java web project，how to view all fields / properties of bean in JSP / JSTL
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for example: 在jsp里面的body标签里加下面内容：
<c:set var="object" value="${MAP02}" />
<c:if test="${not empty object['class'].declaredFields}">
<h2>Declared fields <em>${object.name}</em></h2>
<ul>
<c:forEach var="field" items="${object['class'].declaredFields}">
<c:catch><li><span>${field.name}</span>${object[field.name]}</li></c:catch>
</c:forEach>
</ul>
</c:if>