Forum:

Struts

Problem setting form property in action

Ranch Hand

Posts: 43

posted 16 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

I have a problem setting form property in action.

ACTION

FORM

JSP

ERROR
javax.servlet.jsp.JspException: Failed to obtain specified collection
at org.apache.struts.taglib.html.OptionsCollectionTag.doStartTag(OptionsCollectionTag.java:176)

Why my form list property is null ?

[ November 14, 2008: Message edited by: Federico Artebani ]
[ November 14, 2008: Message edited by: Atlantide ]

Tom Rispoli

Ranch Hand

Posts: 349

posted 16 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

I think you need an indexed getter and setter for your list property in addition to the unindex ones you have. That is, make methods with the same names that take in additional parameter, and int. Then use that int to either get the value from the list at the int position or set an individual record at the int position.

Fred Artes

Ranch Hand

Posts: 43

posted 16 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

Mmmm, I don't know.

After this instruction the list is correctly saved into form

After return mapping findforward, in the jsp, ALL properties of action form are null.

David Newton

Author

Posts: 12617

I like...

posted 16 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

You don't provide the action mapping; is it a redirect="true"? Is the form a session or request form?

Sagar Rohankar

Ranch Hand

Posts: 2908

I like...

posted 16 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

Try this, this helps..

Put the "list" in scope , either session or request , like

and use "name" attribute to access this , like

and make sure that , there are getter and setter for "id" & "descriz" in class MyRecord( the bean you are using)..

[LEARNING bLOG] | [Freelance Web Designer] | [and "Rohan" is part of my surname]

Fred Artes

Ranch Hand

Posts: 43

posted 16 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

It is not a redirect = true and I have a session scope (attribute scope not defined in action mapping --> default scope=session)

I will try with session.setAttribute ...

Sagar Rohankar

Ranch Hand

Posts: 2908

I like...

posted 16 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

And change your display name , As per JavaRanch Name Policy ..

[LEARNING bLOG] | [Freelance Web Designer] | [and "Rohan" is part of my surname]

Fred Artes

Ranch Hand

Posts: 43

posted 16 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

With session.setAttribute it works but I don't like it very much.

Why it doesn't work with :

Sagar Rohankar

Ranch Hand

Posts: 2908

I like...

posted 16 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

Post your action mapping for above action from struts-config.xml, and one doubt, you post the code for MyForm form & you are retrieving in action class as

Is MyActionForm is derived from MyForm ??

[LEARNING bLOG] | [Freelance Web Designer] | [and "Rohan" is part of my surname]

Time is mother nature's way of keeping everything from happening at once. And this is a tiny ad:

Gift giving made easy with the permaculture playing cards

https://coderanch.com/t/777758/Gift-giving-easy-permaculture-playing