freemarker 替换字符串，模板，可以用来动态生成代码

freemarker 通过字符串模板生成，会把map中 name 对应的变量替换字符串模板中的${name}

package com.thinkgem.jeesite.test.test;

import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;

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

public class aaa {

	public static void main(String[] args) throws TemplateException, IOException {
		Map<String, String> map=new HashMap<String, String>();
		map.put("username", "lisi");
		String templateString="${username}/zhangsan";
		StringWriter result = new StringWriter();
		Template t = new Template("name1", new StringReader(templateString), new Configuration());
		t.process(map, result);
		System.out.println(result.toString());
	}
	
}