diff --git a/jianshui-common/src/main/java/com/jianshui/common/utils/JsonKeyCase.java b/jianshui-common/src/main/java/com/jianshui/common/utils/JsonKeyCase.java
index 20f9ce9..ab9717c 100644
--- a/jianshui-common/src/main/java/com/jianshui/common/utils/JsonKeyCase.java
+++ b/jianshui-common/src/main/java/com/jianshui/common/utils/JsonKeyCase.java
@@ -28,7 +28,7 @@ public class JsonKeyCase {
 
             Object value = data.get(key);
 
-            String name = value.getClass().getName();
+            String name = value != null ? value.getClass().getName() : "";
 
             if (name.endsWith(Constants.JSONObject)){