方式一:
<select id="user_id" name="user_id">
<c:forEach items="${users}" var="u">
<option value="${u.id }" <c:if test="${user.user_id==u.id}"><c:out value="selected"/></c:if>>
${u.name}
</option>
</c:forEach>
</select>
方式二:<select id="projectPorperty" name="projectPorperty">
<option value="1">实施</option>
<option value="0">研发</option>
</select>
<script>
form.projectPorperty.value = '${user.projectPorperty}';
</script>
以上两种方式各有优缺,根据情况酌情选择吧!