自动注册 router 目录中的js文件为对应的路由, 免除在app.js中不停的添加 router 的问题

app.js

 const express = require("express");
 const apicache = require("apicache");
 const path = require("path");
-
+const fs = require("fs");
 const app = express();
 let cache = apicache.middleware;
 
@@ -32,263 +32,37 @@ app.use(function(req, res, next) {
   next();
 });
 
-// 获取专辑内容
-app.use("/album", require("./router/album"));
-
-// 获取歌手单曲
-app.use("/artists", require("./router/artists"));
-
-// 获取歌手专辑列表
-app.use("/artist/album", require("./router/artist_album"));
-
-//艺术家-信息
-app.use("/artist/desc", require("./router/artist_desc"));
-
-//艺术家-mv
-app.use("/artist/mv", require("./router/artist_mv"));
-
-// 收藏歌手
-app.use("/artist/sub", require("./router/artist_sub"));
-
-// 取消收藏歌手
-app.use("/artist/unsub", require("./router/artist_unsub"));
-
-// 已关注歌手
-app.use("/artist/sublist", require("./router/artist_sublist"));
-
-// 歌手分类
-app.use("/artist/list", require("./router/artist_list"));
-
-// 获取 banner
-app.use("/banner", require("./router/banner"));
-
-app.use("/check/music", require("./router/check_music"));
-
-app.use("/comment/music", require("./router/comment_music"));
-
-app.use("/comment/mv", require("./router/comment_mv"));
-
-app.use("/comment/album", require("./router/comment_album"));
-
-app.use("/comment/playlist", require("./router/comment_playlist"));
-
-//未知 api
-app.use("/comment/like", require("./router/comment_like"));
-
-app.use("/comment/dj", require("./router/comment_dj"));
-
-//签到
-app.use("/daily_signin", require("./router/daily_signin"));
-
-//djradio detail
-app.use("/dj/detail", require("./router/dj_detail"));
-
-//dj主播 radio
-app.use("/dj/program", require("./router/dj_program"));
-
-app.use("/dj/program/detail", require("./router/dj_program_detail"));
-
-app.use("/dj/sub", require("./router/dj_sub"));
-
-app.use("/dj/catelist", require("./router/dj_catelist"));
-
-app.use("/dj/hot", require("./router/dj_hot"));
-
-app.use("/dj/sublist", require("./router/dj_sublist"));
-
-// 精选电台
-app.use("/dj/recommend", require("./router/dj_recommend"));
-
-//精选电台-分类电台
-app.use("/dj/recommend/type", require("./router/dj_recommend_type"));
-
-//获取动态
-app.use("/event", require("./router/event"));
-
-//垃圾桶
-app.use("/fm_trash", require("./router/fm_trash"));
-
-app.use("/follow", require("./router/follow"));
-
-// 喜欢歌曲
-app.use("/like", require("./router/like"));
-
-app.use("/likelist", require("./router/likelist"));
-
-//手机登录
-app.use("/login/cellphone", require("./router/loginCellphone"));
-
-//邮箱登录
-app.use("/login", require("./router/login"));
-
-//登录刷新
-app.use("/login/refresh", require("./router/login_refresh"));
-
-// 不明 api
-app.use("/log/web", require("./router/logWeb"));
-
-// 获取歌词
-app.use("/lyric", require("./router/lyric"));
-
-// 获取音乐 url
-app.use("/music/url", require("./router/musicUrl"));
-
-//最新 mv
-app.use("/mv/first", require("./router/mv_first"));
-
-//播放 mv
-app.use("/mv/url", require("./router/mv_url"));
-
-//mv
-app.use("/mv", require("./router/mv"));
-
-// 私人 FM
-app.use("/personal_fm", require("./router/personal_fm"));
-
-//推荐歌单
-app.use("/personalized", require("./router/personalized"));
-
-//推荐dj
-app.use("/personalized/djprogram", require("./router/personalized_djprogram"));
-
-//推荐新音乐
-app.use("/personalized/newsong", require("./router/personalized_newsong"));
-
-//独家放送
-app.use(
-  "/personalized/privatecontent",
-  require("./router/personalized_privatecontent")
-);
-
-//推荐mv
-app.use("/personalized/mv", require("./router/personalized_mv"));
-
-// 获取歌单内列表
-app.use("/playlist/detail", require("./router/playlist_detail"));
-
-//收藏单曲到歌单,从歌单删除歌曲 op=del,add;pid=歌单id,tracks=歌曲id
-app.use("/playlist/tracks", require("./router/playlist_tracks"));
-
-// 热门歌单分类
-app.use("/playlist/hot", require("./router/playlist_hot"));
-
-// 全部歌单分类
-app.use("/playlist/catlist", require("./router/playlist_catlist"));
-
-// 新建歌单
-app.use("/playlist/create", require("./router/playlist_create"));
-
-// 收藏/取消收藏歌单
-app.use("/playlist/subscribe", require("./router/playlist_subscribe"));
-
-//推荐节目
-app.use("/program/recommend", require("./router/program_recommend"));
-
-// 获取每日推荐歌曲
-app.use("/recommend/songs", require("./router/recommend_songs"));
-
-// 获取每日推荐歌单
-app.use("/recommend/resource", require("./router/recommend_resource"));
-
-//取消推荐
-app.use("/recommend/dislike", require("./router/recommend_dislike"));
-
-app.use("/resource/like", require("./router/resource_like"));
-
-// 搜索
-app.use("/search", require("./router/search"));
-
-// 热搜
-app.use("/search/hot", require("./router/search_hot.js"));
-
-//搜索 multimatch
-app.use("/search/multimatch", require("./router/search_multimatch"));
-
-// 搜索 suggest,搜索结果包含单曲,歌手,歌单,mv信息
-app.use("/search/suggest", require("./router/search_suggest"));
-
-//simi ,相似歌单
-app.use("/simi/playlist", require("./router/simi_playlist"));
-
-//simi ,相似歌曲
-app.use("/simi/song", require("./router/simi_song"));
-
-//相似 mv
-app.use("/simi/mv", require("./router/simi_mv"));
-
-//simi ,相似关注的用户
-app.use("/simi/user", require("./router/simi_user"));
-
-//相似歌手
-app.use("/simi/artist", require("./router/simi_artist"));
-
-// 获取音乐详情
-app.use("/song/detail", require("./router/song_detail"));
-
-// 新碟上架 http://music.163.com/#/discover/album/
-app.use("/top/album", require("./router/top_album"));
-
-// 热门歌手 http://music.163.com/#/discover/artist/
-app.use("/top/artists", require("./router/top_artists"));
-
-app.use("/top/list", require("./router/top_list"));
-
-app.use("/top/mv", require("./router/top_mv"));
-
-//分类歌单
-app.use("/top/playlist", require("./router/top_playlist"));
-
-//精品歌单
-app.use(
-  "/top/playlist/highquality",
-  require("./router/top_playlist_highquality")
-);
-
-app.use("/top/song", require("./router/top_song"));
-
-app.use("/toplist", require("./router/toplist"));
-
-app.use("/toplist/artist", require("./router/toplist_artist"));
-
-app.use("/toplist/detail", require("./router/toplist_detail"));
-
-// 获取用户歌单
-app.use("/user/playlist", require("./router/user_playlist"));
-
-// 获取用户电台
-app.use("/user/audio", require("./router/user_audio"));
-
-//云盘数据
-app.use("/user/cloud", require("./router/user_cloud"));
-
-//云盘数据详情? 暂时不要使用
-app.use("/user/cloud/search", require("./router/user_cloud_search"));
-//用户动态
-app.use("/user/event", require("./router/user_event"));
-
-app.use("/user/detail", require("./router/user_detail"));
-
-app.use("/user/dj", require("./router/user_dj"));
-
-app.use("/user/followeds", require("./router/user_followeds"));
-
-app.use("/user/follows", require("./router/user_follows"));
-
-app.use("/user/subcount", require("./router/user_subcount"));
-
-app.use("/user/record", require("./router/user_record"));
-
-app.use("/user/update", require("./router/user_update"));
-
-app.use("/send/text", require("./router/send_text"));
-
-app.use("/send/playlist", require("./router/send_playlist"));
-
-app.use("/playlist/create", require("./router/playlist_create"));
+// 因为这几个文件对外所注册的路由 和 其他文件对外注册的路由规则不一样, 所以专门写个MAP对这些文件做特殊处理
+const UnusualRouteFileMap = {
+  // key 为文件名, value 为对外注册的路由
+  "daily_signin.js": "/daily_signin",
+  "fm_trash.js": "/fm_trash",
+  "personal_fm.js": "/personal_fm"
+};
+
+// 同步读取 router 目录中的js文件, 根据命名规则, 自动注册路由
+fs.readdirSync("./router/").forEach(file => {
+  if (/\.js$/i.test(file) === false) {
+    return;
+  }
 
-app.use("/playlist/subscribe", require("./router/playlist_subscribe"));
+  let route;
+
+  if (typeof UnusualRouteFileMap[file] !== "undefined") {
+    route = UnusualRouteFileMap[file];
+  } else {
+    route =
+      "/" +
+      file
+        .replace(/\.js$/i, "")
+        .replace(/_/g, "/")
+        .replace(/[A-Z]/g, a => {
+          return "/" + a.toLowerCase();
+        });
+  }
 
-app.use("/playlist/update", require("./router/playlist_update"));
+  app.use(route, require("./router/" + file));
+});
 
 const port = process.env.PORT || 3000;