axios 发送并发请求

axios.all([
      axios({
            url:'',
            params:{}
	}),
      axios({
            url:'',
            params:{}
    })
]).then(res => {
    //res 是一个数组
    console.log(res);
	})
-------------------
axios.all([
      axios({
            url:'',
            params:{}
	}),
      axios({
        url:'',
        params:{}
    })
]).then(axios.spread((res1,res2) => {
     console.log(res1);
     console.log(res2);
}))