From 86e8408f278e938441240eb61328b833ec052330 Mon Sep 17 00:00:00 2001
From: teddy <teddy.kim.kim@tf.dabeeo.com>
Date: Fri, 30 Jan 2026 16:51:27 +0900
Subject: [PATCH] =?UTF-8?q?RestTemplateConfig=20=EC=88=98=EC=A0=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../resttemplate/ExternalHttpClient.java      | 38 +++++++------------
 1 file changed, 14 insertions(+), 24 deletions(-)

diff --git a/src/main/java/com/kamco/cd/kamcoback/config/resttemplate/ExternalHttpClient.java b/src/main/java/com/kamco/cd/kamcoback/config/resttemplate/ExternalHttpClient.java
index fdaef5a7..8c2e36b1 100644
--- a/src/main/java/com/kamco/cd/kamcoback/config/resttemplate/ExternalHttpClient.java
+++ b/src/main/java/com/kamco/cd/kamcoback/config/resttemplate/ExternalHttpClient.java
@@ -22,7 +22,10 @@ public class ExternalHttpClient {
   private final RestTemplate restTemplate;
   private final ObjectMapper objectMapper;
 
-  /** responseType(예: DTO.class, String.class 등)로 그대로 역직렬화해서 받는 호출. - 응답 타입이 명확히 고정일 때 사용 */
+  /**
+   * - responseType이 DTO면: DTO로 역직렬화 - responseType이 String.class면: 응답을 byte[]로 받아 UTF-8 원문 문자열로 반환
+   * (배열/객체 등 유동 JSON 안전)
+   */
   public <T> ExternalCallResult<T> call(
       String url, HttpMethod method, Object body, HttpHeaders headers, Class<T> responseType) {
 
@@ -32,31 +35,19 @@ public class ExternalHttpClient {
     HttpEntity<Object> entity = new HttpEntity<>(body, resolvedHeaders);
 
     try {
+      if (responseType == String.class) {
+        ResponseEntity<byte[]> res = restTemplate.exchange(url, method, entity, byte[].class);
+        String raw =
+            (res.getBody() == null) ? null : new String(res.getBody(), StandardCharsets.UTF_8);
+
+        @SuppressWarnings("unchecked")
+        T casted = (T) raw; // responseType == String.class 이므로 안전
+        return new ExternalCallResult<>(res.getStatusCodeValue(), true, casted, null);
+      }
+
       ResponseEntity<T> res = restTemplate.exchange(url, method, entity, responseType);
       return new ExternalCallResult<>(res.getStatusCodeValue(), true, res.getBody(), null);
-    } catch (HttpStatusCodeException e) {
-      return new ExternalCallResult<>(
-          e.getStatusCode().value(), false, null, e.getResponseBodyAsString());
-    }
-  }
 
-  /**
-   * 응답이 배열/객체/문자열/숫자 등 무엇이든 상관없이 "원문(JSON 문자열)"로 안전하게 받는 호출. - 응답 구조가 유동적이거나, String.class로 받았다가
-   * Jackson 컨버터 때문에 깨지는 케이스에 사용
-   */
-  public ExternalCallResult<String> callRaw(
-      String url, HttpMethod method, Object body, HttpHeaders headers) {
-
-    HttpHeaders resolvedHeaders = resolveJsonHeaders(headers);
-    logRequestBody(body);
-
-    HttpEntity<Object> entity = new HttpEntity<>(body, resolvedHeaders);
-
-    try {
-      ResponseEntity<byte[]> res = restTemplate.exchange(url, method, entity, byte[].class);
-      String raw =
-          (res.getBody() == null) ? null : new String(res.getBody(), StandardCharsets.UTF_8);
-      return new ExternalCallResult<>(res.getStatusCodeValue(), true, raw, null);
     } catch (HttpStatusCodeException e) {
       return new ExternalCallResult<>(
           e.getStatusCode().value(), false, null, e.getResponseBodyAsString());
@@ -66,7 +57,6 @@ public class ExternalHttpClient {
   private HttpHeaders resolveJsonHeaders(HttpHeaders headers) {
     HttpHeaders h = (headers == null) ? new HttpHeaders() : headers;
 
-    // 이미 세팅돼 있으면 존중하고, 없으면 JSON 기본값 세팅
     if (h.getContentType() == null) {
       h.setContentType(MediaType.APPLICATION_JSON);
     }