List of beans returning empty

[Vic Hood]

Hi all,
Im trying to fetch a list of beans from my servlet ,im being able to print this list in the servlet ,.Im using jstl tags to rpint the list in the jsp.However when i try fetching the same list of beans in my jsp , it returns a null.ie. the list is shown as empty .Any idea as to where i could be going wrong?
This is my jsp code fragment.

 <c:forEach var="dl"  items="${dao.domList}">
        <tr>
          <td>${dl.code}</td>
          <td>${dl.description}</td>
        </tr>
      </c:forEach>

my server side code

 */
		public void setDomList(ArrayList domList) {
			this.domList = domList;
		}
		public List getDomList()throws Exception {
....
....// logic to get domList
return domList
}

[Prasanna Soundarapandiyan]

could you please provide the jsp form tag code? and also the have you checked whether you are adding the list to your action form? Provide the information what is the dao that you used in your code.

if possible place your jsp and servlet

[Vic Hood]

I dont understand what you mean by action form?
Im using a set of beans ,jsp and a servlet controlling class.
The Link to my jsp is below..
http://pastebin.com/embed_iframe.php?i=4L56dsAe
And my relevant servlet code is below.

public class DAO extends HttpServlet{
..

@SuppressWarnings("rawtypes")
						public ArrayList dtList;// List to store the domaintype beans.
						@SuppressWarnings("rawtypes")
						public ArrayList domList;
						int domainType_Oid;
						@SuppressWarnings("rawtypes")
						//public List domList1;
						int objid;
						String setDtID;
						String code=null;
						String description=null;
						String ObjID=null;
						String Dtype=null;
						String statusActive=null;
						String statusEdit=null;
						boolean active;
						boolean edit;
						public List<Integer> chkList=new ArrayList();
...
..public void setDomList(ArrayList domList) {
			this.domList = domList;
		}
		public List getDomList()throws Exception {

		if(domainType_Oid!=0 && domainType_Oid!=-1){
		int dt_oid=domainType_Oid;
		Connection con = null;
		PreparedStatement stmt = null;
		ResultSet rs = null;
		DomainBean domainBean=null;
		System.out.println("The domaintype being accessed by listDomain has dt-oid="+dt_oid);
		System.out.println("Listing records in DAO");
		domList = new ArrayList<DomainBean>();
		try {
			con= DBConnector.getConnection();
			if (con != null){
				System.out.println("Connected");
			String query= "SELECT OBJECTID,CODE,DESCRIPTION,ISEDITABLE, ISACTIVE FROM DOMAIN WHERE DOMAINTYPE_OID='"+dt_oid+"' ORDER BY DOMAINTYPE_OID,OBJECTID " ;
			System.out.println(query);
			stmt = con.prepareStatement(query);
			
			rs = stmt.executeQuery();
			while (rs.next()){
				System.out.println("In While");
				domainBean= new DomainBean();
				domainBean.setObjid(rs.getInt("OBJECTID"));
				System.out.println("The value of Objid"+domainBean.getObjid());
				domainBean.setCode(rs.getString("CODE"));
				if (rs.getString("ISACTIVE").equals("1"))
					domainBean.setstatusActive("Yes");
				if (rs.getString("ISACTIVE").equals("0"))
					domainBean.setstatusActive("No");
				if (rs.getString("ISEDITABLE").equals("1"))
					domainBean.setstatusEdit("Yes");
				if (rs.getString("ISEDITABLE").equals("0"))
					domainBean.setstatusEdit("No");
				domainBean.setDescription(rs.getString("DESCRIPTION"));
				System.out.println("The value of Code"+domainBean.getCode());
				System.out.println("The value of Description"+domainBean.getDescription());
				System.out.println("The value of Status Active"+domainBean.getstatusActive());
				domList.add(domainBean);
				System.out.println("The size of domList is"+domList.size());
			}
//				System.out.println("Objectid in DAO-ListDomain  "+domainBean.getObjid());
					}
			}catch (SQLException sqe) {
				sqe.printStackTrace();

			} finally {
				DBConnector.closeResultSet(rs);
				DBConnector.closeStatement(stmt);
				DBConnector.closeConnection(con);
			}
			
			
		}

			
		return domList;
		}

/*	This function acts as the flow control for the entire web application.
 * 	Upon clicking submit from the jsp , this function is called. At this point,
 * 	a bean of the DomainBean class is passed to it and processed.
 */
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{

				HttpSession session=request.getSession();
				response.setContentType("text/html");
				PrintWriter pw = response.getWriter();
				DomainBean bean=new DomainBean();
			    Dtype=request.getParameter("selectedval");
				ObjID=request.getParameter("selectedID");
				code=request.getParameter("code");
				description =request.getParameter("description");
				statusActive=request.getParameter("statusActive");
				statusEdit=request.getParameter("statusEdit");
				//System.out.println("The ObjID from Main.jsp"+ObjID);	
				if (!"".equalsIgnoreCase(Dtype) && null != Dtype)  {  
		            setDtID = String.valueOf(Dtype);  
		            System.out.println("setting Domain To"+setDtID);
		        } else {  
		            setDtID = "-1";  
		            System.out.println("Setting Domain to undefined value"+setDtID);
		        }  
									

			domainType_Oid=Integer.parseInt(setDtID);
			System.out.println("the domaintype oid selected is"+domainType_Oid);	
						// End of Dtype.
				
/* The fragment below is intended to ensure that when the page is first submitted for insert ,
 * the value obtained from the hidden field is blank or "" so a check is made to avoid a NumberException.
 */									
							if(ObjID!=""){
								objid=Integer.parseInt(ObjID);	
							}
							
				System.out.println("The integer value of objid"+objid);
			
			    active = request.getParameter("statusActive") == null ? false : true;  
			    edit = request.getParameter("statusEdit") == null ? false : true;     
			    															
			    request.setAttribute("setDtID", setDtID);  
			    request.setAttribute("domainType_Oid", domainType_Oid);
			    try {
			    	request.setAttribute("domList", domList);
					getDomList();
					
				} catch (Exception e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
			    RequestDispatcher rd = request.getRequestDispatcher("POC.jsp");
			    rd.forward(request, response);
			    bean.setDomainTypeOid(domainType_Oid);
			  
		
		
			System.out.println("This belongs to domain number--"+domainType_Oid);
			if(objid!=0){		//ctrl value to be passed as objid(domain) from the jsp side.
			try {
				obtainData(objid);
				
				//if((bean.getCode()=="")&&(bean.getDescription()=="")&&(bean.getActive()==false)&&(bean.getEdit()==false)){
					//deleteDB(bean);
			//}
				//else{
					updateDB(bean);
					System.out.println("Update being called");
			//	}
					if(domList.size()!=0)
				getDomList();
			
			} catch (Exception e) {
				// TODO Auto-generated ca	tch block
				e.printStackTrace();
			}
		
		}
					else
					
						try {
				 //if((bean.getCode()!=" "||bean.getCode()!=null )&&(bean.getDescription()!= " "||bean.getDescription()!=null )){											
							 if((bean.getActive()!=false)&&(bean.getEdit()!=false)){
								 System.out.println("Insert being called");
								 InsertionDB(bean);		
							 }
							 if(domList.size()!=0)
					getDomList();
					} catch (Exception e) {
						// TODO Auto-generated catch block
												e.printStackTrace();
											}
										
}
...

.
Thank you for replying.

[Prasanna Soundarapandiyan]

in the doPost() , you have added the domList directly to the request, but while reading in jsp, it has been trying to read from dao.domList, Please try readin the domList directly inside the c:forEach.

<c:forEach var="dl" items="${domList}">

[Vic Hood]

Hi Prasanna,
Thank you for replying . That worked!
However, a doubt, I use dao.dtList in order to generate a dropdown , i dont set it in the request either ,it works , then why doesnt the same apply here?