Illegal use of <when>-style tag without <choose> as its direct parent

报错信息：

javax.servlet.jsp.JspTagException: Illegal use of <when>-style tag without <choose> as its direct parent

<c:choose>
<c:when test=”${people.age<18 }”>
<h2>小于18</h2>
</c:when>
<c:when test=”${people.age=18 }”>
<h2>等于18</h2>
</c:when>
<c:otherwise>
<h2>大于18</h2>
</c:otherwise>
</c:choose>


少了<c:chosse>标签