freemarker中的list 前端模板

freemarker list (长度,遍历,下标,嵌套,排序)
1. freemarker获取list的size :

Java
ArrayList<String> list = new ArrayList<String>();

Freemaker
${list?size}


2. list的遍历:

<#list animals as being>
<tr>
<td>${being.name}${being.price}<td>
</tr>
</#list>

3. 遍历MAP

<#list map?keys as k>
<option value="${k}">${map[k]}</option>
</#list>


4.list遍历中的下标序号:

_index是list的一个属性
<#list list as a>
${a_index}
</#list>

5.取LIST中第i个元素的值
${list[i]}
嵌套时前面要有括号,如下,将字符串变成list,然后取第i个元素的值
${(str?split(","))[i]}


6. list的嵌套:
<#list jsskList as jsskVO>
<#list kcList as kcVO>
<#if kcVO.kch=jsskVO.kch> (kcVO里有编号和名称,而jsskVO里只有编号)
${kcVO.kcm}
</#if>
</#list>
</#list>


7. list排序:
升序 .sort_by()
<#list list?sort_by("字段") as x>
</#list>


降序 .sort_by()?reverse
<#list list?sort_by("字段")?reverse as x>
</#list>

8.item_has_next,size使用:

<#list userList as user>

<#if !user_has_next>
共有${userList?size}最后一个用户是:${user.userName}
</#if>
</#list>

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