[parameters] How can query string parameters be forwarded through a proxy_pass with nginx?

upstream apache {
   server 127.0.0.1:8080;
}
server{
   location ~* ^/service/(.*)$ {
      proxy_pass http://apache/$1;
      proxy_redirect off;
   }
 }

The above snippet will redirect requests where the url includes the string "service" to another server, but it does not include query parameters.

I use a slightly modified version of kolbyjack's second approach with ~ instead of ~*.

location ~ ^/service/ {
  proxy_pass http://apache/$uri$is_args$args;
}

github gist https://gist.github.com/anjia0532/da4a17f848468de5a374c860b17607e7

#set $token "?"; # deprecated

set $token ""; # declar token is ""(empty str) for original request without args,because $is_args concat any var will be `?`

if ($is_args) { # if the request has args update token to "&"
    set $token "&";
}

location /test {
    set $args "${args}${token}k1=v1&k2=v2"; # update original append custom params with $token
    # if no args $is_args is empty str,else it's "?"
    # http is scheme
    # service is upstream server
    #proxy_pass http://service/$uri$is_args$args; # deprecated remove `/`
    proxy_pass http://service$uri$is_args$args; # proxy pass
}

#http://localhost/test?foo=bar ==> http://service/test?foo=bar&k1=v1&k2=v2

#http://localhost/test/ ==> http://service/test?k1=v1&k2=v2

you have to use rewrite to pass params using proxy_pass here is example I did for angularjs app deployment to s3

S3 Static Website Hosting Route All Paths to Index.html

adopted to your needs would be something like

location /service/ {
    rewrite ^\/service\/(.*) /$1 break;
    proxy_pass http://apache;
}

if you want to end up in http://127.0.0.1:8080/query/params/

if you want to end up in http://127.0.0.1:8080/service/query/params/ you'll need something like

location /service/ {
    rewrite ^\/(.*) /$1 break;
    proxy_pass http://apache;
}

I modified @kolbyjack code to make it work for

http://website1/service
http://website1/service/

with parameters

location ~ ^/service/?(.*) {
    return 301 http://service_url/$1$is_args$args;
}

worked with adding $request_uri proxy_pass http://apache/$request_uri;

To redirect Without Query String add below lines in Server block under listen port line:

if ($uri ~ .*.containingString$) {
           return 301 https://$host/$uri/;
}

With Query String:

if ($uri ~ .*.containingString$) {
           return 301 https://$host/$uri/?$query_string;
}