jstl，不能隐藏标签元素

Question

想实现这样的功能：
当用户头像为空的时候，不显示加关注，当用户头像不为空并且为关注的时候，显示添加关注！目前是这种情况，当用户头像为空的时候，会显示添加关注。
                  <div class="userPhoto">
                     <a href="#" namecard="true" uid="${user.uid}">
                         <c:choose>
                              <c:when test="${empty user.mugshot256}">
 <img alt="" src="${RESOUCE_STATIC_URL}/images/avatar_64_64.png">
  </c:when>
  <c:otherwise>
<img alt="" src="${RESOUCE_UPLOAD_URL}/${user.mugshot256}">
<c:choose>
<c:when test="${user.beenFollowed}">
<c:set var = "styleFollow"  value="display:none" />
</c:when>
<c:otherwise>
<c:set var = "styleFollow" value="" />
</c:otherwise>
</c:choose>
   <a class="follow-action blue-button-addnew" title="加关注" style="${styleFollow}" uid="${user.uid}" ><span class="addnew">+</span></a>
  </c:otherwise>
 </c:choose>
                     </a>
                  </div>本人对jstl不是很熟悉，望大家指点！

Answer 1

 <c:when test="${empty eq user.mugshot256}">
    <img alt="" src="${RESOUCE_STATIC_URL}/images/avatar_64_64.png">
  </c:when>
或者
 <c:when test="${user.mugshot256 eq ""}">
    <img alt="" src="${RESOUCE_STATIC_URL}/images/avatar_64_64.png">
  </c:when>

Answer 2

取消EL表达式的嵌入看看. <div class="userPhoto">
                     <a href="#" namecard="true" uid="${user.uid}">
                         <c:choose>
                                  <c:when test="${empty user.mugshot256}">
                                         <img alt="" src="${RESOUCE_STATIC_URL}/images/avatar_64_64.png">
                                  </c:when>
                                  <c:otherwise>
                                        <img alt="" src="${RESOUCE_UPLOAD_URL}/${user.mugshot256}">                                    
                                            <c:if test="!${user.beenFollowed}">    
                                               <a class="follow-action blue-button-addnew" title="加关注" style="${styleFollow}" uid="${user.uid}" ><span class="addnew">+</span></a>
                                            </c:if>                                            
                                  </c:otherwise>
                         </c:choose>
                     </a>
                  </div>