diff --git a/docs/tasks/任务6-Sprint-1-注册接口实现.md b/docs/tasks/任务6-Sprint-1-注册接口实现.md
index 6ce7999..3e7f380 100644
--- a/docs/tasks/任务6-Sprint-1-注册接口实现.md
+++ b/docs/tasks/任务6-Sprint-1-注册接口实现.md
@@ -212,7 +212,10 @@ 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()));
+    // 检查用户名是否已存在,如果存在则抛出异常
+    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