diff --git a/electron-vue-template/src/renderer/App.vue b/electron-vue-template/src/renderer/App.vue
index 73001b8..7a5b58f 100644
--- a/electron-vue-template/src/renderer/App.vue
+++ b/electron-vue-template/src/renderer/App.vue
@@ -109,21 +109,16 @@ function handleMenuSelect(key: string) {
   addToHistory(key)
 }
 
-async function handleLoginSuccess(data: { token: string; user: any }) {
+async function handleLoginSuccess(data: { token: string; permissions?: string }) {
   isAuthenticated.value = true
   showAuthDialog.value = false
 
   try {
-    currentUsername.value = data?.user?.username || currentUsername.value
-    userPermissions.value = data?.permissions || data?.user?.permissions || ''
-  } catch {}
-
-  // 登录成功后自动注册设备 - 简化版
-  try {
-    const username = data?.user?.username || currentUsername.value
-    if (username) {
+    const username = getUsernameFromToken(data.token)
+    currentUsername.value = username
+    userPermissions.value = data?.permissions || ''
+    // 登录成功后自动注册设备
       await deviceApi.register({ username })
-    }
   } catch (e) {
     // 设备注册失败不影响登录流程，静默处理
     console.warn('设备注册失败:', e)
@@ -205,11 +200,9 @@ function getClientIdFromToken(token?: string) {
 }
 
 function getUsernameFromToken(token?: string) {
-  try {
     const t = token || localStorage.getItem('token') || ''
     const payload = JSON.parse(atob(t.split('.')[1] || ''))
     return payload.username || ''
-  } catch { return '' }
 }
 
 async function openDeviceManager() {