1.main.js

import { createApp} from 'vue'
import App from './App.vue'
import router from './router'
import store from './store'
import ElementPlus from 'element-plus'
import 'element-plus/dist/index.css'
import axios from 'axios'
const app = createApp(App);
app.config.globalProperties.$axios = axios
app.use(store).use(ElementPlus).use(router).mount('#app');

2.使用

go(){
            var _this = this
            this.$axios({
              method: 'post',
              url: '/api/xxx/xxx/xxxx.do',
              params: {
                start: "0",
                pageSize: "10",
             
              }
            }).then(function (response) {
               _this.msg = response.data.message;
              })
              .catch(function (error) {
                console.log(error);
              });
            
        }