오류 수정

2026-01-30 06:46:03 [http-nio-17811-exec-3] ERROR c.b.d.a.l.service.ListenerService - com.bsmlab.dfx.agent.support.exception.IllegalMessageException: json 메시지를 파싱할 수 없습니다.String value length (20054016) exceeds the maximum allowed (20000000, from `StreamReadConstraints.getMaxStringLength()`)
 - 500MB 이하 수신 가능하도록 수정

src/main/java/com/bsmlab/dfx/agent/support/MessageUtils.java

@@ -8,7 +8,10 @@ import com.bsmlab.dfx.agent.listener.dto.ReceiveMessageDto;
 import com.bsmlab.dfx.agent.support.exception.IllegalMessageException;
 import com.bsmlab.dfx.agent.support.exception.InCompleteMessageException;
 import com.bsmlab.dfx.agent.support.exception.NullMessageException;
+import com.fasterxml.jackson.core.JsonFactory;
+import com.fasterxml.jackson.core.JsonFactoryBuilder;
 import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.StreamReadConstraints;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.extern.slf4j.Slf4j;
@@ -23,7 +26,12 @@ import java.util.*;
 
 @Slf4j
 public class MessageUtils {
-    private static final ObjectMapper objectMapper = new ObjectMapper();
+    private static final ObjectMapper objectMapper;
+    static {
+        StreamReadConstraints constraints = StreamReadConstraints.builder().maxStringLength(500_000_000).build();
+        JsonFactory jsonFactory = new JsonFactoryBuilder().streamReadConstraints(constraints).build();
+        objectMapper = new ObjectMapper(jsonFactory);
+    }
 
     private MessageUtils() {};