记录-如何优雅的使用koa-router进行404拦截

// app.ts
import koa from 'koa'
import { router } from './routers'

const app = new koa()

app.use(router.routes())

app.listen(5024, () => {
  console.log('短连接服务启动完成：5024')
})

// ./routers/index.ts
import Router from 'koa-router'
import { BaseRouter } from './base'
import { ConfigRouter } from './config'

// 装载所有子路由
let router = new Router()
router.use('', BaseRouter.routes())
router.use('/config', ConfigRouter.routes())

export { router }

// ./routers/base.ts
import Router from 'koa-router'

const router = new Router()

router.get('/(.*)', async (_ctx, next) => {
  try {
    await next()
  } catch (error: any) {
    _ctx.body = error?.message || '500'
    _ctx.status = 500
  }
})
router.get('/(.*)', async (_ctx, next) => {
  await next()
  if (!_ctx.body) {
    _ctx.body = '404'
    _ctx.status = 404
  }
})

export { router as BaseRouter }

// ./routers/config.ts
import Router from 'koa-router'
// import { getConfig } from '../controllers'

const router = new Router()

router.get('/', async (ctx, _next) => {
  ctx.body = 'config'
})
router.get('/:id', async (ctx, _next) => {
  ctx.body = ctx.params.id
})

export { router as ConfigRouter }