接受POST请求的Node.js服务器 [英] Node.js server that accepts POST requests
问题描述
我正在尝试允许javascript与Node.js服务器通信。
I'm trying to allow javascript to communicate with a Node.js server.
POST请求（Javascript）
var http = new XMLHttpRequest();
var params = "text=stuff";
http.open("POST", "http://someurl.net:8080", true);
http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
http.setRequestHeader("Content-length", params.length);
http.setRequestHeader("Connection", "close");
alert(http.onreadystatechange);
http.onreadystatechange = function() {
if (http.readyState == 4 && http.status == 200) {
alert(http.responseText);
}
}
http.send(params);
现在，Node.js服务器代码如下所示。在用于GET请求之前。我不确定如何使其适用于POST请求。
Right now the Node.js server code looks like this. Before it was used for GET requests. I'm not sure how to make it work with POST requests.
服务器（Node.js）
var server = http.createServer(function (request, response) {
var queryData = url.parse(request.url, true).query;
if (queryData.text) {
convert('engfemale1', queryData.text, response);
response.writeHead(200, {
'Content-Type': 'audio/mp3',
'Content-Disposition': 'attachment; filename="tts.mp3"'
});
}
else {
response.end('No text to convert.');
}
}).listen(8080);
预先感谢您的帮助。
推荐答案
以下代码显示了如何从HTML表单中读取值。正如@pimvdb所说，你需要使用request.on（'data'...）来捕获正文的内容。
The following code shows how to read values from an HTML form. As @pimvdb said you need to use the request.on('data'...) to capture the contents of the body.
http = require('http');
fs = require('fs');
server = http.createServer( function(req, res) {
console.dir(req.param);
if (req.method == 'POST') {
console.log("POST");
var body = '';
req.on('data', function (data) {
body += data;
console.log("Partial body: " + body);
});
req.on('end', function () {
console.log("Body: " + body);
});
res.writeHead(200, {'Content-Type': 'text/html'});
res.end('post received');
}
else
{
console.log("GET");
//var html = '<html><body><form method="post" action="http://localhost:3000">Name: <input type="text" name="name" /><input type="submit" value="Submit" /></form></body>';
var html = fs.readFileSync('index.html');
res.writeHead(200, {'Content-Type': 'text/html'});
res.end(html);
}
});
port = 3000;
host = '127.0.0.1';
server.listen(port, host);
console.log('Listening at http://' + host + ':' + port);
如果您使用类似 Express.js 然后它可以简化为类似的东西，因为Express会为你处理很多HTTP管道：
If you use something like Express.js then it can be simplified to something like this since Express takes care of a lot of the HTTP plumbing for you:
var express = require('express');
var fs = require('fs');
var app = express();
app.use(express.bodyParser());
app.get('/', function(req, res){
console.log('GET /')
//var html = '<html><body><form method="post" action="http://localhost:3000">Name: <input type="text" name="name" /><input type="submit" value="Submit" /></form></body>';
var html = fs.readFileSync('index.html');
res.writeHead(200, {'Content-Type': 'text/html'});
res.end(html);
});
app.post('/', function(req, res){
console.log('POST /');
console.dir(req.body);
res.writeHead(200, {'Content-Type': 'text/html'});
res.end('thanks');
});
port = 3000;
app.listen(port);
console.log('Listening at http://localhost:' + port)
在这两种情况下，我都在阅读index.html，这是一个非常基本的HTML文件，其中包含您正在使用的JavaScript：
In both cases I am reading "index.html" which is a very basic HTML file with the JavaScript that you are using:
<html>
<body>
<form method="post" action="http://localhost:3000">
Name: <input type="text" name="name" />
<input type="submit" value="Submit" />
</form>
<script type="text/JavaScript">
console.log('begin');
var http = new XMLHttpRequest();
var params = "text=stuff";
http.open("POST", "http://localhost:3000", true);
http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
//http.setRequestHeader("Content-length", params.length);
//http.setRequestHeader("Connection", "close");
http.onreadystatechange = function() {
console.log('onreadystatechange');
if (http.readyState == 4 && http.status == 200) {
alert(http.responseText);
}
else {
console.log('readyState=' + http.readyState + ', status: ' + http.status);
}
}
console.log('sending...')
http.send(params);
console.log('end');
</script>
</body>
</html>
这篇关于接受POST请求的Node.js服务器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
