React开发（278）:ant design message res保证正确信息提示

 callback: (res) => {
        console.log(res, 'res');
        if (res === true) {
          message.success('操作成功');
          this.props.dispatch({
            type: 'lecturer/updateState',
            payload: { selectedRowKeys: [] },
          });
          this.sendSearchRequest();
        } else {
          message.error(res.returnMsg);
        }
      },