对于编辑时上拉框的显示

<select name="darithy.employee.employeeId" value="${darithy.employee.employeeName }">
<c:forEach items="${emplist}" var="employee">
<c:if test="${employee==darithy.employee}">
	<option value="${employee.employeeId}" selected="selected">${employee.employeeName }</option>
</c:if>
<c:if test="${employee!=darithy.employee}">
<option value="${employee.employeeId }">${employee.employeeName }</option>
</c:if>
</c:forEach>
</select>

?若用s标签则很简单：

<s:select list="emplist" listKey="employeeId" listValue="employeeName" name="darithy.employee.employeeId"></s:select>

?

注：employee与darithy是一对多的关系