diff --git a/yudao-module-infra/src/main/resources/codegen/java/service/serviceImpl.vm b/yudao-module-infra/src/main/resources/codegen/java/service/serviceImpl.vm
index deb5e96..215fecb 100644
--- a/yudao-module-infra/src/main/resources/codegen/java/service/serviceImpl.vm
+++ b/yudao-module-infra/src/main/resources/codegen/java/service/serviceImpl.vm
@@ -112,7 +112,7 @@ public class ${table.className}ServiceImpl implements ${table.className}Service 
                 create${simpleClassName}(BeanUtils.toBean(importItem, ${saveReqVOClass}.class));
                 successCount.incrementAndGet();
             } catch (Exception ex) {
-                failureRows.put(currentIndex, ex.getMessage());
+                failureRows.put(currentIndex, resolveImportFailureMessage(ex));
             }
         });
         return ${sceneEnum.prefixClass}${table.className}ImportRespVO.builder()
@@ -122,6 +122,17 @@ public class ${table.className}ServiceImpl implements ${table.className}Service 
                 .build();
     }
 
+    /**
+     * 仅返回根因异常信息，避免把 MyBatis 长堆栈直接暴露给前端。
+     */
+    private String resolveImportFailureMessage(Exception ex) {
+        Throwable root = ex;
+        while (root.getCause() != null && root.getCause() != root) {
+            root = root.getCause();
+        }
+        return root.getMessage() != null ? root.getMessage() : ex.getMessage();
+    }
+
     @Override
 ## 特殊：主子表专属逻辑（非 ERP 模式）
 #if ( $subTables && $subTables.size() > 0 && $table.templateType != 11 )