freemarker+servlet整合(三)

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前言：前面已经讲过了freemarker的入门，还不了解的可以到我的博客里面找来看。

先展示我的项目目录结构，我是用IDEA开发的

1.导包

需要导入servlet和freemarker两个包

<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --><dependency>  <groupId>javax.servlet</groupId>  <artifactId>javax.servlet-api</artifactId>  <version>4.0.0</version>  <scope>provided</scope></dependency><!-- https://mvnrepository.com/artifact/org.freemarker/freemarker --><dependency>  <groupId>org.freemarker</groupId>  <artifactId>freemarker</artifactId>  <version>2.3.23</version></dependency>

2.配置web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee"  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">    <servlet>        <servlet-name>freemarker</servlet-name>      <servlet-class>freemarker.ext.servlet.FreemarkerServlet</servlet-class>        <!--下面的配置freemarke的ftl文件或者html，jsp等页面的位置 -->        <init-param>            <param-name>TemplatePath</param-name>            <param-value>/</param-value>        </init-param>        <!-- 可选配置，上面的为必须配置        <init-param>            <param-name>NoCache</param-name>            <param-value>true</param-value>        </init-param>        <init-param>            <param-name>ContentType</param-name>            <param-value>text/html; charset=UTF-8</param-value>        </init-param>        <init-param>            <param-name>template_update_delay</param-name>            <param-value>0</param-value>        </init-param>        <init-param>            <param-name>default_encoding</param-name>            <param-value>ISO-8859-1</param-value>        </init-param>        <init-param>            <param-name>number_format</param-name>            <param-value>0.##########</param-value>        </init-param>         -->        <!-- 是否和服务器（tommcat)一起启动。-->        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>freemarker</servlet-name>        <url-pattern>*.html</url-pattern><!--页面的后缀，如果页面是ftl文件就写*.ftl,如果是html就写*.html-->    </servlet-mapping>    <!--定义自己的Servlet文件-->    <servlet>        <servlet-name>FreeMarkerServlet</servlet-name>        <servlet-class>com.rabbit.FreeMarkerServlet</servlet-class>    </servlet>    <!--定义拦截的路径访问就用/freemarker-->    <servlet-mapping>        <servlet-name>FreeMarkerServlet</servlet-name>        <url-pattern>/freemarker</url-pattern>    </servlet-mapping></web-app>

3.编写静态页面index.html
我这里使用list标签遍历

<html><head>    <title>FreeMarker Hello World</title></head><body><table class="datatable">    <#list users as user>        <tr>            <td>${user.firstname}</td> <td>${user.lastname}</td>        </tr>    </#list></table></body></html>

4.编写Servlet类

package com.rabbit;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;/** * Created by vip on 2017/12/15. */public class FreeMarkerServlet extends HttpServlet {    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        this.doGet(request, response);    }    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        System.out.println("----------------------------");        List<Map<String, Object>> users = new ArrayList<>();        for (int i = 0; i < 5; i++) {            Map<String, Object> user = new HashMap<>();            user.put("firstname", "rabbit" + i);            user.put("lastname", "fox" + i);            users.add(user);        }        request.setAttribute("users", users);        request.getRequestDispatcher("index.html").forward(request, response);    }}

5.部署项目启动

访问地址：http://localhost:8081/freemarker

效果：

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freemarker+servlet整合(三)

1.导包

2.配置web.xml

3.编写静态页面index.html我这里使用list标签遍历

4.编写Servlet类

5.部署项目启动

3.编写静态页面index.html
我这里使用list标签遍历