google login -> auto join

spring-security/src/main/java/com/spring/security1/config/SecurityConfig.java

@@ -1,7 +1,7 @@
 package com.spring.security1.config;
 
 import com.spring.security1.config.oauth.PrincipalOauth2UserService;
-import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
@@ -11,12 +11,11 @@ import org.springframework.security.config.annotation.web.configuration.WebSecur
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 
 @Configuration
-@RequiredArgsConstructor
 @EnableWebSecurity // 스프링 시큐리티 필터(SecurityConfig)가 스프링 필터 체인에 등록
 @EnableGlobalMethodSecurity(securedEnabled = true, prePostEnabled = true) // secured 어노테이션 활성화 , preAuthorized 활성화
 public class SecurityConfig extends WebSecurityConfigurerAdapter {
-
-    private final PrincipalOauth2UserService principalOauth2UserService;
+    @Autowired
+    private PrincipalOauth2UserService principalOauth2UserService;
 
     @Bean
     public BCryptPasswordEncoder encodePwd() {

spring-security/src/main/java/com/spring/security1/config/auth/PrincipalDetails.java

@@ -22,21 +22,24 @@ import java.util.Map;
 public class PrincipalDetails implements UserDetails, OAuth2User {
 
     private User user;
+    private Map<String, Object> attributes;
 
+    // 일반 로그인
     public PrincipalDetails(User user) {
         this.user = user;
     }
 
+    // OAuth 로그인인
+   public PrincipalDetails(User user, Map<String, Object> attributes) {
+        this.user = user;
+        this.attributes = attributes;
+    }
+
     // 해당 User의 권한을 리턴하는 곳
     @Override
     public Collection<? extends GrantedAuthority> getAuthorities() {
         Collection<GrantedAuthority> collection = new ArrayList<>();
-        collection.add(new GrantedAuthority() {
-            @Override
-            public String getAuthority() {
-                return user.getRole();
-            }
-        });
+        collection.add((GrantedAuthority) () -> user.getRole());
         return collection;
     }
 
@@ -75,7 +78,7 @@ public class PrincipalDetails implements UserDetails, OAuth2User {
 
     @Override
     public Map<String, Object> getAttributes() {
-        return null;
+        return attributes;
     }
 
     @Override

spring-security/src/main/java/com/spring/security1/config/auth/PrincipalDetailsService.java

@@ -18,6 +18,7 @@ public class PrincipalDetailsService implements UserDetailsService {
     private final UserRepository userRepository;
 
 
+    // 함수 종료시 @AuthenticationPrincipal 어노테이션이 만들어진다.
     @Override
     public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
         User userEntity = userRepository.findByUsername(username);

spring-security/src/main/java/com/spring/security1/config/oauth/PrincipalOauth2UserService.java

@@ -1,5 +1,10 @@
 package com.spring.security1.config.oauth;
 
+import com.spring.security1.config.auth.PrincipalDetails;
+import com.spring.security1.model.User;
+import com.spring.security1.repository.UserRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;
 import org.springframework.security.oauth2.client.userinfo.OAuth2UserRequest;
 import org.springframework.security.oauth2.core.OAuth2AuthenticationException;
@@ -7,18 +12,45 @@ import org.springframework.security.oauth2.core.user.OAuth2User;
 import org.springframework.stereotype.Service;
 
 @Service
+@RequiredArgsConstructor
 public class PrincipalOauth2UserService extends DefaultOAuth2UserService {
 
+    private final BCryptPasswordEncoder bCryptPasswordEncoder;
+    private final UserRepository userRepository;
+
     // 구글로부터 받은 userRequest 데이터에 대한 후처리 되는 함수
+    // 함수 종료시 @AuthenticationPrincipal 어노테이션이 만들어진다.
     @Override
     public OAuth2User loadUser(OAuth2UserRequest userRequest) throws OAuth2AuthenticationException {
         System.out.println("userRequest: "+ userRequest.getClientRegistration()); // registrationId로 어떤oauth로 로그인했는지 확인가능.
         System.out.println("userRequest: "+ userRequest.getAccessToken().getTokenValue());
+
+        OAuth2User oAuth2User = super.loadUser(userRequest);
         // 구글 로그인 버튼 클릭 -> 구글 로그인 창 -> 로그인을 완료 -> code를 리턴(OAuth-Client 라이브러리) -> AccessToken 요청
         // userRequest 정보 -> loadUser함수 -> 구글로 부터 회원 프로필 받아준다.
-        System.out.println("userRequest: "+ super.loadUser(userRequest).getAttributes());
+        System.out.println("userRequest: "+ oAuth2User.getAttributes());
 
-        OAuth2User auth2User = super.loadUser(userRequest);
-        return super.loadUser(userRequest);
+        String provider = userRequest.getClientRegistration().getRegistrationId(); // google
+        String providerId = oAuth2User.getAttribute("sub");
+        String username = provider+"_"+providerId;
+        String password = bCryptPasswordEncoder.encode("패스워드");
+        String email = oAuth2User.getAttribute("email");
+        String role = "ROLE_USER";
+
+        User userEntity = userRepository.findByUsername(username);
+
+        if(userEntity == null) {
+            userEntity = User.builder()
+                    .username(username)
+                    .password(password)
+                    .email(email)
+                    .provider(provider)
+                    .providerId(providerId)
+                    .role(role)
+                    .build();
+            userRepository.save(userEntity);
+        }
+
+        return new PrincipalDetails(userEntity, oAuth2User.getAttributes());
     }
 }

spring-security/src/main/java/com/spring/security1/controller/IndexController.java

@@ -54,9 +54,11 @@ public class IndexController {
         return "index";
     }
 
+    // OAuth 로그인, 일반 로그인 모두 PrincipalDetails객체로 받을 수 있다.
     @ResponseBody
     @GetMapping("/user")
-    public String user() {
+    public String user(@AuthenticationPrincipal PrincipalDetails principalDetails) {
+        System.out.println("principalDetails :" + principalDetails.getUser());
         return "user";
     }
 

spring-security/src/main/java/com/spring/security1/model/User.java

@@ -2,6 +2,7 @@ package com.spring.security1.model;
 
 
 import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 import org.hibernate.annotations.CreationTimestamp;
@@ -16,6 +17,7 @@ import java.sql.Timestamp;
 @Data
 @AllArgsConstructor
 @NoArgsConstructor
+@Builder
 public class User {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)