freemarker 从List集合取一个Map集

从List集合取一个Map集

例如：

    List list = new ArrayList();

    Map map1 = new HashMap();
    map1.put("phone", "13655555555");
    map1.put("email", "admin@vip.com");
    list.add(map1);
    
    Map map2 = new HashMap();
    
    map2.put("phone", "13888888888");
    map2.put("email", "china@vip.com");
    map2.put("address", "beijing");
    list.add(map2);

test.ftl文件：

<#list list as map>
    <#list map?keys as itemKey>
         <#if itemKey="phone">
            Phone:${map[itemKey]}
         </#if>
         <#if itemKey="email">
            Email:${map[itemKey]}
         </#if>
    </#list>
</#list>

复杂的list集合里面map,map里面套有list2集合，list2里面还有map

    List<Map<String,Object>> typeList=new ArrayList<Map<String,Object>>();
    for(MerchantSettledTypeInfo merchantSettledType:merchantSettledTypeSet){

        Map<String,Object> typeMap=new HashMap<String,Object>();
        ProductTypeInfo type=merchantSettledType.getProductType();
        typeMap.put("id", type.getId());
        typeMap.put("name", type.getName());
        //商品分类list，里面若干个分类map
        List<Map<String,String>> categoryList=new ArrayList<Map<String,String>>();
        List<ProductCategoryInfo> categoryList =merchantSettledType.getProductCategoryListId());
        for( ProductCategoryInfo cate: categoryList){
            Map<String,String> categoryMap=new HashMap<String,String>();
            categoryMap.put("id", cate.getId().toString());
            categoryMap.put("name", cate.getName());
            categoryList.add(categoryMap);
        }
        typeMap.put("categoryList", categoryList);
        typeList.add(typeMap);

前台ftl 页面代码：

<#list productTypeCateList as middleMap>
    <#list middleMap?keys as itemKey>
        <tr>
            <#if itemKey=="name">
                <td>${(middleMap[itemKey])!}</td>
            </#if>
            <#if itemKey=="categoryList">
                <#list middleMap[itemKey] as cateMap>
                    <#list cateMap?keys as cateKey>
                        <#if itemKey=="name">
                            <td>${(cateMap[cateKey])!}</td>
                        </#if>
                    </#list>
                </#list>
            </#if>
        </tr>
    </#list>
</#list>

demo3

原文链接

image

<#list keyan as middleMap>
    <#list middleMap?keys as itemKey>
        <#assign keys=middleMap?keys/>
        <#list keys as key>
            key:${key}
            <#if itemKey=="${key}">
                <#list middleMap[itemKey] as cateMap>
                    数字：${cateMap.rid!}
                </#list>
            </#if>
        </#list>
    </#list>
</#list>