Vue中使用axios以及axios的请求封装(以移动端vant为例)

一、项目安装vant

二、执行命令安装axios   (npm install axios)

三、封装请求(将以下最终生成的js放在api文件夹下面的axios.js中,文件夹和js都是自己建立的,api的文件夹在src下面))

  1、两个方法,一个是请求之前的拦截,一个是响应后的拦截,请求之前的拦截器中可以向里面添加token,请求之后的拦截可以对返回code的值做处理,比如token过期跳转登录等等

// http request拦截器 添加一个请求拦截器
axios.interceptors.request.use(function (config) {
    let token = window.localStorage.getItem("token")
    if (token) {
        //将token放到请求头发送给服务器,将tokenkey放在请求头中
        config.headers.token = token;
        //也可以这种写法
        // config.headers['token'] = token;
    }
  return config;
}, function (error) { Toast.fail('请求超时'); // Do something with request error return Promise.reject(error); });

  

// 添加一个响应拦截器
axios.interceptors.response.use(function (response) {
    if (response.data && response.data.code) {
        if (response.data.message === 'token失效' || response.data.message === '请求头中没有token') {
            //未登录
            Toast.fail("登录信息已失效,请重新登录");
            router.push('/login');
        }
        if (parseInt(response.data.code) === -1) {
            Toast.fail("请求失败");
        }
    }
    return response;
}, function (error) {
    Toast.fail("服务器连接失败");
    return Promise.reject(error);
})

    2、接下来将axios的请求方法封装一下(这里说明一下,vue中会将所有的请求都默认在当前域名下)

let base = '';

//通用方法
export const POST = (url, params) => {
    const getTimestamp = new Date().getTime();
    return axios.post(`${base}${url}?timer=${getTimestamp}`, params).then(res => res.data)
}

export const GET = (url, params) => {
    const getTimestamp = new Date().getTime();
    return axios.get(`${base}${url}?timer=${getTimestamp}`, { params: params }).then(res => res.data)
}

export const PUT = (url, params) => {
    return axios.put(`${base}${url}`, params).then(res => res.data)
}

export const DELETE = (url, params) => {
    return axios.delete(`${base}${url}`, { params: params }).then(res => res.data)
}

export const PATCH = (url, params) => {
    return axios.patch(`${base}${url}`, params).then(res => res.data)
}

  3、将以上所有内容整理一下,建立axios.js文件,js完整内容如下

import axios from 'axios'
import router from '../router/index'
import { Toast } from 'vant';

let token = '';

axios.defaults.withCredentials = false;
axios.defaults.headers.common['token'] = token;
axios.defaults.headers.post['Content-Type'] = 'application/json;charset=UTF-8';//配置请求头

// http request拦截器 添加一个请求拦截器
axios.interceptors.request.use(function (config) {
    let token = window.localStorage.getItem("token")
    if (token) {
        //将token放到请求头发送给服务器,将tokenkey放在请求头中
        config.headers.token = token;
        //也可以这种写法
        // config.headers['token'] = token;
    }
 return config;
}, function (error) {
    Toast.fail('请求超时');
    // Do something with request error
    return Promise.reject(error);
});

// 添加一个响应拦截器
axios.interceptors.response.use(function (response) {
    if (response.data && response.data.code) {
        if (response.data.message === 'token失效' || response.data.message === '请求头中没有token') {
            //未登录
            Toast.fail("登录信息已失效,请重新登录");
            router.push('/login');
        }
        if (parseInt(response.data.code) === -1) {
            Toast.fail("请求失败");
        }
    }
    return response;
}, function (error) {
    Toast.fail("服务器连接失败");
    return Promise.reject(error);
})

let base = '';

//通用方法
export const POST = (url, params) => {
    const getTimestamp = new Date().getTime();
    return axios.post(`${base}${url}?timer=${getTimestamp}`, params).then(res => res.data)
}

export const GET = (url, params) => {
    const getTimestamp = new Date().getTime();
    return axios.get(`${base}${url}?timer=${getTimestamp}`, { params: params }).then(res => res.data)
}

export const PUT = (url, params) => {
    return axios.put(`${base}${url}`, params).then(res => res.data)
}

export const DELETE = (url, params) => {
    return axios.delete(`${base}${url}`, { params: params }).then(res => res.data)
}

export const PATCH = (url, params) => {
    return axios.patch(`${base}${url}`, params).then(res => res.data)
}

  

  三、在main,js中讲以上封装的方法挂载在vue的原型链上,方面后面调用

  

import Vue from "vue";
import App from "./App.vue";
import router from "./router";
import store from "./store";
import "./plugins/vant.js";

import {POST} from './api/axios';
import {GET} from './api/axios';

Vue.prototype.postRequest = POST;
Vue.prototype.getRequest = GET;

Vue.config.productionTip = false;

new Vue({
  router,
  store,
  render: h => h(App)
}).$mount("#app");

  四、以上工作完成之后在页面中可这么调用

  post请求

  this.postRequest(url,param).then(res => {})

  get请求

  this.getRequest(url,param).then(res => {})

  

 

posted @ 2020-03-05 16:17  杰_森  阅读(3942)  评论(1编辑  收藏  举报