In this tutorial, we will see the use of push tag of struts2 framework. The push tag push a value onto the to of stack. So it can access easily by using first-level of OGNL expression language.
Create action classes:
package com.dineshonjava.struts2.action;
import com.opensymphony.xwork2.ActionSupport;
/**
* @author Dinesh Rajput
*
*/
public class DataTagAction extends ActionSupport {
private static final long serialVersionUID = -7744420104547018874L;
public String execute() {
return SUCCESS;
}
}
Create Bean class:
UserBean.java
package com.dineshonjava.struts2.bean;
/**
* @author Dinesh Rajput
*
*/
public class UserBean {
private String userName = "Dinesh Rajput";
private String userAge = "27";
private String userPhone = "9876543210";
private String userAddress = "Noida";
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserAge() {
return userAge;
}
public void setUserAge(String userAge) {
this.userAge = userAge;
}
public String getUserPhone() {
return userPhone;
}
public void setUserPhone(String userPhone) {
this.userPhone = userPhone;
}
public String getUserAddress() {
return userAddress;
}
public void setUserAddress(String userAddress) {
this.userAddress = userAddress;
}
}
Create views
Let us have success.jsp with the following content:
<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<STYLE type="text/css">
b{color: blue;}
</STYLE>
<title>Push Data Tag Struts2 | dineshonjava.com</title>
</head>
<body>
<h1><span style="background-color: #FFFFcc">Property Data Tags Example!</span></h1>
<hr/><b>Simple </b><br/><br/>
<s:bean name="com.dineshonjava.struts2.bean.UserBean" var="userBean">
Name : <s:property value="#userBean.userName"/><br/>
Age : <s:property value="#userBean.userAge"/><br/>
Phone : <s:property value="#userBean.userPhone"/><br/>
Address : <s:property value="#userBean.userAddress"/>
</s:bean>
<hr/><b>Using push tag to display</b><br/><br/>
<s:push value="#userBean">
Name : <s:property value="userName"/><br/>
Age : <s:property value="userAge"/><br/>
Phone : <s:property value="userPhone"/><br/>
Address : <s:property value="userAddress"/>
</s:push>
</body>
</html>
Configuration Files
Your struts.xml should look like:
<?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>
<constant name="struts.enable.DynamicMethodInvocation" value="false" />
<constant name="struts.devMode" value="false" />
<constant name="struts.custom.i18n.resources" value="myapp" />
<package name="default" extends="struts-default" namespace="/">
<action name="pushtag" class="com.dineshonjava.struts2.action.DataTagAction">
<result name="success">/success.jsp</result>
</action>
</package>
</struts>
Your web.xml should look like:
<?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_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>Struts2DataTag</display-name>
<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>
Right click on the project name and click Export > WAR File to create a War file. Then deploy this WAR in the Tomcat’s webapps directory. Finally, start Tomcat server and try to access
URL http://localhost:8080/doj/pushtag.
This will give you following screen:
Download Source Code
PushDataTagExample.zip
