HttpServletResponse sendRedirect 永久 [英] HttpServletResponse sendRedirect permanent

问题描述

这将使用临时 302 HTTP 状态代码重定向请求:

This will redirect a request with a temporary 302 HTTP status code:

HttpServletResponse response;
response.sendRedirect("http://somewhere");

但是是否可以使用永久 301 HTTP 状态代码重定向它?

But is it possible to redirect it with a permanent 301 HTTP status code?

推荐答案

您需要手动设置响应状态和 Location 标头.

You need to set the response status and the Location header manually.

response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
response.setHeader("Location", "http://somewhere/");

在 sendRedirect() 之前设置状态将不起作用，因为 sendRedirect() 会在之后将其覆盖为 SC_FOUND.

Setting the status before sendRedirect() won't work as sendRedirect() would overridde it to SC_FOUND afterwards.

这篇关于HttpServletResponse sendRedirect 永久的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！