Module 7: Struts 2 Basics

Thanisa Kruawaisayawan

Thanachart Numnonda

www.imcinstitute.com

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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 technologiesStruts application is a genuine Web application that should

be able to run on any Servlet container including all Java EE compliant App servers

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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

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How Struts 2 Works

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Our Goal

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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

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Step 1: Write JSP pages Step 1: Write JSP pages

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JSP Pages

Write one JSP page for each view Use Struts tags for

Handing HTML input formsWriting out messages

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login.jsp

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welcome.jsp

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Step 2: Write Step 2: Write Action classesAction classes

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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

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LoginAction.java

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Step 3: Config Step 3: Config struts.xmlstruts.xml

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struts.xml Identify required Action's and then define them as

<action> elements

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Step 5: Build, Deploy,Step 5: Build, Deploy,and Test Application and Test Application

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Results

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Acknowledgement

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

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Thank you

thananum@gmail.com

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www.imcinstitute.com