1. Struts
BY:
Tejashri Udavant.

2. Preface Problem we faced when designing JSP:
Familiar with HTML and expertise in web design (the content, font, color, web page layout etc.)
Having Programming knowledge with Java (embedded java code in JSP)

3. Break down the tasks with Struts

4. What is Struts Norwegian word meaning ostrich
A Java open source framework especially used for web application development.
With Struts, developers can following the MVC design pattern to design web application

5. What is MVC design pattern
Input Processing Output
Controller Model View
Calculation, database operation, connection with remote systems
Application screen, web pages

6. Controller in Struts Called ActionServlet Its functions:
- Receive http request from client (Web browser)
- Invoke Model part by calling Action objects
- Send the JSP file returned by Action objects back to the client

7. Model component in Struts
In Action objects
Its functions:
- Carrying out business related processing (by itself or other objects)
- Determining the next web page to send to the client

8. View component in Struts
Html and JSP files with Struts tags embedded
Features provided by Struts tags:
- Sophisticated html form handling (validation, error display etc.)
- Display localized messages stored in a resource file on web page (message tag)
- And many others …

9. How to get M V C parts work together
A configuration file called struts-config.xml in XML format
Defines Action classes, Java Beans used in the project
Define “virtual” paths to be used in JSP files

10. An example …<struts-html:form action=“action1”>…
In TestWeb1.jsp:
…<struts-html:form action=“action1”>…
In struts-config.xml:
… < action path=“action1” type=“JavaBean1”…>…
<forward name=“next1" path="/nextpage1.jsp"/>
If changing to use another java bean as Action class in the future,…
Same
Set .. To be…
Then Everything is done

11. The whole process of a client request
Call “action1”
Client
ActionServlet
Action object
JavaBean1
request
ActionForward
next1
find
JSP / HTML files
nextpage1.jsp

12. The architecture required for Struts Applications
Struts classes / Taglib
Java Application Server
JSP / Servlet engine