0
我使用的是netbeans 6.9的struts 1.3.8，我想更新我的应用程序中的购物车信息，但是当选中任何复选框它会删除购物车中的第一行，并且我不知道为什么它没有将正确的cartid删除或编辑或检出。捕获复选框的错误ID [struts 1.3.8始终捕获第一个ID]
JSP页面：
<body>
<h1>Customer Cart</h1><h6><p align="left"><a href="logout">logout</a></p></h6>
<!-- include the DB connection -->
<%@ include file="DBconnection.jsp" %>
<% String userID = (String) session.getAttribute("userID");
String categoryID = (String) session.getAttribute("categoryID");
String brandID = (String) session.getAttribute("brandID");
System.out.println(userID);%>
<!-- retrive the brands from DB to populate the select box -->
<% String QueryString = "select cart.cartID, cart.itemID, cart.Qyt, item.itemName, item.itemPrice from cart , item where cart.itemID = item.itemID and customerID=" + userID + ";";
%>
<html:form action="/updateCart">
<table border="0">
<thead>
<tr>
<td colspan="5">
<span style='color:red'>
<i><html:errors property="checkbox" /></i>
<i><html:errors property="cartQyt" /></i>
</span>
</td>
</tr>
<tr>
<th></th>
<th>Item Name</th>
<th>Item Price</th>
<th>Qyantity</th>
</tr>
</thead>
<tbody>
<%
try {
rs = stmt.executeQuery(QueryString);
while (rs.next()) {
int cartID = rs.getInt("cartID");
int cartItemID = rs.getInt("itemID");
String itemName = rs.getString("itemName");
int itemPrice = rs.getInt("itemPrice");
int Qyt = rs.getInt("Qyt");
%>
<tr>
<td><input type="checkbox" name="checkbox" value="<%=cartID%>"/></td>
<td><%=itemName%></td>
<td><%=itemPrice%></td>
<td><input type="text" name="cartQyt" value="<%=Qyt%>" /></td>
<td colspan="4">
<input type="hidden" name="cartItemID" value="<%=cartItemID%>"/>
<input type="hidden" name="cartUserID" value="<%=userID%>"/>
<input type="hidden" name="cartItemPrice" value="<%=itemPrice%>"/>
<html:submit property="cartButton" value="Edit"/>
<html:submit property="cartButton" value="Delete"/>
<html:submit property="cartButton" value="Check out"/>
<%
}
} catch (Exception e) {
System.out.println("retrieve from DB:" + e);
}
%>
</td>
</tr>
<tr>
<td>
</td>
<td>
<a href="userHome.jsp"><input type="button" name="back" value="back to home"/></a>
</td>
</tr>
</tbody>
</table>
</html:form>
</body>
中的formBean：
public class AddToCartForm extends org.apache.struts.action.ActionForm {
private int Qyt;
private int itemID;
private int itemQyt;
private int number;
private int cartUserID;
private int cartItemID;
private int cartItemPrice;
private int cartQyt;
private String cartItemName;
private int cartID;
private String cartButton;
private String checkbox;
public String getCartButton() {
return cartButton;
}
public void setCartButton(String cartButton) {
this.cartButton = cartButton;
}
public String getCheckbox() {
return checkbox;
}
public void setCheckbox(String checkbox) {
this.checkbox = checkbox;
}
public int getCartID() {
return cartID;
}
public void setCartID(int cartID) {
this.cartID = cartID;
}
public int getCartItemID() {
return cartItemID;
}
public void setCartItemID(int cartItemID) {
this.cartItemID = cartItemID;
}
public String getCartItemName() {
return cartItemName;
}
public void setCartItemName(String cartItemName) {
this.cartItemName = cartItemName;
}
public int getCartItemPrice() {
return cartItemPrice;
}
public void setCartItemPrice(int cartItemPrice) {
this.cartItemPrice = cartItemPrice;
}
public int getCartQyt() {
return cartQyt;
}
public void setCartQyt(int cartQyt) {
this.cartQyt = cartQyt;
}
public int getCartUserID() {
return cartUserID;
}
public void setCartUserID(int cartUserID) {
this.cartUserID = cartUserID;
}
public int getItemQyt() {
return itemQyt;
}
public void setItemQyt(int itemQyt) {
this.itemQyt = itemQyt;
}
public int getItemID() {
return itemID;
}
public void setItemID(int itemID) {
this.itemID = itemID;
}
/**
* @return
*/
public int getQyt() {
return Qyt;
}
/**
* @param string
*/
public void setQyt(int Qyt) {
this.Qyt = Qyt;
}
/**
* @return
*/
public int getNumber() {
return number;
}
/**
* @param i
*/
public void setNumber(int number) {
this.number = number;
}
/**
*
*/
public AddToCartForm() {
super();
// TODO Auto-generated constructor stub
}
动作：
public class updateCartAction extends org.apache.struts.action.Action {
/* forward name="success" path="" */
private static final String SUCCESS = "success";
private static final String FAILURE = "failure";
// Initialize SQL connection equal null
private Connection con = null;
private ResultSet rs = null;
private Statement stmt = null;
/**
* This is the action called from the Struts framework.
* @param mapping The ActionMapping used to select this instance.
* @param form The optional ActionForm bean for this request.
* @param request The HTTP Request we are processing.
* @param response The HTTP Response we are processing.
* @throws java.lang.Exception
* @return
*/
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
//Initilized Action error
ActionErrors errors = new ActionErrors();
// set the session on
HttpSession session = request.getSession(true);
//Call AddToCartForm Instance here
AddToCartForm formBean = (AddToCartForm) form;
// define newQuantity and itemID and orderStatus and Qyt and itemPrice and customerID
int newQuantity = 0;
String orderStatus = "Open";
//Initilize Date today = new Date();
java.util.Date now = new java.util.Date();
String DATE_FORMAT = "yyyy-MM-dd";
SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT);
String strDateNew = sdf.format(now);
// extract user data
//Integer cartUserID = formBean.getCartUserID();
Integer checkbox = formBean.getCartID();
Integer cartItemID = formBean.getCartItemID();
Integer cartQyt = formBean.getCartQyt();
String cartButton = formBean.getCartButton();
Integer cartItemPrice = formBean.getCartItemPrice();
Integer userID = Integer.parseInt(session.getAttribute("userID").toString());
// check user data
System.out.println("cart User whose ID is : " + userID + " want to " + cartButton + " the cart its ID is : " + cartItemID + " that contains the item its ID is : " + cartItemID + " with the Qyt :" + cartQyt);
//Set up flag message
boolean flag = false;
// perform validation
if ((checkbox == 0) || // checkbox parameter does not exist
(checkbox < 1)){ // the user did not select any checkbox
errors.add("checkbox", new ActionMessage("errors.checkbox.required"));
}
// perform validation
if ((cartQyt == 0) || // cartQyt parameter does not exist
(cartQyt < 1)){ // cartQyt parameter is empty
errors.add("cartQyt", new ActionMessage("errors.cartQyt.required"));
}
//Save error messages keys into the appropriate HTTP request attribute for use by the <html:errors> tag
saveErrors(request, errors);
//Check- is errors empty
if (errors.isEmpty()) {
flag = true;
} else {
flag = false;
}
if (flag == true) {
// start updateCartAction
System.out.println("////////////////////////// Start updateCartAction /////////////////////////");
// Now Start communicate with database
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/gsm", "root", "root");
if (cartButton.equals("Delete")){ //// if the user select delete button
try{
// delete from cart
PreparedStatement ps = (PreparedStatement) con.prepareStatement("DELETE FROM cart where cartID=?");
ps.setInt(1, checkbox);
//Execute all the above statement
ps.execute();
//Check which cartID was deleted
System.out.println("Deleted from cart table, the cartID: " + checkbox);
} catch (Exception e) {
errors.add("SQLDeletingCart", new ActionMessage("errors.SQLDeletingCart"));
System.out.println("ERROR Deleting : Did not delete cart info from the cart : " + e);
}
//Save error messages keys into the appropriate HTTP request attribute for use by the <html:errors> tag
saveErrors(request, errors);
//Check- is errors empty
if (errors.isEmpty()) {
flag = true;
} else {
flag = false;
}
}else if (cartButton.equals("Edit")){ //// if the user select edit button
try{
// update the cart Qyt
PreparedStatement ps = (PreparedStatement) con.prepareStatement("UPDATE cart SET Qyt=? where cartID=?");
ps.setInt(1, cartQyt);
ps.setInt(2, checkbox);
//Execute all the above statement
ps.execute();
flag = true;
//Check which cartID was deleted
System.out.println("Updated the quantity in the cart: " + cartQyt + " for the cartID: " + checkbox);
} catch (Exception e) {
errors.add("SQLUpdatingCart", new ActionMessage("errors.SQLUpdating"));
System.out.println("ERROR Updating : Did not update the Qyt in the cart : " + e);
}
//Save error messages keys into the appropriate HTTP request attribute for use by the <html:errors> tag
saveErrors(request, errors);
//Check- is errors empty
if (errors.isEmpty()) {
flag = true;
} else {
flag = false;
String UserID = (String)session.getAttribute("userID");
session.setAttribute("userID", UserID);
return mapping.findForward(FAILURE);
}
}else if (cartButton.equals("Check out")){ //// if the user select check out button
try{
try{
// get the cart and item info
PreparedStatement ps1 = (PreparedStatement) con.prepareStatement("select cart.itemID, cart.customerID, cart.Qyt, item.itemQyt, item.itemPrice from cart, item where cart.itemID=item.itemID and cart.cartID=?");
ps1.setInt(1, checkbox);
rs = ps1.executeQuery();
if (rs.next()) // Succes
{
flag = true;
int itemID = rs.getInt("itemID");
int customerID = rs.getInt("customerID");
int Qyt = rs.getInt("Qyt");
int itemQyt = rs.getInt("itemQyt");
int itemPrice = rs.getInt("itemPrice");
//new quantity
newQuantity = itemQyt - Qyt;
///// check the data
System.out.println("The Item ID in the cart is: " + itemID + " and its price is : " + itemPrice + " for the customer whose ID is : " + customerID + " and the quantity selected is : " + Qyt + " from the total Qyt which is: " + itemQyt + " and the new Qyt for the item is : " + newQuantity);
}
flag = false;
} catch (Exception e) {
errors.add("SQLSelectingCartInfo", new ActionMessage("errors.SQLSelectingCartInfo"));
System.out.println("ERROR Selecting : Did not get the cart and item info : " + e);
}
//Save error messages keys into the appropriate HTTP request attribute for use by the <html:errors> tag
saveErrors(request, errors);
//Check- is errors empty
if (errors.isEmpty()) {
flag = true;
} else {
flag = false;
String UserID = (String)session.getAttribute("userID");
session.setAttribute("userID", UserID);
return mapping.findForward(FAILURE);
}
try{
// update the item Qyt in the item table after checking it out
PreparedStatement ps2 = (PreparedStatement) con.prepareStatement("UPDATE item SET itemQyt=? WHERE itemID=?");
ps2.setInt(1, newQuantity);
ps2.setInt(2, cartItemID);
int updateRows = ps2.executeUpdate();
ps2.close();
} catch (Exception e) {
errors.add("SQLUpdatingItem", new ActionMessage("errors.SQLUpdatingItem"));
System.out.println("ERROR Updating : Did not Update the itemQyt in the item table which the itemId is : " + cartItemID + " and the new Qyt is :" + newQuantity + " " + e);
}
//Save error messages keys into the appropriate HTTP request attribute for use by the <html:errors> tag
saveErrors(request, errors);
//Check- is errors empty
if (errors.isEmpty()) {
flag = true;
} else {
flag = false;
String UserID = (String)session.getAttribute("userID");
session.setAttribute("userID", UserID);
return mapping.findForward(FAILURE);
}
try{
// insert the cart info in the order table
PreparedStatement ps3 = (PreparedStatement) con.prepareStatement("INSERT INTO customerOrder(oderStatus, OrderDate, orderQyt, orderTotalPrice, customerID, itemID)"
+ " VALUES (?,?,?,?,?,?) ");
ps3.setString(1, orderStatus);
ps3.setString(2, strDateNew);
ps3.setInt(3, cartQyt);
ps3.setInt(4, cartItemPrice);
ps3.setInt(5, userID);
ps3.setInt(6, cartItemID);
///// check the data
System.out.println("The customer whose ID is: " + userID + " and his ordered item ID : " + cartItemID + " with price = " + cartItemPrice + " and quantity = " + cartQyt + " on that fate : " + strDateNew + " and the order status is : " + orderStatus);
} catch (Exception e) {
errors.add("SQLInsertingOrder", new ActionMessage("errors.SQLInsertingOrder"));
System.out.println("ERROR Inserting : Did not insert the info in the order : " + e);
}
//Save error messages keys into the appropriate HTTP request attribute for use by the <html:errors> tag
saveErrors(request, errors);
//Check- is errors empty
if (errors.isEmpty()) {
flag = true;
} else {
flag = false;
String UserID = (String)session.getAttribute("userID");
session.setAttribute("userID", UserID);
return mapping.findForward(FAILURE);
}
try{
// delete from cart table after check it out
PreparedStatement ps = (PreparedStatement) con.prepareStatement("DELETE FROM cart where cartID=?");
ps.setInt(1, checkbox);
//Execute all the above statement
ps.execute();
} catch (Exception e) {
errors.add("SQLDeletingCart", new ActionMessage("errors.SQLDeletingCart"));
System.out.println("ERROR Deleting from cart : Did not delete the order from the cart : " + e);
}
//Save error messages keys into the appropriate HTTP request attribute for use by the <html:errors> tag
saveErrors(request, errors);
//Check- is errors empty
if (errors.isEmpty()) {
flag = true;
} else {
flag = false;
String UserID = (String)session.getAttribute("userID");
session.setAttribute("userID", UserID);
return mapping.findForward(FAILURE);
}
}catch(Exception e){
System.out.println("ERROR : " + e);
}
//Save error messages keys into the appropriate HTTP request attribute for use by the <html:errors> tag
saveErrors(request, errors);
//Check- is errors empty
if (errors.isEmpty()) {
flag = true;
} else {
flag = false;
String UserID = (String)session.getAttribute("userID");
session.setAttribute("userID", UserID);
return mapping.findForward(FAILURE);
}
}
}catch (Exception ex) {
errors.add("SQLException", new ActionMessage("errors.SQLException"));
throw new SQLException(ex.fillInStackTrace());
}
//Close SQL server connection
try {
if (con != null) {
con.close();
}
} catch (SQLException e) {
throw new SQLException(e.getSQLState() + e.fillInStackTrace());
}
//Save error messages keys into the appropriate HTTP request attribute for use by the <html:errors> tag
saveErrors(request, errors);
//Check- is errors empty
if (errors.isEmpty()) {
flag = true;
} else {
flag = false;
}
if(flag) {
String UserID = (String)session.getAttribute("userID");
session.setAttribute("userID", UserID);
return mapping.findForward(SUCCESS);
}else {
String UserID = (String)session.getAttribute("userID");
session.setAttribute("userID", UserID);
return mapping.findForward(FAILURE);
}
}
return mapping.findForward(FAILURE);
}
}