linux express配置ssl证书，开启https访问

1.下载ssl证书的Nginx版本，在项目根目录新建https空文件夹，把crt文件和key文件复制到https文件夹中;

2.安装依赖：npm i fs http https

3.修改www文件的内容：

var https = require('https'); var fs = require('fs'); var path = require('path');   var privateCrt = fs.readFileSync(path.join(process.cwd(), 'https/xxxx.crt'), 'utf8'); var privateKey = fs.readFileSync(path.join(process.cwd(), 'https/xxxx.key'), 'utf8'); const HTTPS_OPTOIN = {   key: privateKey,   cert: privateCrt }; /**  * Get port from environment and store in Express.  */
var port = normalizePort(process.env.PORT || '8000'); app.set('port', port);
/**  * Create HTTP server.  */
var server = https.createServer(HTTPS_OPTOIN,app);