Research And Implementation Of The Vertical Search Engine System Based On JAVA With LUCENE And HERITRIX

With the Internet information on the Web growing exponentially style, the search engine has become the first choice for users to browse the network information.The traditional general-purpose search engines (Google, Yahoo and domestic Baidu, etc.), as a supplementary tool for finding information has become the access for the most Internet users to enter the network.However, these versatile search engine also has some limitations, such as: the information overload for general search engine, the query is not accurate, deep is not enough and so on.In this case, in order to solve these problems, vertical search engines came into being.The concept of vertical search engines focused on a particular industry or field to meet the needs of industry professionals, or a business'needs of professional search engine. The subdivision and extension of Search engine, is the structure of certain types of web resources and deep integration of resources and provide users with professional user behavior information service. The feature is "specialized,intensive and deep", and with industry color, compared with general search engines disorder massive information, vertical search engine is more monographs, specific and in depth. This paper focuses on and analyzes this emerging technology.The main contents are as follows:1. Study the origin of vertical search engines, the development and application of the process. Analysis the development and application of traditional search engine model and Web application model search engine, search engine technology on the key technologies included in the analysis。2. Clarify the Basic principles and the use of Lucene technology, Heritrix technology, information structured extraction technique .It is presented to integrate Lucene with Heritrix fully integrated with the J2EE platform solution.3.Implement mobile vertical search engine system .