post方式でリダイレクトまたは転送する

public static void redirect(String url, Map,String> params, HttpServletResponse response) throws IOException {
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();
    out.println("/span>\"-//W3C//DTD HTML 4.01 Transitional//EN\">");
    out.println("");
    out.println(" ");
    out.println(" ");
    out.println("
\"submitForm\" action=\""+url+"\" method=\"post\">");
    Iterator it=params.keySet().iterator();
    while(it.hasNext()){
        String key=it.next();
        out.println("\"hidden\" name=\""+key+"\" value=\""+params.get(key)+"\"/>");
    }
    out.println("");
    out.println("window.document.submitForm.submit();");
    out.println(" ");
    out.println("");
    out.flush();
    out.close();
}