How to take values of only selected checkbox in Action class in Struts 2 and JSP

Question

I am displaying 24 checkboxes. I want to get all the values of checked checkboxes in action class and insert it as a new record inside database.Inserting will be done once I succeed in getting the values of checked checkboxes on button click.

I referred this link in which I followed the answer answered by steven sir but with help of that I can display only boolean values but here I want text values of checkboxes selected.

So below is my JSP page.

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
    <%@taglib uri="/struts-tags" prefix="s" %>






        
        
          
          
          
          
            
                
                     
                         
                            Event Name 
                            : 
                             
                        
                         
                            Company Name 
                            : 
                             
                        
                         
                            Contact Person Name 
                            : 
                             
                        
                         
                            Contact 
                            : 
                             
                        
                         
                            Email 
                            : 
                             
                        
                         
                            Event Venue 
                            : 
                             
                        
                         
                            Event Date 
                            : 
                            From :          To :  
                        
                         
                            Event Time 
                            : 
                             
                        
                        
                            License Required 
                            : 
                            
                            Rangabhoomi
                            Fire NOC
                            Fire Engine
                            Premises & NOC
                            Performance
                            PWD
                            Local Police

                            Collector
                            PPL
                            IPRS
                            Traffic
                            Liquor License
                            Ticket Selling License
                            BMC Parking
                            Parking

                            Port Trust
                            Novex
                            Foreign Artist
                            DCP Office
                            Fire Marshal
                            Sale Tax NOC
                            Other
                            Extra
                            Commission

Below is my setters and getters class

package com.ca.pojo;

public class Event {
    public Event() {
        // TODO Auto-generated constructor stub
    }

    private String eventName;
    private String companyName;
    private String contactPerson;
    private String contactNumber;
    private String emailId;
    private String eventVenue;
    private String fromDate;
    private String toDate;
    private String eventTime;
    private String licenserequired;
    
    public String getEventName() {
        return eventName;
    }

    public void setEventName(String eventName) {
        this.eventName = eventName;
    }

    public String getCompanyName() {
        return companyName;
    }

    public void setCompanyName(String companyName) {
        this.companyName = companyName;
    }

    public String getContactPerson() {
        return contactPerson;
    }

    public void setContactPerson(String contactPerson) {
        this.contactPerson = contactPerson;
    }

    public String getContactNumber() {
        return contactNumber;
    }

    public void setContactNumber(String contactNumber) {
        this.contactNumber = contactNumber;
    }

    public String getEmailId() {
        return emailId;
    }

    public void setEmailId(String emailId) {
        this.emailId = emailId;
    }

    public String getEventVenue() {
        return eventVenue;
    }

    public void setEventVenue(String eventVenue) {
        this.eventVenue = eventVenue;
    }

    public String getFromDate() {
        return fromDate;
    }

    public void setFromDate(String fromDate) {
        this.fromDate = fromDate;
    }

    public String getToDate() {
        return toDate;
    }

    public void setToDate(String toDate) {
        this.toDate = toDate;
    }

    public String getEventTime() {
        return eventTime;
    }

    public void setEventTime(String eventTime) {
        this.eventTime = eventTime;
    }

    public String getLicenserequired() {
        return licenserequired;
    }

    public void setLicenserequired(String licenserequired) {
        this.licenserequired = licenserequired;
    }
    
}

Below is my Action class

package com.ca.actions;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import com.ca.database.Database;
import com.ca.pojo.Event;
import com.opensymphony.xwork2.ActionSupport;

public class EventInsertAction extends ActionSupport {

    private String eventId;
    Event event;
    String name;

    public EventInsertAction() {
        // TODO Auto-generated constructor stub
    }

    
    public String getName() {
        return name;
    }


    public void setName(String name) {
        this.name = name;
    }


    public String getEventId() {
        return eventId;
    }

    public void setEventId(String eventId) {
        this.eventId = eventId;
    }

    public Event getEvent() {
        return event;
    }

    public void setEvent(Event event) {
        this.event = event;
    }

    @Override
    public String execute() throws Exception {
        
        System.out.println("Event"+event.getLicenserequired());

        // TODO Auto-generated method stub
        System.out.println("Hi Mahi"+name);

        List ints = new ArrayList();
        int i = 0;

        for (int i1 = 0; i1 < 10000; i1++) {
            ints.add(i1);
        }
        // Collections.shuffle(ints);

        String Id = String.valueOf(ints.get(i++));

        eventId = event.getEventName() + Id;
    
        System.out.println(eventId);
        try {
            Database database = new Database();
            Connection con = database.Get_Connection();
            System.out.println("Driver Loaded");
            PreparedStatement st = con
                    .prepareStatement("insert into event(EVENT_ID,EVENT_NAME,COMPANY_NAME,CONTACT_PERSON,CONTACT_NO,EMAIL_ID,EVENT_VENUE,FROM_DATE,TO_DATE,EVENT_TIME)"
                            + "values(?,?,?,?,?,?,?,?,?,?)");
            st.setString(1, eventId);
            st.setString(2, event.getEventName());
            st.setString(3, event.getCompanyName());
            st.setString(4, event.getContactPerson());
            st.setString(5, event.getContactNumber());
            st.setString(6, event.getEmailId());
            st.setString(7, event.getEventVenue());
            st.setString(8, event.getFromDate());
            st.setString(9, event.getToDate());
            st.setString(10, event.getEventTime());
            st.executeUpdate();
            System.out.println("success");
            con.close();
        } catch (Exception e) {
            System.out.println(e);
        }

        return "success";
    }

    @Override
    public void validate() {
        // TODO Auto-generated method stub
        super.validate();
        if (event.getEventName().isEmpty()) {
            System.out.println("Event Name");
            addFieldError("event.eventName", "Please Enter Event Name ..");
        }
        
        if (event.getCompanyName().isEmpty()) {
            addFieldError("event.companyName", "Please Enter Company Name.. ");
        }
        
        if (event.getContactNumber().isEmpty()) {
            addFieldError("event.contactNumber",
                    "Please Enter Contact Number..");
        } else {
            String expression = "^\+?[0-9\-]+\*?$";
            CharSequence inputStr = event.getContactNumber();
            Pattern pattern = Pattern.compile(expression,
                    Pattern.CASE_INSENSITIVE);
            Matcher matcher = pattern.matcher(inputStr);
            if (!matcher.matches())
                addFieldError("event.contactNumber", "Invalid Contact Number..");

        }
        
        if (event.getContactPerson().isEmpty()) {
            addFieldError("event.contactPerson",
                    "Please Enter Contact Person Name..");
        }
        
        if (event.getEmailId().isEmpty()) {
            addFieldError("event.emailId", "Please Enter Email ID..");
        } else {
            String expression = "^[\w\-]([\.\w])+[\w]+@([\w\-]+\.)+[A-Z]{2,4}$";
            CharSequence inputStr = event.getEmailId();
            Pattern pattern = Pattern.compile(expression,
                    Pattern.CASE_INSENSITIVE);
            Matcher matcher = pattern.matcher(inputStr);
            if (!matcher.matches())
                addFieldError("event.emailId", "Invalid Email Address..");
        }
        
        if (event.getEventVenue().isEmpty()) {
            addFieldError("event.eventVenue", "Please Enter Event Venue..");
        }
        
        if (event.getFromDate().isEmpty()) {
            addFieldError("event.fromDate", "Please Enter Date..");
        }
        
        if (event.getToDate().isEmpty()) {
            addFieldError("event.toDate", "Please Enter To Date..");
        }
        
        if (event.getEventTime().isEmpty()) {
            addFieldError("event.eventTime", "Please Enter Event Time..");
        }

    }

}

Roman C · Accepted Answer

The value attribute should not be empty value="". If you followed the linked answer you have seen that s:checkbox tag is used. When this tag is rendered it provided the field value for both checked and unchecked checkbox. And remarking Dave Newton's notice in his book "It should have values true or false the only viable values for the moment. These are only values that work correctly with checkbox interceptor."

The tag renders a single checkbox . At the time of this writing it only works well with Boolean (or boolean) properties. Attempting to preselect a checkbox with, for example, a string value only works if the string is true or false .

There's an example Struts 2 checkbox example, which is using such fieldValue attribute.

If you want a deep incite into how checkbox interceptor is working you can read not auto populating in struts2 form.

Another example that is using multiple checkboxes Struts 2 multiple check boxes example. Unlike the s:checkbox it doesn't work with any unchecked values and you can map values directly using listKey and listValue attributes.

How to take values of only selected checkbox in Action class in Struts 2 and JSP

Answers (2)

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