response.sendRedirect-无法解决响应

Question

登录成功后，我想调用另一个html页面。我有这段代码，但是当我尝试response.sendRedirect eclipse时抛出一个错误，提示“响应未解决”。请帮忙！

    package test;
    import java.io.IOException;
    import java.io.PrintWriter;

    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;

    public class login extends HttpServlet
    {
        protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
        {
            PrintWriter pw = res.getWriter();
            res.setContentType("text/html");

            String user = req.getParameter("userName");
            String pass = req.getParameter("userPassword");

            if(user.equals("test") && pass.equals("test@1"))
            {
                response.sendRedirect("http://www.google.com/");
                //pw.println("Login success...!");
            }
            else
            {
                pw.println("Login Failed....!");
            }
            pw.close();

        }

    }