#鸿蒙通关秘籍#可以详细说明一下如何在HarmonyOS Next中实现请求拦截器来附加Token吗？

instance.interceptors.request.use(async (config) => {
  // 从 PreferencesUtils 中异步获取 token
  const token = await PreferencesUtils.get("token");
  if (token) {
    config.headers['Authorization'] = "Bearer " + token;
    config.headers['System-id'] = "3";
  }
  return config;
}, (error) => {
  return Promise.reject(error);
});
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