EL里如何处理变量

Question

<c:set var="educationLevelID" value="${educationLevel.id}"/><c:forEach items="${educationLevelID}" var="enrollExamCourse">
      <option value="${enrollExamCourse.id}">${enrollExamCourse.courseName}</option>
</c:forEach> 这样写只能获取educationLevelID的值，无法获得List。如果我把educationLevelID换成它的值就没问题了，就可以获取List了。这个问题也可以归结为这样：EL里没有这样的语法 ${${educationLevel.id}}，那么这样的问题该怎么处理呢？

Answer 1

完整代码是这样的：<c:forEach items="${educationLevelList}" var="educationLevel">   
            <tr>   
                <td>  
                ${educationLevel.educationLevelName} 
                </td>
                <td>  
                <input type="text" name="totalScore">
                </td>      
                <td>
                <c:set var="educationLevelID" value="${educationLevel.id}"/>
                 <select name="singleScore">
                   <option selected="selected" value="">请选择</option>
                   <c:forEach items="${educationLevelID}" var="enrollExamCourse">
       <option value="${enrollExamCourse.id}">${enrollExamCourse.courseName}</option>
       </c:forEach> 
                 </select>
                </td>
                <td>  
                <input type="text" name="singleScore">
                </td> 
            </tr>   
        </c:forEach>   

Answer 2

楼主你可以在后台事先将educationLevel.id值,然后根据这个值得到的list放到educationLevel的一个属性中去例如放到idlist这个属性中，然后前台就可以用
 <c:forEach items="${educationLevel.idlist}" var="enrollExamCourse">
                              <option value="${enrollExamCourse.id}">${enrollExamCourse.courseName}</option>
                          </c:forEach> 
也就是在后台做下处理前台不要过多的业务逻辑处理,

Answer 3

也就是在后台将的需要通过educationLevel.id的值得到list的事交给后台处理好了返回给前台