Nodejs、express获取IP地址

 写登录接口的时候，突然想如果登录的时候保存当前登录的IP会怎样，然后我就开始了，嘿嘿

1、当前获取请求的IP

1.  
   //获取当前用户的IP
2.  
   let getClientIp = function (req) {
3.  
   return req.headers['x-forwarded-for'] ||
4.  
   req.connection.remoteAddress ||
5.  
   req.socket.remoteAddress ||
6.  
   req.connection.socket.remoteAddress || '';
7.  
   };
8.  
   let ip = getClientIp(req).match(/\d .\d .\d .\d /);
9.  
   console.log(ip);
10.  
    ip = ip ? ip.join('.') : null;
11.  
    console.log(ip);

2、获取当前本机IP地址

1.  
   const os = require('os');
2.  
   //获取本机ip
3.  
   let getIPAdress = function() {
4.  
   var interfaces = os.networkInterfaces();
5.  
   for (var devName in interfaces) {
6.  
   var iface = interfaces[devName];
7.  
   for (var i = 0; i < iface.length; i ) {
8.  
   var alias = iface[i];
9.  
   if (alias.family === 'IPv4' && alias.address !== '127.0.0.1' && !alias.internal) {
10.  
    return alias.address;
11.  
    }
12.  
    }
13.  
    }
14.  
    }
15.  
    let ip = getIPAdress();
16.  
    console.log(ip);//196.128.239.1

 感觉还不错！

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