freemarker遍歷tr td

表單遍歷，每三個屬性爲一行

<table cellpadding="0" cellspacing="0"  align="center" class="tab">
    <tr>
        <th colspan="6" align="center">表單明細</th>
    </tr>
    <#if model??>
    <#list model.properties as ps>

        <#if (ps_index+1) % 3 ==1><tr></#if>
            <td class="tit_1">${ps.displayName}${(ps_index+1) % 3}</td>
            <td class="tit_2">${ps.value}</td>
        <#if (ps_index+1) % 3 == 0> </tr></#if>

    </#list>
    </#if>

</table>

結果示意圖：