JSP过滤器无法跳转，tomcat的本地测试

我的JSP没有前台只有包里写好的java类，用web.xml进行跳转
web.xml如下：
<?xml version="1.0" encoding="UTF-8"?>

index.jsp


（此处省略包名）.StatisticsContextListener


charsetfileter
（此处省略包名）.CharSetFilter


charsetfileter
/*

charsetfileter.java:
public class CharSetFilter implements Filter {
public void destroy() {
}

public void doFilter(ServletRequest request, ServletResponse response,
        FilterChain chain) throws IOException, ServletException {

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

}

public void init(FilterConfig arg0) throws ServletException {
    System.out.println("init");
}
}

问一下 chain.doFilter(request, response);这个方法怎么才能跳转到src文件下的包里的java方法？