code: protected void preOperation(AipRequest request) {
          if (needAuth()) {
              getAccessToken(config);
          }
  
          request.setHttpMethod(HttpMethodName.POST);
          request.addHeader(Headers.CONTENT_TYPE, HttpContentType.FORM_URLENCODE_DATA);
          request.addHeader("accept", "*/*");
          request.setConfig(config);
      }
docs: /*
  为DEV创建的用户填充body