[Python]代码    

#!/usr/bin/python  # -*- coding: utf-8 -*-  '''   百度中批量下载某歌手的歌(目前只下载第一页，可以自行拓展)   @author:admin   @qq: 1243385033  '''  import threading, urllib2, os,re,sys  from bs4 import BeautifulSoup  from Queue import Queue    '''目标歌手'''  SINGER = u'亚东'  '''保存路径'''  SAVE_FOLDER = 'F:/music/'  # 查询url  search_url = "http://music.baidu.com/search/song?key=%s&s=1"  # 百度音乐播放盒url  song_url = "http://box.zhangmen.baidu.com/x?op=12&count=1&mtype=1&title="    class Downloader(threading.Thread):            def __init__(self, task):          threading.Thread.__init__(self)          self.task = task                def run(self):          '''覆盖父类的run方法'''          while True:              url = self.task.get()              self.download(url)              self.task.task_done()                    def build_path(self, filename):          join = os.path.join          parentPath=join(SAVE_FOLDER,SINGER)          filename = filename + '.mp3'          myPath = join(parentPath, filename)          return myPath                              def download(self, url):          '''下载文件'''          sub_url = url.items()          f_name = sub_url[0][0]          req_url = sub_url[0][1]          handle = urllib2.urlopen(req_url)          # 保存路径          save_path = self.build_path(f_name)          with open(save_path, "wb") as handler:              while True:                  chunk = handle.read(1024)                  if not chunk:                      break                  handler.write(chunk)                  msg = u"已经从  %s下载完成" % req_url              sys.stdout.write(msg)              sys.stdout.flush()        class HttpRequest:            def __init__(self):          self.task = []          self.reg_decode = re.compile('<decode>.*?CDATA\[(.*?)\]].*?</decode>')          self.reg_encode = re.compile('<encode>.*?CDATA\[(.*?)\]].*?</encode>')          self.init()          self.target_url = search_url % urllib2.quote(self.encode2utf8(SINGER))            def encode2utf8(self,source):          if source and isinstance(source,(str,unicode)):              source=source.encode("utf8")              return source          return source            def mkDir(self, dir_name):          if not os.path.exists(dir_name):              os.mkdir(dir_name)        def init(self):          self.mkDir(SAVE_FOLDER)          subPath = os.path.join(SAVE_FOLDER, SINGER)          self.mkDir(subPath)                        def http_request(self):          global song_url          '''发起请求'''          response=urllib2.urlopen(self.target_url)          # 获取头信息          content = response.read()          response.close()          # 使用BeautifulSoup          html = BeautifulSoup(content, from_encoding="utf8")          # 提取HTML标签          span_tag = html.find_all('div', {"monkey":"song-list"})[0].find_all('span', class_='song-title')              # 遍历List          for a_tag in span_tag:              song_name = unicode(a_tag.find_all("a")[0].get_text())              song_url = song_url + urllib2.quote(self.encode2utf8(song_name))              song_url = song_url + '$$' + urllib2.quote(self.encode2utf8(SINGER)) + '$$$$&url=&listenreelect=0&.r=0.1696378872729838'              xmlfile = urllib2.urlopen(song_url)              xml_content = xmlfile.read()              xmlfile.close()              url1 = re.findall(self.reg_encode, xml_content)              url2 = re.findall(self.reg_decode, xml_content)              if not url1 or not url2:                  continue              url = url1[0][:url1[0].rindex('/') + 1] + url2[0]              self.task.append({song_name:url})          return self.task               def start_download(urls):      #创建一个队列      quene=Queue()      #获取list的大小      size=len(urls)      #开启线程      for _ in xrange(size):          t=Downloader(quene)          t.setDaemon(True)          t.start()      #入队列      for url in urls:          quene.put(url)                quene.join()          if __name__=='__main__':      http=HttpRequest()      urls=http.http_request()      start_download(urls)