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