nginx域名自動跳轉

目的：將所有wangqiao123.com abc.wangqiao123.com 域名自動跳轉到www.wangqiao123.com

server {
                 listen             80;
                 server_name    wangqiao123.com abc.wangqiao123.com;
                 charset    utf-8;
                 index index.html index.htm index.php;
                 root /usr/local/nginx/htdocs;
                 if ($http_host !~ "^www\.wangqiao123\.com$"){
                                rewrite ^(.*) http://www.wangqiao123.com$1 redirect;
                 }
                 .........
}