Will a certificate for www.example.com also work for example.com?
用于 www.example.com 的证书是否也能用于 example.com？
No. If you want your site to be referenced by both domain names (www.example.com and example.com), you must request a certificate that includes both names.
否。如果您希望自己的站点能够被两个域名（www.example.com 和 example.com）引用，则必须请求包含这两个名称的证书。