| FRMAEWORKS ShowCase |
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Content
-->Struts 1.x Life Cycle
--> Action Types
--->Struts 2.x Life Cycle
--->Different between Struts 1.x Struts 2.x
--->Developer Point of View Struts 1.x and Struts 2.x
--->Step by step Develpement: Struts 1.X -Example
--->Step by step Develpement: Struts 2.X -Example
--->Example program --http://siva2baba.diinoweb.com
Struts 1.x life Cycle
client HTTP Request
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Action-servlet (web.xml)
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Request Processor(process())
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Action class(execute())
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Return Action Forward(struts.comfig.xml)
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HTTP Response() to client
Action Types:
1.Forward Action
2.Dispatch Action
3.include Action
4.lookUpDispatch Action:
5.MappingDispatch Action
6.switch Action
7.Locale Action
Dispatch Action:
It provides mechanism to collect related functions into a single action and eliminates the need of creating multiple independent actions for each function.
Forward Action:
It enables to forward request to the specified URL.
Include Action:
It provides mechanism to include the contents of a specified URL.
LookUpDispatch Action:
It provides mechanism to combine many similar actions into a single action class, in order to simplify the application design .Java map class is used to dispatch methods.
MappingDispatch Action:
It lets you combine many related actions into a single action class and manage through creating multiple action-mappings.
switch Action:
It provides a mechanism to switch between modules and then forwards control to a URI (specified in a number of possible ways) within the new module.
Locale Action:
It provides mechanism to set a user's locale and further forwarding that to a specified page.
Struts 1.x + WebWork Framework = Struts 2
Struts 2.x Life Cycle
web browser requests
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Filter Dispatcher
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Interceptors(to perform workflow, validation,
and file upload handling)
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Action(The Action method executes, usually storing and/or
retrieving information from a database)
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The Result renders the output to the browser, be it
HTML, images, PDF, or something else
| Struts 1 |
Struts 2 |
| Action |
Action |
| ActionForm |
Action POJO |
| ActionForward |
Result |
| Struts-config.xml |
struts.xml |
| RequestProcess |
Interceptors |
| ActionServlet |
FilterDispatcher |
| validation.xml |
Action-validation.xml |
Step by step Develpement: Struts 1.X -Example
Struts 1.x Example
exercise03
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WEB-INF
||---> web.xml
||--->struts-config.xml
||----->classesstrutsexample
||--->CustomerAction.java
||--->CustomerForm.java
||---->lib
||--->index.jsp
||--->Success.jsp
||---->CustomerForm.jsp
Step by step Develpement: Struts 2.X -Example
Struts 2.X -Example
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WEB-INF
|---struts.xml
|--------------->classes
|--->mypackage
|--->HomeTime.java
|--------------->lib
|---------------->struts2-core-2.0.11.jar
|---------------->xwork-2.0.4.jar
|---------------->xml-apis-1.0.b2jar
|---------------->ognl-2.6.11.jar
|---------------->commons-beanutils-1.6.1.jar
|---------------->commons-digester-1.6.jar
|---------------->commons-lang-1.0.jar
|---------------->commons-codec-1.2.jar
|---------------->commons-collections-2.1.jar
|---->Web.xml
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index.jsp
Web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Struts Helloworld</display-name>
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
index.jsp
<html>
<head>
<META HTTP-EQUIV="Refresh" CONTENT="0;URL=pages/HelloTime.action">
</head>
<body>
<p>Loading ...</p>
</body>
</html>
struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.enable.DynamicMethodInvocation" value="false" />
<constant name="struts.devMode" value="false" />
<package name="mypackage" namespace="/pages" extends="struts-default">
<action name="HelloTime" class="mypackage.HelloTime">
<result>/pages/HelloTime.jsp</result>
</action>
<action name="*" class="mypackage.HelloTime">
<result>/pages/HelloTime.jsp</result>
</action>
<!-- Add actions here -->
</package>
</struts>
mypackage.HelloTime.java
/*
* HelloTime.java
*
* Created on Jan 18, 2008, 3:22:49 PM
*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package mypackage;
/**
*
* @author 150883
*/
import com.opensymphony.xwork2.ActionSupport;
import java.util.Date;
public class HelloTime extends ActionSupport {
public static final String MESSAGE = "My Own Struts 2 Hello Time Tutorial!";
public String execute() throws Exception {
setMessage(MESSAGE);
return SUCCESS;
}
private String message;
public void setMessage(String message){
this.message = message;
}
public String getMessage() {
return message;
}
public String getCurrentTime(){
return new Date().toString();
}
}
page/HelloTime.jsp
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Struts 2 Hello Time Application!</title>
</head>
<body>
<h2><s:property value="message" /></h2>
<p>Current date and time is: <b><s:property value="currentTime" /></b>
</body>
</html>
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Today, there have been 3 visitors (6 hits) on this page!
www.siva2baba.com & shivababa@gmail.com
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