Thanks Liu...looked at Servlet 2.2 spec...you are right
I guess although i replaced default servlet.jar (bundled with JWS 2.0 ) with servlet
2.2
API...
my system is still looking at old version of servlet.jar.....that didn't like
getAttribute() method very well.
I wonder why ....
Liu wrote:
> Are you sure what are you talking about?
>
> On Java Servlet Specification, v2.2, 1.7 Changes Since Version 2.1, page 13, the last
> paragraph:
>
> Added the getAttribute, .....setAttribute.....The getValue, ...setValue...methods are
> deprecated as part of this change.
>
> "Reza U. Nabi" wrote:
>
> > Its all fixed. Problem was ....there was no getAttribute method in Servlet 2.2 API.
> >
> > New version of Servlet (V 2.2) API replaced getAttribute() method with getValue()
> > Also it replaced setAttribute() with putValue() method.
> > Thanks guys,
> >
> > Reza
> >
> > Reza U. Nabi wrote:
> >
> > > Hi J-Gurus,
> > > I was trying Shopping Cart application form PureJsp book.
> > > When i compile ShopController.java, got the following error.
> > > -----------------------------------------------------------------
> > > classes /com/mednetrix/ShopController.java [27:1] No method found
> > > mathcing getAttribute(String)
> > > ShoppingCart cart = (ShoppingCart) session.getAttribute("cart");
> > > classes /com/mednetrix/ShopController.java [27:1] Cannot parse
> > > initializer
> > > ShoppingCart cart = (ShoppingCart) session.getAttribute("cart");
> > > 2 errors
> > > ------------------------------------------------------
> > >
> > > I am using JWS 2.0 with Servlet 2.2 API running on Windows NT Server 4.0.
> > >
> > > Any point would be just great.......
> > >
> > > Thnaks,
> > >
> > > Reza Nabi
> > > [EMAIL PROTECTED]
> > >
> > > ********************************************
> > > BEGIN ShopController.java
> > > ********************************************
> > >
> > > package com.mednetrix;
> > > import javax.servlet.*;
> > > import javax.servlet.http.*;
> > > import java.io.*;
> > > import java.util.*;
> > >
> > > import com.mednetrix.ShoppingCart;
> > >
> > > public class ShopController extends HttpServlet {
> > >
> > > //Initialize global variables
> > > public void init(ServletConfig config)
> > > throws ServletException {
> > >
> > > super.init(config);
> > > }
> > >
> > > //Process the HTTP Post request
> > > public void doPost(HttpServletRequest request,
> > > HttpServletResponse response)
> > > throws ServletException, IOException {
> > >
> > > String command = request.getParameter("command");
> > > HttpSession session = request.getSession();
> > > ShoppingCart cart = (ShoppingCart)session.getAttribute("cart");
> > >
> > > // Determine which command to perform
> > > if ( command.equals("add") ) {
> > >
> > > // Get the item from the request
> > > String id = request.getParameter("id");
> > > if ( id != null ) {
> > >
> > > String desc = request.getParameter("desc");
> > > Float price = new Float(request.getParameter("price"));
> > >
> > > // Add the selected item to the cart
> > > cart.addItem(id, desc, price.floatValue(), 1);
> > > }
> > > }
> > > // Redirect the response
> > > // after adding an item to the cart.
> > > response.sendRedirect("AddToShoppingCart.jsp");
> > > }
> > >
> > > //Get Servlet information
> > > public String getServletInfo() {
> > >
> > > return "ShopController Information";
> > > }
> > > }
> > >
> > > ********************************************
> > > END ShopController.java
> > > ********************************************
> > >
> > > ******************************
> > > ShoppingCart.java
> > > *******************************
> > >
> > > package com.mednetrix;
> > > import java.lang.String;
> > > import java.lang.Integer;
> > > import java.lang.Float;
> > > import java.util.Hashtable;
> > > import java.util.Enumeration;
> > > import java.io.*;
> > >
> > > public class ShoppingCart implements Serializable {
> > >
> > > protected Hashtable items = new Hashtable();
> > >
> > > public ShoppingCart() {
> > >
> > > }
> > >
> > > /**
> > > * Add a new item to the shopping cart.
> > > *
> > > * attributes
> > > * itemId - the unique key associted with the item
> > > * desc - a text description of the item
> > > * price - the unit price for this item
> > > * quantity - number of this item to insert into the
> > > * shopping cart
> > > */
> > > public void addItem(String itemId,
> > > String desc,
> > > float price,
> > > int quantity) {
> > >
> > > String[] item = {itemId, desc, Float.toString(price),
> > > Integer.toString(quantity)};
> > >
> > > if (items.containsKey(itemId)) {
> > >
> > > String[] tmpItem = (String[])items.get(itemId);
> > > int tmpQuant = Integer.parseInt(tmpItem[3]);
> > > quantity += tmpQuant;
> > > tmpItem[3] = Integer.toString(quantity);
> > > }
> > > else {
> > >
> > > items.put(itemId, item);
> > > }
> > > }
> > >
> > > /**
> > > * Remove an item from the shopping cart.
> > > *
> > > * attributes
> > > * itemId - the unique key associated with the item to be
> > > * removed
> > > */
> > > public void removeItem(String itemId) {
> > >
> > > if (items.containsKey(itemId)) {
> > >
> > > items.remove(itemId);
> > > }
> > > }
> > >
> > > /**
> > > * Change the quantity of a specific item in the shopping cart.
> > > * The item must have previously been added to perform this
> > > * function.
> > > *
> > > * attributes
> > > * itemId - unique key for the item to be updated
> > > * quantity - the new quantity to be stored in the shopping
> > > * cart
> > > */
> > > public void updateQuantity(String itemId, int quantity) {
> > >
> > > if (items.contains(itemId)) {
> > >
> > > String[] tmpItem = (String[])items.get(itemId);
> > > tmpItem[3] = Integer.toString(quantity);
> > > }
> > > }
> > >
> > > /**
> > > * Get an Enumeration to the list of items in the shopping cart.
> > > */
> > > public Enumeration getEnumeration() {
> > >
> > > return items.elements();
> > > }
> > >
> > > /**
> > > * Get the total cost of all of the items currently in the
> > > * shopping cart.
> > > */
> > > public float getCost() {
> > >
> > > Enumeration enum = items.elements();
> > > String[] tmpItem;
> > > float totalCost = 0.00f;
> > >
> > > while (enum.hasMoreElements()) {
> > >
> > > tmpItem = (String[])enum.nextElement();
> > > totalCost += (Integer.parseInt(tmpItem[3]) *
> > > Float.parseFloat(tmpItem[2]));
> > > }
> > > return totalCost;
> > > }
> > >
> > > /**
> > > * Get the total number of items currently in the shopping cart.
> > > */
> > > public int getNumOfItems() {
> > >
> > > Enumeration enum = items.elements();
> > > String[] tmpItem;
> > > int numOfItems = 0;
> > >
> > > while (enum.hasMoreElements()) {
> > >
> > > tmpItem = (String[])enum.nextElement();
> > > numOfItems += Integer.parseInt(tmpItem[3]);
> > > }
> > >
> > > return numOfItems;
> > > }
> > > }
> > >
> > > ********************************************
> > > END ShopingCart.java
> > > ********************************************
> > >
> > > ===========================================================================
> > > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST".
> > > Some relevant FAQs on JSP/Servlets can be found at:
> > >
> > > http://java.sun.com/products/jsp/faq.html
> > > http://www.esperanto.org.nz/jsp/jspfaq.html
> > > http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
> > > http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
> >
> > --
> >
> > ===========================================================================
> > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST".
> > Some relevant FAQs on JSP/Servlets can be found at:
> >
> > http://java.sun.com/products/jsp/faq.html
> > http://www.esperanto.org.nz/jsp/jspfaq.html
> > http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
> > http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
>
> --
>
> Best regards,
>
> Yi Liu
> Java Programmer
>
> --
>
> Invisible.Ink Corporation | http://www.inink.com
> 1400 Old Country Road Suite 408
> Westbury, NY 11590
> Phone: (516) 338 - 5283 Ext.148
> Fax: (516) 876 - 8032
>
> ===========================================================================
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> Some relevant FAQs on JSP/Servlets can be found at:
>
> http://java.sun.com/products/jsp/faq.html
> http://www.esperanto.org.nz/jsp/jspfaq.html
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Some relevant FAQs on JSP/Servlets can be found at:
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