select submit form

<tr>
            <td>Product name</td>
            <td><select name="product.id" id="ss">
                <option value="">请选择</option>
                <c:forEach items="${list}" var="product">
                    alert(${product.id})
                    <option value="${product.id}">${product.proName}</option>
                </c:forEach>
            </select></td>
        </tr>

Note: select submits the value in option by default, so if you don't choose, it will submit "please select", and add value="" to option and this will solve it