HTTP Status 500 - An exception occurred processing JSP page /jstl/forEach.jsp at line 53

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HTTP Status 500 - An exception occurred processing JSP page /jstl/forEach.jsp at line 53

如图所示：

 <h2>解析userMap的数据</h2>
    <c:forEach items="us" var="user">
        ${user.key}
        ${user.value.id}-----${user.value.name}------${user.value.password}<br>
    </c:forEach>

错误是在items中没有加$美刀

 <h2>解析userMap的数据</h2>
    <c:forEach items="${us}" var="user">
        ${user.key}
        ${user.value.id}-----${user.value.name}------${user.value.password}<br>
    </c:forEach>

改之后就OK了