("Response Code : " + responseCode);
 
            // JSON 형태 반환값 처리
            ObjectMapper mapper = new ObjectMapper();
 
            returnNode = mapper.readTree(response.getEntity().getContent());
 
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
        }
 
        return returnNode;
    }
}