From 30610aa5df7e95a51273bf72d12040924a69a475 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E6=98=A0=E6=B1=9F?=
 <15547749+cyj-050209@user.noreply.gitee.com>
Date: Thu, 9 Oct 2025 01:20:53 +0800
Subject: [PATCH] =?UTF-8?q?=E8=8E=B7=E5=8F=96=E7=94=A8=E6=88=B7=E5=AF=B9?=
 =?UTF-8?q?=E8=B1=A1?=
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---
 src/main/java/mathlearning/service/UserService.java | 5 +++++
 src/main/java/mathlearning/ui/LoginFrame.java       | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/main/java/mathlearning/service/UserService.java b/src/main/java/mathlearning/service/UserService.java
index f239562..37b4de9 100644
--- a/src/main/java/mathlearning/service/UserService.java
+++ b/src/main/java/mathlearning/service/UserService.java
@@ -172,4 +172,9 @@ public class UserService {
     public boolean isValidEmail(String email) {
         return email.matches("^[A-Za-z0-9+_.-]+@(.+)$");
     }
+
+    public User getUser(String email ) {
+        User user = users.get(email);
+        return user;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/mathlearning/ui/LoginFrame.java b/src/main/java/mathlearning/ui/LoginFrame.java
index a9579d0..7d1c365 100644
--- a/src/main/java/mathlearning/ui/LoginFrame.java
+++ b/src/main/java/mathlearning/ui/LoginFrame.java
@@ -102,10 +102,10 @@ public class LoginFrame extends JFrame{
     }
 
     private void openMainFrame(String email) {
-
+        User user = userService.getUser(email);
         // 这里先简单显示一个消息，后续可以扩展为主界面
         JOptionPane.showMessageDialog(this,
-                "欢迎 " + email + "!\n登录成功，主界面功能待实现。",
+                "欢迎 " + user.getUsername() + "!\n登录成功，主界面功能待实现。",
                 "登录成功", JOptionPane.INFORMATION_MESSAGE);
     }
 }