Need to pass Hashtable of objects to another jsp page via request or session

Hello DImhoff1,

FirstPage.jsp
--------------------------------------
LinkedList list=new LinkedList();
request.setAttribute("listName",list)

secondpage.jsp
-------------------
LinkedList list=(LinkedList)request.getAttribute("listName");

Regards,

gibu_george

The same thing u can do for HasMap or any other objects also

For some reason that is coming back null on the second page.

The code is:

1st page_____________________________________________________________________

<%@ page import="shopcart.*"%>
<%@ page import="java.sql.*"%>
<%@ page import="java.util.*"%>
<%@ include file="includes/header.jsp"%>
<%@ include file="includes/sub.header.2.column.jsp"%>

<TR>
      <TD width="182" valign="top">
            <TABLE width="100%">
                  <TR>
                        <%@ include file="includes/menu.jsp"%>
                  </TR>
                  <TR>
                        <%@ include file="includes/menu.login.jsp"%>
                  </TR>
            </TABLE>
      </TD>
      <TD width="30" rowspan="3"></TD>
      <TD valign="top">

            <TABLE border="1" width="100%">
                  <TR>
                        <TD colspan="7">
                              <FONT color="#3333CC">
                                    <H1>
                                          Please confirm your order
                                    </H1>
                              </FONT>
            <%String[] checkboxVals = request.getParameterValues("productid");
            int total = 0;
            
                  String myQuery = "SELECT * FROM product,fuelsource WHERE (";
                  for(int i=0;i<checkboxVals.length;i++){
                  if(checkboxVals.length==i+1){
                        myQuery += "productid=" + checkboxVals[i]+ "";}
                  else{
                        myQuery += "productid = " + checkboxVals[i] + " OR ";%>
                  <%}}%><br><%
                  myQuery += ") AND fuelsource.fuelsourceid = product.fuelsourceid";
                  OraDB mydb = new OraDB();
                  mydb.createConnection();
                  ResultSet rs;
                  rs = mydb.Query(myQuery);
                  %>
                  <table border="0" width="100%">
                  <tr><td><b>Quantity</b></td><td><b>Product Description</b></td><td><b>Product Code</b></td><td><b>Price</b></td></tr>
                  <form name="formEditQty" action="shopcart.jsp">
                  <%
                  LinkedList list = new LinkedList();
                  
                  while(rs.next()){
                  Product myproduct = new Product();
                  myproduct.setProductid(Integer.parseInt(rs.getString("productid")));
                  myproduct.setDescription(rs.getString("productdescription"));
                  myproduct.setFrequency(rs.getString("frequency"));
                  myproduct.setProductcode(rs.getString("productcode"));
                  myproduct.setPrice(Integer.parseInt(rs.getString("productprice")));
                  list.add(myproduct);
                  %>
                  <tr>
                  <td><input type="text" size="2" name="qty" value="1"></td>
                  <td><input type="hidden" name="description" value="<%=rs.getString("productdescription")%>"><%=rs.getString("productdescription")%></td>
                  <td><input type="hidden" name="productcode" value="<%=rs.getString("productcode")%>"><%=rs.getString("productcode")%></td>
                  <td><input type="hidden" name="productprice" value="<%=rs.getString("productprice")%>"><%=rs.getString("productprice")%></td><%
                  //total+= Integer.parseInt(rs.getString("productprice"));
                  index++;
                  %></tr>
                  <%}
                  request.setAttribute("thelist",list);
                  %>
                  <tr>
                  <td>&nbsp;</td>
                  <td><b>Total: <b></td>
                  <td><b><%=list.size()%></b></td>
                  </tr>
                  <tr><td colspan="6"><input type="submit"></td></tr>
                  <tr><td></td></tr>
                  </form>
            </table>
      </body>
</html>



2nd page___________________________________________________________

<%@ page import="shopcart.*"%>
<%@ page import="java.sql.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.lang.*"%>
<%@ include file="includes/header.jsp"%>
<%@ include file="includes/sub.header.2.column.jsp"%>

<TR>
      <TD width="182" valign="top">
            <TABLE width="100%">
                  <TR>
                        <%@ include file="includes/menu.jsp"%>
                  </TR>
                  <TR>
                        <%@ include file="includes/menu.login.jsp"%>
                  </TR>
            </TABLE>
      </TD>
      <TD width="30" rowspan="3"></TD>
      <TD valign="top">

            <TABLE border="1" width="100%">
                  <TR>
                        <TD colspan="7">
                              <FONT color="#3333CC">
                                    <H1>
                                          Edit Quantities
                                    </H1>
                              </FONT>
            
                  <table border="0" width="100%">
                  <tr><td><b>Quantity</b></td><td><b>Description</b></td><td><b>Product Code</b></td><td><b>Price</b></td></tr>
                  <%
                  LinkedList list=(LinkedList)request.getAttribute("thelist");
                   %>
                  <%=list.size()%>
                  
                  <tr>
                  <td>&nbsp;</td>
                  <td><b>Total: <b></td>
                  </tr>
            </table>
      </body>
</html>


______________________________________________________________________________

What am I doing wrong?

I set the list in a page here:______________________________________

LinkedList list = new LinkedList();
                  
                  while(rs.next()){
                  Product myproduct = new Product();
                  myproduct.setProductid(Integer.parseInt(rs.getString("productid")));
                  myproduct.setDescription(rs.getString("productdescription"));
                  myproduct.setFrequency(rs.getString("frequency"));
                  myproduct.setProductcode(rs.getString("productcode"));
                  myproduct.setPrice(Integer.parseInt(rs.getString("productprice")));
                  list.add(myproduct);
                  %>
                  <tr>
                  <td><input type="text" size="2" name="qty" value="1"></td>
                  <td><input type="hidden" name="description" value="<%=rs.getString("productdescription")%>"><%=rs.getString("productdescription")%></td>
                  <td><input type="hidden" name="productcode" value="<%=rs.getString("productcode")%>"><%=rs.getString("productcode")%></td>
                  <td><input type="hidden" name="productprice" value="<%=rs.getString("productprice")%>"><%=rs.getString("productprice")%></td><%
                  //total+= Integer.parseInt(rs.getString("productprice"));
            
                  %></tr>
                  <%}
                  request.setAttribute("productlist",list);


and I try to get the list on another page here:_________________________________

<%
                  LinkedList list=(LinkedList)request.getAttribute("productlist");%>
                  <%=list.size()%>





but list.size() gives me a null pointer exception....................

You are a lifesaver! Thank you!