如何在jsp中动态插入alt标签 [英] How to insert alt tags dynamically in jsp

问题描述

我想在以下jsp代码行中插入alt标记，我该如何实现?

I want to insert an alt tag in the following lines of jsp code how do I accomplish this?

<li class="carousel-promo">
  <div>
<c:choose>
<c:when test="${mediaType eq 3}">
    <dsp:valueof param="media.data" valueishtml="true"/>
</c:when>
<c:when test="${mediaType eq 1}">
    <dsp:getvalueof var="imgURL" param="media.url" />
    <img src='<dsp:valueof value="${imgURL}"/>' /> <br />
</c:when>   
</c:choose>
  </div>
</li>

推荐答案

im假设您是要向img-tag添加alt属性:

im assuming you meant adding an alt attribute to the img-tag:

在尝试设置alt属性时只需执行以下操作即可.此示例使用media.description作为媒体对象上属性的名称来设置通过dsp标签获取的变量的值.

just do something like this when trying to set the alt attribute. this example sets the value of the variable fetched via the dsp-tag using media.description as a name of the property on your media object.

<c:when test="${mediaType eq 1}">
    <dsp:getvalueof var="imgAltText" param="media.description" />
    <dsp:getvalueof var="imgURL" param="media.url" />
    <img alt='<dsp:valueof value="${imgAltText}"/>' src='<dsp:valueof value="${imgURL}"/>' /> <br />
</c:when>  

希望有帮助....

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