Display html select on jsp page with "???"

Question

I encounter a strange issue, when I trying to display html select on jsp page, the value wrapped with "???"

???Male???
???Female???

here is code on jsp page

<form:select path="gender" class="form-control" id="gender">
   <c:forEach var="gd" items="${genders}">
      <c:choose>
         <c:when test="${studentEdit.gender==gd.key}">
            <form:option selected="true" value="${gd.key}">
               <fmt:message key="${gd.value}" />
            </form:option>
         </c:when>
         <c:otherwise>
            <form:option value="${gd.key}">
               <fmt:message key="${gd.value}" />
            </form:option>
         </c:otherwise>
      </c:choose>
   </c:forEach>
</form:select>

controller code

Map<String, String> genders = new LinkedHashMap<String, String>();
genders.put("M", "Male");
genders.put("F", "Female");
model.addObject("genders", genders);

Seems like some encoding/decoding issue ?

EDIT

Thanks to @JB Nizet

I changed the jsp/jstl code to

<c:url value="/Student/Edit" var="editstudenturl"/>
<form:form method="post" action="${editstudenturl}" modelAttribute="studentEdit" class="form-horizontal">
  <form:select path="gender" class="form-control" id="gender" >
    <form:options items="${genders}" />
  </form:select>
</form:form>

JB Nizet · Accepted Answer · 2015-04-18 13:30:22Z

2

That simply means that your resource bundle (the properties file where you store all the translations) doesn't have an entry for the keys Male and Female.

If you don't want to translate Male and Female, then you shouldn't be using <fmt:message key="${gd.value}" />, since that's its sole purpose. Simply use ${gd.value}.

Note that I also have a hard time understanding why you're using c:choose, given that the code in the two cases is identical.

answered Apr 18, 2015 at 13:30

JB Nizet

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8 Comments

Timeless Over a year ago

c:choose from stackoverflow.com/questions/5935892/if-else-within-jsp-or-jstl, what you recommend to use? c:if ?

JB Nizet Over a year ago

I would recommend not using anything. What's the point in doing if (someCondition) { doThis(); } else { doThis(); }? Why not simply do doThis();?

Timeless Over a year ago

you mean if(M/F) selected=selected ? sorry, can elaborate?

JB Nizet Over a year ago

Now it makes more sense. Except that the form:option tag should do that for you. It's responsibility is to generated selected="selected"if the value of the option is equal to the gender value bound to the form:select.

JB Nizet Over a year ago

Yes. The form is bound to the studentEdit model attribute, and the select is bound to the path gender in this object.

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