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Accesssing model attribute in JPA doesn't work

I am having problems accessing a model attribute in my controller, using Spring.
When adding to the model, I write the status code as a key and the enumeration name as a value. The status code is e.g. AVAILABLE, NOTAVAILABLE, etc.:
String code = status.getCode();
String enumerationName = enumerationService.getEnumerationName(status, currentLocale);
model.addAttribute(code, enumerationName);
On my JPA page, I am trying to access the corresponding value using the key (status code, e.g. AVAILABLE):
<div data-availability>
<c:forEach items="${StockLevelDeliveryStatus.values()}" var="status">
<c:set var="textStyle" value="text-success" />
<c:if test="${status.code.toLowerCase() == 'notavailable'}">
<c:set var="textStyle" value="" />
</c:if>
<div class="d-none display-22 pb-2 ${textStyle}" data-availability-item data-${status.code.toLowerCase()}>
${status}
</div>
</c:forEach>
</div>
For example, the value of status is AVAILABLE and this is what is output in ${status}. However, I want the value AVAILABLE to be used as a key to return me the correct value that I set in the model above. If I change the ${status} statement to, say, ${AVAILABLE} instead, which is the concrete key, the appropriate value from the model is returned:
<div class="d-none display-22 pb-2 ${textStyle}" data-availability-item data-${status.code.toLowerCase()}>
${AVAILABLE}
</div>
If I understand it correctly, then instead of passing the enum value as a key, I need to somehow teach Spring to search in the model for the appropriate key.
As recommended in one of the replies, I also tried writing the Map<StockLevelDeliveryStatus, String> directly into the model:
Map<StockLevelDeliveryStatus, String> statusMap = new HashMap<StockLevelDeliveryStatus, String>();
for (StockLevelDeliveryStatus status : StockLevelDeliveryStatus.values()) {
statusMap.put(status, enumerationService.getEnumerationName(status, currentLocale));
}
model.addAttribute("statusMap", statusMap);
And the JSP accordingly:
<div data-availability>
<c:forEach items="${StockLevelDeliveryStatus.values()}" var="status">
<c:set var="textStyle" value="text-success" />
<c:if test="${status.code.toLowerCase() == 'notavailable'}">
<c:set var="textStyle" value="" />
</c:if>
<div class="d-none display-22 pb-2 ${textStyle}" data-availability-item data-${status.code.toLowerCase()}>
${statusMap[status]}
</div>
</c:forEach>
</div>
Here it already fails when accessing the model, because with this approach I do not get any output on the JSP.
Does anyone have any ideas on how to make this work?

Why not simply put a Map<StockLevelDeliveryStatus, String> into the model? You could then simply use ${statusMap[status]}.

Manipulating Hashtable key is not working

I am trying to access a Hashtables value based on its key, which is a number as String in JSTL.
But if I increment/decrement the keys value, it does not work anymore.
I iterate the sorted list of keys in a for loop. I use this item to access Hashtable.
<c:forEach items="${helper:getSortedList(hashtableObj)}" var="lineNumber" varStatus="loop">
<c:if test="${param.lineNbr eq lineNumber}">
<c:if test="${lineNumber>1}">
<fmt:parseNumber var="prevLineNumberKey" type="number" value="${lineNumber-1}" />
<c:out value="PREV ${hashtableObj[prevLineNumberKey]}" escapeXml="false"/><br/>
</c:if>
<c:out value="Current :${lineNumber}" /><br/>
<c:if test="${lineNumber<fn:length(hashtableObj)-1}">
<fmt:parseNumber var="nextLineNumberKey" type="number" value="${lineNumber+1}" />
<c:out value="NEXT ${hashtableObj[nextLineNumberKey+1]}" escapeXml="false"/><br/>
</c:if>
</c:if>
</c:forEach>
The output is
PREV Current :51 NEXT
But what I expected is
PREV 50 Current :51 NEXT 52
Any pointers are appreciated.

If keys in your Map is String than to get an element you must query it with String value. Your current solution queries a Map with Long value.
You can convert number to String and then query a Map like this:
<c:set var="numberAsString">${50 - 1}</c:set>
<c:out value="value: ${hashtableObj[numberAsString]}"/>

Try replacing:
<fmt:parseNumber var="prevLineNumberKey" type="number" value="${lineNumber-1}" />
With:
<c:set var="prevLineNumberKey">${lineNumber-1}</c:set>
And replace:
<fmt:parseNumber var="nextLineNumberKey" type="number" value="${lineNumber+1}" />
<c:out value="NEXT ${hashtableObj[nextLineNumberKey+1]}" escapeXml="false"/><br/>
With:
<c:set var="nextLineNumberKey">${lineNumber+1}</c:set>
<c:out value="NEXT ${hashtableObj[nextLineNumberKey]}" escapeXml="false"/><br/>
Couple of questions though:
1) Is hashtableObj really a hashtable or is it a hashmap?
2) Is the value of the hashtableObj, really a number that is equal to the key? In other words you are expecting:
PREV 50
... that means you are expecting the value of the hashtable/map to be 50 AND the key is also 50?

I found a workaround.
<fmt:parseNumber var="prevLineNumberKey" type="number" value="${lineNumber-1}" />
<c:out value="Previous ${hashtableObj[sortedList[prevLineNumberKey-1]]}" escapeXml="false"/><br/>
I used the list element as a key for Hashtable and it works. Thanks to all answers.

Set value of bean attribute on Drop Down selection: Spring

I am using JSTL to populate drop down items, where country is an item having { id, name, code } attributes.
My need is to get name and code for selected country.
for example:
Country{c_id, c_name, c_code} is structure of country bean. when user selects this item I need to retrieve two values c_name, c_code.
What I did yet:
As I know, only one value can be assigned to itemValue either c_name or c_code.
I tried to populate all country and match selected country and then set to another path variable, but this also not working.
My code is as
<form:select path="selectedCountry" id="ddlCountryId">
<c:forEach items="${countries}" var="country">
<option value="${country.countryName}" ${country.countryName == selectedCountry ? 'selected' : ''}>${country.countryName}</option>
</c:forEach>
</form:select>
<input class="login_submit" type="submit" value="Login" id="btnSubmitId">
<!-- Read country code of selected country -->
<c:forEach var="country" items="${countries}">
<c:out value="country"></c:out>
<c:choose>
<c:when test="${country.countryName==loginCreadetials.selectedCountry}">
<input name="countryCode" type="hidden" value="${country.countryCode}"/>
</c:when>
</c:choose>
</c:forEach>
How can I do this?

Set the value of your option tag to a String that you can easily parse, for instance
value="${country.countryName}:${country.countryName}"
In your controller, you can then split the string on the ':' character to retrieve your two values.

How to use the index variable of a JSTL forEach loop to access a map entry?

With a forEach loop I'd like to create table cells (for a row) whereas each cell contains an input field of a form. The number of table cells is always fixed (12). That is actually no problem. However, here comes the challenge: the forEach should also enter a variable number of default values into the input fields that have to be obtained from a Map(Long, Double).
This is my (simplified) attempt:
<c:forEach var="number" begin="1" end="12" >
<td>
<input type="text" value="${requestScope.aMapWithData[number]}" />
</td>
</c:forEach>
But this doesn't show any value from the Map in the input fields. I guess the problem is that "number" is of type String and not Long. So I wonder if this problem can be solved without using scriptlets.

What number do you want to show? Is it index number of each map entry?
<c:forEach items="${aMapWithData}" var="item" varStatus="status">
<td>
<c:out value="${status.count}."/>
<input type="text" name="${item.key}" value="${item.value}" />
</td>
</c:forEach>

Try this
<c:forEach items="${aMapWithData}" var="mapEntry">
<c:set var="mapKey" value="${mapEntry.key}"></c:set>
<c:set var="mapValue" value="${mapEntry.value}"></c:set>
</c:forEach>

How to write <c:if> - jstl tag - comparing map key with struts formbean element

I need to retrieve list values from a map of type Map<String,List<HashMap<String, Object>>> in JSP based on a condition. The condition is to compare map key with formbean variable. Rightnow, I am doing multi level iterations. Firstly, I am iterating the map to retrieve key and an inner iterate loop to retrieve list values.
So far, I have like this
<c:forEach items="${addRatingExceptionForm.ratingsMap}" var="entry">
<c:set var="key" value="${entry.key}"/>
<jsp:useBean id="key" type="java.lang.String" />
<c:if test= '<%= key.equalsIgnoreCase(addRatingExceptionForm.getRatingElementDropdown()) %> ' >
<c:forEach items="${entry.value}" var="item">
<li>
<input type="checkbox" id="addRatingException_timeline_earlyAsn" value="${item.RatingInstanceValue}" class="ajaxContentTrigger method_Load_exceptionType ajaxLoadingTrigger|addRatingException_exceptionType clearErrors"/>
<label for="addRatingException_timeline_earlyAsn">${item.RatingInstanceValue}</p></label>
</li>
</c:forEach>
</c:if>
</c:forEach>
But it errors on the <c:if> tag.

You don't need to iterate over the map to compare keys. You just have to use the brace notation [] to get a map value by a dynamic key like so ${map[key]}.
So, this should do:
<c:forEach items="${addRatingExceptionForm.ratingsMap[addRatingExceptionForm.ratingElementDropdown]}" var="item">
<li>
<input type="checkbox" id="addRatingException_timeline_earlyAsn" value="${item.RatingInstanceValue}" class="ajaxContentTrigger method_Load_exceptionType ajaxLoadingTrigger|addRatingException_exceptionType clearErrors" />
<label for="addRatingException_timeline_earlyAsn">${item.RatingInstanceValue}</p></label> <!-- wtf is that </p> doing there? -->
</li>
</c:forEach>