diff --git a/docs/tasks/任务7-Sprint-1-基于JWT的用户认证实现.md b/docs/tasks/任务7-Sprint-1-基于JWT的用户认证实现.md
index e9e6868..a22e6ce 100644
--- a/docs/tasks/任务7-Sprint-1-基于JWT的用户认证实现.md
+++ b/docs/tasks/任务7-Sprint-1-基于JWT的用户认证实现.md
@@ -696,7 +696,9 @@ public class AuthService {
      */
     public User register(RegisterRequest reg) {
         // 检查用户名是否已存在,如果存在则抛出异常
-        userRepository.findByUsername(reg.getUsername()).orElseThrow(() -> new ResourceExistedException("User","useranme="+reg.getUsername()));
+        userRepository.findByUsername(reg.getUsername()).ifPresent(user -> {
+            throw new ResourceExistedException("User","username="+reg.getUsername());
+        });
         // 创建用户对象并设置信息
         User user = new User();
         // 设置密码,暂时使用明文密码