HarmonyOS http网络访问，参数问题

//public.ts 
export default class  Response { 
  /** 
   * 响应码 
   */ 
  code:number 
  /** 
   * 响应消息 
   */ 
  message:string 
  /** 
   * 响应数据 
   */ 
  data:any 
} 
 
//http_request.ts 导入请求  
import http from '@ohos.net.http'; 
//响应格式 
import Response from './public' 
//导出去一个请求函数 使用axios风格请求数据、参数可自行增加 
export function request(url:string,method: http.RequestMethod,data?:any): Promise<Response> { 
  const BASE_URL =  "url" 
  // const BASE_URL =  "http://api.common.smallfeiyu.cn" 
  let httpRequest = http.createHttp(); 
  let responseResult = httpRequest.request( BASE_URL+ url,{ 
    method: method, 
    //请求头设置 
    header: { 
      'Content-Type': 'application/x-www-form-urlencoded' 
    }, 
    //携带额外参数 
    extraData: JSON.stringify(data), 
  }); 
 
  let response = new Response(); 
  // 处理数据，并返回 
  return responseResult.then((result: http.HttpResponse) => { 
    if (result.responseCode === 200) { 
      let res: Response = JSON.parse(`${result.result}`); 
      response.data = res.data; 
      response.code = res.code; 
      response.message = res.message; 
    } else { 
      response.message = '请求错误'; 
      response.code = 400; 
    } 
    return response; 
  }).catch((error) => { 
    response.message = '请求错误'; 
    response.code = 400; 
    return response; 
  }); 
}