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struts 1x Lookup Dispatch Action with example program In Eclipse

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 LookupDispatchAction Class

  • LookupDispatchAction same as a  DispatchAction.
  • Here  will use more methods to control one action,one model,one controller,one view page.
  • For example  will use more button in one page like add,delete, update to control one controller and model class.
  • In this class UserAction extends org.apache.struts.actions.LookupDispatchAction. Normal Action class invoke execute() method.But in this This class not invoked execute() method.It will be  invoked separate method  like as method=”add” ,method=”delete”,method=”update”  which  the method  will be use the parameter in the view page.
  • In this will use Properties file  will be  change the button values future . 

Step by Step tutorial on running  your  LookupdispatchAction Struts application in Tomcat5.5 with Eclipse IDE

Step – 1 Creating Dynamic web Project

Step – 2 LookupdispatchAction STRUTS folder structure

Step – 3 Creating your  LookupdispatchAction  Struts program(Controller & Model)

Step – 4 Creating web.xml for LookupdispatchAction struts application

Step – 5 Creating Struts-config.xml

Step – 6 LookupdispatchAction Struts view page

Step – 7 How to Add server in  LookupdispatchAction Struts application

Step – 8 OutPut  for  Running  LookupdispatchAction Struts application

 SOURCE CODE

 

Step – 1 Creating Dynamic web Project

Start Eclipse and goto File -> New -> Project -> Dynamic Web Project

Step – 2 LookupdispatchAction STRUTS folder structure


 Lib Folder

Download The Following TLD files  and paste into WEB-INF

ApplicationResource.properties

Following is the list of required JAR files to be added in Java Class Path of your project. Download displaytag JAR files from

JAR FILES + TLD FILES

Step – 3 Creating your  LookupdispatchAction  Struts program(Controller & Mymodel& properties)

UserAction.java

package Com.Candidjava;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.actions.LookupDispatchAction;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;
import java.util.*;

public class UserAction extends LookupDispatchAction {

	/* forward name="success" path="" */
	private final static String SUCCESS = "success";

	protected Map getKeyMethodMap() {
		Map map = new HashMap();
		map.put("UserForm.add", "add");
		map.put("UserForm.update", "update");
		map.put("UserForm.delete", "delete");
		return map;
	}

	public ActionForward add(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		UserForm userForm = (UserForm) form;
		userForm.setMessage("Inside add user method.");
		return mapping.findForward(SUCCESS);
	}

	public ActionForward update(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		UserForm userForm = (UserForm) form;
		userForm.setMessage("Inside update user method.");
		return mapping.findForward(SUCCESS);
	}

	public ActionForward delete(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		UserForm userForm = (UserForm) form;
		userForm.setMessage("Inside delete user method.");
		return mapping.findForward(SUCCESS);
	}

}

UserForm.java

package Com.Candidjava;

import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionForm;

public class UserForm extends ActionForm {

	private String message;

	public String getMessage() {
		return message;
	}

	public void setMessage(String message) {
		this.message = message;
	}

}

ApplicationResource.properties


UserForm.add = Add

UserForm.update = Update

UserForm.delete = Delete

Step – 4 Creating web.xml for LookupdispatchAction struts application

web.xml

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>

	<display-name>Struts Blank Application</display-name>

	<servlet>
		<servlet-name>action</servlet-name>
		<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
		<init-param>
			<param-name>config</param-name>
			<param-value>/WEB-INF/struts-config.xml</param-value>
		</init-param>
		<init-param>
			<param-name>debug</param-name>
			<param-value>2</param-value>
		</init-param>
		<init-param>
			<param-name>detail</param-name>
			<param-value>2</param-value>
		</init-param>
		<load-on-startup>2</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>action</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>

	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>
	<taglib>
		<taglib-uri>/tags/struts-html</taglib-uri>
		<taglib-location>/WEB-INF/struts-html.tld</taglib-location>
	</taglib>
	<taglib>
		<taglib-uri>/tags/struts-bean</taglib-uri>
		<taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
	</taglib>

</web-app>

Step – 5 Creating Struts-config.xml

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
          "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">

<struts-config>
	<form-beans>
		<form-bean name="UserForm" type="Com.Candidjava.UserForm" />

	</form-beans>

	<action-mappings>
		<action input="/index.jsp" name="UserForm" parameter="method"
			path="/UserAction" scope="session" type="Com.Candidjava.UserAction">
			<forward name="success" path="/index.jsp" />
		</action>

	</action-mappings>

	<message-resources parameter="Com.Candidjava.ApplicationResource" />

</struts-config>

Step – 6 LookupdispatchAction Struts view page 

index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
	pageEncoding="ISO-8859-1"%>
<%@taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
<%@taglib uri="/WEB-INF/struts-html-1.1.tld" prefix="html"%>
<!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>Insert title here</title>
</head>
<body bgcolor="pink">
<html:form action="UserAction.do">
	<table>
		<tr>
			<td><bean:write name="UserForm" property="message" /></td>
		</tr>
		<tr>
			<td><html:submit property="method">
				<bean:message key="UserForm.add" />
			</html:submit></td>
		</tr>
		<tr>
			<td><html:submit property="method">
				<bean:message key="UserForm.update" />
			</html:submit></td>
		</tr>
		<tr>
			<td><html:submit property="method">
				<bean:message key="UserForm.delete" />
			</html:submit></td>
		</tr>
	</table>
</html:form>

</body>
</html>

Step – 7 How to Add server in  LookupdispatchAction  Struts application

Window –>show view—->servers—>add new–>          

Select ther version which you installed in your System

How to run the Project:

Right click on project name———–>click Run As —> Run On Server

Step – 8 OutPut  for  Running  LookupdispatchAction Struts application:

DOWNLOAD + SOURCE CODE                                                                                                                                                                                                               BACK

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