freemarker实现第一个HelloWorld

第一步：引入freemarker jar包

第二步：创建templates下的test01.ftl

第三步：在web.xml下

第四步：编写后台代码

package com.wisezone.test;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/hello")
public class HelloFreemarker extends HttpServlet
{

    /**
     * 
     */
    private static final long serialVersionUID = 5308886783662025829L;
    
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException
    {
        doPost(req, resp);
    }
    
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException
    {
        //添加数据模型
        req.setAttribute("message", "【hello world!】");
        
        req.setAttribute("message2", "第一个用freemarker打印出来的【helloworld!】");
        //转发到视图
        req.getRequestDispatcher("templates/test01.ftl").forward(req, resp);
    }

}

最后，发布到Tomcat服务器上　　　　http://localhost:8080/freemarker/hello