edit

lib/Base.php

@@ -251,6 +251,10 @@ class Base
 
     public function createUsername($uid, $username, $update = false)
     {
+        $user = Dever::db('passport/user')->one($uid);
+        if ($user && $user['username']) {
+            return $user['username'];
+        }
         if (!$username || $username == '临时用户') {
             $username = $uid + 100000;
             $username = 'JM' . $username;