使用Nodejs、Express和AngularJS在浏览器中显示IP

Using Nodejs, Express and AngularJS to display IP in the browser

我正在学习 Nodejs 和 ExpressJS。我正在尝试使用 ExpressJS 和 2 个节点模块 (request-ip and geoip2) 获取用于地理定位的客户端 IP 地址,然后使用 AngularJS (1.x) 在浏览器中输出地理定位。

到目前为止,我的 Nodejs 和 Expressjs 代码已经有了

    var express = require('express');
// require request-ip and register it as middleware
var requestIp = require('request-ip');
// to convert the ip into geolocation coords
var geoip2 = require('geoip2');

// Init app
var app = express();
var port = process.env.PORT || 8000;

geoip2.init(); // init the db

//app.use(requestIp.mw({ attributeName: 'myCustomAttributeName'}));
var ip = '207.97.227.239';//67.183.57.64, 207.97.227.239

// respond to homepage req
app.get('/', function (req, res, next) {
    //var ip = req.myCustomAttributeName;// use this for live
    //var ip = '207.97.227.239';/* use this for testing */
    console.log('requestIP is ' + ip);
    next();
    // geolocation
    geoip2.lookupSimple(ip, function(error, result) {
      if (error) {
        console.log("Error: %s", error);
      }
      else if (result) {
        console.log(result);//ipType was causing console.log duplication, IDK why
      }
    });
});

// set static folder
app.use('/', express.static(__dirname + '/public'));

app.listen(port, function(){
    console.log('user location app is running');
});

而 Angular 我有

angular.module('UserLocation', []);

angular.module('UserLocation')
    .controller('MainController', MainController);

MainController.$inject = ['$http'];

function MainController($http) {
    var vm = this;
    vm.result = '';

    vm.message = 'Hello World';
    vm.getLocation = function() {
        console.log();
        return $http.get('localhost:8000', {
        params: {result: result}
      })
      .then(function(result){
        console.log(result);
        })
      }; 
    };
Angular 控制器中的

vm.result 用于执行地理定位的 geoip2 节点模块的结果。

我可以在控制台中获取 result 没问题,但我不确定如何将其传递给 Angular。我正在使用 $http 服务,但我不确定从这里到哪里...?

如何使用 $http 将 result 从 geoip2 节点模块传递到我的 Angular 控制器?

问题是你还没完成就调用 next。

app.get('/', function (req, res, next) {
    //next(); this line should be commented
    // geolocation
    geoip2.lookupSimple(ip, function(error, result) {
      if (error) 
        return res.status(400).json({error: 'Something happened'});

      return res.send(result);
    });
});

然后 angular

$http({
  method: 'GET',
  url: '/yourURL'
}).then(function (response) {
  console.log(response);
});

如果要使用用户IP获取位置:

app.get('/', function (req, res, next) {
    //next(); this line should be commented
    // geolocation

    var ip = req.headers['x-forwarded-for'] || 
     req.connection.remoteAddress || 
     req.socket.remoteAddress ||
     req.connection.socket.remoteAddress;

    geoip2.lookupSimple(ip, function(error, result) {
      if (error) 
        return res.status(400).json({error: 'Something happened'});

      return res.send(result);
    });
});