freemaker中遍历List<Map<String,Map>>

Question

freemaker中遍历List<Map<String,Map>>

[{ java所定义的版本中不包括() =[{1=java2 EE}, {2=java2 ME}, {3=java2 SE}, {4=java2 HE}]}]

Answer 1

ftl文件:

List<Map<String, Map<String, String>>>

<#if (datas)??>

<#-- 遍历list -->

<#list datas as data >

序号:${data_index}

<#if (data)??>

<#-- 遍历第一层MAP -->

<#list data?keys as outkey>

<#assign outMap = data[outkey] />

outkey:${outkey}

<#if outMap??>

<#list outMap?keys as innerkey>

innerkey:${innerkey}--> ${outMap[innerkey]}

</#list>

</#if>

</#list>

</#if>

</#list>

</#if>

java 代码:

public static void main(String[] args) throws Exception {

        File file=new File("/Users/gefangyu/t2/main.ftl");

        String str = "";

        try {

            FileInputStream in=new FileInputStream(file);

            // size  为字串的长度 ，这里一次性读完

            int size=in.available();

            byte[] buffer=new byte[size];

            in.read(buffer);

            in.close();

            str =new String(buffer,"UTF-8");

        } catch (IOException e) {

            e.printStackTrace();

        }

        List<Map<String, Map<String, String>>> list = new ArrayList<Map<String,Map<String,String>>>();

        Map<String, Map<String, String>> map1 = new HashMap<String, Map<String,String>>();

        Map<String, Map<String, String>> map2 = new HashMap<String, Map<String,String>>();

        Map<String, String> innerMap1 = new HashMap<String, String>();

        Map<String, String> innerMap2 = new HashMap<String, String>();

        Map<String, String> innerMap3 = new HashMap<String, String>();

        Map<String, String> innerMap4 = new HashMap<String, String>();

        

        innerMap1.put("key1", "value1");

        innerMap1.put("key2", "value2");

        

        innerMap2.put("key3", "value3");

        innerMap2.put("key4", "value4");

        

        innerMap3.put("key5", "value5");

        innerMap3.put("key6", "value6");

        

        innerMap4.put("key7", "value7");

        innerMap4.put("key8", "value8");

        

        map1.put("innerMap1", innerMap1);

        map1.put("innerMap2", innerMap2);

        map1.put("innerMap3", innerMap3);

        map2.put("innerMap4", innerMap4);

        list.add(map1);

        list.add(map2);

        

        Map<String, Object> param = new HashMap<String, Object>();

param.put("datas", list);

        FreemarkerFactory.getInstance().createFreemarkerProcessor().process(str, param, "/Users/gefangyu/t2/", "temp.shtml");

}

运行结果: