fix(web): fix 401 unauthorized redirect not working properly (#997)

修复了token过期后页面一直遇到401错误、无法自动跳转登录页的问题

主要改动：
1. httpClient.ts
   - 去掉延迟跳转的setTimeout，改为立即跳转
   - 返回pending promise阻止SWR捕获401错误
   - 保存from401标记到sessionStorage，由登录页显示提示

2. LoginPage.tsx
   - 检测from401标记，显示"登录已过期"提示(永久显示)
   - 在登录成功时手动关闭过期提示toast
   - 支持管理员登录、普通登录、OTP验证三种场景

3. TraderConfigModal.tsx
   - 修复3处直接使用fetch()的问题，改为httpClient.get()
   - 确保所有API请求都经过统一的401拦截器

4. translations.ts
   - 添加sessionExpired的中英文翻译

修复效果：
- token过期时立即跳转登录页(无延迟)
- 登录页持续显示过期提示，直到用户登录成功或手动关闭
- 不会再看到401错误页面或重复的错误提示

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: tinkle-community <tinklefund@gmail.com>

web/src/components/LoginPage.tsx

@@ -1,4 +1,4 @@
-import React, { useState } from 'react'
+import React, { useState, useEffect } from 'react'
 import { useNavigate } from 'react-router-dom'
 import { useAuth } from '../contexts/AuthContext'
 import { useLanguage } from '../contexts/LanguageContext'
@@ -24,6 +24,18 @@ export function LoginPage() {
   const adminMode = false
   const { config: systemConfig } = useSystemConfig()
   const registrationEnabled = systemConfig?.registration_enabled !== false
+  const [expiredToastId, setExpiredToastId] = useState<string | number | null>(null)
+
+  // Show notification if user was redirected here due to 401
+  useEffect(() => {
+    if (sessionStorage.getItem('from401') === 'true') {
+      const id = toast.warning(t('sessionExpired', language), {
+        duration: Infinity // Keep showing until user dismisses or logs in
+      })
+      setExpiredToastId(id)
+      sessionStorage.removeItem('from401')
+    }
+  }, [language])
 
   const handleAdminLogin = async (e: React.FormEvent) => {
     e.preventDefault()
@@ -34,6 +46,11 @@ export function LoginPage() {
       const msg = result.message || t('loginFailed', language)
       setError(msg)
       toast.error(msg)
+    } else {
+      // Dismiss the "login expired" toast on successful login
+      if (expiredToastId) {
+        toast.dismiss(expiredToastId)
+      }
     }
     setLoading(false)
   }
@@ -49,6 +66,11 @@ export function LoginPage() {
       if (result.requiresOTP && result.userID) {
         setUserID(result.userID)
         setStep('otp')
+      } else {
+        // Dismiss the "login expired" toast on successful login (no OTP required)
+        if (expiredToastId) {
+          toast.dismiss(expiredToastId)
+        }
       }
     } else {
       const msg = result.message || t('loginFailed', language)
@@ -70,6 +92,11 @@ export function LoginPage() {
       const msg = result.message || t('verificationFailed', language)
       setError(msg)
       toast.error(msg)
+    } else {
+      // Dismiss the "login expired" toast on successful OTP verification
+      if (expiredToastId) {
+        toast.dismiss(expiredToastId)
+      }
     }
     // 成功的话AuthContext会自动处理登录状态
 

web/src/components/TraderConfigModal.tsx

@@ -4,6 +4,7 @@ import { useLanguage } from '../contexts/LanguageContext'
 import { t } from '../i18n/translations'
 import { toast } from 'sonner'
 import { Pencil, Plus, X as IconX } from 'lucide-react'
+import { httpClient } from '../lib/httpClient'
 
 // 提取下划线后面的名称部分
 function getShortName(fullName: string): string {
@@ -114,7 +115,7 @@ export function TraderConfigModal({
   useEffect(() => {
     const fetchConfig = async () => {
       try {
-        const response = await fetch('/api/config')
+        const response = await httpClient.get('/api/config')
         const config = await response.json()
         if (config.default_coins) {
           setAvailableCoins(config.default_coins)
@@ -140,7 +141,7 @@ export function TraderConfigModal({
   useEffect(() => {
     const fetchPromptTemplates = async () => {
       try {
-        const response = await fetch('/api/prompt-templates')
+        const response = await httpClient.get('/api/prompt-templates')
         const data = await response.json()
         if (data.templates) {
           setPromptTemplates(data.templates)
@@ -198,19 +199,13 @@ export function TraderConfigModal({
         throw new Error('未登录，请先登录')
       }
 
-      const response = await fetch(
+      const response = await httpClient.get(
         `/api/account?trader_id=${traderData.trader_id}`,
         {
-          headers: {
           Authorization: `Bearer ${token}`,
-          },
         }
       )
 
-      if (!response.ok) {
-        throw new Error('获取账户余额失败')
-      }
-
       const data = await response.json()
 
       // total_equity = 当前账户净值（包含未实现盈亏）

web/src/i18n/translations.ts

@@ -474,6 +474,7 @@ export const translations = {
     registrationFailed: 'Registration failed. Please try again.',
     verificationFailed:
       'OTP verification failed. Please check the code and try again.',
+    sessionExpired: 'Session expired, please login again',
     invalidCredentials: 'Invalid email or password',
     weak: 'Weak',
     medium: 'Medium',
@@ -1287,6 +1288,7 @@ export const translations = {
     loginFailed: '登录失败，请检查您的邮箱和密码。',
     registrationFailed: '注册失败，请重试。',
     verificationFailed: 'OTP 验证失败，请检查验证码后重试。',
+    sessionExpired: '登录已过期，请重新登录',
     invalidCredentials: '邮箱或密码错误',
     weak: '弱',
     medium: '中',

web/src/lib/httpClient.ts

@@ -6,10 +6,9 @@
  * - Automatic 401 token expiration handling
  * - Auth state cleanup on unauthorized
  * - Automatic redirect to login page
+ * - Notification shown on login page after redirect
  */
 
-import { toast } from 'sonner'
-
 export class HttpClient {
   // Singleton flag to prevent duplicate 401 handling
   private static isHandling401 = false
@@ -21,13 +20,6 @@ export class HttpClient {
     HttpClient.isHandling401 = false
   }
 
-  /**
-   * Show login required notification to user
-   */
-  private showLoginRequiredNotification(): void {
-    toast.warning('登录已过期，请先登录', { duration: 1800 })
-  }
-
   /**
    * Response interceptor - handles common HTTP errors
    *
@@ -53,11 +45,6 @@ export class HttpClient {
       // Notify global listeners (AuthContext will react to this)
       window.dispatchEvent(new Event('unauthorized'))
 
-      // Show user-friendly notification (only once)
-      this.showLoginRequiredNotification()
-
-      // Delay redirect to let user see the notification
-      setTimeout(() => {
       // Only redirect if not already on login page
       if (!window.location.pathname.includes('/login')) {
         // Save current location for post-login redirect
@@ -66,10 +53,16 @@ export class HttpClient {
           sessionStorage.setItem('returnUrl', returnUrl)
         }
 
+        // Mark that user came from 401 (login page will show notification)
+        sessionStorage.setItem('from401', 'true')
+
+        // Redirect immediately to login page
         window.location.href = '/login'
+
+        // Return pending promise to prevent error from being caught by SWR/React
+        // The notification will be shown on the login page
+        return new Promise(() => {}) as Promise<Response>
       }
-        // Note: No need to reset flag since we're redirecting
-      }, 1500) // 1.5秒延迟,让用户看到提示
 
       throw new Error('登录已过期，请重新登录')
     }