本文旨在说明 设置全局异常拦截器

当网络错误时候返回前端的提示，

当网络正常的时候返回后端的提示

export default ({
development: {
baseURL: ‘http://localhost:3000’
},
production: {
baseURL: ‘http://localhost:3000’
}
})[process.env.NODE_ENV]

//将引入axios库单独保存一个文件中
//2:引入axios库
import axios from “axios”

import env from ‘@/env’
//4:设置请求基础路径
axios.defaults.baseURL = env.baseURL

//全局响应拦截器，方便前台数据解析无需每个res.data
axios.interceptors.response.use(response => {
return Promise.resolve(response.data)
}, error => {
return Promise.reject(new Error(
error.response ? error.response.data : ‘网络错误’
))
})

//3:发送请求时保存session信息
axios.defaults.withCredentials=true

export default axios

import Vue from ‘vue’
import ‘vueui-widgets/dist/index.css’
import VueUI from ‘vueui-widgets’
import App from ‘./App.vue’
import router from ‘./router’
import store from ‘./store’
import axios from ‘./axios’
Vue.prototype.axios = axios
Vue.use(VueUI)

Vue.config.productionTip = false

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