新建项目

1. 添加依赖

   <dependency>
       <groupId>org.apache.struts</groupId>
       <artifactId>struts2-core</artifactId>
       <version>2.5.1</version>
   </dependency>
   <dependency>
       <groupId>org.apache.struts</groupId>
       <artifactId>struts2-json-plugin</artifactId>
       <version>2.5.1</version>
       <scope>compile</scope>
   </dependency>
   <dependency>
       <groupId>javax.servlet</groupId>
       <artifactId>javax.servlet-api</artifactId>
       <version>3.0.1</version>
   </dependency>
   

2. resource目录下添加struts.xml文件

   <?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="default" extends="struts-default" namespace="/">
   
   </package>
   </struts>
   

3. web.xml中的web-app标签中添加struts2的filter

   <filter>
   	<filter-name>struts2</filter-name>
   	<filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
   </filter>
   <filter-mapping>
   	<filter-name>struts2</filter-name>
   	<url-pattern>/*</url-pattern>
   </filter-mapping>