app.js

import Koa from 'koa'
import koaRouter from 'koa-router'
import json from 'koa-json'
import logger from 'koa-logger'

import path from 'path'
import serve from 'koa-static'
import historyApiFallback from 'koa2-history-api-fallback'
import koaBodyParser from 'koa-bodyparser'
import routesObj from './server/routes.js'

const app = new Koa()
const router = koaRouter()
app.use(koaBodyParser())
app.use(json())
app.use(logger())

const fs = require('fs')
function writeLog(data) {
  fs.appendFile('./log.txt', data, 'utf8', e => {})
}

app.use(async (ctx, next) => {
  const start = new Date()
  const result = await routesObj.verify(ctx)
  if (typeof result === 'object') {
    ctx.state.userInfo = result// 存储用户信息
    await next()
  } else {
    writeLog('【' + result + '】')
    ctx.body = {
      success: false,
      data: {},
      message: result
    }
  }
  const ms = new Date() - start
  writeLog(ctx.method + ' ' + ctx.url + ' ' + ms + 'ms \r\n')
  console.log('%s %s - %s', ctx.method, ctx.url, ms)
})

app.on('error', function (err, ctx) {
  writeLog('server error' + err + '\n' + JSON.stringify(ctx) + '\r\n')
  ctx.body = {
    success: false,
    data: ctx,
    message: err
  }
  console.log('server error', err)
})

router.use('/api', routesObj.routes.routes())

app.use(router.routes()) // 将路由规则挂载到Koa上。
app.use(historyApiFallback())
app.use(serve(path.resolve('dist'))) // 将webpack打包好的项目目录作为Koa静态文件服务的目录

app.listen(8000, () => {
  console.log('Koa is listening in 8000')
}).setTimeout(0)

export default app