Struts_App1

--web.xml
-------------
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>Struts1_HelloWorld</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
  <servlet-name>action</servlet-name>
       <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
         <init-param>
  <param-name>config</param-name>
  <param-value>/WEB-INF/struts-config.xml</param-value> 
  </init-param>
  <load-on-startup>1</load-on-startup>  
  </servlet>
  <servlet-mapping>
        <servlet-name>action</servlet-name>
  <url-pattern>*.do</url-pattern>
  </servlet-mapping>

</web-app>
----------------------
--Index.jsp
---------------------
<%@taglib uri="http://struts.apache.org/tags-html" prefix ="html"%>
<html:errors/>
<h1>Welcome to World</h1>
<html:form action ="hello">
Name: <html:text property="name"/>
Roll: <html:text property="roll"/>
<html:submit value ="Say Hello"/>
</html:form>
---------------------
--FormBankUp.java
---------------------
package bean;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.*;
//This is bean class which extends ActionForm, //
public class FormBackUp extends ActionForm
{
private int roll;
private String name;

public int getRoll() {
return roll;
}
public void setRoll(int roll) {
this.roll = roll;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}

@Override
public ActionErrors validate(ActionMapping mapping, HttpServletRequest request)
{
ActionErrors ae = new ActionErrors();
if(name.equals(""))
{
ae.add("name", new ActionMessage("nameError"));
//return ae;
}
/*if("".equals(getRoll() ) )
{
ae.add("roll", new ActionMessage("rollError"));
//return ae;
}*/
return ae;
}
}

-----------------------

--HelloController.java

-----------------------

package bean;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import org.apache.struts.action.*;

public class HelloController extends Action

{//This similar to controller classes ie. Servlets service()

@Override

public ActionForward execute(ActionMapping mapping, ActionForm form, ServletRequest request, ServletResponse response)

throws Exception 

{

String name = request.getParameter("name");

int roll = Integer.parseInt(request.getParameter("roll"));

System.out.println("Name: "+name);

System.out.println("Roll: "+roll);

request.setAttribute("res","Hello......"+name);

return mapping.findForward("success");

}

}

---------------------

--Success.jsp

---------------------

<%=request.getAttribute("res") %>>

--------------------

--struts-config.xml

--------------------

<?xml version="1.0" encoding="UTF-8"?>

<struts-config>

<form-bean>

<form-bean name="HF" type ="bean.FormBackUp"/> <!-- HF if ref. to FormBackUP -->

</form-bean>

<action-mapping>

<action path="/hello" name="HF" index="/index.jsp" type="bean.HelloController">

<forward name="success" path="/Success.jsp"/>

</action>

</action-mapping>

<message-resources parameter="bean/messages"/>

</struts-config>

--------------------------

--messages.properties

--------------------------

nameError = <font color='red'> Please Enter Name</font>
rollError = <font color='red'> Please fill Roll No.</font>

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