freemarker用法二，基于servlet处理

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新建一个web项目，在WebContent下(即WEB-INF的上级目录下)建立一个template文件。新建一个test.rj文件

<html><head><title>测试</title></head><body><span style="color:#FF0000;font-family:微软雅黑;">${user}</span></body></html>

然后新建一个servlet

package com.xuzengqiang.freemarker.action;import java.io.File;import java.io.IOException;import java.io.PrintWriter;import java.util.HashMap;import java.util.Map;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import freemarker.template.Configuration;import freemarker.template.DefaultObjectWrapper;import freemarker.template.Template;@SuppressWarnings("all")public class FreemarkerServlet extends HttpServlet{private static final long serialVersionUID = 1L;@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{this.doPost(request, response);}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{request.setCharacterEncoding("UTF-8");response.setContentType("text/html;charset=UTF-8");Configuration cfg= new Configuration();cfg.setServletContextForTemplateLoading(this.getServletContext(),"template");cfg.setObjectWrapper(new DefaultObjectWrapper());Map root=new HashMap();root.put("user","xuzengqiang");Template temp=cfg.getTemplate("test.rj");PrintWriter out=response.getWriter();try{temp.process(root, out);}catch(Exception e){e.printStackTrace();}out.flush();out.close();}}

新建一个页面index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><title>freemarker测试</title></head><body><a href="${pageContext.request.contextPath}/doFreemarkerServlet">链接</a></body></html>

在web.xml中配置相应的servlet信息。然后点击链接即可跳转到rj文件生成的页面打印xuzengqiang。

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