合同编号为空时正则校验修改

@@ -178,9 +178,15 @@ class BaseController extends Controller
             $params = str_replace('brandShowName[]', 'brandShowName{}', $params);
         }
 
-        $pattern = '/"signContract"\s*:\s*\[\s*\]/';
-        $replacement = '"signContract":{}';
-        $params = preg_replace($pattern, $replacement, $params);
+        $patterns = [
+            '/"signContract"\s*:\s*\[\s*\]/',
+            '/signContract\[\]/'
+        ];
+        $replacements = [
+            '"signContract":{}',
+            'signContract{}'
+        ];
+        $params = preg_replace($patterns, $replacements, $params);
 
         //2.去除特殊字符
         $params = $this->removeSpecialCharacter($params);