如何在servlet过滤器中重定向？

HttpServletResponse response = (HttpServletResponse) res;

response.sendRedirect("目标URL");

return;

import java.io.IOException;
import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;

public class RedirectFilter implements Filter {

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletResponse httpResponse = (HttpServletResponse) response;
        httpResponse.sendRedirect("目标URL");
        return;
    }

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

    @Override
    public void destroy() {
    }
}