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。
- Java code
<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！
------解决方案--------------------
<c:if>呢？用这个
------解决方案--------------------
<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>
------解决方案--------------------
取消EL表达式的嵌入看看.
- HTML code
<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>