diff --git a/src/main/java/com/eactive/eai/adapter/service/DJBApiAdapterService.java b/src/main/java/com/eactive/eai/adapter/service/DJBApiAdapterService.java
index 3f06499..74fe8ac 100644
--- a/src/main/java/com/eactive/eai/adapter/service/DJBApiAdapterService.java
+++ b/src/main/java/com/eactive/eai/adapter/service/DJBApiAdapterService.java
@@ -26,7 +26,6 @@ import org.dom4j.Element;
 import org.dom4j.Node;
 import org.dom4j.io.OutputFormat;
 import org.dom4j.io.XMLWriter;
-import org.json.simple.JSONObject;
 import org.json.simple.JSONValue;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpMethod;
@@ -46,7 +45,6 @@ import com.eactive.eai.common.context.ElinkTransactionContext;
 import com.eactive.eai.common.exception.ExceptionUtil;
 import com.eactive.eai.common.message.MessageType;
 import com.eactive.eai.common.util.CommonLib;
-import com.eactive.eai.common.util.JSONUtils;
 import com.eactive.eai.common.util.JacksonUtil;
 import com.eactive.eai.common.util.Logger;
 import com.eactive.eai.common.util.TxFileLogger;
@@ -55,6 +53,7 @@ import com.eactive.eai.inbound.action.ActionFactory;
 import com.eactive.eai.inbound.action.RequestAction;
 import com.eactive.eai.inbound.processor.Processor;
 import com.eactive.eai.message.StandardMessageUtil;
+import com.eactive.eai.util.JsonPathUtil;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.node.ObjectNode;
@@ -306,48 +305,17 @@ public class DJBApiAdapterService extends HttpAdapterServiceSupport {
 
 
         adptMsgType = adapterVO.getAdapterGroupVO().getMessageType();
-//        HttpHeaders responseHeaders = new HttpHeaders();
-//        responseHeaders.setContentType(MediaType.valueOf("application/json;charset=" + encode));
-
-        // HEADER_GROUP 셋팅
-//        if (MessageType.JSON.equals(adptMsgType) && StringUtils.isNotBlank(headerGroupName)
-//                && StringUtils.isNotBlank(relayRequestHeaderKeys)) {
-//            JSONObject jsonMessage = (JSONObject) JSONValue.parse(message);
-//            JSONObject headerJson = new JSONObject();
-//            if (StringUtils.equalsIgnoreCase(relayRequestHeaderKeys, "ALL")) {
-//                for (Enumeration<String> e = request.getHeaderNames(); e.hasMoreElements(); ) {
-//                    String key = e.nextElement();
-//                    headerJson.put(key, request.getHeader(key));
-//                }
-//            } else {
-//                String[] relayKeyArr = org.springframework.util.StringUtils
-//                        .tokenizeToStringArray(relayRequestHeaderKeys, ",");
-//
-//                for (String key : relayKeyArr) {
-//                    String headerValue = request.getHeader(key);
-//                    if (StringUtils.isNotBlank(headerValue)) {
-//                        headerJson.put(key, headerValue);
-//                    }
-//                }
-//            }
-//            
-//            if (headerJson.size() > 0) {
-//                jsonMessage.put(headerGroupName, headerJson);
-//                message = jsonMessage.toJSONString();
-//            }
-//        }
         
         Object reqObject = assignHeaderGroupRequestHeaders(adptGrpName, adptName, message,
         		transactionProp, request, response, adptMsgType);
 
         // 위치변경 : 가공되지 않은 Body값을 저장하기 위하여 위쪽으로 이동.
 //        transactionProp.put(INBOUND_REQUEST_MESSAGE, message);
-        // 로컬 서비스 호출 ,encoding 처리 추가
         
         ApiKeyExtractFilter apiKeyExtractor = new ApiKeyExtractFilter();
-        apiKeyExtractor.doPreFilter(adptGrpName, adptName, reqObject, transactionProp, request, response);
+        apiKeyExtractor.doPreFilter(adptGrpName, adptName, transactionProp.get(INBOUND_REQUEST_MESSAGE), transactionProp, request, response);
         
-        String result = (String) service(adptGrpName, adptName, reqObject, transactionProp, request, response);
+        Object result = service(adptGrpName, adptName, reqObject, transactionProp, request, response);
         
 		// bypass만 필요
         applyOutboundResponseHeaders(transactionProp, response);
@@ -361,9 +329,9 @@ public class DJBApiAdapterService extends HttpAdapterServiceSupport {
         stopWatch.stop();
 
         String syncAsyncType = transactionProp.getProperty(INBOUND_SYNC_ASYNC_TYPE);
-
+        
         if (!"ASYN".equals(syncAsyncType) && MessageType.JSON.equals(adptMsgType) && StringUtils.isNotBlank(headerGroupName)) {
-        	ObjectNode rootNode = (ObjectNode) mapper.readTree(result);
+        	ObjectNode rootNode = (ObjectNode) JacksonUtil.readTree(result, mapper);
         	JsonNode headerGroup = rootNode.get(headerGroupName);
         	if(headerGroup != null) {
         		for(Iterator<String> it = headerGroup.fieldNames(); it.hasNext();) {
@@ -372,23 +340,22 @@ public class DJBApiAdapterService extends HttpAdapterServiceSupport {
     				response.addHeader(name, value);
         		}
         		rootNode.remove(headerGroupName);
-        		result = mapper.writeValueAsString(rootNode);
+        		result = rootNode;
         	}
         }
-                        
-        // KJBank는 요청에 대한 응답 (Sync응답, Aync 에 대한 Ack응답) 에 대하여 암호화 하지 않는다. 무조건 안한다. 따라서 아래부분은 구현은 했지만 사용하지 않는다.   
-        // 위 2가지 경우 암호화 하는걸로 요청 변경되어 아래 암호화 수행하도록 수정함
-//    	encryptResponseApply = StringUtils.equalsIgnoreCase(httpProp.getProperty("ENCRYPT_RESPONSE_APPLY", "N"), "Y");
-//		if ( encryptResponseApply)  {
-//			result = doPostEncryption(result, transactionProp, request);   // jwhong Encrypt
-//		}
         
-        return result;
+        String strResult = null;
+        if(result instanceof JsonNode)
+        	strResult = OBJECT_MAPPER.writeValueAsString(result);
+        else
+        	strResult = (String) result;
+        
+        return strResult;
     }
 
 
 	private Object assignHeaderGroupRequestHeaders(String adptGrpName, String adptName, Object message, Properties prop,
-			HttpServletRequest request, HttpServletResponse response, String adptMsgType) throws DocumentException, IOException {
+			HttpServletRequest request, HttpServletResponse response, String adptMsgType) throws DocumentException, IOException, Exception {
 		// XML 지원 개발
 		String headerGroupName = prop.getProperty(HEADER_GROUP);
 		String relayRequestHeaderKeys = prop.getProperty(HEADER_KEYS);
@@ -397,31 +364,37 @@ public class DJBApiAdapterService extends HttpAdapterServiceSupport {
 				if(message instanceof String && StringUtils.isEmpty((String)message))
 					message = "{}";
 				
-				JSONObject jsonMessage = JSONUtils.parseJson(message);
-				JSONObject headerJson = JSONUtils.getChildJson(jsonMessage, headerGroupName);
-				if (headerJson == null) 
-					headerJson = new JSONObject();
-				
-				if (StringUtils.equalsIgnoreCase(relayRequestHeaderKeys, "ALL")) {
-					for (Enumeration<String> e = request.getHeaderNames(); e.hasMoreElements(); ) {
-						String key = e.nextElement();
-						headerJson.put(StringUtils.lowerCase(key), request.getHeader(key));
-					}
-				} else {
-					String[] relayKeyArr = org.springframework.util.StringUtils
-							.tokenizeToStringArray(relayRequestHeaderKeys, ",");
+				JsonNode jsonMessageNode = JacksonUtil.readTree(message, mapper);
+				if (jsonMessageNode == null || !jsonMessageNode.isObject()) {
+				    jsonMessageNode = OBJECT_MAPPER.createObjectNode();
+				}
+				ObjectNode jsonNode = (ObjectNode) jsonMessageNode;
 
-					for (String key : relayKeyArr) {
-						String headerValue = request.getHeader(key);
-						if (StringUtils.isNotBlank(headerValue)) {
-							headerJson.put(StringUtils.lowerCase(key), headerValue);
-						}
-					}
+				JsonNode childNode = jsonNode.get(headerGroupName);
+				ObjectNode headerJson = (childNode != null && childNode.isObject())
+				        ? (ObjectNode) childNode
+				        : OBJECT_MAPPER.createObjectNode();
+
+				if (StringUtils.equalsIgnoreCase(relayRequestHeaderKeys, "ALL")) {
+				    for (Enumeration<String> e = request.getHeaderNames(); e.hasMoreElements(); ) {
+				        String key = e.nextElement();
+				        headerJson.put(StringUtils.lowerCase(key), request.getHeader(key));
+				    }
+				} else {
+				    String[] relayKeyArr = org.springframework.util.StringUtils
+				            .tokenizeToStringArray(relayRequestHeaderKeys, ",");
+
+				    for (String key : relayKeyArr) {
+				        String headerValue = request.getHeader(key);
+				        if (StringUtils.isNotBlank(headerValue)) {
+				            headerJson.put(StringUtils.lowerCase(key), headerValue);
+				        }
+				    }
 				}
 
-				if (headerJson.size() > 0) {
-					jsonMessage.put(headerGroupName, headerJson);
-					message = jsonMessage.toJSONString();
+				if (!headerJson.isEmpty()) {
+				    jsonNode.set(headerGroupName, headerJson);
+				    message = jsonNode;
 				}
 			} else if(MessageType.XML.equals(adptMsgType)) {
             	Document document = XMLUtils.convertXmlDocument(message);
@@ -536,7 +509,7 @@ public class DJBApiAdapterService extends HttpAdapterServiceSupport {
         }
     }
 
-    private String applyHeaderGroupResponseHeaders(String adptGrpName, String adptName, Object resultMessage, Properties prop,
+    private Object applyHeaderGroupResponseHeaders(String adptGrpName, String adptName, Object resultMessage, Properties prop,
 			HttpServletRequest request, HttpServletResponse response, String adptMsgType) throws Exception {
 		// body headergroup -> http header 세팅
 		String headerGroupName = prop.getProperty(HEADER_GROUP);
@@ -589,7 +562,7 @@ public class DJBApiAdapterService extends HttpAdapterServiceSupport {
 				}
 
 				((ObjectNode) jsonNode).remove(headerGroupName);
-				return jsonNode.toString();
+				return jsonNode;
         	} else if(MessageType.XML.equals(adptMsgType)) {
         		Document document = XMLUtils.convertXmlDocument(resultMessage);
             	if(document != null) {