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jstl不能隐藏标签元素,该怎么处理

发布时间: 2012-02-27 10:00:22 作者: rapoo

jstl,不能隐藏标签元素
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!

[解决办法]
<c:if>呢?用这个
[解决办法]
<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>

[解决办法]
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> 

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