code: public void finishJson(final Object... objs) {
          this.contentType = this.jsonContentType;
          if (this.recycleListener != null) this.output = objs;
          finish(request.getJsonConvert().convertTo(getBodyBufferSupplier(), objs));
      }
docs: 将对象以JSON格式输出
  
  @param objs 输出对象