使用过滤器还是出现中文乱码问题

配了过滤器后还是出现中文乱码，新人求问是哪里出错了吗？（web.xml中已配置)

import java.io.IOException;
import java.io.UnsupportedEncodingException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;

public class CharacterEncodingFilter implements Filter {

public void doFilter(ServletRequest req, ServletResponse resp,
        FilterChain chain) throws IOException, ServletException {


    HttpServletRequest request = (HttpServletRequest) req;
    HttpServletResponse response = (HttpServletResponse) resp;

    request.setCharacterEncoding("UTF-8");
    response.setCharacterEncoding("UTF-8");
    response.setContentType("text/html;charset=UTF-8");

    chain.doFilter(new MyRequest(request), response);


}

public void init(FilterConfig filterConfig) throws ServletException {
    // TODO Auto-generated method stub

}

public void destroy() {
    // TODO Auto-generated method stub

}

}

class MyRequest extends HttpServletRequestWrapper{
private HttpServletRequest request;
public MyRequest(HttpServletRequest request) {
super(request);
this.request = request;

}
@Override
public String getParameter(String name) {

    String value = this.request.getParameter(name);
    if(value==null){
        return null;
    }
    if(!this.request.getMethod().equalsIgnoreCase("get")){
        return value;
    }
    try {
        value = new String(value.getBytes("iso8859-1"),"UTF-8");
    } catch (UnsupportedEncodingException e) {
        throw new RuntimeException(e);
    }
    return value;
}

}

建议看一下eclipse、jsp所用编码，还有就是镜像服务器的xml配置文件中是否配了utf-8

value.getBytes("iso8859-1")也设置成utf-8看看？