wwwを追加せずにnginxドメイン名を書き換えてwwwを追加します。

server {
	listen       80;
	server_name www.xxxx.net xxxx.net;
	#配置发布目录为/usr/local/nginx/data/rw-ows
	root  /usr/local/nginx/data/rw-ows;
	#添加以下405代码
	error_page 405 =200 $uri; 
	location / {
		proxy_next_upstream http_502 http_504 error timeout invalid_header;
		proxy_set_header Host  $host;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_pass http://rw-ows;
               #=========================CORS nginx配置=============================
               if ($http_origin ~* (https?://[^/]*\.roamwifi\.net(:[0-9]+)?)$) {
                 set $cors "true";
                }
               if ($request_method = 'OPTIONS') {
                     set $cors "${cors}options";  
                 }
    		if ($request_method = 'GET') {
                   set $cors "${cors}get";  
    		}
    		if ($request_method = 'POST') {
     		   set $cors "${cors}post";
    		}
   		if ($cors = "trueget") {
      		  add_header 'Access-Control-Allow-Origin' "$http_origin";
     		  add_header 'Access-Control-Allow-Credentials' 'true';
    		}
    		if ($cors = "truepost") {
       		 add_header 'Access-Control-Allow-Origin' "$http_origin";
       		 add_header 'Access-Control-Allow-Credentials' 'true';
       		 }
   		 if ($cors = "trueoptions") {
       		 #add_header 'Access-Control-Allow-Origin' "$http_origin";
                  add_header 'Access-Control-Allow-Origin' '*';  
       		 add_header 'Access-Control-Allow-Credentials' 'true';
       		 add_header 'Access-Control-Max-Age' 1728000;
       		 add_header 'Access-Control-Allow-Headers' 'Authorization,Content-Type,Accept,Origin,User-Agent,DNT,Cache-Control,X-Mx-ReqToken,Keep-Alive,X-Requested-With,If-Modified-Since';
                 add_header 'Content-Length' 0;
                 add_header 'Content-Type' 'text/plain charset=UTF-8';
                 #return 200;
                  return 204;
     		 }
	}
	#动态页面交给http://rw-ows，
	location ~ .*\.(jsp|do)?$ {
		proxy_set_header Host  $host;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_pass http://rw-ows;
	}
	#配置Nginx动静分离，定义的静态页面直接从Nginx发布目录读取。
	location ~ .*\.(html|gif|jpg|jpeg|bmp|png|ico|txt|js|css|swf)$ {
		root /usr/local/nginx/data/xxxx;
		#expires定义用户浏览器缓存的时间为1天，如果静态页面不常更新，可以设置更长，这样可以节省带宽和缓解服务器的压力
		expires      1d;
	}
	
        location = /anon_login.jsp {
                return         301 https://$server_name$request_uri;
        }
        location = /anon_register.jsp {
                return         301 https://$server_name$request_uri;
        }
        location = /anon_forgetpwd.jsp {
                return         301 https://$server_name$request_uri;
        }
        if ( $host != 'www.xxxx.net' ) {
          rewrite "^/(.*)$" http://www.xxxx.net/$1 permanent; 
         } 
}

以上就介绍了nginx域名重写 不加www 转到加www.，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。