Freemarker list 的简单使用

时间:2021-07-25 21:33:05

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>