jpablog : kakao login api - get user profile

jpablog/src/main/java/com/example/jpablog/controller/api/UserApiController.java

@@ -1,8 +1,13 @@
 package com.example.jpablog.controller.api;
 
 import com.example.jpablog.dto.ResponseDto;
+import com.example.jpablog.model.KakaoProfile;
+import com.example.jpablog.model.OAuthToken;
 import com.example.jpablog.model.User;
+import com.example.jpablog.service.KakaoLogin;
 import com.example.jpablog.service.UserService;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.*;
 import org.springframework.security.authentication.AuthenticationManager;
@@ -45,27 +50,12 @@ public class UserApiController {
     @GetMapping("/auth/kakao/callback")
     public String kakaoCallback(String code) {
         // Retrofit2, OkHttp, RestTemplate, HttpsURLConnection 등이 있음
-        RestTemplate rt = new RestTemplate();
-        HttpHeaders headers = new HttpHeaders();
-        headers.add("Content-type", "application/x-www-form-urlencoded; charset=utf-8");
+        KakaoLogin kakaoLogin = new KakaoLogin();
 
-        MultiValueMap<String, String> params = new LinkedMultiValueMap<>();
-        params.add("grant_type", "authorization_code");
-        params.add("client_id", "e40b81f26358aa250b10a59dc8f3aa62");
-        params.add("redirect_uri", "http://localhost:8080/auth/kakao/callback");
-        params.add("code", code);
-
-        HttpEntity<MultiValueMap<String, String>> kakaoTokenRequest =
-                new HttpEntity<>(params, headers);
-
-        ResponseEntity<String> response = rt.exchange(
-                "https://kauth.kakao.com/oauth/token",
-                HttpMethod.POST,
-                kakaoTokenRequest,
-                String.class
-        );
-
-        return "카카오 토큰 요청 완료" + response;
+        OAuthToken token = kakaoLogin.getCode(code);
+        KakaoProfile kakaoProfile = kakaoLogin.getKakaoProfile(token);
+        System.out.println(kakaoProfile);
+        return "ㅎㅇ";
     }
     /*// 기본 로그인
     @PostMapping("/user/login")

jpablog/src/main/java/com/example/jpablog/model/KakaoProfile.java

@@ -0,0 +1,41 @@
+package com.example.jpablog.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+public class KakaoProfile {
+    public Integer id;
+    public String connected_at;
+    public Properties properties;
+    public KakaoAccount kakao_account;
+}
+@Data
+class Properties {
+    public String nickname;
+    public String profile_image;
+    public String thumbnail_image;
+}
+
+@Data
+class KakaoAccount {
+    public Boolean profile_needs_agreement;
+    public Profile profile;
+    public Boolean has_email;
+    public Boolean email_needs_agreement;
+    public Boolean is_email_valid;
+    public Boolean is_email_verified;
+    public String email;
+}
+
+@Data
+class Profile {
+    public String nickname;
+    public String thumbnail_image_url;
+    public String profile_image_url;
+}
+
+
+

jpablog/src/main/java/com/example/jpablog/model/OAuthToken.java

@@ -0,0 +1,13 @@
+package com.example.jpablog.model;
+
+import lombok.Data;
+
+@Data
+public class OAuthToken {
+    private String access_token;
+    private String token_type;
+    private String refresh_token;
+    private int expires_in;
+    private String scope;
+    private int refresh_token_expires_in;
+}

jpablog/src/main/java/com/example/jpablog/service/KakaoLogin.java

@@ -0,0 +1,73 @@
+package com.example.jpablog.service;
+
+import com.example.jpablog.model.KakaoProfile;
+import com.example.jpablog.model.OAuthToken;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.ResponseEntity;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestTemplate;
+
+public class KakaoLogin {
+
+    public OAuthToken getCode(String code) {
+        RestTemplate rt = new RestTemplate();
+        HttpHeaders headers = new HttpHeaders();
+        headers.add("Content-type", "application/x-www-form-urlencoded; charset=utf-8");
+
+        MultiValueMap<String, String> params = new LinkedMultiValueMap<>();
+        params.add("grant_type", "authorization_code");
+        params.add("client_id", "e40b81f26358aa250b10a59dc8f3aa62");
+        params.add("redirect_uri", "http://localhost:8080/auth/kakao/callback");
+        params.add("code", code);
+
+        HttpEntity<MultiValueMap<String, String>> kakaoTokenRequest =
+                new HttpEntity<>(params, headers);
+
+        ResponseEntity<String> response = rt.exchange(
+                "https://kauth.kakao.com/oauth/token",
+                HttpMethod.POST,
+                kakaoTokenRequest,
+                String.class
+        );
+        // Gson, Json Simple, ObjectMapper
+        ObjectMapper objectMapper = new ObjectMapper();
+        OAuthToken oAuthToken = null;
+        try {
+            oAuthToken = objectMapper.readValue(response.getBody(), OAuthToken.class);
+        } catch (JsonProcessingException e) {
+            e.printStackTrace();
+        }
+        return oAuthToken;
+    }
+
+    public KakaoProfile getKakaoProfile(OAuthToken token) {
+        RestTemplate rt = new RestTemplate();
+        HttpHeaders headers = new HttpHeaders();
+        headers.add("Authorization", "Bearer " + token.getAccess_token());
+        headers.add("Content-type", "application/x-www-form-urlencoded; charset=utf-8");
+
+        HttpEntity<MultiValueMap<String, String>> kakaoProfileRequest =
+                new HttpEntity<>(headers);
+
+        ResponseEntity<String> response = rt.exchange(
+                "https://kapi.kakao.com/v2/user/me",
+                HttpMethod.POST,
+                kakaoProfileRequest,
+                String.class
+        );
+
+        ObjectMapper objectMapper = new ObjectMapper();
+        KakaoProfile kakaoProfile = null;
+        try {
+            kakaoProfile = objectMapper.readValue(response.getBody(), KakaoProfile.class);
+        } catch (JsonProcessingException e) {
+            e.printStackTrace();
+        }
+        return kakaoProfile;
+    }
+}

jpablog/src/main/webapp/WEB-INF/views/user/loginForm.jsp

@@ -13,7 +13,7 @@
             <input name="password" type="password" class="form-control" placeholder="Enter password" id="password">
         </div>
         <button id="btn-login" type="submit" class="btn btn-primary">로그인</button>
-        <a href="https://kauth.kakao.com/oauth/authorize?client_id=e40b81f26358aa250b10a59dc8f3aa62&redirect_uri=http://localhost:8080/auth/kakao/callback&response_type=code&scope=account_email"><img height="38px" src="/images/kakao_login_medium.png" alt="kakao_login_button"/> </a>
+        <a href="https://kauth.kakao.com/oauth/authorize?client_id=e40b81f26358aa250b10a59dc8f3aa62&redirect_uri=http://localhost:8080/auth/kakao/callback&response_type=code"><img height="38px" src="/images/kakao_login_medium.png" alt="kakao_login_button"/> </a>
     </form>
 </div>