axios和fetch的封装

axios

import axios from 'axios';
import qs from 'qs';
/* 全局默认 */
switch (process.env.NODE_ENV) {
    case 'production':
        axios.defaults.baseURL = "api.abcdef.com";
        break;
    case 'test':
        axios.defaults.baseURL = "192.168.20.21";
        break;
    default:
        axios.defaults.baseURL = "127.0.0.1"
}

/* 超时时间 */
axios.defaults.timeout = 10000;
/* 允许携带凭证 */
axios.defaults.withCredentials = true;
/* 传递数据格式(假设urlencode) */
axios.defaults.headers['Content-Type'] = 'application/x-www-urlencoded';
axios.defaults.transformRequest = data => {
    qs.stringify(data);
};
/* 请求拦截器 */
axios.interceptors.request.use(config => {
    const token = localStorage.getItem('token');
    config.headers.Authorization = token;
    return config;
}, err => {
    return Promise.reject(err);
})
/* 响应拦截器 */
axios.defaults.validateStatus = status => {
    return /^(2|3)d{2}$/.test(status);
}
axios.interceptors.response.use(res => {
    return res.data;
}, err => {
    let { response } = err;
    if (response) {
        // 根据状态码返回结果
        switch (response.status) {
            case 401:
                //...
                break;
            case 403:
                //...
                break;
            case 404:
                //...
                break;
        }
    } else {
        /* 没网 */
        if (!window.navigator.onLine) {
            //跳转到断网页面
            return;
        } else {
            return Promise.reject(err);
        }
    }
})

export default axios;

fetch

import qs from 'qs';

let baseURL = '';
switch (process.env.NODE_ENV) {
    case 'production':
        baseURL = "api.abcdef.com"
        break;
    case 'test':
        baseURL = "192.168.0.0.1";
        break;
    default:
        baseURL = "127.0.0.1";
        break;
}

export default (url, options = {}) => {
    url = baseURL + url;
    !options.method ? options.method = 'GET' : null;
    // params处理
    if (options.hasOwnProperty('params')) {
        if (/^(GET|DELETE|HEAD|OPTIONS)$/i.test(options.params)) {
            const ask = url.includes('?') ? '&' : '?';
            url + `${ask}${qs.stringify(params)}`;
        }
        delete options.params;
    }
    //合并配置
    options = Object.assign({
        credentials: 'include',//资源凭证
        headers: {}
    }, options);
    options.headers.Accept = "application/json";
    //token校验
    const token = localStorage.getItem('token');
    options.headers.Authorization = token;
    //post请求
    if (/^(POST|PUT)$/i.test(options.method)) {
        !options.type ? options.type = 'urlencoded' : null;
        if (options.type === 'urlencoded') {
            options.headers['Content-Type'] = 'application/x-www-urlencoded';
            options.body = qs.stringify(options.body);
        }
        else if (options.type === 'json') {
            options.headers['Content-Type'] = 'application/json';
            options.body = JSON.stringify(options.body);
        }
        //...
    }
    // fetch
    return fetch(url, options).then(res => {
        /* 非200状态码 */
        if (!/^(2|3)d{2}$/.test(res.status)) {
            switch (res.status) {
                case 401:
                    //...
                    break;
                case 404:
                    //...
                    break;
                default:
                    //...
                    break;
            }
            return Promise.reject(res);
        }
        return res.json();
    }).catch(err => {
        if (!window.navigator.onLine) {
            return;
        }
        return Promise.reject(err);
    })
}