Struts2 Login Application Example
Let us see the simple login application using struts2, but friends am giving with out validations, we will see in depth validations very soon 
- success.jsp
- error.jsp
- index.jsp
- LogingEx.java [ in java4s package ]
- web.xml [ in web-inf ]
- struts.xml [ in web-inf/classes folder ]
Directory Structure
index.jsp
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<body>
<s:form action="verify">
<s:textfield name="uname" label="Enter Username" /><br>
<s:password name="password" label="Enter Password" /><br>
<s:submit value="Click" align="center" />
</s:form>
</body>
</html>
success.jsp
<%@ taglib prefix="s" uri="/struts-tags" %>
Hello <s:property value="uname" />, you have been successfully logged in
error.jsp
<%@ taglib prefix="s" uri="/struts-tags" %>
Login failed...!
LogingEx.java
package java4s;
import com.opensymphony.xwork2.ActionSupport;
public class LogingEx extends ActionSupport{
private static final long serialVersionUID = 1L;
private String uname,password;
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String execute()
{
if(uname.equals("java4s") && password.equals("pass"))
{
return SUCCESS;
}else
return ERROR;
}
}
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">
<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>
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>
<include file="struts-default.xml"/>
<package name="a" extends="struts-default">
<action name="verify" class="java4s.LogingEx">
<result name="success">/success.jsp</result>
<result name="error">/error.jsp</result>
</action>
</package>
</struts>
After Execution
Output
Enter java4s as user name and pass as password
What you are thinkig....
