Research And Implement Of Web Application Base On Ajax

The application program of C/S (Client/Server) is appearing with the Windows emergence in 1990's and with the buildup of the server performance, which adopts the graphical user interface, has better data processing in client, provides the powerful performance of data manipulation and business handling. But along with the improving of the complexity of the application program, it is found that the structure of C/S is deploy costly high, application program update in client and difficult to maintenance. Because of the disadvantages and with the development of the Internet, in the mid-90's, there comes the application program of B/S (Browser/Server) , it is the result of the Web broadly used which resolved the difficulties. But B/S application program is enslaved to HTML and can not display data with abundant effects like C/S, so users feel too bad. And then a kind of application program called Rich Internet Application (RIA) emerged which has better interaction and plenty user experience.Actually, RIA is a kind of C/S structure based on Web. For having client, RIA application provides powerful functions, letting the user experience the better interactive and better experiences. And at the same time RIA is applied based on the Internet browser, so it is very convenience. Moreover, Ajax is a kind of RIA technique which is approbated broadly.First, the thesis addresses the development of the Web application technique. And then it analyses the RIA application and Ajax aimed at the problems the Web technique existed which is based on the characters of the Web application technique development.Second, the thesis makes analysis and research all round. By analyzing the four key techniques to implement Ajax and its contribution to Ajax implementation, the thesis advances an Ajax technique frame which achieves the basic steps addressed in the Ajax technique theory. And then discusses the security problems of importing Ajax technique into Web implementation andgives the solutions to the problems. So there get the four basic characters of the Ajax technique.Lastly, at the design stage of the CIDA education assistant flat, the thesis analyzes the changes of the system frame which results from importing Ajax technique into Web development and implements Ajax application. At the same time, aimed at the representative user management problems in the system, the thesis achieves an integrate solution based on the RBAC and combined the system requirements.