[Hotfix] - Refresh 토큰으로 재발급 요청시 NullPointException 해결, CORS c…

…onfig 빠르게 Cherry pick (#78)

* hotfix: `Refresh` 토큰으로 발급 요청시 `NullPointException` 발생하는 버그 해결

* refactor : cors config 수정

---------

Co-authored-by: kcsc2217 <k12002@nate.com>

src/main/java/com/palettee/global/configs/CorsConfig.java

@@ -16,11 +16,12 @@ public CorsConfigurationSource corsConfigurationSource(){
         CorsConfiguration config = new CorsConfiguration();
 
         config.setAllowCredentials(true);
-        config.setAllowedOrigins(List.of("http://localhost:3000", "https://palettee22.netlify.app", "https://palettee.site"));
+        config.setAllowedOrigins(List.of("http://localhost:3000", "https://palettee22.netlify.app", "https://www.palettee.site"));
         config.addAllowedMethod("*");
         config.setAllowedHeaders(List.of("*"));
         config.setExposedHeaders(List.of("*"));
-
+        // 클라이언트에서 접근할 수 있도록 노출할 헤더를 명시
+        config.setExposedHeaders(List.of("Authorization", "Content-Type", "Cache-Control"));
 
 
 

src/main/java/com/palettee/global/security/jwt/controllers/TokenController.java

@@ -101,11 +101,12 @@ public TokenIssueResponse testIssueToken(
     private String getRefreshTokenFromCookie(HttpServletRequest request) {
         Cookie[] cookies = request.getCookies();
 
-        return Arrays.stream(cookies).parallel()
-                .filter(cookie -> cookie.getName().equals(REFRESH_TOKEN_COOKIE_KEY))
-                .map(Cookie::getValue)
-                .findFirst()
-                .orElse(null);
+        return cookies == null ? null :
+                Arrays.stream(cookies).parallel()
+                        .filter(cookie -> cookie.getName().equals(REFRESH_TOKEN_COOKIE_KEY))
+                        .map(Cookie::getValue)
+                        .findFirst()
+                        .orElse(null);
     }