diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/ContractManager.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/ContractManager.java
index a2e397cc..a57c5964 100644
--- a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/ContractManager.java
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/ContractManager.java
@@ -23,7 +23,7 @@ import cn.axzo.nanopart.ess.server.dao.EssContractDao;
 import cn.axzo.nanopart.ess.server.dao.EssLogDao;
 import cn.axzo.nanopart.ess.server.entity.EssContract;
 import cn.axzo.nanopart.ess.server.entity.EssPerson;
-import cn.axzo.nanopart.ess.server.ess.domain.JsonObjectAsString;
+import cn.axzo.nanopart.ess.server.ess.domain.StringObject;
 import cn.axzo.nanopart.ess.server.ess.mq.EssBroadcaster;
 import cn.axzo.nanopart.ess.server.ess.support.ContractSupport;
 import cn.axzo.nanopart.ess.server.utils.BizAssertions;
@@ -64,7 +64,7 @@ public class ContractManager {
 			EssPerson superAdmin = orgManager.getSuperAdminOrThrow(request.getCreator().getOuId());
 			List<String> essFileIds = essClient.uploadDocument(superAdmin, request.getByFile().getBase64Files());
 			ChannelCreateFlowByFilesResponse essResponse = essClient.createContractByFile(superAdmin, essFileIds,
-				request.getByFile(), JsonObjectAsString.create().put(CONTRACT_ID, contract.getId()).toString());
+				request.getByFile(), StringObject.create().put(CONTRACT_ID, contract.getId()).toString());
 			List<String> essRecipientIds = Arrays.stream(essResponse.getApprovers()) //
 					.map(ApproverItem::getRecipientId) //
 					.collect(toList());
diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/controller/CallbackController.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/controller/CallbackController.java
index 9c355e1f..6ed9cf26 100644
--- a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/controller/CallbackController.java
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/controller/CallbackController.java
@@ -43,7 +43,7 @@ import cn.axzo.nanopart.ess.server.entity.EssSealPerson;
 import cn.axzo.nanopart.ess.server.ess.ContractManager;
 import cn.axzo.nanopart.ess.server.ess.EssService;
 import cn.axzo.nanopart.ess.server.ess.OrgManager;
-import cn.axzo.nanopart.ess.server.ess.domain.JsonObjectAsString;
+import cn.axzo.nanopart.ess.server.ess.domain.StringObject;
 import cn.axzo.nanopart.ess.server.ess.domain.OrgOpenId;
 import cn.axzo.nanopart.ess.server.ess.domain.PersonOpenId;
 import cn.axzo.nanopart.ess.server.ess.support.EssSupport;
@@ -183,7 +183,7 @@ class CallbackController implements EssCallbackApi, InitializingBean {
 			}).collect(toList());
 			EssContract contract = essContractDao.findOrNull(changes.getFlowId());
 			if (contract == null && StringUtils.isNotBlank(changes.getCustomerData())) {
-				JSONObject customData = JsonObjectAsString.parse(changes.getCustomerData()).asJsonObject();
+				JSONObject customData = StringObject.parse(changes.getCustomerData()).asJsonObject();
 				contract = essContractDao.getById(customData.getLong(ContractManager.CONTRACT_ID));
 			}
 			if (contract == null) {
diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/domain/JsonObjectAsString.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/domain/StringObject.java
similarity index 58%
rename from ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/domain/JsonObjectAsString.java
rename to ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/domain/StringObject.java
index 35994928..fc202ae6 100644
--- a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/domain/JsonObjectAsString.java
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/domain/StringObject.java
@@ -9,23 +9,23 @@ import lombok.RequiredArgsConstructor;
  * @author yanglin
  */
 @RequiredArgsConstructor(access = AccessLevel.PRIVATE)
-public class JsonObjectAsString {
+public class StringObject {
 
 	private final JSONObject obj;
 
-	public static JsonObjectAsString create() {
-		return new JsonObjectAsString(new JSONObject());
+	public static StringObject create() {
+		return new StringObject(new JSONObject());
 	}
 
-	public static JsonObjectAsString parse(String jsonStr) {
-		return new JsonObjectAsString(JSONObject.parseObject(jsonStr));
+	public static StringObject parse(String jsonStr) {
+		return new StringObject(JSONObject.parseObject(jsonStr));
 	}
 
 	public JSONObject asJsonObject() {
 		return obj;
 	}
 
-	public JsonObjectAsString put(String key, Object value) {
+	public StringObject put(String key, Object value) {
 		obj.put(key, value);
 		return this;
 	}