Problem with Struts html:select

[Ted Herrlich]

I am relatively new to Struts and Spring, but I thought I had this worked out logically, but it's not working.

I have a Select Statement that populates based on a bean -- it works fine. It shows the select box with the values selected based on the value of the bean. Hoever when I attempt to submit the form I am getting a type mismatch in the ActionForm.

<html:select property="problemStatementClassificationReferenceArray" styleId="psclassificationReferenceArray" size="5" multiple="multiple">
		<option value="-1" label="Select one or more . . ." />
		<html-el:options collection="classificationReferences" property="id" labelProperty="title" />
	 </html:select>

problemStatementClassificationReferenceArray is a java Set<ClassificationReference>, obviously ClassificationReference is a java class with several attributes including'id' and 'title'. It populates fine, but when I submit it fails with:
java.lang.IllegalArgumentException: Cannot invoke mil.af.igems.ui.web.finding.FindingForm.setProblemStatementClassificationReferenceArray - argument type mismatch

My question is does the Select statement not return based on the type of the 'property' attribute? Is it returning something else, like a String Array?

TIA,
Ted

[Vicky Vijay]

Ted,

Refer the below link,

http://www.vaannila.com/struts/struts-example/struts-html-select-tag-example-1.html


In Action, you can retrieve the value selected in the drop down,

so the property provided should be string..

for e.g.,

<html:select property="state" >
<html:option value="0">Select State</html:option>
<html:optionsCollection name="InputForm" property="stateList" label="label" value="value" />
</html:select>

Property should be declared as follows,

// holds the state selected by the user.
private String state;
// holds the list of state to be displayed.
private ArrayList stateList;

Hope this give you an idea to work further.. !

[Ted Herrlich]

Thanks for the reply! I seem to be a little confused on something. You can use an object of type 'Collection' in the property attribute of a select statement, which is used to identify the selected items (in this case it is a multiple), but when it comes back from making selection changes, you are returning a String object, so your property attribute needs to reference a String? That seems to defeat the purpose of being able to use a Collection object for the select statement. I feel like I am missing something simple.

I'll read your link and maybe that will help.

Thanks again,
Ted