koa通過bodyparser無法獲取ctx.request.body,必須通過json轉(zhuǎn)換？

前端axios

this.$axios({
                method:'post',
                url:'/api/login',
                data : {         //使用json傳入
                  name : this.name,
                  password: this.password
                }

koa

const Koa = require('koa');
const app = new Koa();
const bodyParser = require('koa-bodyparser');
const router = require('./router/main')

app.use(bodyParser()) //處理POST 請求

app.use(router.routes());

app.use(router.allowedMethods())  //路由結(jié)束自動添加狀態(tài)等

app.listen(3000);

user.post('/login',async(ctx)=>{
  console.log("req.body = "+JSON.stringify(ctx.request.body))
  //輸出 {"name":"hqb","password":"123"}

  console.log("req.body = "+ctx.request.body)
   //輸出[object Object]

  ctx.body = 'LOGIN OK'