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Struts 2 result type


As when request come business logic is executed first and after that result is to display as view. Struts provide a number of predefined result types. The dispatcher is the default result type. The <results> tag is used to specify a result type in sturts.xml. The dispatcher, FreeMaker and redirect are the commonly used result types.

Struts 2 FreeMaker result type example:

login.jsp

<%@ taglib uri="/struts-tags" prefix="s"%>
<html>
	<head>
	 <title>Struts 2 freemarker result type example</title>
	</head>
	<body>
	  <h3>This is a freemarker result type example.</h3>
 
	  <s:form action="Login">
		<s:textfield name="userName" label="UserName" />
		<s:submit value="Hello" align="center"/>
	  </s:form>
 
	</body>
</html>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 
 
 	<filter>
		<filter-name>struts2</filter-name>
		<filter-class>
        	org.apache.struts2.dispatcher.ng.
        	filter.StrutsPrepareAndExecuteFilter
        </filter-class>
	</filter>
 
	<filter-mapping>
		<filter-name>struts2</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
 
	<welcome-file-list>
	  <welcome-file>login.jsp</welcome-file>
	</welcome-file-list>
 
</web-app>

struts.xml

<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
 
<struts>
 
	<package name="user" extends="struts-default">
		<action name="Login" 
		            class="com.codesjava.action.Login">
		 <result name="success" type="freemarker">
			<param name="location">/welcome.fm</param>
		 </result>
		</action>
	</package>
 
</struts>

Login.java

/**
 * This class is used as an action class.
 * @author codesjava
 */
public class Login {
	//data members
	private String userName;
 
	//business logic
	public String execute(){
		return "success";	
	}	
 
	//getter setters
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
}

welcome.fm

Hello ${userName}.

Output:

struts 11 login
 
Enter UserName.
struts 11 value
 
Click on Hello button.
struts 11 final
 
Download this example.
 
Next Topic: Struts 2 Redirect result type with example.
Previous Topic: Struts 2 custom interceptor with example.

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