| With the development of the Internet, information techniques havechanged the feature of the world and the style of people's life deeply. Atthe same time, the growth of the Internet information makes the problemof how to obtain the information quickly and accurately seriously. 90's in20th century, the search engine developed quickly, and it solved theproblem of collecting and searching information well. At the beginning of21 century, along with WEB2.0 concepts and technical emergence, theInternet got into the modern ear of "knit a net by all the people" and manyrich client techniques which as the base of web2.0 are used widely. Theasynchronous communication is one of main symbols of rich clienttechnology. Through the asynchronous communication technology, thealternation between the client and the server is processing in thebackstage by the way of asynchronous communication. It will liberatecustomer from the long server response waiting and arid page renovatingand effectively improve the user's efficiency. It also will respond tocustomer's request more quickly, alleviate the pressure of servereffectively, all of which will provide a better service to the users. This paper review the present research condition of search enginesystematically, analyze the principium of page searching and saving, andintroduc the working principium and advantages of the asynchroniescommunication, and sum up some problems which were brought byadopting the way of asynchronies communication. This paper also putforward a way of page searching for the asynchronies communication.The researches of asynchronies communication focus onovercoming the new problems which were brought by adopting it. At thepresent time, the working way of most full text search engine base onanalyzing the hypedinks, so the search engine only can collect thehyperlinks which in the content of HTML page, and ignore the hyperlinkswhich in the district of script codes. The script code plays an importantrole in the working way of asynchronies communication, a great deal ofhyperlinks are concealed in the district of script code, so it has to makesome improvement on the search engine, and make the search enginepowerful enough to dig out the hyperlinks in the distinct of script codes.This paper puts forward a way which can achieve this target. This waytakes full advantages of the script environment and the Windows messagemechanism, it can collect the hyperlinks through simulation clickingscript function. In the meantime, when adopting the asynchroniescommunication, the feedback data of server is not a complete web page,so it can't be saved directly. In order to solve this problem, this paper introduces a way which uses the source page and the part-refreshmechanism to saving the page.Finally, it gives the future work of the research. |
