1. I read the configuration instructions of webpack, but I don"t know how to use
2. This is what I tried in index.

"use strict"
// Template version: 1.2.3
// see http://vuejs-templates.github.io/webpack for documentation.

const path = require("path")
var express = require("express")
var app = express()
var axios = require("axios")
var apiRoutes = express.Router()

    module.exports = {
      dev: {
        // Paths
        assetsSubDirectory: "static",
        assetsPublicPath: "/",
        proxyTable: { // 
          "/api": {
                    target: "https://c.y.qq.com/lyric/fcgi-bin/fcg_query_lyric_new.fcg",
                changeOrigin: true,
                pathRewrite: {
                 "^/api": ""
                }
          }
        },
        // Various Dev Server settings
        host: "localhost", // can be overwritten by process.env.HOST
        port: 8085, // can be overwritten by process.env.HOST, if port is in use, a free one will be determined
        autoOpenBrowser: true,
        errorOverlay: true,
        notifyOnErrors: true,
        poll: false, // https://webpack.js.org/configuration/dev-server/-sharpdevserver-watchoptions-
    
        // Use Eslint Loader?
        // If true, your code will be linted during bundling and
        // linting errors and warnings will be shown in the console.
        useEslint: true,
        // If true, eslint errors and warnings will also be shown in the error overlay
        // in the browser.
        showEslintErrorsInOverlay: false,
    
        /**
         * Source Maps
         */
    
        // https://webpack.js.org/configuration/devtool/-sharpdevelopment
        devtool: "eval-source-map",
    
        // If you have problems debugging vue-files in devtools,
        // set this to false - it *may* help
        // https://vue-loader.vuejs.org/en/options.html-sharpcachebusting
        cacheBusting: true,
    
        // CSS Sourcemaps off by default because relative paths are "buggy"
        // with this option, according to the CSS-Loader README
        // (https://github.com/webpack/css-loader-sharpsourcemaps)
        // In our experience, they generally work as expected,
        // just be aware of this issue when enabling this option.
        cssSourceMap: false,
        before(apiRoutes) {
          apiRoutes.get("/lyric", function (req, res) {
              var url = "https://c.y.qq.com/lyric/fcgi-bin/fcg_query_lyric_new.fcg"
              axios.get(url, {
                headers: {
                  referer: "https://c.y.qq.com/",
                  host: "c.y.qq.com"
                },
                params: req.query
              }).then((response) => {
                var ret = response.data
                if (typeof ret === "string") {
                    /* \w:    */
                  var reg = /^\w+\(({[^()]+})\)$/ /*==> MusicJsonCallback({\"retcode\":0,\"code\":0,\"subcode\...."})*/
                  var matches = ret.match(reg)
                  if (matches) {
                    ret = JSON.parse(matches[1])
                  }
                }
                res.json(ret)
              }).catch((e) => {
                console.log(e)
              })
            })
        },
        after(apiRoutes){
          apiRoutes.get("/lyric", function (req, res) {
              var url = "https://c.y.qq.com/lyric/fcgi-bin/fcg_query_lyric_new.fcg"
              axios.get(url, {
                headers: {
                  referer: "https://c.y.qq.com/",
                  host: "c.y.qq.com"
                },
                params: req.query
              }).then((response) => {
                var ret = response.data
                if (typeof ret === "string") {
                    /* \w:    */
                  var reg = /^\w+\(({[^()]+})\)$/ /*==> MusicJsonCallback({\"retcode\":0,\"code\":0,\"subcode\...."})*/
                  var matches = ret.match(reg)
                  if (matches) {
                    ret = JSON.parse(matches[1])
                  }
                }
                res.json(ret)
                console.log(res.json(ret))
              }).catch((e) => {
                console.log(e)
              })
            })
        }
      },

3,

    export function getLyric(mid) {
    
      const url = "/api/lyric"
    
      const data = Object.assign({}, commonParams, {
          g_tk: 5381,
        songmid: mid,
        platform: "yqq",
        hostUin: 0,
        needNewCode: 0,
        categoryId: 10000000,
        pcachetime: +new Date(),
        format: "json"
      })
    
      return axios.get(url, {
        params: data
      }).then((res) => {
        return Promise.resolve(res.data)
      })
    }

4. Destination address not found

5 afterbefore,proxy,Please help me! Thanks very much!