freemarker+struts2整合(四)

来源：互联网发布：数据监控是什么工作编辑：程序博客网时间：2024/06/07 19:33

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

<!-- https://mvnrepository.com/artifact/org.freemarker/freemarker --><dependency>  <groupId>org.freemarker</groupId>  <artifactId>freemarker</artifactId>  <version>2.3.23</version></dependency><!-- https://mvnrepository.com/artifact/org.apache.struts/struts2-core --><dependency>  <groupId>org.apache.struts</groupId>  <artifactId>struts2-core</artifactId>  <version>2.3.4.1</version></dependency><!-- https://mvnrepository.com/artifact/org.apache.struts.xwork/xwork-core --><dependency>  <groupId>org.apache.struts.xwork</groupId>  <artifactId>xwork-core</artifactId>  <version>2.3.4.1</version></dependency><!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 --><dependency>  <groupId>org.apache.commons</groupId>  <artifactId>commons-lang3</artifactId>  <version>3.1</version></dependency><!-- https://mvnrepository.com/artifact/ognl/ognl --><dependency>  <groupId>ognl</groupId>  <artifactId>ognl</artifactId>  <version>3.0.5</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">    <!--配置struts2核心过滤器-->    <filter>        <filter-name>struts2</filter-name>        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>    </filter>    <filter-mapping>        <filter-name>struts2</filter-name>        <url-pattern>*.action</url-pattern>    </filter-mapping>    <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></web-app>

3.配置struts.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts PUBLIC        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"        "http://struts.apache.org/dtds/struts-2.0.dtd"><struts>    <package name="freemarker" namespace="/user" extends="struts-default">        <action name="*" class="com.rabbit.servlet.FreeMarkerAction" method="{1}">            <result name="{1}">/{1}.html</result>        </action>    </package></struts>

4.编写静态页面

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

5.编写Action类

package com.rabbit.servlet;import com.opensymphony.xwork2.ActionContext;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;/** * Created by vip on 2017/12/16. */public class FreeMarkerAction {    public String index() {        ActionContext context = ActionContext.getContext();        List<Map<String, Object>> users = new ArrayList<>();        for (int i = 0; i < 5; i++) {            Map<String, Object> user = new HashMap<>();            user.put("firstname", "firstname" + i);            user.put("lastname", "lastname" + i);            users.add(user);        }        context.put("users", users);        return "index";    }}

6.部署项目启动

访问地址：http://localhost:8080/user/index.action

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