从web page中提取主要内容，例如从新闻网页中提取新闻内容，且可以判别网页是否含有主内容。采用java编写，附送源代码（eclipse工程）和实例程序，并附赠一篇关于抽取方法的论文-Web page from the extraction of main contents, such as extracting news from news web page content, and the time to check whether it contains the web content.