在创建好WebProject后，就可以开始进行Struts2的环境配置，可以到Struts2官网下载，本环境使用struts-2.3.24.1版本。
首先导入必要的jar包到WebProject的/WebRoot/WEB-INF/lib下，具体jar包如下图所示：
接着修改web.xml文件，加入struts2的配置信息，文件内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>myStruts2</display-name>
<!-- struts2 configuration -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
</filter-class>
<init-param>
<param-name>actionPackages</param-name>
<param-value>cn.net.bysoft</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
web.xml的配置
现在struts2的环境配置已经建立完毕，可以编写一个HelloWorld应用进行测试了，首先创建两个jsp页面，一个是index.jsp，里面写一个<a href="helloWorld">测试HelloWorld应用</a>连接到Action。接着创建一个hello.jsp页面用来显示<h1>Hello World</h1>，具体代码如下：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP ‘index.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<a href="helloWorld">test helloworld</a>
</body>
</html>
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP ‘hello.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
HelloWorld <br>
</body>
</html>
hello.jsp
页面创建完毕后，开始编写Action类，创建一个普通的类，继承ActionSupport类。编写execute()方法进行页面控制，返回一个成功的标识SUCCESS，具体代码如下：
package cn.net.bysoft;
import com.opensymphony.xwork2.ActionSupport;
public class HelloWorldAction extends ActionSupport {
/**
*
*/
private static final long serialVersionUID = 6649419922238488318L;
@Override
public String execute() throws Exception {
// TODO Auto-generated method stub
return SUCCESS;
}
}
HelloWorldAction的代码
最后在/src目录下创建一个struts.xml文件，对我们编写的Action进行配置，文件内容如下：
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<package name="struts2_3_24_1" extends="struts-default">
<action name="helloWorld" class="cn.net.bysoft.HelloWorldAction">
<result>/hello.jsp</result>
</action>
</package>
</struts>
struts.xml的内容
以下是项目结构：
时间： 2024-10-26 08:31:16