import java.io.File;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.HashMap;
import java.util.Map;

import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateException;
import freemarker.template.TemplateExceptionHandler;

public class HelloFreemarker {

    public static void main(String[] args) throws IOException, TemplateException {
        
        // 第一步 Create a configuration instance
        Configuration cfg = new Configuration(Configuration.VERSION_2_3_29);
        cfg.setDirectoryForTemplateLoading(new File("D://"));
        cfg.setDefaultEncoding("UTF-8");
        cfg.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER);
        cfg.setLogTemplateExceptions(false);
        cfg.setWrapUncheckedExceptions(true);
        cfg.setFallbackOnNullLoopVariable(false);
        
        // 第二步 Create a data-model
        Map<String, Object> root = new HashMap<>();
        root.put("user", "Big Joe");
        
        // 第三步 Get the template
        Template temp = cfg.getTemplate("test.ftlh");
        
        // 第四步 Merging the template with the data-model
        Writer out = new OutputStreamWriter(System.out);
        temp.process(root, out);
    }
}

${somedata}

${some.data}

<#list items as item>
${item}
</#list>

<#if somedata?exists>
</#if>

${somedata?substring(0,somedata?length-4)?cap_first}

<#list items as item>
    <#list item as citem>
        ${citem}
     </#list>
<#/list>

		<#list data.items as item>
			${item.name?split(",")[0]}
			${item.name?split(",")[1]}
			<#if item.type == 'date'>aaaaa</#if>
			<#if item.child?exists>bbbbb</#if>
		</#list>

        Map<String, Object> root = new HashMap<>();
        HashMap<String, String> map = new HashMap<String,String>();
        map.put("name", "小明");
        map.put("age","12");
        root.put("userMap", map);

<#list userMap?keys as key>
${key}:${userMap[key]}
</#list>

<#assign foo = true>
${foo?then('Y', 'N')}