Mobile Web Site Development Based On DOM Tree Information Extraction

As the development of the Internet technology and the computer technology, information technology is deeply affecting people's life. The development of mobile Internet, especially the third generation (3G) technology, it provides a powerful bearing channel and rich professional ability supports and makes the people's life more colorful. People also eagerly hope that they can browse the web to get information at anytime, anywhere and any place through the wireless network. But the mobile equipments have small screen, small memory, low bandwidth and other weakness that cannot compare with PC, so the original HTML pages cannot display perfectly on the mobile equipment screen.Based on the above problems, thesis introduces Mobile Web site development based on DOM tree information extraction after researching the situation of web development research. This paper mainly studies two big problems of the development of mobile Web site: the first is how to extracting information from Web page, the other is how the information displays on the mobile device screen well. This platform uses a conversion server and data transformation strategy, after access to Web pages information through the URL, the first step is to transform the web page into standard XHMTL document. Then in the form of DOM tree, according to the selection rules, use XSLT file mapping method, produce format good extraction results in XML documents preserved. Extracting results should pass information rendering, can good display on a mobile device. Render process is to change the links and the pictures. Through the rendering template, it can change the extracting results to the structure forms that can display on the mobile devices well. By platform supporting, finally it realizes the mobile web development. The method must satisfy the general nature of the procedure, and with the Ocean University of China as an example the mobile Web site is developed, the experimental results show that the method is feasible.