Struts里提交中文表单到ActionForm的乱码问题

     package jp.co.ricoh.gtis.others.profile.filters;

    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 SetCharacterEncodingFilter implements Filter {
     private String encoding;
     public void init(FilterConfig filterConfig) throws ServletException {
      // TODO Auto-generated method stub
      this.encoding=filterConfig.getInitParameter("encoding");
     }

     public void doFilter(ServletRequest request, ServletResponse response,
       FilterChain chain) throws IOException, ServletException {
      // TODO Auto-generated method stub
      request.setCharacterEncoding(this.encoding);
      chain.doFilter(request,response);
     }

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

     }

    }

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