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用的是express模板。下载的是阿里云Nginx证书。配完nginx.conf，可以用 nginx -t; 检查一下，只要提示is ok和successful就行，

然后重启用 sudo service nginx reload; 如果提示‘Redirecting to /bin/systemctl reload nginx.service’，没有关系。

重点证书不仅要放在Nginx里，项目也是要读取的，没写项目的部分，导致一直连不上，以此为戒。

http{
#nginx.conf里的一些基本配置，此处省略，重点是以下部分

    #http配置
    upstream aaa.com{
        ip_hash; 
            server 127.0.0.1:4000;
    }

    server {
      listen       80;
        server_name  aaa.com www.aaa.com;
        location /{
            proxy_pass http://aaa.com;
            root /home/officialWebsite/public;
            index index.html;
       }
        
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
   }

     # https配置
    upstream bbb.com {
        server 127.0.0.1:4001;
   }
    
    server {
        listen 443 ssl;
         # listen [::]:443 ssl;
        server_name bbb.com;

        ssl_certificate /etc/nginx/xxx.pem;  # 替换为你的SSL证书路径
        ssl_certificate_key /etc/nginx/xxx.key;  # 替换为你的SSL私钥路径

        location / {
            proxy_pass https://bbb.com;
            root /home/officialWebsite/public;
            index index.html;
            #proxy_set_header Host $host;
            #proxy_set_header X-Real-IP $remote_addr;
            #proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            #proxy_set_header X-Forwarded-Proto $scheme;
          }

        error_page 404 /404.html;
        location = /404.html {
                root /usr/share/nginx/html;
        }

        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
            root /usr/share/nginx/html;
        }
    }
}

bin下的www要开2个端口，一个https,一个http指向。

#!/usr/bin/env node

/**
 * Module dependencies.
 */

var app = require('../app');
var debug = require('debug')('officialwebsite:server');
var http = require('http');
var https = require('https');
var fs=require("fs");
var path = require('path');

/**
 * Get port from environment and store in Express.
 */
var httpPort = '4000';//http的端口号
var httpsPort = '4001';//https的端口号
var port = normalizePort(process.env.PORT || httpPort);
app.set('port', port);

/**
 * Create HTTP server.
 */

var server = http.createServer(app);

/**
 * Listen on provided port, on all network interfaces.
 */

server.listen(port);
server.on('error', onError);
server.on('listening', onListening);

/**
 * Normalize a port into a number, string, or false.
 */

function normalizePort(val) {
  var port = parseInt(val, 10);

  if (isNaN(port)) {
    // named pipe
    return val;
  }

  if (port >= 0) {
    // port number
    return port;
  }

  return false;
}

/**
 * Event listener for HTTP server "error" event.
 */

function onError(error) {
  if (error.syscall !== 'listen') {
    throw error;
  }

  var bind = typeof port === 'string'
    ? 'Pipe ' + port
    : 'Port ' + port;

  // handle specific listen errors with friendly messages
  switch (error.code) {
    case 'EACCES':
      console.error(bind + ' requires elevated privileges');
      process.exit(1);
      break;
    case 'EADDRINUSE':
      console.error(bind + ' is already in use');
      process.exit(1);
      break;
    default:
      throw error;
  }
}

/**
 * Event listener for HTTP server "listening" event.
 */

function onListening() {
  var addr = server.address();
  var bind = typeof addr === 'string'
    ? 'pipe ' + addr
    : 'port ' + addr.port;
  debug('Listening on ' + bind);
  console.log('Listening on ' + bind);
}

var httpsweb={
  key:fs.readFileSync(path.join(__dirname, 'xxx.key')),//# 替换为你的SSL私钥路径
  cert:fs.readFileSync(path.join(__dirname, 'xxx.pem')),//# 替换为你的SSL证书路径
};
var sserver = https.createServer(httpsweb, app);
sserver.listen(httpsPort);
console.log('https',httpsPort)

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