代码实例:

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%
// 转到iq.jsp
out.clearBuffer();
response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
String param = request.getQueryString();
response.setHeader("Location","iq.jsp"+(param==null?"":("?"+param)));
%>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%
 // 转到iq.jsp
out.clearBuffer();
response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
String param = request.getQueryString();
response.setHeader("Location","iq.jsp"+(param==null?"":("?"+param)));
%> 

如上这段代码,将访问download.jsp的所有访问,永久重定向到 iq.jsp
参数也同时携带过去。

如果你的重定向是跨域的,或者使用完整路径,可以使用

response.setHeader("Location","http://www.laozizhu.com/iq.jsp"+(param==null?"":("?"+param)));
response.setHeader("Location","http://www.laozizhu.com/iq.jsp"+(param==null?"":("?"+param)));  

这样你就可以指定完整的转向域名了。

用常用方式实现的是302跳转:

response.sendRedirect(http://www.baidu.com);
response.sendRedirect("http://www.baidu.com"); 
02-03 06:07