vue的axios封装

import axios2 from "axios";
import Vue from "vue";
async function http2(options,withLoading = true) {
    options.headers = {Authorization:sessionStorage.getItem('token')};
    if (withLoading) Vue.prototype.$weiLoading.open(); //开启loading
    await new Promise(resolve => setTimeout(resolve,500));
    return axios2(options)
        .then(res => {
            if (res.status === 200) {
                let result = res.data;
                switch (result.code) {
                    case 200:
                        if (withLoading)Vue.prototype.$weiLoading.close();
                        return result.data;
                    case 199:
                    case 500:
                    case 401:
                        sessionStorage.removeItem('token');
                        sessionStorage.removeItem('name');
                        if (!sessionStorage.removeItem('token')) {
                            // Vue.prototype.$weiLoginAlert();
                            // Vue.prototype.$weiAlert('登录已过期');
                        }
                    case 404:
                        throw new Error(result.msg); // 有错，显示抛出异常直达下面的catch
                }
            } else {
                throw new Error(res.statusText);
            }
        })
        .catch(function (error) {
           if (withLoading) Vue.prototype.$weiLoading.close();
            // Vue.prototype.$weiAlert('登录已过期');
            return Promise.reject(error.message);
        })
}
export default http2;