SwitchAction in Struts1.x application

what is Switch Action:

The SwitchAction class provides a means to switch from a resource in one module to another resource in a different module. SwitchAction is useful only if you have multiple modules in your Struts application and maintain multiple struts-config.xml. The SwitchAction class can be used as is, without extending.

Step1: developa index.jsp form and write the code like..

<%@taglib uri="http://struts.apache.org/tags-html" prefix="html" %>

<html:link action="switch?prefix=/student&page=/student.jsp">Student</html:link>  

<html:link action="switch?prefix=/college&page=/college.jsp">College</html:link>   

<html:link action="switch?prefix=/company&page=/company.jsp">Company</html:link>

Step2: develop a student module

a).create Action class for Student and create FormBean object in action class

package com.dustbin.student.controller;

import com.dustbin.student.formbean.StudentFormBean;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

public class StudentAction extends org.apache.struts.action.Action {

private static final String SUCCESS = "success";

@Override

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws Exception {

StudentFormBean sfb=(StudentFormBean)form;

return mapping.findForward(SUCCESS); }}

struts-config.xml file

<action-mappings>

<action path="/switch" scope="request" type="org.apache.struts.actions.SwitchAction"/>

</action-mappings>

Configuring the action class and formbean class into struts-config-student.xml file

<struts-config>

<form-beans>

<form-bean name="stu" type="com.dustbin.student.formbean.StudentFormBean"/>

</form-beans>

<action-mappings>

</action>

</action-mappings>

</struts-config>

And this struts-config-student.xml ,struts-config-college.xml and struts-config-company.xml file configured into web.xml as shown below

<?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">

<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>config/company</param-name>

<param-value>/WEB-INF/struts-config-company.xml</param-value>

</init-param>

<init-param>

<param-name>config/student</param-name>

<param-value>/WEB-INF/struts-config-student.xml</param-value>

</init-param>

<init-param>

<param-name>config/college</param-name>

<param-value>/WEB-INF/struts-config-college.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>

<session-config>

<session-timeout>

</session-timeout>

</session-config>

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

</web-app>

b).developa formbean class for form

package com.dustbin.student.formbean;

import com.dustbin.college.formbean.*;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.ActionMessage;

public class StudentFormBean extends org.apache.struts.action.ActionForm {

private String sid;

private String sname;

private String address;

public String getAddress() {

return address;

}public void setAddress(String address) {

this.address = address;

}

public String getSid() {

return sid;

}

public void setSid(String sid) { this.sid = sid; }

public String getSname() {

return sname;

}public void setSname(String sname) {

this.sname = sname;

}

public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) {

ActionErrors errors = new ActionErrors();

if (getSname() == null || getSname().length() < 1) {

errors.add("cname", new ActionMessage("error.name.required"));

// TODO: add 'error.name.required' key to your resources

}

return errors;

}}

c).develop a student form student.jsp .it was created in student folder must.

<%@taglib uri="http://struts.apache.org/tags-html" prefix="html"%>

<h3>Student Form</h3><br>

<html:form action="student">

Student ID:<html:text property="sid"/><br><br>

Student Name:<html:text property="sname"/><br><br>

Address:<html:text property="address"/><br><br>

<html:submit></html:submit></html:form>

d).success.jsp file for student success

success student...

step 3:develop a college module

a).Action class for college

package com.dustbin.college.controller;

import com.dustbin.college.formbean.CollegeFormBean;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

public class CollegeAction extends org.apache.struts.action.Action {

private static final String SUCCESS = "success";

@Override

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws Exception {

CollegeFormBean cfb=(CollegeFormBean)form;

return mapping.findForward(SUCCESS);

}

Configuration about college action and formbean class into struts-config-college.xml

<struts-config>

<form-beans>

<form-bean name="c" type="com.dustbin.college.formbean.CollegeFormBean"/>

</form-beans>

<action-mappings>

</action> <action path="/Welcome" forward="/welcomeStruts.jsp"/>

</action-mappings>

</struts-config>

Note:already struts-config-college.xml confired into web.xml

b).develop a formbean class for college

package com.dustbin.college.formbean;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.ActionMessage;

public class CollegeFormBean extends org.apache.struts.action.ActionForm {

private String cid;

private String cname;

private String address;

public String getAddress() {

return address;

} public void setAddress(String address) {

this.address = address;

}

public String getCid() {

return cid;

} public void setCid(String cid) {

this.cid = cid;

} public String getCname() {

return cname;

}public void setCname(String cname) {

this.cname = cname;

}public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) {

ActionErrors errors = new ActionErrors();

if (getCname() == null || getCname().length() < 1) {

errors.add("sname", new ActionMessage("error.name.required"));

// TODO: add 'error.name.required' key to your resources

}

return errors;}}

c).develop a college form college.jsp

<%@taglib uri="http://struts.apache.org/tags-html" prefix="html"%>

<h3>College Form</h3><br>

<html:form action="college">

College ID:<html:text property="cid"/><br><br>

College Name:<html:text property="cname"/><br><br>

Address:<html:text property="address"/><br><br>

<html:submit></html:submit></html:form>

d).success page for college form

success college...

step3:develop a company module

a)company module action class

package com.dustbin.company.controller;

import com.dustbin.company.formbean.CompanyFormBean;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

public class CompanyAction extends org.apache.struts.action.Action {

private static final String SUCCESS = "success";

@Override

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws Exception {

CompanyFormBean cfb=(CompanyFormBean)form;

return mapping.findForward(SUCCESS);

}

b).develop a form bean class for company

package com.dustbin.company.formbean;

import com.dustbin.college.formbean.*;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.ActionMessage;

public class CompanyFormBean extends org.apache.struts.action.ActionForm {

private String cid;

private String cname;

private String address;

public String getAddress() {

return address;

} public void setAddress(String address) {

this.address = address;

}

public String getCid() {

return cid;

}public void setCid(String cid) {

this.cid = cid;

}

public String getCname() {

return cname;

}public void setCname(String cname) {

this.cname = cname;

}

public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) {

ActionErrors errors = new ActionErrors();

if (getCname() == null || getCname().length() < 1) {

errors.add("cname", new ActionMessage("error.name.required"));

// TODO: add 'error.name.required' key to your resources

}

return errors;

}}

Configuration about company action and formbean class into struts-config-company.xml

<struts-config>

<form-beans>

<form-bean name="com" type="com.dustbin.company.formbean.CompanyFormBean"/>

</form-beans>

<action-mappings>

</action>

</action-mappings>

</struts-config>

Note:already struts-config-company.xml confired into web.xml

c).develop a company form name company.jsp

<%@taglib uri="http://struts.apache.org/tags-html" prefix="html"%>

<h3>Company Form</h3><br>

<html:form action="company">

Company ID:<html:text property="cid"/><br><br>

Company Name:<html:text property="cname"/><br><br>

Address:<html:text property="address"/><br><br>

<html:submit></html:submit>

</html:form>

d).success page for company form

success company...

Output:

This is style of creating a .jsp programs like fig..student module jsp's are placed into student folder..simillarly college and company....

CLICK HERE FOR WAR FILE DOWNLOAD

CLICK HERE FOR RAR FILE DOWNLOAD

SwitchAction in Struts1.x application

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