The Design And Implementation Of Lucene-Based Digital Product Vertical Search Engine

Nowadays, Internet has become an important information resource. However, Information Fortress and Information Overload have become an increasingly serious problem. Various Internet-based information search engine emerged and has been developing rapidly .Although Google, Baidu and other search engines are very powerful, when they use the information to search for certain professional, general search engines ,they have some inadequacies.The topic-specific search engine is a kind of precise classification, renewal prompt search engine. And the topic-specific search engine is becoming the research hot spot and the trend of development.The paper takes the users' digital product search demand as the researching background, only then uses the vertical search idea and technology, shares the website content by taking the domestic digital product as the digital product information specific automaticgathering object, and realizes the network video search function. In order to realize the digital product information full text retrieval, the system also absorbs the Lucene full-text search engine to realize the system full-text search.and the main work is as follows.First, on the foundation of the system function demand and goal, the paper utilizes the UML analysis design technology and system three overhead system architecture, and the system functional design and carries on the detailed elaboration to the database design as well as the system data backup strategy.Second,the paper establishs the topic-specific search engine indexing and retrieval devide, on the basis of an in-depth analysis of the Lucene full-text search engine provided by indexing and searching features.Third,the paper adds the theme of the forecast algorithm in the design of the collector, and makes it suitable for the topic-specific search engine.Fourth,improving the original sorting algorithm to enhance the quality of search results.Finally,the system development environment is WindowsXP+Tomcat+Tomcat+JSP + MySQL, the paper gives the core module design and realization of the digital products vertical search engine.Practice shows that , the design and realization of the vertical search engine for digital products in this paper is feasible,the system had met the basic design goal.