让axios发送表单请求形式的键值对post数据的实例

npm install --save axios vue-axios qs

//载入axios
import Qs from 'qs'
import axios from 'axios'
import VueAxios from 'vue-axios'
var axios_instance = axios.create({
 baseURL:'http://localhost',
 transformRequest: [function (data) {
  data = Qs.stringify(data);
  return data;
 }],
 headers:{'Content-Type':'application/x--form-urlencoded'}
})
Vue.use(VueAxios, axios_instance)

this.$http.post('url', {
  id:1
}).then(response => {
  console.log(response)
}).catch( error => {  
  console.log(error);
});