Nginx配置实现非www链接重定向到带www的HTTPS站点问题求助

开发者阿泽

2026-10-3

配置错误原因

监听443端口的业务server块同时绑定了example.com和www.example.com，用户访问https://example.com时会直接进入该块处理，不会触发任何跳转规则
80端口的原有重定向规则仅完成了HTTP转HTTPS，没有将非www域名跳转为带www的域名
后续新增的default_server规则和同端口下明确配置了server_name的块冲突，Nginx匹配请求时会优先走server_name完全匹配的块，default_server的规则不会生效

正确完整配置

替换你的/etc/nginx/sites-available/example.com全部内容为以下配置：

# 处理所有非www的HTTPS请求跳转
server {
    listen [::]:443 ssl ipv6only=on;
    listen 443 ssl;
    server_name example.com;

    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

    return 301 https://www.example.com$request_uri;
}

# 带www的HTTPS业务站点配置
server {
    listen [::]:443 ssl ipv6only=on;
    listen 443 ssl;
    server_name www.example.com;

    root /var/www/example.com;
    index index.html index.htm index.nginx-debian.html;

    location / {
        try_files $uri $uri/ =404;
    }

    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
}

# 所有HTTP请求统一跳转对应HTTPS站点
server {
    listen 80;
    listen [::]:80;
    server_name example.com www.example.com;

    return 301 https://$host$request_uri;
}