Struts 2 Registration Form Example

1. Input page creation (inx.jsp)

It is a straightforward JSP page that makes use of struts and two UI tags to build a form for user input.

<%@ taglib uri="/struts-tags" prefix="s" %>  
 <s:form action="register">  
<s:textfield name="name" label="UserName"></s:textfield>  
<s:password name="password" label="Password"></s:password>  
<s:textfield name="email" label="Email"></s:textfield>  
<s:radio list="{'male','female'}" name="gender"></s:radio>  
<s:select cssStyle="width:155px;"list="{'india','pakistan','other',}"  
name="country" label="Country"></s:select>  
<s:submit value="register"></s:submit>   
</s:form>  

2. Action class creation (RegAct.jsp)

There are five fields, and one execute method in this Action class. As we know, the struts framework generates an instance of the action class for each request; we send this object to the save function of the RegDao class.

package com.codingninjas;   
public class RegisterAction {  
private String name,password,email,gender,country;  
//setters and getters  
public String execute(){  
    int i=RegisterDao.save(this);  
    if(i>0){  
    return "success";  
    }  
    return "error";  
}  
}  

3. A class to store the data (RegDao.jsp)

This class retrieves information from the object of the RegAct class and puts it in the NinjaUser table.

package com.codingninjas;  
import java.sql.*;  
public class RegisterDao {  
  
public static int save(RegisterAction r){  
int status=0;  
try{  
Class.forName("oracle.jdbc.driver.OracleDriver");  
Connection con=DriverManager.getConnection(  
"jdbc:oracle:thin:@localhost:1521:xe","system","oracle");  
  
PreparedStatement ps=con.prepareStatement("insert into NinjaUser values(?,?,?,?,?)");  
ps.setString(1,r.getName());  
ps.setString(2,r.getPassword());  
ps.setString(3,r.getEmail());  
ps.setString(4,r.getGender());  
ps.setString(5,r.getCountry());  
          
status=ps.executeUpdate();  
  
}catch(Exception e){e.printStackTrace();}  
    return status;  
}  
}  

4. Request to be mapped in (struts.xml), and view components are defined

The package, action class, and view components are all described in this xml file.

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD  
Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">  
<struts>  
  
<package name="default" extends="struts-default">  
  
<action name="register" class="com.codingninjas.RegisterAction">  
<result name="success">register-success.jsp</result>  
<result name="error">register-error.jsp</result>  
</action>  
  
</package>  
</struts>  

5. View components are created

We're going to make two view components here: register-success.jsp and register-error.jsp.

Register-success.jsp
<%@ taglib uri="/struts-tags" prefix="s" %>  
Welcome, <s:property value="name"></s:property> 
Register-error.jsp 
<%@ taglib uri="/struts-tags" prefix="s" %>  
Sorry, some error occurred!  
<s:include value="index.jsp"></s:include>  

Frequently asked questions

What is Struts2?

Strut 2 is a framework which helps in making the application. It is open-source, Flexible, Industry standard and extendable. 

Who developed Struts2?

It was developed by the Apache software foundation.

What is a web application?

A web application is an application program that exists on remote servers and is used by the user through the internet. 

What is the function of the Struts.xml File in Struts?

The user can specify every mapping to actions in the struts.xml file so that a certain action is called whenever a specific operation is carried out. It is located in the WEB-INF/classes folder, also known as the configuration file.

What are the steps to create a registration application using struts2?

Firstly, Input page creation (inx.jsp) then in next step action class creation (RegAct.jsp) then in next step create a class to store the data (RegDao.jsp) then the request to be mapped in (struts.xml), and view components are defined finally view components are created

Conclusion

In this blog, we have extensively discussed the process of making registration forms in struts. We saw first that we needed to select a database. Then we went through the code to create different pages and classes. Then we learnt different viewpoints, and in the end, we discussed some of the frequently asked questions related to this. 

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