有很多种方法。然而，我所知道的最快的方法是使用带有body-parser的Express.js库。

var express = require("express");
var bodyParser = require("body-parser");
var app = express();

app.use(bodyParser.urlencoded({extended : true}));

app.post("/pathpostdataissentto", function(request, response) {
  console.log(request.body);
  //Or
  console.log(request.body.fieldName);
});

app.listen(8080);

这可以用于字符串，但我要更改bodyParser。urlencoded to bodyParser。如果POST数据包含json数组，则改为json。

更多信息:http://www.kompulsa.com/how-to-accept-and-parse-post-requests-in-node-js/

如果你使用Express (Node.js的高性能、高级web开发)，你可以这样做:

HTML:

<form method="post" action="/">
    <input type="text" name="user[name]">
    <input type="text" name="user[email]">
    <input type="submit" value="Submit">
</form>

API客户端:

fetch('/', {
    method: 'POST',
    headers: {
        'Content-Type': 'application/json'
    },
    body: JSON.stringify({
        user: {
            name: "John",
            email: "john@example.com"
        }
    })
});

Node.js:(自Express v4.16.0起)

// Parse URL-encoded bodies (as sent by HTML forms)
app.use(express.urlencoded());

// Parse JSON bodies (as sent by API clients)
app.use(express.json());

// Access the parse results as request.body
app.post('/', function(request, response){
    console.log(request.body.user.name);
    console.log(request.body.user.email);
});

Node.js:(对于Express <4.16.0)

const bodyParser = require("body-parser");

/** bodyParser.urlencoded(options)
 * Parses the text as URL encoded data (which is how browsers tend to send form data from regular forms set to POST)
 * and exposes the resulting object (containing the keys and values) on req.body
 */
app.use(bodyParser.urlencoded({
    extended: true
}));

/**bodyParser.json(options)
 * Parses the text as JSON and exposes the resulting object on req.body.
 */
app.use(bodyParser.json());

app.post("/", function (req, res) {
    console.log(req.body.user.name)
});

如果你更喜欢使用纯Node.js，那么你可以提取POST数据，如下所示:

// Dependencies const StringDecoder = require('string_decoder').StringDecoder; const http = require('http'); // Instantiate the HTTP server. const httpServer = http.createServer((request, response) => { // Get the payload, if any. const decoder = new StringDecoder('utf-8'); let payload = ''; request.on('data', (data) => { payload += decoder.write(data); }); request.on('end', () => { payload += decoder.end(); // Parse payload to object. payload = JSON.parse(payload); // Do smoething with the payload.... }); }; // Start the HTTP server. const port = 3000; httpServer.listen(port, () => { console.log(`The server is listening on port ${port}`); });

如果有人试图淹没你的RAM，一定要杀死连接!

var qs = require('querystring');

function (request, response) {
    if (request.method == 'POST') {
        var body = '';
        request.on('data', function (data) {
            body += data;
            // 1e6 === 1 * Math.pow(10, 6) === 1 * 1000000 ~~~ 1MB
            if (body.length > 1e6) { 
                // FLOOD ATTACK OR FAULTY CLIENT, NUKE REQUEST
                request.connection.destroy();
            }
        });
        request.on('end', function () {

            var POST = qs.parse(body);
            // use POST

        });
    }
}

限制POST大小，避免淹没你的节点应用。 有一个很棒的原始模块，适合表达和连接，可以帮助您限制大小和长度的请求。

您可以使用express中间件，该中间件现在内置了体解析器。这意味着你所需要做的就是:

import express from 'express'

const app = express()

app.use(express.json())

app.post('/thing', (req, res) => {
  console.log(req.body) // <-- this will access the body of the post
  res.sendStatus(200)
})

该代码示例是带有Express 4.16.x的ES6