思路分析：
监听80端口请求强制跳转到443端口处理。
配置实现
server {
listen 443 ssl;
ssl on;
server_name 二级域名;#例如：www.baidu.com
#charset koi8-r;
ssl_certificate /usr/local/nginx-1.8.1/cert/SSL证书.pem;
ssl_certificate_key /usr/local/nginx-1.8.1/cert/SSL证书.key;
#charset koi8-r;
#access_log logs/host.access.log main;
charset utf-8;
location / {
proxy_pass http://127.0.0.1:8080;#反向代理到后端服务器
index index.html index.htm;
}
}
server {
listen 80;
server_name 二级域名;#例如：www.baidu.com
#charset koi8-r;
#access_log logs/host.access.log main;
rewrite ^(.*) https://$server_name$1 permanent;#80端口请求都强制跳转到443端口进行处理
charset utf-8;
location / {
index index.html index.htm;
}
}