HarmonyOS 网络请求application/x-www-form-urlencoded; charset=utf-8形式，传递参数，有代码示例吗

网络请求配置

export interface RequestOptions {
  //请求地址
  url?: string;
  //请求类型，post、get等
  method?: RequestMethod;
  //请求参数
  queryParams ?: Record<string, string>;
  //自定义请求头
  header?: Object;
  //是否显示loading
  showLoading?: boolean
  //加载完成是否关闭loading
  closeLoading?: boolean

}

export enum RequestMethod {
  OPTIONS = "OPTIONS",
  GET = "GET",
  HEAD = "HEAD",
  POST = "POST",
  PUT = "PUT",
  DELETE = "DELETE",
  TRACE = "TRACE",
  CONNECT = "CONNECT"
}