diff --git a/library/think/Model.php b/library/think/Model.php
index ebeffbb4..b38778ab 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -508,7 +508,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                 $value = json_decode($value, true);
                 break;
             case 'array':
-                $value = is_null($value) ? [] : json_decode($value, true);
+                $value = empty($value) ? [] : json_decode($value, true);
                 break;
             case 'object':
                 $value = empty($value) ? new \stdClass() : json_decode($value);
diff --git a/library/think/Route.php b/library/think/Route.php
index cf640a4a..1d599a2d 100644
--- a/library/think/Route.php
+++ b/library/think/Route.php
@@ -1281,9 +1281,6 @@ class Route
         } elseif (strpos($url, '/')) {
             // [模块/控制器/操作]
             $path = explode('/', $url);
-        } elseif (false !== strpos($url, '=')) {
-            // 参数1=值1&参数2=值2...
-            parse_str($url, $var);
         } else {
             $path = [$url];
         }
diff --git a/library/think/db/Builder.php b/library/think/db/Builder.php
index 56665527..5097016d 100644
--- a/library/think/db/Builder.php
+++ b/library/think/db/Builder.php
@@ -379,7 +379,7 @@ abstract class Builder
                 } else {
                     $zone = implode(',', $this->parseValue($value, $field));
                 }
-                $whereStr .= $key . ' ' . $exp . ' (' . $zone . ')';
+                $whereStr .= $key . ' ' . $exp . ' (' . (empty($zone) ? "''" : $zone) . ')';
             }
         } elseif (in_array($exp, ['NOT BETWEEN', 'BETWEEN'])) {
             // BETWEEN 查询