The challenges are analyzed,which that the adverse information on world wide web has brought to network security and web culture.The key technical and operational principles of the architecture in web information search and data-mining are introduced.After the analysis of the functions and disabilities of ordinary reptiles,the principle,implementation,functions,and performance of WebCrawler are elaborated.In addition,the application of WebCrawler in web information search and data-mining system are discussed in detail.Passed tests show that the WebCrawler can access a good range of information...
