How to send List from jsp to action class

Question

hi,
i m fetching list from database and showing to jsp as follows:
user can update that list i need to collect that updated list in next action class but i m not able to do that. can anybody suggest me any solution the code i m using is as follows:
<html:form action="/myUpdate">
<table>
<tr>
     <td>
          <label><input type="text" property="name" name="name" value=""/></label>
     </td>
</tr>
<logic:iterate id="address" name="info" property="addressList" indexId="rowindex">
     <tr>
     <td>
     <input type="text" value="" name="address[<bean:write name="rowindex"/>].houseno" />
     </td>
     <td>
     <input type="text" value="" name="address[<bean:write name="rowindex"/>].roadname" />
     </td>
     <td>
     <input type="text" value="" name="address[<bean:write name="rowindex"/>].city" />
     </td>
     <td>
     <input type="text" value="" name="address[<bean:write name="rowindex"/>].state" />
     </td>
     <td>
     <input type="text" value="" name="address[<bean:write name="rowindex"/>].country" />
     </td>
     </tr>
     </logic:iterate>
<tr>
     <html:submit/>
</tr>
</table>
</html:form>
here in privious action i m settting bean object in session with name 'info'. it is fetching data and disply it correctly but when i m trying to get this updated data in myUpdate action i m not getting list element.

Answer 1

--------------- MyBean.java----------------------
package form;
import java.util.Iterator;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.log4j.Logger;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
* @author Sushant.Raut
public class MyBean extends ActionForm {
     Logger log = Logger.getLogger(this.getClass());
     /* (non-Javadoc)
      * @see org.apache.struts.action.ActionForm#reset(org.apache.struts.action.ActionMapping, javax.servlet.http.HttpServletRequest)
     @Override
     public void reset(ActionMapping mapping, HttpServletRequest request) {
          // TODO Auto-generated method stub
          super.reset(mapping, request);
          this.name = "";
     public String toString()
          System.out.println("name : " + this.name );
          for(Iterator<Address> iterator = addressList.iterator(); iterator.hasNext();)
               Address address = (Address)iterator.next();
               System.out.println("city : " + address.getCity());
          return null;
     private static final long serialVersionUID = 1L;
     private String name;
     private List<Address> addressList;
      * @return the names
     public MyBean()
          log.info("Bean Construtor is called.");
          System.out.println("MyBean:::::constructor is called.");
     public String getName() {
          log.info("Bean getName() is called");
          return name;
      * @param names the names to set
     public void setName(String name) {
          this.name = name;
          log.info("Bean setName() is called");
      * @return the address
     public List<Address> getAddressList() {
          log.info("Bean getAddressList() is called");
          return addressList;
      * @param address the address to set
     public void setAddressList(List<Address> address) {
          log.info("Bean setAddressList() is called");
          this.addressList = address;
     public Address getAddress(int index)
          log.info("Bean getAddress(int index) is called");
          while(index >= addressList.size())
               addressList.add(new Address());
          return this.addressList.get(index);
     public void setAddress(int index, Address address)
          log.info("Bean setAddress(int index, Address address)) is called");
          this.addressList.add(index, address);
}------------- Address.java------------
package form;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionMapping;
* @author Sushant.Raut
public class Address {
     private String houseno;
     private String roadname;
     private String city;
     private String state;
     private String country;
     public Address(){}
      * @return the houseno
     public String getHouseno() {
          return houseno;
      * @param houseno the houseno to set
     public void setHouseno(String houseno) {
          this.houseno = houseno;
      * @return the roadname
     public String getRoadname() {
          return roadname;
      * @param roadname the roadname to set
     public void setRoadname(String roadname) {
          this.roadname = roadname;
      * @return the city
     public String getCity() {
          return city;
      * @param city the city to set
     public void setCity(String city) {
          this.city = city;
      * @return the state
     public String getState() {
          return state;
      * @param state the state to set
     public void setState(String state) {
          this.state = state;
      * @return the country
     public String getCountry() {
          return country;
      * @param country the country to set
     public void setCountry(String country) {
          this.country = country;
     public void reset(ActionMapping mapping, HttpServletRequest request)
          this.city = "";
          this.country = "";
          this.houseno = "";
          this.roadname = "";
          this.state = "";
}------ MyAction.java------
package action;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import form.Address;
import form.MyBean;
* @author Sushant.Raut
public class MyAction extends Action {
     Logger log = Logger.getLogger(this.getClass());
     public ActionForward execute(ActionMapping mapping, ActionForm form,
               HttpServletRequest request, HttpServletResponse response)throws Exception{
          MyBean myBean = new MyBean();
          log.info("Bean is Initialised.");
          String name = "sushant";
          Address address = new Address();
          address.setCity("city1");
          address.setCountry("India");
          address.setHouseno("1111");
          address.setRoadname("xyz Road");
          address.setState("MH");
          Address address1 = new Address();
          address1.setCity("Hyderabad");
          address1.setCountry("India");
          address1.setHouseno("2222");
          address1.setRoadname("ABC Road");
          address1.setState("AP");
          List<Address> addressSet = new ArrayList<Address>();
          addressSet.add(address);
          addressSet.add(address1);
          myBean.setName(name);
          myBean.setAddressList(addressSet);
          request.getSession().setAttribute("info", myBean);
          log.info("Bean is bound to session.");
          System.out.println("MyBean object is bound to session.");
          System.out.println(myBean);
          return mapping.findForward("success");
}-------- show.jsp-----------
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
<!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>
     <html:form action="/myUpdate">
          <table>
               <tr>
                    <td>
                         <label><html:text property="name" name="info"/></label>
                    </td>
               </tr>
               <logic:iterate id="address" name="info" property="addressList" indexId="rowindex">
                    <tr>
                         <td>
                              <html:text property="houseno" name="address" indexed="true"/>
                         </td>
                         <td>
                              <html:text property="roadname" name="address" indexed="true"/>
                         </td>
                         <td>
                              <html:text property="city" name="address" indexed="true"/>
                         </td>
                         <td>
                              <html:text property="state" name="address" indexed="true"/>
                         </td>
                         <td>
                              <html:text property="country" name="address" indexed="true"/>
                         </td>
                    </tr>
               </logic:iterate>
               <tr>
                    <html:submit title="Submit"/>
               </tr>
          </table>
     </html:form>
</body>
</html>