1.用户注册页面register.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java"%>   
<%@ taglib prefix="s" uri="/struts-tags"%>   
<html>   
	<head>
	</head>

	<body>
		<form action="register.action" method="post">
			<I><font face="楷体_GB2312" color="#FF0000"><s:fielderror />
			</font> </I>
			<!-- 读取显示提示信息 -->
			<table>
				<tr>
					<td>
						用户名:
					</td>
					<td>
						<input type="text" name="user.userName">
					</td>
				</tr>
				<tr>
					<td>
						密码:
					</td>
					<td>
						<input type="password" name="user.password">
					</td>
				</tr>
				<tr>
					<td>
						确认密码:
					</td>
					<td>
						<input type="password" name="user.rePassword">
					</td>
				</tr>
				<tr>
				<tr>
					<td colspan="2">
						<s:submit value="注册"></s:submit>
					</td>
				</tr>
			</table>
		</form>
	</body>
</html>
2.注册成功result.jsp 

<%@ page contentType="text/html;charset=UTF-8" language="java" %>   
<%@ taglib prefix="s" uri="/struts-tags" %>   
<html>   
<body>   
<center><h7><b>Result!</b></h7></center>   
<br>   
<center>   
${user.userName} <br>      
${user.password} <br>
</center>  </html> 
3.注册处理action RegisterAction 

package com.zyl.action;

import javax.servlet.http.HttpServletRequest;   
import org.apache.struts2.ServletActionContext;   
import com.zyl.bean.User;   
import com.opensymphony.xwork2.ActionSupport;   
public class RegisterAction extends ActionSupport {   


private User user;   
@Override  
public String execute() throws Exception {   
   if(!(user.getPassword().equals(user.getRePassword()))){   
      this.addFieldError("password", "请输入相同的密码");   
      return "input";   
   }    
   else  
   {    
    HttpServletRequest request = ServletActionContext.getRequest ();   
    request.setAttribute("user", user);   
    return SUCCESS;   
   }   

}   
public User getUser() {   
   return user;   
}   
public void setUser(User user) {   
   this.user = user;   
}   
}   

4. 用户Bean User.java 

package com.zyl.bean;       
import java.util.Date;       
public class User {       
private String userName;       
private String password;       
private String rePassword;       
public String getPassword() {       
   return password;       
}       
public void setPassword(String password) {       
   this.password = password;       
}       
public String getRePassword() {       
   return rePassword;       
}       
public void setRePassword(String rePassword) {       
   this.rePassword = rePassword;       
}       
public String getUserName() {       
   return userName;       
}       
public void setUserName(String userName) {       
   this.userName = userName;       
}       

}      
5.配置验证文件RegisterAction-validation.xml 
<!DOCTYPE validators PUBLIC   
        "-//OpenSymphony Group//XWork Validator 1.0.2//EN"  
        "http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">   
<validators>       
<field name="user.userName">       
   <!-- 验证字符串不能为空 -->       
   <field-validator type="requiredstring">       
    <!-- 去空格 -->       
    <param name="trim">true</param>       
    <!-- 错误提示信息 -->       
    <message>用户名不能为空</message>       
   </field-validator>       

   <!-- 验证字符串长度 -->       
   <field-validator type="stringlength">       
    <param name="minLength">2</param>       
    <param name="maxLength">20</param>       
    <message>用户名长度应在2到18个字符间</message>       
   </field-validator>       
</field>       

<field name="user.password">       
   <field-validator type="requiredstring">       
    <param name="trim">true</param>       
    <message>密码不能为空</message>       
   </field-validator>       

   <field-validator type="stringlength">       
    <param name="minLength">6</param>       
    <param name="maxLength">18</param>       
    <message>密码长度应在6到18个字符之间</message>       
   </field-validator>       
</field>       
</validators>    
6.struts2框架默认加载的配置文件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>        
    <constant name="struts.custom.i18n.resources" value="messageResource"></constant>       

    <package name="user" extends="struts-default">       
    <action name="register" class="com.zyl.action.RegisterAction">       
       <result name="success">/result.jsp</result>       
       <result name="input">/register.jsp</result>       
    </action>       
    </package>       
</struts>      
7.web服务器启动时加载Struts 配置文件 web.xml 

<web-app 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">       
<filter>       
   <filter-name>struts-cleanup</filter-name>       
   <filter-class>       
    org.apache.struts2.dispatcher.ActionContextCleanUp       
   </filter-class>       
</filter>       
<filter>       
   <filter-name>struts2</filter-name>       
   <filter-class>       
    org.apache.struts2.dispatcher.FilterDispatcher       
   </filter-class>       
</filter>       
<filter-mapping>       
   <filter-name>struts-cleanup</filter-name>       
   <url-pattern>/*</url-pattern>       
</filter-mapping>       
<filter-mapping>       
   <filter-name>struts2</filter-name>       
   <url-pattern>/*</url-pattern>       
</filter-mapping>       

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