此源代码是实现一个网页净化的功能，即对输入网页进行净化输出网页中包含的主要标题和内容，该程序对信息检索和搜索引擎的建立起很大作用-This Programme is to the Webpage Clearation,Making the input webpage to be outputted by only its main content and title. It will play a key role to the Information Retrieval and Search