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Module 7: Struts 2 Basics


  Thanisa Kruawaisayawan
   Thanachart Numnonda
   www.imcinstitute.com
Apache Struts
   Struts is an open source Web application framework
    developed as Apache Jakarta project
     http://jakarta.apache.org/struts/
   Model-View-Controller (MVC) framework
   Used for constructing web applications based Servlets
    and JSP technologies
     Strutsapplication is a genuine Web application that should
      be able to run on any Servlet container including all Java
      EE compliant App servers


                                                                   2
Why Struts?
 Takes much of the complexity out of building your
  own MVC framework
 Encourages good design practice and modeling
 Easy to learn and use
 Feature-rich and many supported 3rd-party tools
 Flexible and extensible
 Large user community
 Stable and mature
 Open source                                       3
How Struts 2 Works




                     4
Our Goal




           5
Steps
1. Write JSP pages (View)
2. Write Action class (Model)
3. Forward at either success or error
   through configuration set in struts.xml
4. Build, deploy, and test the application




                                             6
Step 1: Write JSP pages



                          7
JSP Pages
 Write one JSP page for each view
 Use Struts tags for
     Handing  HTML input forms
     Writing out messages




                                     8
login.jsp




            9
welcome.jsp




              10
Step 2: Write
Action classes



                 11
Action Class
Extend com.opensymphony.xwork2.ActionSupport
  class
 Decide set of properties that reflect the input form
 Write getter and setter methods for each property
 Write execute() method




                                                         12
LoginAction.java




                   13
Step 3: Config
  struts.xml



                 14
struts.xml
   Identify required Action's and then define them as
    <action> elements




                                                         15
Step 5: Build, Deploy,
and Test Application


                         16
Results




          17
Acknowledgement
 Most contents are borrowed from the
presentation slides of Sang Shin, Java™
Technology Evangelist, Sun Microsystems,
Inc.




                                           18
Thank you

   thananum@gmail.com
www.facebook.com/imcinstitute
   www.imcinstitute.com



                                19

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Java Web Programming [7/9] : Struts2 Basics

  • 1. Module 7: Struts 2 Basics Thanisa Kruawaisayawan Thanachart Numnonda www.imcinstitute.com
  • 2. Apache Struts  Struts is an open source Web application framework developed as Apache Jakarta project  http://jakarta.apache.org/struts/  Model-View-Controller (MVC) framework  Used for constructing web applications based Servlets and JSP technologies  Strutsapplication is a genuine Web application that should be able to run on any Servlet container including all Java EE compliant App servers 2
  • 3. Why Struts?  Takes much of the complexity out of building your own MVC framework  Encourages good design practice and modeling  Easy to learn and use  Feature-rich and many supported 3rd-party tools  Flexible and extensible  Large user community  Stable and mature  Open source 3
  • 4. How Struts 2 Works 4
  • 6. Steps 1. Write JSP pages (View) 2. Write Action class (Model) 3. Forward at either success or error through configuration set in struts.xml 4. Build, deploy, and test the application 6
  • 7. Step 1: Write JSP pages 7
  • 8. JSP Pages  Write one JSP page for each view  Use Struts tags for  Handing HTML input forms  Writing out messages 8
  • 11. Step 2: Write Action classes 11
  • 12. Action Class Extend com.opensymphony.xwork2.ActionSupport class  Decide set of properties that reflect the input form  Write getter and setter methods for each property  Write execute() method 12
  • 14. Step 3: Config struts.xml 14
  • 15. struts.xml  Identify required Action's and then define them as <action> elements 15
  • 16. Step 5: Build, Deploy, and Test Application 16
  • 17. Results 17
  • 18. Acknowledgement Most contents are borrowed from the presentation slides of Sang Shin, Java™ Technology Evangelist, Sun Microsystems, Inc. 18
  • 19. Thank you [email protected] www.facebook.com/imcinstitute www.imcinstitute.com 19