根域名自动跳转到 www 二级域名

server {
    listen 80;
    #填写绑定证书的域名
    server_name ochaly.com; 
    return 301 http://www.ochaly.com$request_uri; 
}

server {
    listen 80;
    #填写绑定证书的域名
    server_name www.ochaly.com;

    location / {
      # 网站主页路径
      root html;
      index  index.html index.htm;
    }
}

if ($host != 'www.ochaly.com') {
    rewrite ^/(.*)$ https://www.ochaly.com/$1 permanent;
}

./nginx -s reload