HarmonyOS 关于rcp请求封装问题

我这边封装了rcp请求的一个公共方法返回如下

export async function commonRequest(){
  return request.post().then(async (response : rcp.Response) => {}).catch((err: BusinessError) => {})
}

在外面使用这个方法时候,then方法的response解析不出来undefined,如何传递呢

export function keyExchangeRequest() {
  let paramDict = new HashMap<string, string>()
  return commonRequest(RequestKeyID.RequestKeyGen, '504', '504', paramDict).then((response) => {
    console.info(`keyExchangeRequest Response succeeded: ${response}`);
  }).catch((err: BusinessError) => {
    console.error(`Err: Code is ${err.code}, message is ${err.message}`);
  });

}