How to change charset in struts2 to utf-8

Hi I have testfield in which I want to put test not in English(for example into Russian) but in my action class I get instead of text only ?????????. I trying to write simple filter which described Parameters charset conversion in struts2

but it still do not work.. can somebody help me

update I have this

<s:textfield key="index.login" name="login" />

I want to put into it test in Russian language and then send it to my action.but in my action class I get instead of text only ?????????.to fix this problem I need to change charset into utf8 instead of win1251.

Create a filter:

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class CharacterEncodingFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig)
            throws ServletException {
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
            throws IOException, ServletException {
        servletRequest.setCharacterEncoding("UTF-8");
        servletResponse.setContentType("text/html; charset=UTF-8");
        filterChain.doFilter(servletRequest, servletResponse);
    }

    @Override
    public void destroy() {

    }
}

Declare it into your web.xml:

<filter>
    <filter-name>CharacterEncodingFilter</filter-name>
    <filter-class>your.package.filter.CharacterEncodingFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

And your're good to go. Also make sure that your every JSP page contains: <%@ page contentType="text/html;charset=UTF-8" language="java" %>. If your application is running on tomcat, make sure your add URIEncoding="UTF-8" attribute to your Connector element.