freemarker的一个例子

首先要freemarker.jar包,这里我结合了Struts1.x
1,写了freemarker 编译的类.例下:
package com.lch.util;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Locale;
import java.util.Map;
import javax.servlet.ServletContext;
import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateException;
public class FreeMarkerFactory {
private static FreeMarkerFactory fmf=new FreeMarkerFactory();

private FreeMarkerFactory(){}

public static FreeMarkerFactory getIntersten(){
   return fmf;
}
public void init(String ftl,String htmlName,Map map,String fileName,ServletContext sc)
throws IOException, TemplateException{
   Configuration cf=new Configuration();
   cf.setServletContextForTemplateLoading(sc, "/"+fileName);
   cf.setEncoding(Locale.getDefault(), "utf-8");
   Template template;

   template = cf.getTemplate(ftl);
   template.setEncoding("utf-8");
   String path=sc.getRealPath("/");
   System.out.println(path);//也就是静态页面的地址D:\apache-tomcat-6.0.16\webapps\test\
   BufferedWriter buff= new BufferedWriter(new FileWriter(path+htmlName));
   File htmlFile = new File(path+htmlName);

   Writer out = new BufferedWriter(new OutputStreamWriter(
     new FileOutputStream(htmlFile), "utf-8"));
   template.process(map,out);
   buff.close();
   out.flush();
   out.close();
}
2,在Action中代码:
Map map=new HashMap();
    User u=new User();
    u.setId(2);
    u.setUsername("jack");
    u.setPassword("123123");
    map.put("user", u);
    map.put("message", "我的第一个Freemarker应用序程");
   try {
   FreeMarkerFactory.getIntersten().init("main.ftl", "main.html", map, "free/", getServlet().getServletContext());
return mapping.findForward("ok");
}
3,main.ftl
<html>
<body>
ID:${user.id}
用户名:${user.username}<br>
密码:${user.password}<br>
message=${message}
<a href="ListAction.do">点这里进入另一页面</a>
</body>
</html>
下面是Struts里面的配置:
<action
      attribute="loginForm"
      input="/login.jsp"
      name="loginForm"
      path="/login"
      scope="request"
      type="com.lch.struts.action.LoginAction">
      <forward name="lose" path="/login.jsp" />
      <forward name="ok" path="/main.html" redirect="true"/>
    </action>

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