Handles OAuth2 Failure

src/main/java/com/hideyoshi/backendportfolio/base/security/SecurityConfig.java

@@ -87,7 +87,8 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
         http.oauth2Login()
             .authorizationEndpoint()
             .authorizationRequestRepository(this.oAuthRequestRepository)
-            .and().successHandler(this::successHandler);
+            .and().successHandler(this::successHandler)
+            .failureHandler(this::failureHandler);
     }
 
     private void successHandler(HttpServletRequest request,
@@ -104,6 +105,12 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
 
     }
 
+    private void failureHandler(
+            HttpServletRequest request,
+            HttpServletResponse response,
+            AuthenticationException e) {
+        throw new AuthenticationInvalidException("Invalid Authentication Attempt.");
+    }
 
     @Bean
     public AuthenticationManager authenticationManagerBean() throws Exception {

src/main/java/com/hideyoshi/backendportfolio/base/security/oauth/repo/OAuthRequestRepository.java

@@ -17,8 +17,6 @@ public class OAuthRequestRepository implements AuthorizationRequestRepository<OA
     public OAuth2AuthorizationRequest loadAuthorizationRequest(HttpServletRequest request) {
 
         String state = request.getParameter("state");
-        log.info(state);
-
         if (Objects.nonNull(state)) {
             return removeAuthorizationRequest(request);
         }