The Application of Regular Expression in Remote Web Pages Download

The paper analyses the structure characteristic of the long-range Web Pages and expounds the application of regular expression in remote Web pages download.It put forward two kinds of methods of obtaining long-range data:using regular expression to match and replace surplus HTML source document,and directly matching and drawing metadata from HTML source document.At the same time ,it has finished the whole process of data analyse,data abstraction and date saving,and download accessory,picture,music data ect.of article to local Server.