Thursday, April 25, 2013

Validation using Struts2 Framework on Radio button and DropDownList with Eclipse

In this Tutorial we are performing server side validation using Struts2 framework on various fields eg. name,radio button and dropdownlist.

Project Structure in Project Explorer:

Download Struts2 Jars

Struts2 jars setting, for More Details Read How to set Struts2 Environment
Project properties

Web Deployment Assembly


fillform.jsp

create a user input page.
 <%@ page language="java" contentType="text/html; charset=ISO-8859-1"  
      pageEncoding="ISO-8859-1"%>  
      <%@ taglib prefix="s" uri="/struts-tags"%>  
      <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
 <html>  
 <head>  
 <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">  
 <title>Register</title>  
 </head>  
 <body bgcolor="brown">  
      <h1>Registration</h1>  
      <hr>  
            <s:form action="register.action" method="post" >  
            <s:textfield name="Name" label="Name" size="20" />  
            <s:radio name="Gender" label="Gender" list="{'Male', 'Female'}" />  
            <s:select name="Course" label="Course" list="{'Select-Option','B.Tech', 'MCA', 'MSC'}" />  
            <s:submit label="Register" align="center" />  
         </s:form>  
 </body>  
 </html>  

success.jsp
create a user's success page.
 <%@ page language="java" contentType="text/html; charset=ISO-8859-1"  
   pageEncoding="ISO-8859-1"%>  
   <%@ taglib prefix="s" uri="/struts-tags"%>  
 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
 <html>  
 <head>  
 <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">  
 <title>success</title>  
 </head>  
 <body bgcolor="lightblue">  
 <center><h3>  
 Hello! <s:property value="name"/></h3></center>  
 </body>  
 </html>  

ContactAction.java
create a Action java class.
 package in.blog.webideaworld;  
 import com.opensymphony.xwork2.ActionSupport;  
 @SuppressWarnings("serial")  
 public class ContactAction extends ActionSupport {  
      private String name;  
      private String gender;  
      private String course;  
      public String getName() {  
           return name;  
      }  
      public void setName(String name) {  
           this.name = name;  
      }  
      public String getGender() {  
           return gender;  
      }  
      public void setGender(String gender) {  
           this.gender = gender;  
      }  
      public String getCourse() {  
           return course;  
      }  
      public void setCourse(String course) {  
           this.course = course;  
      }  
      public String execute() throws Exception{  
           return SUCCESS;  
      }  
 }  

ContactAction-validation.xml
Create validators in XML file and the format for the validatiors xml file is <ActionClassName>-validation.xml
 <!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.3//EN"  
           "http://struts.apache.org/dtds/xwork-validator-1.0.3.dtd">  
 <validators>  
      <field name="Name">  
           <field-validator type="requiredstring">  
                <message>Name is Required.</message>  
           </field-validator>  
           <field-validator type="regex">  
       <param name="expression">[a-zA-Z]{2,20}</param>  
       <message>Please enter valid name.</message>  
     </field-validator>  
      </field>  
      <field name="Gender">  
           <field-validator type="requiredstring">  
                <message>Gender is Required.</message>  
           </field-validator>  
      </field>  
      <field name="Course">  
           <field-validator type="regex">  
       <param name="expression">B.Tech|MCA|MSC</param>  
       <message>Course is required.</message>  
     </field-validator>  
      </field>  
 </validators>  

struts.xml
set result name="success" for success.jsp and name="input" for fillform.jsp for validation messages to show up on input page.
 <?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>   
   <package name="default" namespace="/" extends="struts-default">  
     <action name="register" class="in.blog.webideaworld.ContactAction" method="execute" >  
     <result name="success">success.jsp</result>  
     <result name="input">fillform.jsp</result>  
     </action>  
   </package>  
   </struts>  

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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 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>Struts2Validate_form</display-name>  
  <welcome-file-list>  
   <welcome-file>fillform.jsp</welcome-file>  
   </welcome-file-list>  
  <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>  
 </web-app>  

Download Code

View in Browser: 
checking validation:

success page: 

1 comment:

Pratap A.K said...

nice work, good tutorial,Thanks a lot

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