我尝试使用if , location 处理部分URL, 然后放行到 proxy_pass 反复尝试都提示下面的错误

nginx: [emerg] "proxy_pass" cannot have URI part in location given by regular expression, or inside named location, or inside "if" statement, or inside "limit_except" block in /etc/nginx/conf.d/info.mydomain.com.conf:112?

nginx: configuration file /etc/nginx/nginx.conf test failed

最后发现使用$request_uri变量可以解决上述问题.

       if ( $request_uri ~ "^/\w+\.xml$") {

            proxy_pass http://www.mydomain.com/xml$request_uri;

break;

       }

       if ( $request_uri ~ "^/public/datas/\w+\.xml$") {

            proxy_pass http://www.mydomain.com/$request_uri;

break;

       }