NGINX implements URL rewriting through rewrite

$args : This variable is equal to the parameters in the request line, same as $query_string
$content_length : The Content-length field in the request header.
$content_type : The Content-Type field in the request header.
$document_root : The value specified in the root directive for the current request.
$host : The request host header field, otherwise the server name.
$http_user_agent : client agent information
$http_cookie : client cookie information
$limit_rate : This variable can limit the connection rate.
$request_method : The action requested by the client, usually GET or POST.
$remote_addr : The IP address of the client.
$remote_port : The port of the client.
$remote_user : The username that has been authenticated by the Auth Basic Module.
$request_filename : The file path of the current request, generated by the root or alias directive and the URI request.
$scheme : HTTP method (eg http, https).
$server_protocol : The protocol used by the request, usually HTTP/1.0 or HTTP/1.1.
$server_addr : The server address, which can be determined after a system call.
$server_name : Server name.
$server_port : The port number where the request arrives at the server.
$request_uri : The original URI containing the request parameters, excluding the hostname, eg: "/foo/bar.php?arg=baz".
$uri : The current URI without request parameters, $uri does not contain the hostname, such as "/foo/bar.html".
$document_uri : Same as $uri.

Symbol explanation:
^ matches the beginning of the string
/ matches the delimiter of the domain name
. matches any character except a newline
* Repeat zero or more times
(.*) matches any character
.* matches any text
$ matches the end of the string

example

server

{

listen 80;

server_name www.xyz.com;

index index.htm index.php;

root /export/home/www

//The following conditions cannot use mathematical operations. The function implemented is to visit www.abc.com/index.php?type=2&tid=id12345

//All jump to www.xyz.com/index.php?type=2&tid=id12345

if ($host = "www.abc.com" ){

rewrite ^/(.*)$ http://www.xyz.com/$1$2 permanent;

}

# If the file does not exist then return 400 if (!-f $request_filename) { return 400; } # If host is not xuexb.com, then 301 to xuexb.com if ( $host != "xuexb.com" ){ rewrite ^/(.*)$ https://xuexb.com/$1 permanent; } # If the request type is not POST then return 405 if ($request_method = POST) { return 405; } # If there is a=1 in the parameter then 301 to the specified domain name if ($args ~ a=1) { rewrite ^ http://example.com/ permanent; }

NGINX implements URL rewriting through rewrite

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