Very practical code collection for vue2.0 projects

// main.js 入口js文件
 import VueRouter from 'vue-router'
 import NProgress from 'nprogress'Vue.use(VueRouter); //注册路由插件NProgress.configure({ showSpinner: false }); //进度条配置router.beforeEach((to, from, next) => {
  NProgress.start();
})
router.afterEach(transition => {
  NProgress.done();
});

router.beforeEach((to, from, next) => {//假设登陆成功后，user信息保存在sessionStorage中。
  if (to.path == '/login') {
    sessionStorage.removeItem('user');  //如果访问登录页，清空之前sessionStorage中的user信息
  }  let user = JSON.parse(sessionStorage.getItem('user'));  if (!user && to.path != '/login') {
    next({ path: '/login' })
  } else {
    next()
  }//如果访问非登陆页，判断是否有保存的user信息，如果没有，则判断为非法访问，重定向到登录页面})

<!--app.vue 根组件--><template>
  <div id="app">
        <transition name="fade" mode="out-in">
        <router-view></router-view>
        </transition>
    </div></template><script>
  export default {      name: &#39;app&#39;,    components: {}
  }</script><style>
    .fade-enter-active,.fade-leave-active {        transition: opacity .2s ease;
    }    .fade-enter,.fade-leave-active {        opacity: 0;
    }</style>

//router.jsimport a from 'a.vue' import a from 'b.vue' import a from 'c.vue' import a from 'main.vue' let routes = [
  {   path: '/login',   component: a,   name: 'a'},{     path: '/',     component: main,     name: '数据中心',     iconCls: 'iconfont icon-shuju', //假装有个icon图标
     children: [
            { path: '/main/b', component: b, name: 'b' },
            { path: '/main/c', component: c, name: 'c' },
        ]
    },
]export default routes;//main.js 入口js文件import routes from './routes
const router = new VueRouter({
  mode: 'history',
  routes
})
new Vue({
  el: '#app',
  template: &#39;<App/>&#39;,
  router,
  components: { App }
}).$mount(&#39;#app&#39;)

//menus.js  属于vuex模块export default {  '0': 'all',  '2': 'breast',  '3': 'leg',  '4': 'face',  '5': 'others',  '6': 'buttocks',  '7': 'stockings'}//router.js 路由文件import menus from '../store/menus'; //引入const getRouters = () => {  return Object.keys(menus).map(key => {    return {      path: `/${menus[key]}/:page(\\d+)?`,      component: createListView(Number(key))
    }
  })
}export default new Router({  mode: 'history',  routes: [
        { path: 'a', component: a },
    ...getRouters()
  ]
})

//filters.js 过滤器文件export function formatDateTime (date) {    //格式化时间戳
  var y = date.getFullYear()  var m = date.getMonth() + 1
  m = m < 10 ? (&#39;0&#39; + m) : m  var d = date.getDate()
  d = d < 10 ? (&#39;0&#39; + d) : d  var h = date.getHours()  var minute = date.getMinutes()
  minute = minute < 10 ? (&#39;0&#39; + minute) : minute  return y + &#39;-&#39; + m + &#39;-&#39; + d + &#39; &#39; + h + &#39;:&#39; + minute
}export function test (a) {   return `${a}aaaa`}
......//main.js 入口js文件import Vue from &#39;vue&#39;import * as filters from &#39;./filters&#39;Object.keys(filters).forEach(key => {
  Vue.filter(key, filters[key])
})

// http request 拦截器axios.interceptors.request.use(    config => {        if (store.state.token) {  // 判断是否存在token，如果存在的话，则每个http header都加上token
            config.headers.Authorization = `token ${store.state.token}`;
        }        return config;
    },
    err => {        return Promise.reject(err);
    });// http response 拦截器axios.interceptors.response.use(    response => {        return response;
    },
    error => {        if (error.response) {            switch (error.response.status) {                case 401:                    // 返回 401 清除token信息并跳转到登录页面
                    store.commit(types.LOGOUT);
                    router.replace({                        path: 'login',                        query: {redirect: router.currentRoute.fullPath}
                    })
            }
        }        return Promise.reject(error.response.data)   // 返回接口返回的错误信息
    });

Vue.http.interceptors.push((request, next) => {
　console.log(this)//此处this为请求所在页面的Vue实例
  // modify request
  request.method = 'POST';//在请求之前可以进行一些预处理和配置
  // continue to next interceptor　　next((response) => {//在响应之后传给then之前对response进行修改和逻辑判断。对于token时候已过期的判断，就添加在此处，页面中任何一次http请求都会先调用此处方法
    　response.body = '...';
　　　　return response;
  });
});