一个关于nginx配置https的问题

需要开发一个微信小程序
项目是springboot搭的
打成jar包放到服务器上后跑
因为给了域名（已备案）和必须得是https请求（微信）
所以准备采用nginx代理来完成
去阿里云申请了个免费的ssl证书下载后配置到nginx.conf里
然而配置完后，用谷歌浏览器测试访问 仍然是http请求（能访问到接口接收到数据），https请求则显示无法访问此网站
以下这是我nginx的配置，不知错误出在哪，看了nginx的错误日志 并生成错误记录。。。

#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 cpsm.makepower.cc;
return 301 https://$host$request_uri;


#charset koi8-r;

#access_log logs/host.access.log main;

location / {
root html;
index index.html index.htm;
proxy_pass http://172.28.88.164:8686;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Port $server_port;
}

#error_page 404 /404.html;

# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}

# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}


# another virtual host using mix of IP-, name-, and port-based configuration
#
#server {
# listen 8000;
# listen somename:8080;
# server_name somename alias another.alias;

# location / {
# root html;
# index index.html index.htm;
# }
#}


# HTTPS server

server {
listen 443 ssl;
server_name cpsm.makepower.cc;

ssl_certificate C://nginx-1.16.1//ssl//2880195_cpsm.makepower.cc.pem;
ssl_certificate_key C://nginx-1.16.1//ssl//2880195_cpsm.makepower.cc.key;

ssl_session_cache shared:SSL:1m;
ssl_session_timeout 5m;

ssl_ciphers HIGH:!aNULL:!MD5;
ssl_prefer_server_ciphers on;

location / {
root html;
index index.html index.htm;
proxy_pass http://172.28.88.164:8686;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Port $server_port;
}
}

}