fix(X-Pack): 定时报告-查询组件设置默认值对导出 Excel无效 #18491

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);
     }