diff --git a/app/api/service/UserService.php b/app/api/service/UserService.php
index 094ea87..1a623fe 100644
--- a/app/api/service/UserService.php
+++ b/app/api/service/UserService.php
@@ -2,12 +2,13 @@
 declare (strict_types=1);
 namespace app\api\service;
 
-use app\api\model\User;
-use Lcobucci\JWT\Parser;
-use Lcobucci\JWT\Builder;
+use Lcobucci\JWT\Configuration;
 use Lcobucci\JWT\Signer\Hmac\Sha256;
 use Lcobucci\JWT\Signer\Key\InMemory;
-use Lcobucci\JWT\Token;
+use DateTimeImmutable;
+use Lcobucci\JWT\Token\Plain;
+use Lcobucci\JWT\Validation\RequiredConstraintsViolated;
+use Lcobucci\JWT\Validation\Constraint\SignedWith;
 /**
  * 用户表
  */