diff --git a/sdk/common/src/main/java/io/dataease/utils/ServletUtils.java b/sdk/common/src/main/java/io/dataease/utils/ServletUtils.java
index 1c3dacd929..1273c5487a 100644
--- a/sdk/common/src/main/java/io/dataease/utils/ServletUtils.java
+++ b/sdk/common/src/main/java/io/dataease/utils/ServletUtils.java
@@ -26,6 +26,7 @@ public class ServletUtils {
 
     public static String getHead(String key) {
         HttpServletRequest request = request();
+        if (ObjectUtils.isEmpty(request)) return null;
         return request.getHeader(key);
     }