Vue简单封装axios之解决post请求后端接收不到参数问题

1.在src/下新建api文件夹，api/下新建index.js和public.js

在public.js中：

import axios from 'axios';import qs from 'qs'import router from '../router'import { MessageBox} from 'mint-ui'// 注意点,按照以下写var instance = axios.create();instance.defaults.timeout = 10000;instance.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded';export default {  fetchGet(url, params = {}) {    return new Promise((resolve, reject) => {      axios.get(url, params).then(res => {        if(res.data.code === 302) {          MessageBox('提示', '登录失效,请重新登录');          MessageBox.alert('登录失效,请重新登录', '提示').then(action => {              router.push("/login");          });        }        resolve(res.data);      }).catch(error => {        reject(error);      })    })  },  fetchPost(url, params = {}) {    /*     axios post请求后端接收不到参数问题：    解决方案一：有效，但是兼容性不是很好，不是所有浏览器都支持      let data = new URLSearchParams()      for (var key in params) {        data.append(key, params[key])      }    */    // 解决方案二：使用qs模块(axios中自带),使用qs.stringify()序列化params    return new Promise((resolve, reject) => {      axios.post(url, qs.stringify(params)).then(res => {        resolve(res.data);      }).catch(error => {        reject(error);      })    })  }}

2.在index.js中：

import http from './public'export const getStation = (params) => {  return http.fetchGet('/hydro/rest/getBelongUser', params);}export const userLogin = (params) => {  return http.fetchPost("/hydro/rest/login", params);}

3.在Login.vue中调用post请求方法:

<template>  <div class="login">    <h1>登录页面</h1>    <input type="text" placeholder="请输入用户名" v-model="Username">    <input type="password" placeholder="请输入密码" v-model="Password">    <input type="button" value="登录" @click="toLogin">  </div></template><script>import {userLogin} from "../../api/index"export default { name: 'app', data() {  return {   Username: "",   Password: ""  } }, methods: {  toLogin() {    let params = {      username: this.Username,      password: this.Password    };    userLogin(params).then(res => {      if(res.code === 200) {        this.$router.push("/home")      }    })  } }}</script>

#### 4.在Home.vue调用get请求方法

<template>  <h1 class="home">    {{stationName}}  </h1></template><script>import {getStation} from "../../api/index"export default {  data() {    return{      stationName: ""    }  },  created() {    getStation().then(res => {      this.stationName = res.msg;    })  }}</script>

总结