Struts2搭建demo

以struts-2.3.24为例。

搭建Struts2环境步骤：

1、下载相关jar包

     Apache Struts官方网站 http://struts.apache.org/、http://people.apache.org/builds/struts/

     struts-2.5.2\apps ：样例包
     struts-2.5.2\docs ：文档包
     struts-2.5.2\docs\struts2-core-apidocs ：核心api
     struts-2.5.2\docs\struts2-plugins ：插件api
     struts-2.5.2\lib：驱动包
     struts-2.5.2\src：源码

2、创建web项目

　  File -> New -> Dynamic Web Project 

3、创建并完善相关配置文件

4、创建Action并测试启动（访问路径http://localhost:8080/HelloWord/helloword.action）

     引入jar包 

     web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <display-name>HelloWord</display-name>

    <!-- 过滤器 -->
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <!-- 过滤器filter映射 -->
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

     struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>
    <package name="default" namespace="/" extends="struts-default">
        <action name="helloword" class="com.action.HelloWord">
            <result>/result.jsp</result>
        </action>
    </package>
</struts>

     HelloWord.java

package com.action;

import com.opensymphony.xwork2.ActionSupport;

public class HelloWord extends ActionSupport {

    @Override
    public String execute() throws Exception {
        System.out.println("执行action");
        return SUCCESS;
    }
}