req.params无法拿到foodname和price

来源：11-57 【泛型递归+复杂泛型交叉类型综合实战】跨越式的提高复杂泛型运用能力

crazyones110

2021-10-08

import { router } from '../util/router'
import MethodType from '../util/methodtype'
import { RequestHandler } from 'express'
// 枚举

type MyClassDecorator = <T extends { new(...args: any): any }>
  (targetClass: T) => any
export function Controller(reqRootPath: string): MyClassDecorator {
  return function (targetClass): any {
    console.log("控制器装饰器执行...");
    for (let methodname in targetClass.prototype) {
      let routerpath = Reflect.getMetadata("path", targetClass.prototype, methodname) // S100 这一行里routerpath是any类型啊
      let methodType: MethodType = Reflect.getMetadata("methodType", targetClass.prototype, methodname)
      const targetMethodfunc: RequestHandler = targetClass.prototype[methodname];

      let middleawres: RequestHandler[] = Reflect.getMetadata("middleawares",
        targetClass.prototype, methodname)

      if (routerpath && methodType) {
        if (middleawres) {
          router[methodType](routerpath, ...middleawres, targetMethodfunc) // S101 也就是说这里routerpath传进去的是any类型, 根本不可能推断出来req.params类型的
        } else {
          router[methodType](routerpath, targetMethodfunc)
        }
      }
    }
  }
}