增加获取歌曲详情接口

router/songDetail.js

@@ -0,0 +1,19 @@
+const express = require("express")
+const router = express()
+const { createRequest } = require("../util/util")
+
+router.get("/", (req, res) => {
+  const ids = req.query.ids
+  console.log(ids)
+  createRequest(`http://music.163.com/api/song/detail?ids=%5B${ids}%5D`, 'GET', null)
+    .then(result => {
+      res.setHeader("Content-Type", "application/json")
+      res.send(result)
+    })
+    .catch(err => {
+      res.status(502).send('fetch error')
+    })
+})
+
+
+module.exports = router