</td>
  </tr>
</table>
<%
}
%>

-------------------------------------------------------------------------------------------------------

myRedirect.java

package com.util;

import javax.servlet.http.HttpServletRequest;
import java.util.Enumeration;

public class myRedirect    //对url的转换类
{
 public static String dealurl(HttpServletRequest request)
 {
  String url = "";
  url = request.getRequestURL()+"?";
  url +=param(request);
  if(url.indexOf("&")>-1)
   url=url.replaceAll("&","@#@");//实际上就是把有&的字符转化成了@#@
  return url;
 }
 public static String geturl(String url)//这个是还原方法
 {
  if(url.indexOf("@#@")>-1)
   url=url.replaceAll("@#@","&");
  return url;    
 }
 public static String param(HttpServletRequest request)
 {
  String url = "";
  Enumeration param = request.getParameterNames();//得到所有参数名
  while(param.hasMoreElements())
  {
   String pname = param.nextElement().toString();
   url += pname+"="+request.getParameter(pname)+"&";
  }
  if(url.endsWith("&"))
  {
   url = url.substring(0,url.lastIndexOf("&"));
  }
  return url;
 }
}
这样登录浏览器就会自动转到用户刚刚请求的地址