1.在根目录下添加vue.config.js 和 uni.less

2.编辑vue.config.js

let path = require('path');
let stylePath = path.resolve(__dirname, 'uni.less') 
module.exports = {
	css: {
		loaderOptions: {
			less: {
				globalVars: {
					"hack": `true; @import "${stylePath}"`
				}
			}
		}
	},
}

3.完成配置即可在页面中编写less ， 语言选择less

<style scoped lang="less">
@import url("fenlei.less");
</style>