第一步：申请SSL证书

（以免费的IP SSL证书为例）
https://www.bilibili.com/read/cv15050461
参考如上文章进行获取
遇到的问题：
1、conf文件里找不到location和server
解决：在/etc/nginx/sites-available/default
加入如下代码：

location /.well-known/pki-validation {
            alias html/;
    } 

2、怎么创建带点的文件夹 mkdir就行
3、重启nginx语句 nginx -s reload

–配置文件路径：/etc/nginx
–日志文件路径：/var/log/nginx
–html目录：/usr/share/nginx/html

4、https的默认端口创建
在配置文件加入下面一段

server {
    listen 443 ssl http2;
    server_name xxxxxxx;

    access_log   /var/log/nginx/nginx.vhost.access.log;
    error_log    /var/log/nginx/nginx.vhost.error.log;

    ssl_certificate      /etc/nginx/ssl/certificate.crt;
    ssl_certificate_key  /etc/nginx/ssl/private.key;

    ssl_stapling on;
    ssl_stapling_verify on;
    ssl_trusted_certificate /etc/nginx/ssl/certificate.crt;
    resolver 1.1.1.1 1.0.0.1 119.29.29.29 valid=300s;
    resolver_timeout 30s;

    ssl_session_cache    shared:SSL:10m;
    ssl_session_timeout  1d;
    ssl_session_tickets off;

    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305;
    ssl_prefer_server_ciphers on; 
}

第二步：写flask代码

from flask import Flask, jsonify, request
from flask_sslify import SSLify
app = Flask(__name__)
sslify = SSLify(app)
context = ("certificate.crt","private.key")

@app.route('/hello', methods=["GET"])
def hello():
    return "hello world"


@app.route('/test/first/post', methods=["POST"])
def first_post():
    my_json = request.get_json()
    print(my_json)
    get_name = my_json.get("name")
    get_age = my_json.get("age")
    get_age += 10
    return jsonify(namee=get_name, agee=get_age)


if __name__ == '__main__':
    app.run(debug=True, port=5000, host='0.0.0.0',ssl_context=context)