测试项目(四):前后端数据连接

好家伙,

测试用的vue3项目寄了,这里用回vue2

在前端,我们用axios发起网络请求

1.vue2中安装axios

npm install axios -S

随后在main.js中

import Vue from 'vue'
import App from './App.vue'
import router from './router'

import axios from 'axios';

Vue.config.productionTip = false

new Vue({
  router,
  axios,
  render: h => h(App)
}).$mount('#app')

来到我们的组件页面中,

<template>
  <div class="about">
    <table>
      <tr>
        <td>编号</td>
        <td>图书名称</td>
        <td>作者</td>
      </tr>
      <tr v-for="item in books">
        <td>{{item.id}}</td>
        <td>{{item.name}}</td>
        <td>{{item.author}}</td>

      </tr>
    </table>
  </div>
</template>

<script>
// @ is an alias to /src

import axios from 'axios'

export default {
  name: 'Home',
  data() {
    return {
      msg: '没有数据了',
      books: [
        {
          id: 1,
          name: '好书',
          author: '好人'
        },
        {
          id: 1,
          name: '好书',
          author: '好人'
        },
      ]
    }
  },
  created() {
    const _this=this;
    axios({
      method: "get",
      url: "http://localhost:8011/mydb/getUsers",
    }).then(res => {
      // this.data = res.data /* 将拿到的值，赋值给data */
      _this.books=res.data;
    })


  }
}
</script>

将网络请求写到生命周期函数created中

  created() {
    const _this=this;
    axios({
      method: "get",
      url: "http://localhost:8011/mydb/getUsers",
    }).then(res => {
      // this.data = res.data /* 将拿到的值，赋值给data */
      _this.books=res.data;
    })
  }