Kevin HaleBoyes wrote:
>
> In order to set my bean properties based on an incoming (POST'ed) HTML form,
> I'm using the following construct in a JSP page:
>
> <jsp:useBean id="ord" class="ord.OrderBean" scope="request">
> <jsp:setProperty name="ord" property="*"/>
> </jsp:useBean>
>
> It works fine except now I want to process something a little different. I'm
> working on an Order entry system and the Order Items are a repeating group of
> fields. In my HTML form I have <input> fields named like "partNumber0,
> quantity0, price0" and "partNumber1, quantity1, price1" that repeat for each
> potential item in an order.
>
> Is there any way to use the <jsp:setProperty> construct to automatically set
> the properties in an OrderItems bean. I'm guessing it might have something to
> do with indexed properties but I really can't see how this would work. If I
> have my bean as
>
> public class OrderItemBean
> {
> String[] partNumber;
> ...
>
> public void setPartNumber( int index, String value ) {...}
> ...
> }
> [...]
No, indexed properties will not work here. They work only for a set of
parameters with the same name, for instance for a group of check boxes or
radio buttons.
In your case, all parameters have unique names ending with a sequence
number, as they should since you're group multiple pieces of info (part
number, quantity and price) that's all related by the sequence number.
I suggest that you use a custom action to handle this. It can read all
request parameters, create a bean for each order, and maybe make it
available to the rest of the application as a Vector of beans. Something
like this:
public class MyTag extends TagSupport {
...
public void doStartTag() {
Vector orders = new Vector();
int seq = 0;
ServletRequest request = pageContext.getRequest();
String partNo = request.getParameter("partNumber" + seq);
while (partNo != null) {
OrderItemBean b = new OrderItemBean(partNo,
request.getParameter("quantity" + seq),
request.getParameter("price" + seq))
orders.addElement(b);
seq++;
String partNo = request.getParameter("partNumber" + seq);
}
pageContext.setAttribute("orders", beans);
}
}
Hans
--
Hans Bergsten [EMAIL PROTECTED]
Gefion Software http://www.gefionsoftware.com
Author of JavaServer Pages (O'Reilly), http://TheJSPBook.com
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