当没有图片的时候想要显示默认图

<a href="${a.url}" target="_blank"><img src="${a.attr.xinwenliebiaotu.resUrl!site.defImg}" alt=""></a>
前端页面读出来的是这样的：
<img src="<span style='color:red'>[freemarker标签异常，请联系网站管理员]</span>" alt="">

回复第2楼 您好您标签写法有问题

那应该怎么写？
[@cms_content_list count='5' recommend='1' channelId='${tag_bean.id}']
                [#list tag_list as a]
                <div class="swiper-slide">
                  <a href="${a.url}" target="_blank"><img src="${a.attr.xinwenliebiaotu.resUrl!site.defImg}" alt=""></a>
                </div>
                [/#list]
                [/@cms_content_list]

回复第3楼
兄弟，请教一下，那应该怎么写？
[@cms_content_list count='5' recommend='1' channelId='${tag_bean.id}']
                [#list tag_list as a]
                <div class="swiper-slide">
                  <a href="${a.url}" target="_blank"><img src="${a.attr.xinwenliebiaotu.resUrl!site.defImg}" alt=""></a>
                </div>
                [/#list]
                [/@cms_content_list]

回复第4楼 需要写if判断 [#if (channel.attr.channelImg.resUrl)??]
            <img src="${(channel.attr.channelImg.resUrl)!}" alt="">
            [#else]
            <img src="${res}/暂无图片.jpg" alt="">
            [/#if]
            <h2>${channel.name!}</h2>
        </div>