/**
  * 主题颜色
  *
  * @param url
  * @return
  */
 @RequestMapping("color")
 public String color(String url) {
   return String.format("var cont = '%s';", musicService.color(url).replace("'", "\\'"));
 }
 /**
  * 歌曲详情
  *
  * @param id
  * @param callback
  * @return
  */
 @RequestMapping("song")
 public String getSongInfo(String id, String callback) {
   Song song = musicService.song(id);
   return String.format("%s(%s)", callback, JSON.toJSONString(song));
 }
 /**
  * 歌词
  *
  * @param lrc 歌曲ID
  * @return
  */
 @RequestMapping("lyric")
 public String lyric(String lrc) {
   String lyric = musicService.lyric(lrc) + "''";
   return String.format("var cont = '%s';", lyric.replace("'", "\\'"));
 }
 /**
  * 歌单列表
  *
  * @param ids
  * @return
  */
 @RequestMapping("playlist")
 public String getPlayList(String ids) {
   List<PlayList> playLists = musicService.playLists(ids.split(",|\\|"));
   return String.format("var wenkmList = %s", JSON.toJSONString(playLists));
 }