Javascript 如何使用Express框架发出AJAX请求？

我想使用Express发送AJAX请求。我运行的代码如下所示：

var express = require('express');
var app = express();

app.get('/', function(req, res) {
   // here I would like to make an external
   // request to another server
});

app.listen(3000);

我该怎么做？

您可以使用图书馆

---

您不需要Express发出传出HTTP请求。使用本机模块进行以下操作：

var http = require('http');

var options = {
  host: 'example.com',
  port: '80',
  path: '/path',
  method: 'POST',
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded',
    'Content-Length': post_data.length
  }
};

var req = http.request(options, function(res) {
  // response is here
});

// write the request parameters
req.write('post=data&is=specified&like=this');
req.end();

---

因为你只是提出了一个get请求，所以我建议这样做

---

该代码来自该链接

文档：比最上面的答案简单得多！

var http = require('http');

var options = {
  host: 'example.com',
  port: '80',
  path: '/path',
  method: 'POST',
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded',
    'Content-Length': post_data.length
  }
};

var req = http.request(options, function(res) {
  // response is here
});

// write the request parameters
req.write('post=data&is=specified&like=this');
req.end();

var http = require('http');

http.get("http://www.google.com/index.html", function(res) {

  console.log("Got response: " + res.statusCode);

  if(res.statusCode == 200) {
    console.log("Got value: " + res.statusMessage);
  }

}).on('error', function(e) {
  console.log("Got error: " + e.message);

});