如何从Node.js中的HTTP post方法中提取表单数据(form[method="post"])和文件上传?
我看了文件,谷歌了一下,什么都没找到。
function (request, response) {
//request.post????
}
有图书馆或黑客吗?
如何从Node.js中的HTTP post方法中提取表单数据(form[method="post"])和文件上传?
我看了文件,谷歌了一下,什么都没找到。
function (request, response) {
//request.post????
}
有图书馆或黑客吗?
当前回答
如果你使用node- terrible,你可以这样做:
var formidable = require("formidable");
var form = new formidable.IncomingForm();
form.parse(request, function (err, fields) {
console.log(fields.parameter1);
console.log(fields.parameter2);
// ...
});
其他回答
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
});
对于任何想知道如何在不安装web框架的情况下完成这个微不足道的任务的人,我设法把它放在一起。几乎没有生产准备,但它似乎工作。
function handler(req, res) {
var POST = {};
if (req.method == 'POST') {
req.on('data', function(data) {
data = data.toString();
data = data.split('&');
for (var i = 0; i < data.length; i++) {
var _data = data[i].split("=");
POST[_data[0]] = _data[1];
}
console.log(POST);
})
}
}
下面是一个非常简单的无框架包装,基于这里发布的其他答案和文章:
var http = require('http');
var querystring = require('querystring');
function processPost(request, response, callback) {
var queryData = "";
if(typeof callback !== 'function') return null;
if(request.method == 'POST') {
request.on('data', function(data) {
queryData += data;
if(queryData.length > 1e6) {
queryData = "";
response.writeHead(413, {'Content-Type': 'text/plain'}).end();
request.connection.destroy();
}
});
request.on('end', function() {
request.post = querystring.parse(queryData);
callback();
});
} else {
response.writeHead(405, {'Content-Type': 'text/plain'});
response.end();
}
}
使用的例子:
http.createServer(function(request, response) {
if(request.method == 'POST') {
processPost(request, response, function() {
console.log(request.post);
// Use request.post here
response.writeHead(200, "OK", {'Content-Type': 'text/plain'});
response.end();
});
} else {
response.writeHead(200, "OK", {'Content-Type': 'text/plain'});
response.end();
}
}).listen(8000);
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
});
}
}