1 – Introduzione alle tecnologie web e alle prime applicazioni web

Obiettivo

• A brief introduction to the Web Technology
• The initial vision of the web: the static model
  • URL
  • HTTP
  • HTML
• Cascading Stile Sheets (CSS)
• Common Gateway Interface (CGI)
• A Web Server: Tomcat
• Exercises

Teoria

• Introduction to the Web Technology
  • Brief History of the Web
  • The Initial Vision of the Web: the Static Model (see also W3C Web Architecture - Architecture Principles)
• The Uniform Resource Locator (*URL*)
• The *HTTP* Protocol
  • See also W3C Web Architecture - Protocols
• The *HTML* Language
  • See also W3C Web Design and Applications - HTML & CSS
• The CSS Stile Sheet
  • See also W3C Web Design and Applications - HTML & CSS
• The Common Gateway Interface (CGI)
  • CGI represents the first form of server-side computation implemented.
  • See also the RFC Specification RFC 3875 and here
• A Web Server: Tomcat
  • See also W3C Web Design and Applications - HTML & CSS
  • The PDF files were prepared by Prof. Enrico Lodolo

Esercizi

• Exercise 1: Deploy the HTML-applications examples in Tomcat
• Exercise 2: Create a simple html page as shown here and deploy it in Tomcat
  • Solution
• Exercise 3: Exploit links and anchors as shown here and deploy the new application in Tomcat
  • Solution
• Exercise 4: Look at this example with frames: in the file navigator.html the attribute target in an anchor specifies the frame where the new document will be opened
• Exercise 5: Look at this example of CSS use
• Exercise 6: Look at this example of CGI application
  • See also the Apache documentation for the CGI support in Tomcat