如何在Nginx服务器上安装SSL证书

#user  nobody;worker_processes  1;#error_log  logs/error.log;#error_log  logs/error.log  notice;#error_log  logs/error.log  info;#pid        logs/nginx.pid;events {    worker_connections  1024;}http {    include       mime.types;    default_type  application/octet-stream;    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '    #                  '$status $body_bytes_sent "$http_referer" '    #                  '"$http_user_agent" "$http_x_forwarded_for"';    #access_log  logs/access.log  main;    sendfile        on;    #tcp_nopush     on;    #keepalive_timeout  0;    keepalive_timeout  65;    #gzip  on;    server {        listen       80;        server_name  xxx.com;#替换成你的域名        location / {            rewrite ^(.*)$ https://xxx.com/$1 permanent;#替换成你的域名        }    }    server {        listen 443;        server_name xxx.com;  # 替换成你的域名        ssl on;   #设置为on启用SSL功能。        root html;        index index.html index.htm;        ssl_certificate cert/2946730_www.xxx.com.pem;   #替换成你的pem文件名称        ssl_certificate_key cert/2946730_www.xxx.com.key;   #替换成你的key文件名称        ssl_session_timeout 5m;        ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;  #使用此加密套件。        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;   #使用该协议进行配置。        ssl_prefer_server_ciphers on;           location / {            proxy_pass http://localhost:8080/;  #请求转发        }    }}