• 传递的参数顺序应该是：第一个是路径Url，第二个是参数data，第三个是header（个人理解）
• post请求

  getList(){
        let url='';
        let option4=[];
        url=this.$base_url + '/version/list';
        let criteria=JSON.stringify({id:this.form.region});
        this.$axios.post(url,criteria,{headers: {'Content-Type': 'application/json'}})
            .then(response => {
                this.option2=response.data.data;
            });
      }

get请求

return axios.get(url, {
  params: data,
  headers: {'yl-authorization': this.token}//设置header信息
}).then((res) => {
  this.plList = res.data;
  if (this.plList.length < this.size) {
     this.jiazai = '没有更多数据啦~~~'
  }else {
     this.jiazai = '点击加载更多'
  }
})

请求头Content-Type为’application/x-www-form-urlencoded‘

axios(){
		axios({
			url:'api/json.php',
			method: 'post',
			data: {n:1},
			headers:{
				'Content-Type':'application/x-www-form-urlencoded'
			}
			
		})
		.then(respanse=>{
			console.log(respanse.data);
		})
		}