Vue3全局挂载使用Axios学习实战

import Vue from 'vue'
import router from '@/router'
import store from '@vuex'
import Axios from 'axios'
import Utils from '@/tool/utils'
import App from './App.vue'
// ...
/* 挂载全局对象 start */
Vue.prototype.$http = Axios;
Vue.prototype.$utils = Utils;
/* 挂载全局对象 end */
new Vue({
  router,
  store,
  render: h => h(App)
}).$mount('#app')

import { createApp } from 'vue'
import router from './router'
import store from './store'
import Axios from 'axios'
import Utils from '@/tool/utils'
import App from './App.vue'
// ...
const app = createApp(App)
/* 挂载全局对象 start */
app.config.globalProperties.$http = Axios
app.config.globalProperties.$utils = Utils
/* 挂载全局对象 end */
app.use(router).use(store);
app.mount('#app')

<script>
  export default {
    data() {
      return {
        list: []
      }
    },
    mounted() {
      this.getList()
    },
    methods: {
      getList() {
        this.$http({
          url: '/api/v1/posts/list'
        }).then(res=>{
          let { data } = res.data
          this.list = data
        })
      },
    },
  }
</script>

<template>
  <div class="box"></div>
</template>
<script>
  import { ref, reactive, getCurrentInstance } from 'vue'
  export default {
    setup(props, cxt) {
      // 方法一 start
      const currentInstance = getCurrentInstance()
      const { $http, $message, $route } = currentInstance.appContext.config.globalProperties
      function getList() {
        $http({
          url: '/api/v1/posts/list'
        }).then(res=>{
          let { data } = res.data
          console.log(data)
        })
      }
      // 方法一 end
      // 方法二 start
      const { proxy } = getCurrentInstance()
      function getData() {
        proxy.$http({
          url: '/api/v1/posts/list'
        }).then(res=>{
          let { data } = res.data
          console.log(data)
        })
      }
      // 方法二 end
    }  
  }
</script>