• Menu
  • Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

JavaBeat

Java Tutorial Blog

  • Java
    • Java 7
    • Java 8
    • Java EE
    • Servlets
  • Spring Framework
    • Spring Tutorials
    • Spring 4 Tutorials
    • Spring Boot
  • JSF Tutorials
  • Most Popular
    • Binary Search Tree Traversal
    • Spring Batch Tutorial
    • AngularJS + Spring MVC
    • Spring Data JPA Tutorial
    • Packaging and Deploying Node.js
  • About Us
    • Join Us (JBC)
  • Java
    • Java 7
    • Java 8
    • Java EE
    • Servlets
  • Spring Framework
    • Spring Tutorials
    • Spring 4 Tutorials
    • Spring Boot
  • JSF Tutorials
  • Most Popular
    • Binary Search Tree Traversal
    • Spring Batch Tutorial
    • AngularJS + Spring MVC
    • Spring Data JPA Tutorial
    • Packaging and Deploying Node.js
  • About Us
    • Join Us (JBC)

Struts HTML CheckBox Tag ( )

September 9, 2010 //  by Krishna Srinivasan//  Leave a Comment

Struts HTML Tag Library

Struts HTML tag library provides tags which are used to create input forms and HTML user interfaces. The tags in the Struts HTML library form a bridge between a JSP view and the other components of a Web application. Since a dynamic Web application often depends on gathering data from a user, input forms play an important role in the Struts framework. Consequently, the majority of the HTML tags involve HTML forms.

Syntax to use Struts HTML tag library

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

< html:checkbox >

< html:checkbox > -renders a checkbox input field.property should of type boolean and any value should correspond to one of the string which indicate true like “true”,”yes” or “on”.

Example Code for < html:checkbox >

1.Create an Jsp page and name it as checkbox.jsp.It is the Welcome page for a user.

checkbox.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@taglib prefix="html" uri="http://jakarta.apache.org/struts/tags-html" %>
<%@taglib prefix="bean" uri="http://jakarta.apache.org/struts/tags-bean" %>


< html>
    < head>

        < title>HTML CheckBox example </title>
    < head>
    < body>
        < h1 > Struts html:checkbox example </h1>

        < html:form action="/htmlcheckbox">
            < h5 ><bean:write name="checkform" property="error" filter="false"/>
            </h5>
           < b> Check Box:</b> < html:checkbox property="checkvalue"/> < br>
            < html:submit value="Click"/>
            < html:reset/>
        </html:form>
    </body>
</html>

2.Create a Form bean.Form bean is used to hold the properties of the submitted form which is a sub class of ActionForm
checkform.java

package com.myapp.struts;
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 checkform extends org.apache.struts.action.ActionForm {

    private String checkvalue;
    private String error;

    public String getError() {
        return error;
    }

    public void setError() {
        this.error = "< span style='color:red'> Please check the check box</span>";
    }

    public String getCheckvalue() {
        return checkvalue;
    }

    public void setCheckvalue(String checkvalue) {
        this.checkvalue = checkvalue;
    }

    public checkform() {
        super();

    }
}

3.Simple Action class checkaction.java which is a sub class of Action class used to process the user’s request.
chechaction.java

package com.myapp.struts;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;

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


    private final static String SUCCESS = "success";
    private final static String FAILURE = "failure";
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        checkform formBean = (checkform)form;
String val = formBean.getCheckvalue();
if("on".equals(val))
        return mapping.findForward(SUCCESS);
formBean.setError();
return mapping.findForward(FAILURE);
    }
}

4.Create or modify struts config file struts-config.xml with action mappings.Struts-config file contains the information about the configuration of the struts framework to the application.It contains the action mappings which helps to select Action,ActionForm and other information for specific user’s request’s.

<?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="checkform" type="com.myapp.struts.checkform"/>
    </form-beans>

< action-mappings>
        < action name="checkform" path="/htmlcheckbox" scope="request" type="com.myapp.struts.checkaction" validate="false">
        < forward name="success" path="/checkboxoutput.jsp"/>
        < forward name="failure" path="/checkbox.jsp"/>
            </action>
</action-mappings>

	</struts-config>

5.Create another simple Jsp page checkboxoutput.jspwhich is for displaying the output if the check box is checked else return error message.

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>

< html>
    < head>
        < meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        < title> CheckBox OutPut page</title>
    </head>
    < body>
        < h3> Check value is: < bean:write name="checkform" property="checkvalue"/></h3>
    </body>
</html>

6.Building and running the application
Output

Access page:http://localhost:8080/checkbox/

also read:

  • Struts 2.0 Introduction and Validations using Annotations
  • Introduction to Struts Actions
  • What’s new in Struts 2.0?
  • Internationalization and Taglibs in Struts 1.2

Category: StrutsTag: Struts Tags

About Krishna Srinivasan

He is Founder and Chief Editor of JavaBeat. He has more than 8+ years of experience on developing Web applications. He writes about Spring, DOJO, JSF, Hibernate and many other emerging technologies in this blog.

Previous Post: « Spring Python
Next Post: How to Configure Java Messaging Service (JMS) in GlassFish 3 Application Server? »

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Primary Sidebar

Follow Us

  • Facebook
  • Pinterest

FEATURED TUTORIALS

New Features in Spring Boot 1.4

Difference Between @RequestParam and @PathVariable in Spring MVC

What is new in Java 6.0 Collections API?

The Java 6.0 Compiler API

Introductiion to Jakarta Struts

What’s new in Struts 2.0? – Struts 2.0 Framework

JavaBeat

Copyright © by JavaBeat · All rights reserved
Privacy Policy | Contact