text: module.exports = function (app) {
      require('./home')(app); //主页
      require('./login')(app); //登录
      require('./logout')(app); //登出
      require('./register')(app); //注册
      require('./cart')(app); //购物车
      require('./book')(app); // 书籍详情页
      require('./list')(app); //书籍分类
      require('./help')(app);
      require('./search')(app);
      require('./admin')(app); //后台管理
  };