public void getAndSaveSongInfo(Document doc, String mid, String id) { ArrayList<String> SongInfo = null; sInfo = new SongInfo(); sInfo.id = id; if (!crawledSongs.contains(mid)) { crawledSongs.add(mid); sInfo.mid = mid; if (doc != null) { String sname = doc.select("div.song_title").select("span").text(); sInfo.sname = sname; SongInfo = extractSongInfo(doc); } else { System.err.println("The html is not fetched!"); } if (SongInfo != null && SongInfo.size() > 0) { sInfo.singer = SongInfo.get(0); sInfo.language = SongInfo.get(1); sInfo.album = SongInfo.get(2); sInfo.date = SongInfo.get(3); } sDao.insertSongInfo(sInfo); sDao.updateSongInfo(sInfo.mid, id); } crawledSongs.add(mid); }