Java使用servlet+freemarker渲染html视图

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创建web project

编写配置类

package com.mazun.weixin.freemarker;import java.io.PrintWriter;import java.util.HashMap;import java.util.Map;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import freemarker.template.Configuration;import freemarker.template.Template;public class FreemarkerViewRender {public static void respondView(HttpServletRequest request, HttpServletResponse response) throws Exception {// 1创建Freemarker配置实例并设置模版文件位置Configuration cfg = new Configuration();// cfg.setDirectoryForTemplateLoading(new File("src/main/webapp/tpl"));cfg.setServletContextForTemplateLoading(request.getServletContext(), "templets");// 2创建数据模型Map<String, Object> root = new HashMap<String, Object>();Map<String, Object> supplier = new HashMap<String, Object>();//supplier.put("info", new Supplier());此处简化如下supplier.put("pName", "Render");supplier.put("pId", "No1003484432");supplier.put("sName", "FreeMarker");root.put("data", supplier);// 3加载模板文件Template temp = cfg.getTemplate("index.html");// 4显示生成的数据// Writer out = new OutputStreamWriter(System.out);response.setCharacterEncoding("utf-8");PrintWriter out = response.getWriter();temp.process(root, out);out.flush();}}

编写service()

package com.mazun.weixin.service;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;import com.mazun.weixin.freemarker.FreemarkerViewRender;@WebServlet(urlPatterns = "/showInfo", name = "Render")public class Render extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {try {FreemarkerViewRender.respondView(request, response);} catch (Exception e) {e.printStackTrace();}}@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {super.doGet(req, resp);}}

创建Floder命名templets

创建File命名index.html

<!DOCTYPE html><html><head><meta charset="UTF-8"><title>freemarker渲染</title></head><body><div class="info"><#list data?values as proInfo> ${proInfo}</br> </#list></div></body></html>

部署项目在浏览器输入http://localhost:8080/WeChat/showInfo即可

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