[JWT 기능 개선] Refresh Token 생성 및 갱신 로직을 모듈화하여 JwtUtils 클래스에 메서드 추가. JwtTokenIssuanceFilter와 JwtTokenValidationFilter에서 새로운 메서드 사용으로 코드 간결화 및 유지보수성 향상.

src/main/java/com/bio/bio_backend/global/security/JwtTokenIssuanceFilter.java

@@ -3,7 +3,6 @@ package com.bio.bio_backend.global.security;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import jakarta.servlet.FilterChain;
 import jakarta.servlet.ServletException;
-import jakarta.servlet.http.Cookie;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import com.bio.bio_backend.global.dto.ApiResponseDto;
@@ -76,29 +75,18 @@ public class JwtTokenIssuanceFilter extends UsernamePasswordAuthenticationFilter
         String accessToken = jwtUtils.generateToken(member.getUserId(), member.getRole().getValue(),
                 Long.parseLong(Objects.requireNonNull(env.getProperty("token.expiration_time_access"))));
 
-        String refreshToken = jwtUtils.generateToken(member.getUserId(), member.getRole().getValue(),
-                Long.parseLong(Objects.requireNonNull(env.getProperty("token.expiration_time_refresh"))));
+        // 모듈화된 메서드 사용
+        String refreshToken = jwtUtils.createAndSaveRefreshToken(member.getUserId(), member.getRole().getValue());
         
 
         member.setRefreshToken(refreshToken);
         member.setLastLoginAt(LocalDateTime.now());
 
-        memberService.updateRefreshToken(member);
-
-        // Refresh 토큰 쿠키 저장
-        Cookie refreshTokenCookie = new Cookie("RefreshToken", refreshToken);
-        refreshTokenCookie.setHttpOnly(true);
-        refreshTokenCookie.setSecure(false);
-        refreshTokenCookie.setPath("/");
-        refreshTokenCookie.setMaxAge(Integer.parseInt(env.getProperty("token.expiration_time_refresh")));
+        // Refresh 토큰 쿠키 저장 - 모듈화된 메서드 사용
+        jwtUtils.setRefreshTokenCookie(response, refreshToken);
 
         // JWT 토큰 전달
         response.setHeader("Authorization", "Bearer " + accessToken);
-        response.addHeader("Set-Cookie", 
-        	    String.format("%s=%s; HttpOnly; Secure; Path=/; Max-Age=%d; SameSite=None", 
-        	    refreshTokenCookie.getName(), 
-        	    refreshTokenCookie.getValue(), 
-        	    refreshTokenCookie.getMaxAge()));
 
         SecurityContextHolderStrategy contextHolder = SecurityContextHolder.getContextHolderStrategy();
         SecurityContext context = contextHolder.createEmptyContext();

src/main/java/com/bio/bio_backend/global/security/JwtTokenValidationFilter.java

@@ -73,6 +73,10 @@ public class JwtTokenValidationFilter extends OncePerRequestFilter {
                 // 새로운 Access Token을 응답 헤더에 설정
                 response.setHeader("Authorization", "Bearer " + newAccessToken);
                 
+                // Refresh Token 갱신
+                String newRefreshToken = jwtUtils.refreshTokens(username, role);
+                jwtUtils.setRefreshTokenCookie(response, newRefreshToken);
+                
                 // 인증 정보 설정
                 UserDetails userDetails = memberService.loadUserByUsername(username);
                 if (userDetails != null) {

src/main/java/com/bio/bio_backend/global/utils/JwtUtils.java

@@ -6,15 +6,19 @@ import io.jsonwebtoken.io.Decoders;
 import io.jsonwebtoken.security.Keys;
 import jakarta.servlet.http.Cookie;
 import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
 import com.bio.bio_backend.domain.base.member.service.MemberService;
+import com.bio.bio_backend.domain.base.member.dto.MemberDto;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.env.Environment;
 import org.springframework.stereotype.Component;
 import org.springframework.util.StringUtils;
 
 import javax.crypto.SecretKey;
 import java.util.Date;
+import java.util.Objects;
 
 @Component
 @RequiredArgsConstructor
@@ -22,6 +26,7 @@ import java.util.Date;
 public class JwtUtils {
 
     private final MemberService memberService;
+    private final Environment env;
 
     @Value("${token.secret_key}")
     private String SECRET_KEY;
@@ -87,4 +92,38 @@ public class JwtUtils {
         }
         return null;
     }
+
+    // Refresh Token 생성 및 DB 저장
+    public String createAndSaveRefreshToken(String username, String role) {
+        String refreshToken = generateToken(username, role,
+                Long.parseLong(Objects.requireNonNull(env.getProperty("token.expiration_time_refresh"))));
+        
+        // MemberDto 객체 생성하여 updateRefreshToken 호출
+        MemberDto member = new MemberDto();
+        member.setUserId(username);
+        member.setRefreshToken(refreshToken);
+        memberService.updateRefreshToken(member);
+        
+        return refreshToken;
+    }
+    
+    // Refresh Token 갱신 (Access Token 갱신 시 함께)
+    public String refreshTokens(String username, String role) {
+        // 새로운 Refresh Token 생성 및 DB 저장
+        String newRefreshToken = createAndSaveRefreshToken(username, role);
+        
+        log.info("Refresh Token 갱신 완료: {}", username);
+        return newRefreshToken;
+    }
+    
+    // Refresh Token 쿠키 설정
+    public void setRefreshTokenCookie(HttpServletResponse response, String refreshToken) {
+        Cookie refreshTokenCookie = new Cookie("RefreshToken", refreshToken);
+        refreshTokenCookie.setHttpOnly(true);
+        refreshTokenCookie.setSecure(false);
+        refreshTokenCookie.setPath("/");
+        refreshTokenCookie.setMaxAge(Integer.parseInt(env.getProperty("token.expiration_time_refresh")));
+        
+        response.addCookie(refreshTokenCookie);
+    }
 }