RestTemplateConfig 수정, 추론실행 수정

src/main/java/com/kamco/cd/kamcoback/common/utils/NetUtils.java

@@ -5,11 +5,9 @@ import java.net.InetAddress;
 import java.net.URLEncoder;
 import java.net.UnknownHostException;
 import java.nio.charset.StandardCharsets;
-import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
 import org.springframework.http.HttpHeaders;
-import org.springframework.http.MediaType;
 
 public class NetUtils {
 
@@ -56,9 +54,8 @@ public class NetUtils {
 
   public HttpHeaders jsonHeaders() {
     HttpHeaders headers = new HttpHeaders();
-    headers.setContentType(MediaType.APPLICATION_JSON);
-    headers.setAccept(List.of(MediaType.APPLICATION_JSON));
-
+    headers.set(HttpHeaders.ACCEPT, "application/json;charset=UTF-8");
+    headers.set(HttpHeaders.CONTENT_TYPE, "application/json;charset=UTF-8");
     return headers;
   }
 }