Map變爲字符串的FreeMarker模板實現

package com.examstack.management.security;

import java.io.IOException;
import java.io.StringWriter;

import java.util.HashMap;
import java.util.Map;
import freemarker.cache.StringTemplateLoader;
import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateException;
/**
 * Created by hyd on 2016/6/22.
 */
public class StringTemplate {
    private  String key = null;
    Configuration cfg = new Configuration();
    StringTemplateLoader stringLoader = new StringTemplateLoader();

    public void  freeMarkerReturn(Map<String,Object> map){
        for(Map.Entry<String, Object> entry: map.entrySet()) {
            key = entry.getKey();
            System.out.print(key+"+++");
        }
        String templateContent="值爲：${"+key+"}";
        stringLoader.putTemplate("myTemplate",templateContent);
        cfg.setTemplateLoader(stringLoader);
        try {
            Template template = cfg.getTemplate("myTemplate","utf-8");
            StringWriter writer = new StringWriter();
            try {
                template.process(map, writer);
                System.out.println(writer.toString()+"======");
            } catch (TemplateException e) {
                e.printStackTrace();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args){
       StringTemplate template = new StringTemplate();
        Map<String,Object> map1 = new HashMap<>();
        map1.put("hello","world");
        template.freeMarkerReturn(map1);
    }
}