iterate problem in struts2

i am not able to iterate myList. Its not showing any value in struts2.

package net.roseindia;
import com.opensymphony.xwork2.ActionSupport;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.interceptor.ServletRequestAware;
import java.util.*;
import java.sql.*;

public  class Traverse  extends ActionSupport implements ServletRequestAware {

HttpServletRequest request;
    private String hiddenType = null;
    private String country = null;
    private String city = null;
    Map application;
    private List<User> myList;
    
    public void setServletRequest(HttpServletRequest request)
    {
    	this.request=request;
    }
    
    public void setApplication(Map application)
    {
    	this.application=application;
    }
    
    public String getHiddenType() {
        return hiddenType;
    }

public void setHiddenType(String hiddenType) {
        this.hiddenType = hiddenType;
    }
    
    public String getCountry() {
        return country;
    }

public void setCountry(String country) {
        this.country = country;
    }
    
    public String getCity() {
        return city;
    }

public void setCity(String city) {
        this.city = city;
    }
    
    public String showFlats()  throws Exception {
    
        String typeDisp="F";
        request.setAttribute("type",typeDisp);
     	return SUCCESS;
 	}
 	
 	public String showSearchFlats()  throws Exception {
    
        request.setAttribute("type",hiddenType);
        
        
      String url = "jdbc:mysql://localhost:3306/";
      String dbName = "WEBDB";
      String driverName = "org.gjt.mm.mysql.Driver";
      String userName = "root";
      String password = "root";
      Connection con=null;
      Statement stmt=null;	
      ResultSet rst=null;
      
      Class.forName(driverName).newInstance();
      con=DriverManager.getConnection(url+dbName, userName, password);
      
      try{
      stmt=con.createStatement();
     
      rst=stmt.executeQuery("SELECT F_NAME,L_NAME,CONTACT_NO,EMAIL,COUNTRY,CITY,ADDR,DESCR,PEOPLE_ALLOWED,MIN_STAY,RENT,DEPOSIT FROM WEBDB.FLAT_DTLS");
      
      myList=new ArrayList<User>();
      
      if(rst.next())   
      {   
        String firstName=rst.getString(1);
        String lastName=rst.getString(2);
        String contactNumber=rst.getString(3);
        String email=rst.getString(4);
        String countryGrid=rst.getString(5);
        String cityGrid=rst.getString(6);
        String address=rst.getString(7);
        String desc=rst.getString(8);
        String peopleAllowed=rst.getString(9);
        String minStay=rst.getString(10);
        String rent=rst.getString(11);
        String deposit=rst.getString(12);

User user=new User();           
        user.setFirstName(firstName);
        user.setAddress(address);
        user.setDescription(desc);
        user.setPeopleAllowed(peopleAllowed);
        user.setRent(rent);
        
        myList.add(user);
        
      }   
      else  
      {   
       System.out.println("Result was empty");   
      }  
     }catch(Exception ex){
    	ex.printStackTrace();
     }
    return SUCCESS;
 }

}

Nothing is getting displayed on line 99.

<%@ taglib prefix="s" uri="/struts-tags" %>
<%@ page language="java" contentType="text/html" import="java.util.*"%>
<%@ page language="java" import="java.sql.*"%>
<html>
  <head>
    <s:head theme="ajax" debug="true"/>
	<link href="<s:url value="/css/main.css"/>" rel="stylesheet"
          type="text/css"/>
    <SCRIPT src="/struts2tutorial/javascript/commonValidations.js"  language="javascript"> </SCRIPT>
    <script type='text/javascript' src="/struts2tutorial/javascript/calendar.js"></script>
  </head>

<SCRIPT LANGUAGE="javascript"> 
 function flatDetailsWindow(SrNo)
 { 
	document.form0.hiddenFlatsID.value=SrNo;   } 
</SCRIPT>
 
  <body class="Table_Background">
  <s:form action="showSearchFlats" method="POST">
  <table class="Table_Border Table_Background" cellspacing="0" cellpadding="0" border="0" width="100%" align="center">
   <TR>
    <td align="left" width="100%">
     <font color="#000066" class = LblFnt align="left"> Welcome <b><s:property value="#session.user" default="Guest" /></b>, to the Search Flats screen. </font>
	</td>
  </TR>
 
  <TR>
    <TD align="right" width="100%">
   	 <a href="roseindia/showHome.action">
     <font color="#000066" class = LblFnt align="right">Home </font></a>|
     <a href="roseindia/doLogout.action">
     <font color="#000066" class = LblFnt align="right">logout </font></a>|
     <a href="roseindia/showPostAdsFlats.action">
	 <font color="#000066" class = LblFnt align="right">Post Ads</font></a>|
     <a href="roseindia/showAboutUs.action">
     <font color="#000066" class = LblFnt align="right">About Us </font></a>|
     <a href="roseindia/showHelp.action">
     <font color="#000066" class = LblFnt align="right">Help </font></a>
    </TD>
  </TR>
  
 <TR></TR><TR></TR><TR></TR><TR></TR><TR></TR>
 <TR></TR><TR></TR><TR></TR><TR></TR><TR></TR>

<TR>
	  <TD width="5%"></TD>
	  <TD width="20%"><FONT class = LblFnt><font color = "red"></font>   From Date.</font></TD>
	  <TD width="25%">:<input type = "text" name = "fromDate" title = "From Date"  class = "TextBox_BorderDDMM" id = "paidOn" maxlength="10" size = 11 style = "WIDTH: 70px" onkeyup="putAutoSlash(fromDate);" onkeypress = "allowDigitSlash(fromDate);" onblur = "checkDate(fromDate);" />
	  <a href = "javaScript:show_calendar('form0.fromDate')"><img src = "/struts2tutorial/images/cal.gif" id = 'toDate' width = '10' height = '10' border = '0' align = "absmiddle"></a>
	  </TD>
	  
	  <TD width="20%"><FONT class = LblFnt>   To Date</font></TD>
	  <TD width="25%">:<input type = "text" name = "toDate" title = "To Date"  class = "TextBox_BorderDDMM" id = "paidOn" maxlength="10" size = 11 style = "WIDTH: 70px" onkeyup="putAutoSlash(toDate);" onkeypress = "allowDigitSlash(toDate);" onblur = "checkDate(toDate);"/>
	  <a href = "javaScript:show_calendar('form0.toDate')"><img src = "/struts2tutorial/images/cal.gif" id = 'toDate' width = '10' height = '10' border = '0' align = "absmiddle"></a>
	  </TD>
	  <TD width="5%"></TD>
  </TR>     
  
   <TR>
	 <TD></TD>
	 <TD><font Class="LblFnt">   Country</font></TD>
	 <TD>:<input type = "text" name = "country" title = "Country"  class = "TextBox_Border" id = "country" maxlength="20" size = 11 style = "WIDTH: 70px"/></TD>
  
	 <TD><font Class="LblFnt">   City</font></TD>
	 <TD>:<input type = "text" name = "city" title = "City"  class = "TextBox_Border" id = "city" maxlength="20" size = 11 style = "WIDTH: 70px"/></TD>
	 <TD></TD>
  </TR>

<TR>
   <TD colspan="6" align="left"><font color="#000066" class = LblFnt><B>           Flats Available</B></FONT>
   </TD> 
 </TR>

<TR>
    <TD align="right" width="100%">
     <a href="roseindia/showHome.action">
     <font color="#000066" class = LblFnt align="right">Home </font></a>|
	 <a href="roseindia/doLogout.action">
     <font color="#000066" class = LblFnt align="right">logout </font></a>|
	 <a href="roseindia/showPostAdsFlats.action">
	 <font color="#000066" class = LblFnt align="right">Post Ads</font></a>|
     <a href="roseindia/showAboutUs.action">
     <font color="#000066" class = LblFnt align="right">About Us </font></a>|
     <a href="roseindia/showHelp.action">
     <font color="#000066" class = LblFnt align="right">Help </font></a>
    </TD>
  </TR>
 </TABLE>
</TD>
</TR>

</TABLE>
</form>
</s:form>
</body>
</html>

package net.roseindia;
import com.opensymphony.xwork2.ActionSupport;

public  class User  extends ActionSupport {
  
  private String firstName = null;
	private String address = null;
  	private String description = null;
	private String peopleAllowed = null;
	private String rent = null;
       
    public String getFirstName() {
        return firstName;
    }

public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    
    public String getAddress() {
        return address;
    }

public void setAddress(String address) {
        this.address = address;
    }
    
    public String getDescription() {
        return description;
    }

public void setDescription(String description) {
        this.description = description;
    }
    
    public String getPeopleAllowed() {
        return peopleAllowed;
    }

public void setPeopleAllowed(String peopleAllowed) {
        this.peopleAllowed = peopleAllowed;
    }
    
    public String getRent() {
        return rent;
    }

public void setRent(String rent) {
        this.rent = rent;
    }
  
}

Please include only relevant sections of code and configuration; extraneous information just clouds the issue.

"myList" is not exposed through the action, hence is not available in the JSP.

Also, while it's very difficult to read and discover, your HTML is malformed.

struts.xml entry is as follows. How to expose myList through action.

SearchFlats.jsp

Traverse.java

String url = "jdbc:mysql://localhost:3306/";
      String dbName = "WEBDB";
      String driverName = "org.gjt.mm.mysql.Driver";
      String userName = "root";
      String password = "root";
      Connection con=null;
      Statement stmt=null;	
      ResultSet rst=null;
      
      Class.forName(driverName).newInstance();
      con=DriverManager.getConnection(url+dbName, userName, password);
      
      try{
      stmt=con.createStatement();
     
      rst=stmt.executeQuery("SELECT F_NAME,L_NAME,CONTACT_NO,EMAIL,COUNTRY,CITY,ADDR,DESCR,PEOPLE_ALLOWED,MIN_STAY,RENT,DEPOSIT FROM WEBDB.FLAT_DTLS");
      
      myList=new ArrayList<User>();
      
      if(rst.next())   
      {   
        String firstName=rst.getString(1);
        String lastName=rst.getString(2);
        String contactNumber=rst.getString(3);
        String email=rst.getString(4);
        String countryGrid=rst.getString(5);
        String cityGrid=rst.getString(6);
        String address=rst.getString(7);
        String desc=rst.getString(8);
        String peopleAllowed=rst.getString(9);
        String minStay=rst.getString(10);
        String rent=rst.getString(11);
        String deposit=rst.getString(12);

User user=new User();           
        user.setFirstName(firstName);
        user.setAddress(address);
        user.setDescription(desc);
        user.setPeopleAllowed(peopleAllowed);
        user.setRent(rent);
        
        myList.add(user);

User.java

package net.roseindia;
import com.opensymphony.xwork2.ActionSupport;

public  class User  extends ActionSupport {
  
  private String firstName = null;
	private String address = null;
  	private String description = null;
	private String peopleAllowed = null;
	private String rent = null;
       
    public String getFirstName() {
        return firstName;
    }

public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    
    public String getAddress() {
        return address;
    }

public void setAddress(String address) {
        this.address = address;
    }
    
    public String getDescription() {
        return description;
    }

public void setDescription(String description) {
        this.description = description;
    }
    
    public String getPeopleAllowed() {
        return peopleAllowed;
    }

public void setPeopleAllowed(String peopleAllowed) {
        this.peopleAllowed = peopleAllowed;
    }
    
    public String getRent() {
        return rent;
    }

public void setRent(String rent) {
        this.rent = rent;
    }
  
}

Hrishikesh Maluskar wrote:How to expose myList through action

Create a getter method for myList in your Traverse class i.e. add this method to your Traverse class

thanks , i am able to display values on the JSP.
Is there any other method to display the values from arraylist without using iterator.

You can use JSTL's <c:forEach> tag.

Or a scriptlet.