一、 在web.xml中需要配置的有兩個地方：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <filter>
        <!--過濾器名字-->
        <filter-name>Struts2</filter-name>
        <!--過濾器所支援的Struts2類-->
        <filter-class>
            org.apache.Struts2.dispatcher.FilterDispatcher
        </filter-class>
    </filter>
    <filter-mapping>
        <!--過濾器攔截名字-->
        <filter-name>Struts2</filter-name>
        <!--過濾器攔截檔案路徑名字-->
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>
 

二、使用Struts.xml實現頁面導航定義

<?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>
<!--Action所在包定義-->
    <package name="C01" namespace="/" extends="struts-default">
 
        <default-action-ref name="index" />
 <!--全域性頁面導航定義-->
        <global-results>
            <result name="error">/WEB-INF/jsp/error.jsp</result>
        </global-results>
 
        <global-exception-mappings>
            <exception-mapping exception="java.lang.Exception" result="error"/>
        </global-exception-mappings>
 <!--Action名字，類以及導航頁面定義-->
        <!--直接導航的Action定義-->
        <action name="index">
            <result>/jsp/login.jsp</result>
        </action>
        <!--通過Action類處理才導航的Action定義-->
        <action name="Login"
                class="com.example.struts.action.LoginAction">
            <result name="input">/jsp/login.jsp</result>
            <reuslt name="success">/jsp/success.jsp</reuslt>
        </action>
    </package>
 
    <include file="example.xml"/>
 
    <!-- Add packages here -->
 
</struts>