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Active Server Pages v.s. Java Server Pages

Active Server Pages v.s. Java Server Pages. Presenters: Lan Guo Qunying Fan Pei-Xun Wu Date: 02-11-2000. What is Active Server Pages(ASP)?. Developed by Microsoft Server-side Script Executed in Web Server Response to user request.

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Active Server Pages v.s. Java Server Pages

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  1. Active Server Pages v.s. Java Server Pages Presenters: Lan Guo Qunying Fan Pei-Xun Wu Date: 02-11-2000

  2. What is Active Server Pages(ASP)? • Developed by Microsoft • Server-side Script • Executed in Web Server • Response to user request

  3. Which web server can run ASP? • Windows Platform: • - Internet Information Server (IIS 3.0 ~ 5.0) for NT/2000 • - Personal Web Server for Win98 • Non-Windows Platform: • - Chilisoft ASP product for Unix variants

  4. Structure of ASP(1/2) • HTML Document • Server-side Script • Using <% %> Script element • - ex. <% ……%> • Using <SCRIPT> element • - ex. <SCRIPT RUNAT=“SERVER”> - - </SCRIPT> • Support two (or more) Script Language • VBScript (default) • JScript • switch by using <%@ LANGUAGE = Jscript %>

  5. Structure of ASP (2/2) • Server-side Include • - Including separate files by • <! -- #INCLUDE FILE=“filename” -- > • or • <SCRIPT RUNAT=“SERVER” SRC=“filename”> • <./SCRIPT>

  6. Processing an ASP File • ASP pages are .asp files • Locate server-side code • Compile server-side code by proper scripting engines • Insert result to appropriate points into the page • Send the page to IIS

  7. ASP with Web Server Web Server ISAPI Internet Serer Application Programming Interface ASP DLL ASP Script Database Scripting Engines

  8. The Intrinsic ASP Objects (1/3) • Response Object • - used to access the response created to send back to client • Application Object • - created when ASP DLL is loaded • - provide a repository for storing variables and object reference • - available for all pages

  9. The Intrinsic ASP Objects (2/3) • Session Object • - created for each visitor when they first request ASP page • - remain available till default time out • - store variables and object references • - available only to the pages that this visitor opens • Server Object • - provide method and properties used in scripting with ASP • ASPError Object • - provide detail information about the last error occured

  10. The Intrinsic ASP Objects (2/2) Application Object Session Object Client Request Server Response Session Object Server Object Client Request Response ASPError Object

  11. ASP Performance Graphs

  12. ASP Conclusion • Completely embedded with HTML, Script • No manually Compiling • Object Oriented and can expand function of ActiveX • Server Component • Browser Compliant • Code hiding • Easily coding • Efficiency

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