Solved How can I make the 301 redirect rule take effect

I have switched from phpgedview to webtrees. The URL structure of webtrees and phpgedview is different.
I want to use the Rewrite rule for 301 redirects. I configured the redirect rule in nginx, but it doesn't work.
I checked that the default setting for webtrees is that it can still be accessed using the old URL of phpgedview.
This can result in a lot of duplicate content appearing on two different URLs. This is very unfriendly to search engines.
How can I make the 301 redirect rule take effect?

> I configured the redirect rule in nginx

Can you share the nginx configuration?

> but it doesn't work.

What happened? Give an example?

Nginx rule:
rewrite ^/individual.php?pid=(.*)&ged=(.*) /index.php?route=individual&xref=$1&ged=$2 permanent;

Example:
www.zisun.org/individual.php?pid=X333&ged=ke
And
www.zisun.org/index.php?route=individual&xref=X333&ged=ke

Both can access the same content. And the return http status code is 200.

Perhaps this rule is applied *after* your existing rules.

Since there is already a file individual.php in webtrees, this one is used.

I guess the file in webtrees should be updated to return a 301. Raise a ticket on github.

Is my nginx rule configuration error.
In the nginx rewrite rule, the "?" processing method is different.
However, the old URL can still be browsed by default, which is still very unfriendly to search engines.

Problem solved.