Feature/261 리디렉션 수정 (#264)

* feat(redirection): 로그인 리디렉션 수정

- 로직 개선
- 실패 케이스 추가

* refactor: 패키지 이동

* refactor: 깃허브 경고 개행

Author: m-a-king

src/main/java/com/somemore/global/auth/oauth/handler/failure/CustomOAuthFailureHandler.java renamed to src/main/java/com/somemore/global/auth/oauth/handler/CustomOAuthFailureHandler.java

@@ -1,5 +1,6 @@
-package com.somemore.global.auth.oauth.handler.failure;
+package com.somemore.global.auth.oauth.handler;
 
+import com.somemore.global.auth.redirect.RedirectUseCase;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
@@ -13,11 +14,13 @@
 @Slf4j
 public class CustomOAuthFailureHandler extends SimpleUrlAuthenticationFailureHandler {
 
+    private final RedirectUseCase redirectUseCase;
+
+    private static final String FAILURE_PATH = "/error/login";
+
     @Override
     public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) {
-        // TODO 프론트엔드와 협의
-        log.error("안녕 난 말하는 감자야");
-        log.error(exception.getMessage());
-        log.error(exception.getCause().getMessage());
+        redirectUseCase.redirect(request, response, FAILURE_PATH);
+        log.error("OAuth 로그인 실패: {}", exception.getMessage());
     }
 }

src/main/java/com/somemore/global/auth/oauth/handler/success/CustomOAuthSuccessHandler.java renamed to src/main/java/com/somemore/global/auth/oauth/handler/CustomOAuthSuccessHandler.java

@@ -1,4 +1,4 @@
-package com.somemore.global.auth.oauth.handler.success;
+package com.somemore.global.auth.oauth.handler;
 
 import com.somemore.global.auth.cookie.CookieUseCase;
 import com.somemore.global.auth.jwt.domain.EncodedToken;

src/main/java/com/somemore/global/auth/redirect/RedirectService.java

@@ -4,6 +4,7 @@
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.security.web.RedirectStrategy;
 import org.springframework.stereotype.Service;
 
@@ -14,10 +15,33 @@
 @Slf4j
 public class RedirectService implements RedirectUseCase {
 
+    @Value("${app.front-url}")
+    private String frontUrl;
+
     private final RedirectStrategy redirectStrategy;
 
+    private static final String ERROR_PATH = "/error";
+
     @Override
-    public void redirect(HttpServletRequest request, HttpServletResponse response, String url) throws IOException {
-        redirectStrategy.sendRedirect(request, response, url);
+    public void redirect(HttpServletRequest request, HttpServletResponse response, String path) {
+        try {
+            redirectStrategy.sendRedirect(request, response, path);
+        } catch (IOException e) {
+            log.error("리디렉션 중 오류 발생 - 대상 URL: {}, 메시지: {}", path, e.getMessage());
+            handleRedirectFailure(request, response);
+        }
+    }
+
+    private void handleRedirectFailure(HttpServletRequest request, HttpServletResponse response) {
+        String fallbackUrl = buildFallbackUrl();
+        try {
+            redirectStrategy.sendRedirect(request, response, fallbackUrl);
+        } catch (IOException e) {
+            log.error("에러 페이지로 리디렉션 시도 중 오류 발생 - 메시지: {}", e.getMessage());
+        }
+    }
+
+    private String buildFallbackUrl() {
+        return frontUrl + RedirectService.ERROR_PATH;
     }
 }

src/main/java/com/somemore/global/auth/redirect/RedirectUseCase.java

@@ -2,8 +2,7 @@
 
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
-import java.io.IOException;
 
 public interface RedirectUseCase {
-    void redirect(HttpServletRequest request, HttpServletResponse response, String url) throws IOException;
+    void redirect(HttpServletRequest request, HttpServletResponse response, String path);
 }

src/main/java/com/somemore/global/config/SecurityConfig.java

@@ -6,8 +6,8 @@
 import com.somemore.global.auth.jwt.filter.JwtAuthFilter;
 import com.somemore.global.auth.jwt.filter.JwtExceptionFilter;
 import com.somemore.global.auth.jwt.usecase.GenerateTokensOnLoginUseCase;
-import com.somemore.global.auth.oauth.handler.failure.CustomOAuthFailureHandler;
-import com.somemore.global.auth.oauth.handler.success.CustomOAuthSuccessHandler;
+import com.somemore.global.auth.oauth.handler.CustomOAuthFailureHandler;
+import com.somemore.global.auth.oauth.handler.CustomOAuthSuccessHandler;
 import com.somemore.global.auth.oauth.service.CustomOAuth2UserService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Bean;