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From "Ray Madigan" <...@madigans.org>
Subject RE: Map Backed Form
Date Thu, 18 Sep 2003 23:24:29 GMT
Jason - thanks for your help.  I do appreciate it.

This code worked in 1.1 beta and I haven't had a chance to look at it
since then. I have found that the exception I am getting is caused by
Struts via BeanUtils attempting to access a setter on a bean when the
setter method doesn't exist.

I added to the line:
private Properties elementMap = new Properties();

I rechecked the name of the methods and the name in the jsp.
I remember once I had a space between the ( and the parameter and
the parser couldn't find the parameter.

This page lives in a set of pages that all use the same formBean
it is the only page that uses the map.  Also the html text control
code lives in a tile.  The tile declares itself a form and uses the
correct form.

I'll have to dig in the source I guess.


-----Original Message-----
From: Jason Lea [mailto:jason@kumachan.net.nz]
Sent: Thursday, September 18, 2003 3:29 PM
To: Struts Users Mailing List
Subject: Re: Map Backed Form


Perhaps you need to step through the struts-config to make sure you are
referencing the correct form bean.

Do you access the .jsp page directly or go through an action first?

I would also look at your initialisation of the elementMap.  Perhaps you
should be using

     private Properties elementMap = new Properties();

and in your reset method:

     elementMap.clear()

to make sure it is initialised at first use.  If you accessed the .jsp
directly I don't think the reset method is called, but the bean is created.


Ray Madigan wrote:

> I tried this - same result? hmmmm
>
> -----Original Message-----
> From: Jason Lea [mailto:jason@kumachan.net.nz]
> Sent: Thursday, September 18, 2003 2:18 PM
> To: Struts Users Mailing List
> Subject: Re: Map Backed Form
>
>
> I read this somewhere (perhaps Struts in Action) and I use map-backed
> properties... the methods should have String keys, but Object values eg
>
> public Object getElementMap ( String key ) {
> public void setElementMap ( String key, Object value )
>
>
> Ray Madigan wrote:
>
>
>>I am having some difficulty with my Map Backed Form implementation.
>>
>>I have in my Form:
>>
>>private Properties elementMap = null;
>>
>>public String getElementMap ( String key ) {
>>    return ( String ) elementMap.getProperty ( key );
>>}
>>
>>public void setElementMap ( String key, String value ) {
>>    elementMap.put ( key, value );
>>}
>>
>>public void reset ( ActionMapping mapping, HttpServletRequest request ) {
>>    ...
>>    elementMap = new Properties ( );
>>}
>>
>>I have in my JSP:
>>
>><html-el:text property='elementMap(${element.element})'
>>value='${element.value}'/>
>>
>>If I enumerate the request parameters in the reset method of the form
>>the paramaters and values look like:
>>
>>name->elementMap(PerPage)
>>value->4
>>
>>I get the exception
>>java.lang.IllegalAccessError: try to access class
>>org.apache.commons.beanutils.MappedPropertyDescriptor$1 from class
>>org.apache.commons.beanutils.MappedPropertyDescriptor
>>
>>>>From past experience I get this exception when struts is looking for a
>>setter
>>in my form and can't find it.  I think that struts is looking for a method
>>'setElementMap(perPage)' and has not figured out it is a mapped property
>>for some reason.  And I can't write a method with name.
>>
>>Any help would be appreciated.
>>
>>Thanks
>>
>>
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>
>
>
> --
> Jason Lea
>
>
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>
>
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>
>


--
Jason Lea


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