diff --git a/ruoyi-framework/src/main/java/com/ruoyi/framework/config/MybatisPlusConfig.java b/ruoyi-framework/src/main/java/com/ruoyi/framework/config/MybatisPlusConfig.java
index ef9d683..be4b377 100644
--- a/ruoyi-framework/src/main/java/com/ruoyi/framework/config/MybatisPlusConfig.java
+++ b/ruoyi-framework/src/main/java/com/ruoyi/framework/config/MybatisPlusConfig.java
@@ -100,11 +100,17 @@ public class MybatisPlusConfig {
 
       @Override
       public Number nextId(Object entity) {
+        if(ObjUtil.isNull(entity)){
+          return IdUtils.nextDateIdLong(17);
+        }
         return IdUtils.nextDateIdLong(entity.getClass().getSimpleName(), 17);
       }
 
       @Override
       public String nextUUID(Object entity) {
+        if(ObjUtil.isNull(entity)){
+          return IdUtils.nextDateId(17);
+        }
         return IdUtils.nextDateId(entity.getClass().getSimpleName(), 17);
       }
     };