index.jsp

<%@ page  contentType="text/html; charset=UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
    <title>Hello World</title>
</head>
<body>
    <h2><s:text name="user"/></h2>
    <h2><s:property value="%{getText('user')}"/></h2>
        <h2><s:property value="%{getText('city')}"/></h2>
</body>
</html>
message.properties

user=Anonymous
city={0}Anonymous{1}

message_zh_CN.properties

user=user=\u5F20\u7389\u9F99
city={0}北京{1}


message_en_US.properties
user=zyl
city={0}BeiKing{1}

I18nTest.java
package com.zyl.Test;

import java.text.MessageFormat;
import java.util.Locale;
import java.util.ResourceBundle;

import javax.annotation.Resource;

import com.sun.corba.se.impl.protocol.giopmsgheaders.Message;

public class I18nTest {
	public static void main(String[] args) {
		Locale defaultLocale = Locale.getDefault();
		defaultLocale = Locale.US;
		ResourceBundle bundle = ResourceBundle.getBundle("message",defaultLocale);
		System.out.println(bundle.getString("user"));
		String city = MessageFormat.format(bundle.getString("city"),
				new String[] { "086", "010" });
		System.out.println(city);

	}
}


struts

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<constant name="struts.custom.i18n.resources" value="message"></constant>
<package name="*" extends="struts-default">
<action name="*" class="">
<result>/{1}.jsp
</result>
</action>
</package>
</struts>


web.xml


<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <filter>
  <filter-name>struts2</filter-name>
  <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
  </filter>
  <filter-mapping>
  <filter-name>struts2</filter-name>
  <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>