You submit to HelloWorld, which doesn't have the list.
Dave
--- On Thu, 11/27/08, Mark Greene <[EMAIL PROTECTED]> wrote:
> From: Mark Greene <[EMAIL PROTECTED]>
> Subject: <s:select> tag causing could not be resolved as a
> collection/array/map/enumeration/iterator type error
> To: user@struts.apache.org
> Date: Thursday, November 27, 2008, 4:18 PM
> Hi All,
>
> After a couple of days I can't seem to figure this
> validation problem out. I
> have a basic JSP form (create.jsp) with a textfield (with
> validation) and a
> select list (WITHOUT validation). When I submit the form to
> trigger a
> validation failure on purpose, the text field is validated
> correctly and the
> user input is still present, however, the select list
> disappears below it
> and the following error is given:
>
> ERROR [[default]] Servlet.service() for servlet default
> threw exception
> tag 'select', field 'list', name
> 'catID': The requested list key
> 'categories' could not be resolved as a
> collection/array/map/enumeration/it
> erator type. Example: people or people.{name} - [unknown
> location]
>
> I've read about similar problems and they say to
> initialize the collections
> in the prepare(). I did that and I'm still getting the
> problem. Another
> solution I've heard was to put the Collection in the
> session. This doesn't
> seem like a scalable solution for applications that are
> deployed in a
> session replicated enviornement like clustering. Please
> tell me that putting
> the list in the seseion isn't the only work around?
>
> -----------------------------------------------------------------------------------------------------------
> Action Code:
> ------------------------------------------------------------------------------------------------------------
> public class CreateTicket extends ActionSupport implements
> Preparable {
>
> private Map categories;
>
> public Map getCategories() {
> return categories;
> }
>
> public void setCategories(Map categories) {
> this.categories = categories;
> }
>
> public String execute() throws Exception {
> this.prepare();
> return SUCCESS;
> }
>
> public void prepare() throws Exception {
> categories = new HashMap();
> categories.put(1, "test");
> categories.put(2, "test2");
> categories.put(3, "test3");
> }
> }
>
>
> public class HelloWorld extends ActionSupport {
>
> public static final String MESSAGE = "Struts is up
> and running ...";
> private String name;
> private Integer catID;
>
> public Integer getCatID() {
> return catID;
> }
>
> public void setCatID(Integer catID) {
> this.catID = catID;
> }
>
> public String execute() throws Exception {
>
> setMessage(MESSAGE + " " + getName());
>
> return SUCCESS;
>
> }
>
> private String message;
>
> public void setMessage(String message) {
> this.message = message;
> }
>
> public String getMessage() {
> return message;
> }
>
> public String getName() {
> return name;
> }
>
> public void setName(String name) {
> this.name = name;
> }
>
> ----------------------------------------------------------------------------------------------------------
> /tutorial/create.jsp Code:
> ----------------------------------------------------------------------------------------------------------
> <s:form action="HelloWorld">
> <s:textfield name="name" label="Your
> name" size="50"/>
> <s:select name="catID"
> label="Categories"
> list="categories"/>
> <s:submit/>
> </s:form>
>
> ----------------------------------------------------------------------------------------------------------
> struts.xml Code:
> ----------------------------------------------------------------------------------------------------------
> <struts>
> <constant name="struts.action.extension"
> value="" />
> <constant name="struts.devMode"
> value="true" />
>
> <package name="default"
> extends="struts-default">
> <action name="create"
> class="tutorial.CreateTicket">
> <result>/ticket/create.jsp</result>
> </action>
> <action name="HelloWorld"
> class="tutorial.HelloWorld">
> <result
> name="success">/ticket/createconfirm.jsp</result>
> <result
> name="input">/ticket/create.jsp</result>
> </action>
> </package>
> </struts>
>
> ----------------------------------------------------------------------------------------------------------
> HelloWorld-validaiton.xml:
> ----------------------------------------------------------------------------------------------------------
> <validators>
> <validator type="stringlength">
> <param
> name="fieldName">name</param>
> <param
> name="minLength">10</param>
> <param
> name="maxLength">10</param>
> <param
> name="trim">true</param>
> <message>Your name needs to be 10 characters
> long</message>
> </validator>
> </validators>
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