用户导入过滤空行

@@ -330,6 +330,7 @@ class User extends Backend
                 }
                 $row = [];
                 $temp = array_combine($fields, $values);
+                $temp = array_filter($temp); //过滤空行
                 foreach ($temp as $k => $v) {
                     if (isset($fieldArr[$k]) && $k !== '') {
                         $row[$fieldArr[$k]] = $v;