<s:if test="userName!=null">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">${user.userName }<strong class="caret"></strong></a>
</s:if>
<s:else>
<a href="<%=path %>/jsp/user/login.jsp">
<img src="<%=path %>/image/user_24px_1174223_easyicon.net.png" alt="登录/注册">
</a>
</s:else>
贴出你的代码
目测是左边margin增加一点,字体加粗
<img src="<%=path %>/image/user_24px_1174223_easyicon.net.png" alt="登录/注册">登录/注册
<s:if test="userName!=null">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">${user.userName }<strong class="caret"></strong></a>
</s:if>
<s:else>
<a href="<%=path %>/jsp/user/login.jsp">
<img src="<%=path %>/image/user_24px_1174223_easyicon.net.png" alt="登录/注册">
</a>
</s:else>