使用c:foreach(JSP/JSTL)遍历ArrayList，变量不起作用

我知道有很多例子可以解决我的问题，但是我经历了很多例子，无法弄清楚我的错误在哪里.

There are countless examples out there for my problem, I know, but I went through a lot of them and can't figure out where my mistake is.

我正在遍历ArrayList(TestSzenario). TestSzenario类包含一个名为name的字符串变量，带有正确的获取器和设置器.

I am iterating over an ArrayList(TestSzenario). The class TestSzenario contains a String Variable called name with proper getters and setters.

这是我的代码:

<td><select name="selectSzenario" id="selectSzenario" size="1">
                <c:forEach items="<%=testszenario.getSzenariosForSummary() %>" var="szenario"> 
                    <option>${szenario.name}</option>
                </c:forEach></select></td></tr>

我的问题是，变量不起作用.对于选择框中的每个选项，我都会得到$ {szenario.name}.我正确地声明了JSTL-taglib，因为完成后站点中有多个选项，所以我知道迭代是有效的.我也查看了HTML源代码中的foreach问题.

My Problem is, the Variable isn't working. I alwas get ${szenario.name} for every option in the select-box. I declared the JSTL-taglib properly and since there are multiple options in the site when done i know the iteration is working. Also I looked in the HTML-sourcecode an the foreach is resolved.

HTML输出:

        <tr><td>Szenario:</td>
        <td><select name="selectSzenario" id="selectSzenario" size="1">

                    <option>${szenario.name}</option>

                    <option>${szenario.name}</option>
                </select></td></tr>

编辑答案1: 谢谢，但是我之前尝试过:

EDIT for answer 1: Thank you, but I tried that before:

ArrayList<TestSzenario> szenarioList = testszenario.getSzenariosForSummary();
request.setAttribute("aList", szenarioList);
request.setAttribute("ts", testszenario);

<c:forEach items="${aList}" var="szenario">
<option>${szenario.name}</option>
</c:forEach></select></td></tr>

<c:forEach items="${ts.szenariosForSummary}" var="szenario">
<option>${szenario.name}</option>
</c:forEach></select></td></tr>

但是在任何一种情况下，它甚至都不会遍历List，从而仅产生1个选项(List包含2个元素).

But in either case it doesn't even iterate through the List, resulting in only 1 option (the List contains 2 elements).