import Vue from 'vue';
const requireComponent = require.context(
'.',true,/\.vue$/
//找到components文件夹下以.vue命名的文件
)
requireComponent.keys().forEach(fileName => {
const componetConfig = requireComponent(fileName);
let a = fileName.lastIndexOf('/');
const componetName = componetConfig.default.name
Vue.component(componetName,componetConfig.default || componetConfig)
})