更新获取访问令牌的逻辑，从localStorage中解析token，若不存在则返回默认值。

src/utils/auth.js

@@ -18,7 +18,7 @@ export function isLoggedIn() {
  */
 export function getAccessToken() {
   // return storage.get(AccessToken) || ''
-  return '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'
+  return JSON.parse(localStorage.getItem('token'))||'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'
 }
 
 /**