src/main/java/com/kamco/cd/kamcoback/config/resttemplate/RestTemplateConfig.java

@@ -1,13 +1,11 @@
 package com.kamco.cd.kamcoback.config.resttemplate;
 
-import java.nio.charset.StandardCharsets;
 import lombok.extern.log4j.Log4j2;
 import org.springframework.boot.web.client.RestTemplateBuilder;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.http.client.BufferingClientHttpRequestFactory;
 import org.springframework.http.client.SimpleClientHttpRequestFactory;
-import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
 import org.springframework.web.client.RestTemplate;
 
 @Log4j2
@@ -20,13 +18,16 @@ public class RestTemplateConfig {
     baseFactory.setConnectTimeout(2000);
     baseFactory.setReadTimeout(3000);
 
-    MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter();
-    jsonConverter.setDefaultCharset(StandardCharsets.UTF_8);
+    RestTemplate rt =
+        builder
+            .requestFactory(() -> new BufferingClientHttpRequestFactory(baseFactory))
+            .additionalInterceptors(new RetryInterceptor())
+            .build();
 
-    return builder
-        .requestFactory(() -> new BufferingClientHttpRequestFactory(baseFactory))
-        .messageConverters(jsonConverter)
-        .additionalInterceptors(new RetryInterceptor())
-        .build();
+    // byte[] 응답은 무조건 raw로 읽게 강제 (Jackson이 끼어들 여지 제거)
+    rt.getMessageConverters()
+        .add(0, new org.springframework.http.converter.ByteArrayHttpMessageConverter());
+
+    return rt;
   }
 }