老师好，请教一个问题

来源：7-1 创建控制器和装饰器

目訫

2020-11-07

import 'reflect-metadata'
import { Request, Response } from 'express'
import { controller, get } from "./Decorator";
import { getResponseData } from '../utils/utils';

interface BodyRequest extends Request {
  body: {
    [key: string]: string | undefined
  }
}

@controller
class LoginController {
  // @get('/logout')
  logout(req: BodyRequest, res: Response) {
    if (req.session) {
      req.session.login = undefined
    }
    res.json(getResponseData(true))
  }

  @get('/')
  home(req: BodyRequest, res: Response) {
    const isLogin = req.session ? req.session.login : undefined
    if (isLogin) {
      res.send(`
        <html>
          <body>
            <a href="/getData">爬取内容</a>
            <a href="/showData">展示内容</a>
            <a href="/logout">退出</a>
          </body>
        </html>
      `)
    } else {
      res.send(`
        <html>
          <body>
            <form method="post" action="/login">
              <input type="password" name="password" />
              <button>登陆</button>
            </form>
          </body>
        </html>
      `)
    }
  }
}

老师，login方法并没有使用装饰器，为什么还会打印出undefined

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