diff --git a/server/src/main/java/edp/core/config/CaffeineCacheConfig.java b/server/src/main/java/edp/core/config/CaffeineCacheConfig.java
index 34bda8101423b3772c2491ca49a40585ffc440e2..a36444c0f6a43c8afee8855157aa552fdfe75554 100644
--- a/server/src/main/java/edp/core/config/CaffeineCacheConfig.java
+++ b/server/src/main/java/edp/core/config/CaffeineCacheConfig.java
@@ -61,7 +61,9 @@ public class CaffeineCacheConfig {
         return (o, method, params) -> {
             StringBuilder sb = new StringBuilder();
             for (Object obj : params) {
-                sb.append(obj.toString());
+                if(Objects.nonNull(obj)){
+                    sb.append(obj.toString());
+                }                
             }
             return MD5Util.getMD5(sb.toString(), false, 32);
         };