表达v4.17.0

app.use(express.urlencoded( {extended: true} ))

console.log(req.body) // object

演示的形式

另一个答案

参考:https://nodejs.org/en/docs/guides/anatomy-of-an-http-transaction/

let body = [];
request.on('data', (chunk) => {
  body.push(chunk);
}).on('end', () => {
  body = Buffer.concat(body).toString();
  // at this point, `body` has the entire request body stored in it as a string
});

1)从npm安装body-parser。

2)然后在app.ts中

var bodyParser = require('body-parser');

3)然后你需要写

app.use(bodyParser.json())

在app.ts模块中

4)记住你要包括

app.use(bodyParser.json())

在任何模块声明的顶部或之前。

Ex:

app.use(bodyParser.json())
app.use('/user',user);

5)然后使用

var postdata = req.body;

您可以使用“request - Simplified HTTP client”和Javascript Promise轻松地发送和获取POST请求的响应。

var request = require('request');

function getData() {
    var options = {
        url: 'https://example.com',
        headers: {
            'Content-Type': 'application/json'
        }
    };

    return new Promise(function (resolve, reject) {
        var responseData;
        var req = request.post(options, (err, res, body) => {
            if (err) {
                console.log(err);
                reject(err);
            } else {
                console.log("Responce Data", JSON.parse(body));
                responseData = body;
                resolve(responseData);
            }
        });
    });
}

如果你不想把数据和数据回调放在一起，你可以像这样使用可读回调:

// Read Body when Available
request.on("readable", function(){
  request.body = '';
  while (null !== (request.body += request.read())){}
});

// Do something with it
request.on("end", function(){
  request.body //-> POST Parameters as String
});

这种方法修改传入的请求，但是一旦您完成响应，请求就会被垃圾收集，因此这应该不是问题。

如果你害怕巨大的身体，一种先进的方法是先检查身体的大小。

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)
});