From 55c47a43e61b48ba58f007da92915cb4970792b8 Mon Sep 17 00:00:00 2001
From: ByungCheol <kenneth73510@nurier.co.kr>
Date: Sun, 7 Jun 2026 20:32:37 +0900
Subject: [PATCH] =?UTF-8?q?fix:=20=EC=97=85=EB=A1=9C=EB=93=9C=20=EC=9D=B4?=
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- 앱은 출처가 localhost 라 /api/images/{id} 상대경로가 백엔드로 안 감 → 안 보임
- app.public-url(기본 https://app.sblog.kr) 기준 절대 URL 반환 → 웹/PC/APK 모두 로드

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 .../com/sb/web/board/controller/BoardImageController.java | 8 +++++++-
 src/main/resources/application.yml                        | 2 ++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/sb/web/board/controller/BoardImageController.java b/src/main/java/com/sb/web/board/controller/BoardImageController.java
index 5fa45a1..70ba315 100644
--- a/src/main/java/com/sb/web/board/controller/BoardImageController.java
+++ b/src/main/java/com/sb/web/board/controller/BoardImageController.java
@@ -6,6 +6,7 @@ import com.sb.web.board.domain.BoardImage;
 import com.sb.web.board.service.BoardImageService;
 import com.sb.web.common.exception.ApiException;
 import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.CacheControl;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -28,6 +29,10 @@ public class BoardImageController {
 
     private final BoardImageService service;
 
+    // 앱(Capacitor) 출처가 localhost 라 상대경로가 안 통하므로 절대 URL 로 반환
+    @Value("${app.public-url:}")
+    private String publicUrl;
+
     @PostMapping("/api/board/images")
     public Map<String, String> upload(
             @RequestParam("image") MultipartFile file,
@@ -40,7 +45,8 @@ public class BoardImageController {
             throw new ApiException(HttpStatus.BAD_REQUEST, "이미지 파일만 업로드할 수 있습니다.");
         }
         Long id = service.save(current.getId(), contentType, file.getBytes());
-        return Map.of("url", "/api/images/" + id);
+        String base = (publicUrl == null) ? "" : publicUrl.replaceAll("/+$", "");
+        return Map.of("url", base + "/api/images/" + id);
     }
 
     @GetMapping("/api/images/{id}")
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 85e9e6c..c2cef91 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -74,6 +74,8 @@ google:
 app:
   crypto:
     account-key: ${ACCOUNT_CRYPTO_KEY:}
+  # 업로드 이미지 등 외부에서 접근할 절대 URL 베이스. 앱(Capacitor)은 출처가 localhost 라 상대경로가 안 통함.
+  public-url: ${PUBLIC_URL:https://app.sblog.kr}
 
 # ===== Logging =====
 logging: