抓取网页内容简单程序（百度播放列表）可以用来看各区的排行下载量以及下载次数-Crawl web content simple program (playlist)

根据给出的链接地址，获取DOM树，根据树，活的每个元素，从而抓取到web网页的内容-According to the given URL, obtain the DOM tree, the tree, each element of living, which captures the web Webpage content